General (Communications, Ex Versions, Conversion tables)

5
© Siemens AG 2015
General information
5/2
Communication
5/2
5/7
5/8
Continuous gas analysis
Gas analysis library for SIMATIC PCS 7
Process gas chromatography
5/11
Operator functions of Series 6
5/12
FAT & factory certificates
5/13
5/13
5/21
5/33
Ex versions
Continuous gas analysis, extractive
Continuous gas analysis, extractive
ATEX II 2G control unit
Continuous gas analysis, extractive
ATEX II 2G control unit,
leakage compensation
Continuous gas analysis, extractive
ATEX II 2G/3G control unit,
continuous purging
Continuous gas analysis, extractive
Purging unit FM (Class I Div 2)
Continuous gas analysis, extractive
Additional units
Continuous gas analysis, in-situ
LDS 6
Continuous gas analysis, in-situ
LDS 6, EEx barrier
Continuous gas analysis, in-situ
SITRANS SL
Process gas chromatography
5/34
5/34
5/35
5/37
Tables
Conversion tables
Dew point/saturation table
International standards
5/39
Definitions
5/22
5/24
5/26
5/27
5/29
5/31
5/32
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Communication
Continuous gas analysis
■ Overview
Reliable functioning of analyzers is of decisive importance for
process control. It is necessary to record, correct and transmit
measured values, to set and modify parameters, to check functions, to update calibrations, and to scan status signals e.g. for
preventive maintenance. Communication between the operator
and device is therefore an important part of process analysis,
and the offered facilities have become a decisive performance
feature of analyzers.
Networking over ELAN
ELAN communication is used e.g. for the correction of cross-interference. Direct connection is only possible between Siemens
gas analyzers.
Specification for the interface cable
Surge impedance
100 ... 300 Ω, with a measuring
frequency of > 100 kHz
Extractive
Cable capacitance
Typ. < 60 pF/m
The gas analyzers of Series 6 (ULTRAMAT 6,
ULTRAMAT/OXYMAT 6, OXYMAT 6, OXYMAT 61, FIDAMAT 6
and CALOMAT 6) as well as the ULTRAMAT 23 offer the following
communications facilities in addition to data transmission over
analog and binary outputs:
• RS 485 interface
• SIPROM GA
• PROFIBUS DP/PA
• Generic communications interface (only OXYMAT 6,
ULTRAMAT 6 and ULTRAMAT/OXYMAT 6).
Core cross-section
> 0.22 mm2, corresponds to
AWG 23
Cable type
Twisted pair, 1 x 2 conductors of
cable section
Signal attenuation
Max. 9 dB over the whole length
Shielding
Copper braided shield or braided
shield and foil shield
Connection
Pin 3 and pin 8
RS 485 interface
The serial interface integrated as standard permits communication between several analyzers over the internal bus (ELAN). Parameterization is carried out using the analyzer’s menu.
*1'
0
5
9
0
*1'
0
9
0
*1'
0
9
0
Bus cable with plug connections, ELAN networking
5/2
Siemens AP 01 · 2015
9-pin connector
(RS 485)
(device 1)
9-pin connector
(RS 485)
(device 2)
9-pin connector
(RS 485)
(device 3)
© Siemens AG 2015
General information
Communication
Continuous gas analysis
Bus terminating resistors
Hardware requirements
Pins 3-7 and 8-9 of the first connector of a bus cable must be
bridged (ELAN networking).
The following hardware and system requirements must be
provided for the PC/laptop configuration in order to use
SIPROM GA:
• Windows computer with Pentium 133 MHz and 32 MB RAM:
Recommendation: Pentium II 266 MHz and 64 MB RAM
• CD-ROM drive (for installation)
• Vacant hard disk capacity of at least 10 MB
• VGA graphics card (Windows-supported);
resolution: 1024 x 768
• Printer (Windows-supported)
• MS-Windows 95, ME; NT 4, Windows 98, Windows 2000 or
Windows XP operating system
• Vacant COM port (COM 1, 2 ...)
- The RS 485 / RS 232 interface converter is required for
coupling to the RS 485 ELAN network
- A standard 10-Mbit or 100-Mbit network (RJ45 connection)
with TCP/ IP is required for connecting the Ethernet / RS 485
interface converter
Note
It is advisable to install a repeater on the device side in the case
of a cable length of more than 500 m or with high interferences.
Networking with SIPROM GA
When used externally, the RS 485 interface requires software
matched to the analyzers, e.g. SIPROM GA.
SIPROM GA is a software program for communication between
PC/laptop and analyzers. A maximum of 12 devices (electronics
modules) with up to four channels/measured components of the
following type can be connected, displayed and remote-controlled per COM interface:
• OXYMAT 6/61
• OXYMAT 64
• ULTRAMAT 6
• CALOMAT 6
• CALOMAT 62
• FIDAMAT 6
• ULTRAMAT 23
SIPROM GA allows access to device parameters, right up to the
configuration of devices. All analyzer functions (except factory
default functions) can be remote-controlled and monitored in this
manner. SIPROM GA is therefore an ideal servicing and maintenance tool for Siemens gas analyzers.
In addition to remote control of all operator functions,
SIPROM GA offers complete access to all diagnostics data.
SIPROM GA therefore permits preventive maintenance as well
as fast responses when maintenance becomes necessary or
when the production sequence is changed.
Accessories for the network
For cables, connectors, repeaters etc., see Catalog IK PI or
CA 01 on the Mall under SIMATIC NET communications systems/PROFIBUS/network components.
Networking with SIPROM GA via converter
Up to 12 analyzers with max. four components each can be networked.
The functional principle is shown in the following illustration.
up to 12 analyzers
5
SIPROM GA ensures:
• High operational reliability
• High availability
• Central, comprehensive information
• Fast response time
• Flexibility
• Economical system integration
In addition to output of TAG No., components, current measured
values, comprehensive diagnostics information (status) and parameter settings on the analyzer display, SIPROM GA also offers
the following features:
• Bargraph display
• Recorder display of one or more measured values with printer
output
• Calibration functions (adjustment of all setpoints for calibration, remote calibration)
• Saving of all device data
• Remote control of all device functions
• Remote calibration
• Online help
• Downloading of new device firmware
• Cyclic saving of measured values on hard disk
• Writing user data to the device’s EEPROM, or downloading
data from it.
RS 485/RS 232
converter
Typical design of an RS 485 network with SIPROM GA
The gas analyzers can be installed at distances up to 500 m.
One network can be connected to each COM port.
Access to the analyzers using SIPROM GA is carried out either:
• Directly from the PC over an RS 485 interface or
• Over an Ethernet gateway
Siemens AP 01 · 2015
5/3
© Siemens AG 2015
General information
Communication
Continuous gas analysis
Networking with SIPROM GA via Ethernet
When networking with Ethernet, there are no limitations for the
distance between PC and gateway. In addition, communication
over Ethernet permits connection of several gateways to one
COM port, and thus the possibility for monitoring and operating
several widely distributed or separately installed analyzers/systems from one station.
up to 12 analyzers
Ethernet Gateway
Ethernet Gateway
Typical design of an RS 485 Ethernet network with SIPROM GA
5
5/4
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Communication
Continuous gas analysis
PROFIBUS
The usual transmission of measured values and fault messages
via analog and binary outputs requires complex cabling. On the
other hand, when using PROFIBUS DP and PROFIBUS PA, one
single two-wire conductor is sufficient for digital transmission
e.g. of all measured values (also from several channels), status
information or diagnostics functions for preventive maintenance.
The PROFIBUS DP version with its high transmission rate for relatively small data quantities per device is widely used in production automation, whereas PROFIBUS PA takes into account the
features important for process engineering, e.g. large data
quantities and use in hazardous areas.
The limited dynamic performance of 4 to 20 mA mA signals can
be replaced, the laborious configuring of measuring ranges can
be omitted. By using simulated measured values without media,
increased safety can be provided for the plant configuration,
and configuration errors can be avoided. Parameter sets can be
generated offline (from your desk) and subsequently downloaded and saved in the device. Local operations can thus be
reduced to a minimum.
The Siemens gas analyzers
• OXYMAT 6/61
• OXYMAT 64
• ULTRAMAT 23
• ULTRAMAT 6
• CALOMAT 6
• CALOMAT 62
• FIDAMAT 6
are PROFIBUS-compatible when using an optional plug-in card
(retrofitting also possible) and therefore comply with the "Device
profile for analyzers" defined as binding by PI (PROFIBUS International).
Customer benefits include an enormous savings potential in all
plant areas, covering configuration and commissioning, operation and maintenance, up to subsequent plant expansions.
Operation of the gas analyzers from a control system or a separate PC is possible using the SIMATIC PDM (Process Device
Manager); this is software which executes under Windows and
which can also be integrated into the SIMATIC PCS 7 process
control system. This permits a clear presentation for integration
of the analyzers in the system as well as for the complex parameter structure of the analyzers.
Direct connection of the analyzers to a control system is also
possible without PDM, e.g. using STEP7, but this necessitates
additional programming and offers less user friendliness. In
most cases, this direct connection is therefore only applicable if
acyclic (device operation) data are not used.
A differentiation is made between cyclic and acyclic services.
Cyclic services are used to transmit time-critical data such as
measured values and statuses. Acyclic services permit scanning or modification of device parameters during operation.
Both graphic displays and values can be output on a PC. Signaling of maintenance, fault and diagnostics information is also cyclic. These data are displayed in plain text when using
SIMATIC PDM.
The binary outputs can also be switched using cyclic services,
thus also permitting triggering of relays over PROFIBUS (e.g. for
measuring point switchover, calibration etc.).
5
3URFHVVFRQWUROV\VWHP
6
'33$FRXSOHU
'33$OLQN
*DVDQDO\]HUV
*DVDQDO\]HU
*DVDQDO\]HU
Schematic structure of a PROFIBUS system
Siemens AP 01 · 2015
5/5
© Siemens AG 2015
General information
Communication
Continuous gas analysis
The following acyclic device parameters and configurations
can be used in PROFIBUS DP and PROFIBUS PA by means of
SIMATIC PDM:
• Factory data
• Diagnostics values
• Logbook
• Display measuring ranges
• Zero calibration
• Sensitivity calibration
• Setpoints for zero/sensitivity
• Total/single calibration and AUTOCAL
• Select measuring ranges
• Define measuring ranges
• Electric time constants
• On/off functions
• Chopper frequency
• Magnetic field frequency
• Date/time
• Measuring point switchover
• Logbook settings
• Relay assignment
• Binary inputs
• Reset
• Save/load data
• Suppression of short noise signals
• Calibration tolerances
• Switch valves
• PROFIBUS configuration
5
Use of PROFIBUS offers the following customer benefits:
• Cost reductions for planning, installation and operation
• Use of (distributed) device intelligence
• Replaceability of devices
• Only one cable for everything, no complex cabling
• No limited 4 to 20 mA resolution
• No laborious parameterization of measuring ranges
• Simulation of measured values
• Simplification of commissioning
• Testing of network/AS
• Avoidance of errors during startup
• Online diagnostics
• Offline parameterization
5/6
Siemens AP 01 · 2015
Generic communications interface
(only OXYMAT 6, ULTRAMAT 6 and ULTRAMAT/OXYMAT 6)
User benefits are offered thanks to numerous functions which
are mainly required in the automotive industry, for example to
carry out repeated linearization. In contrast to PROFIBUS and
ELAN, communication is only possible between one device and
one PC, and takes place according to the master/slave principle. The device only transmits data when requested by a command telegram, where only one command can be processed
and replied to at a time.
The generic communications menu can be called using
Function88, and the parameters adjusted.
Continuous gas analysis/in-situ
LDS 6 can send and receive data over an Ethernet connection
together with the LDScom software. This installation and service
tool is able to check and adapt device status and calibration parameters from a remote location. If necessary, even a complete
system check can be carried out over the remote connection. If
servicing is necessary, the required information can be sent to
the Siemens service engineer by modem, and he can then carry
out the appropriate measures from the remote location.
This facility for remote maintenance and diagnostics is implemented using a standard LAN modem.
Public telephone network
Modem
Ethernet
LDS 6
Preset IP address in network
192.168.XXX.XXX
LDS 6 additionally possible
LDS 6 additionally possible
LDS 6 additionally possible
External connection of LDS 6 via a modem for implementing remote
maintenance measures
© Siemens AG 2015
General information
Communication
Gas analysis library for SIMATIC PCS 7
■ Overview
PCS 7 Add-on
■ Function
fit for SIMATIC PCS 7 V7
Driver blocks
The gas analyzers are integrated into the hardware configuration
of the SIMATIC PCS 7 process control system using their GSD
files. Parameterization of the driver blocks is subsequently carried out corresponding to the device configuration. The driver
blocks provide the following functions:
• Reading of analyzer values
• Starting of autocalibration
• Evaluation of device-specific diagnostics
• Standard diagnostics
• Alarms for analyzer values (alarm limits adjustable on the
block)
• Simulation
Symbols and faceplates
The symbols are automatically created and connected using the
wizard "Create block symbols". The faceplates can be displayed
in various views:
• Standard
• Maintenance
• Configuration
• Limits
• Trend
• Alarm
■ More information
The driver blocks from the gas analysis library permit integration
of the following gas analyzers into the SIMATIC PCS 7 process
control system over PROFIBUS DP:
• ULTRAMAT 6 and ULTRAMAT 23
• CALOMAT
• OXYMAT
Please contact your Siemens sales partner for further information and for ordering.
5
The driver blocks permit access to the measured values and to
the calibration functions of these devices. They can also be used
to evaluate and display diagnostics information, and to trigger
alarms if necessary.
Note:
The gas analysis library can be used together with
SIMATIC PCS 7 V6 and V7.
Siemens AP 01 · 2015
5/7
© Siemens AG 2015
General information
Communication
Process gas chromatography
■ Overview
The MAXUM edition II and MicroSAM gas chromatographs can
transfer measured results and status information to process control systems, operator panels or printers during operation.
Interfaces
Chromatograph, operator panel, printer and control system use
special electronic interfaces:
• Electrical connection
The device interfaces are connected by electric cables.
The electrical properties of the interfaces are standardized.
• Control of communication and language
Rules must be observed to control the communication. It must
be clearly defined in networks who is the "sender" and who is
the "receiver" of the data. Both communication partners must
use the same protocol.
MODBUS
MODBUS is a rule for controlling data transfer between two computer systems - a transmission protocol. MODBUS is the "de
facto" industry standard for connecting measuring and control
devices to process control systems (PCS). Most process control
systems can be equipped with serial interfaces and MODBUS.
5
Memory division
To ensure that the meaning of the registers is known to each network station, this must be defined in the configuration. The results of each component in each sample must be written into defined positions in the PCS memory. These address declarations
depend on the number of chromatographs, samples and components. The same applies to status, sample sequence and
sample release. Standard addresses are also defined in these
cases.
OPC server (OLE for Process Control)
OPC is a vendor-independent software interface. It allows standardized access from Windows applications to chromatograph
data. OPC corresponds to a typical client/server architecture.
OPC allows a universal connection between any Windows application which supports an OPC client interface and the MAXUM
edition II / MicroSam.
The OPC server is usually installed on a separate PC.
OPC is a modern alternative to MODBUS. MAXUM edition II and
MicroSAM do not require an additional interface, they use the
existing Ethernet connection (TCP/IP).
Using the MODBUS coupling, information can be sent interference-proof via just one data line. Information can be read from
process gas chromatographs (PGC), and certain functions of
the PGC can also be parameterized.
OPC standardizes the access to measured values, status functions, control functions and analytical data in a manner similar to
MODBUS.
Advantages:
• Information on the PGC status during operation
• Supply of protected data in numerical form without falsification
by interfering pulses
• Reduced cabling overhead
Advantages with OPC applications:
• Reduced maintenance costs
• Simple GUI for configuration
• Reduced system integration costs
• Reduced test costs
• Reduced maintenance costs
The MODBUS coupling can:
• Transmit measured values
• Transmit status information
• Output information on the current analysis
• Trigger control functions
The MODBUS uses a master/slave transmission procedure.
The control system is always the master, the process gas chromatograph is the slave.
The representation of data in the message frames is based on
the compact RTU format.
23&FOLHQW
23&FOLHQW
3&66LHPHQV3&6
OPC server
5/8
Siemens AP 01 · 2015
23&VHUYHU
© Siemens AG 2015
General information
Communication
Process gas chromatography
Hardware components
Software
NAU - Network Access Unit
Modern chromatographs are controlled by microprocessors.
We differentiate between software in the device and software on
a PC operator panel.
An NAU expands and supplements a GC network, and has three
fundamental functions:
• Enclosure for 7 additional I/O plug-in cards
• Connection of serial ASCII printers and external host PCs
(control system)
• Central operation of a GC network from one point
The Network Access Unit (NAU) is an input/output station for the
Siemens process chromatographs. It can be used to centrally
call, process and pass on data. It is used if it is not possible to
connect the electronics close to the analyzer, if the number of MicroSam inputs/outputs is insufficient, or if installation in a central
control room is required. This significantly reduces the required
wiring to the control room.
The NAU can also be used as a central control unit for function
testing, data output and parameterization of the MicroSam. It
permits access to the MicroSam to which it is connected, as well
as to all other Siemens gas chromatographs and further NAUs of
the system which are networked over the system bus.
The NAU is connected to the Ethernet or DataNet and has a total
of 7 slots to accommodate a wide range of electronics cards.
These comprise cards for analog and digital signal processing
as well as interfaces for host computers and process control
systems. An NAU can be expanded by a further 10 slots using a
CAN Extension Unit.
A total of 7 different electronics cards are available:
Software in the chromatograph
The chromatograph can carry out analyses independently, without an operator panel being connected. It then requires its own
control software and local operating software (HMI).
Software in the operator panel (PC)
Siemens gas chromatographs can be operated over Ethernet
and a PC, by using the built-in control panel (HMI), or with a Network Extension Unit (NAU).
Workstation software
The most important programs this contains are the MAXUM System Manager, the MAXUM EZChrom and the HMI-Emulation. In
addition, it contains useful MAXUM utilities and loadable extensions such as:
MaxBasic
For modification of MaxBasic programs in the gas chromatographs or the NAU.
MAXUM OPC Server
For coupling of the MAXUM e.g. to control systems.
Simulated Distillation
For import/export of methods for simulated distillation.
MAXUM System Tools
• Input/output module
8 analog outputs
• Input/output module
4 digital outputs,
4 digital inputs
• Input/output module
2 digital outputs,
2 digital inputs,
2 analog outputs,
2 analog inputs
• Communication module
10 Base FO Ethernet
(fiber-optic coupling)
• Communication module
DataNET Copper
(redundant system bus)
• Communication module
DataNET Fiber Optic
• Communication module
Advanced Data Highway
(OptiCHROMe Advance
coupling)
CEU - CAN Extension Unit (only MAXUM edition II)
• Increases the I/O capacity of the GC or NAU
• 10 additional I/O plug-in cards
• Has its own power supply
• Also for zone 1
ANG - Advance Network Gateway
Connects OptiCHROMs to the Ethernet network.
DNH - DataNET Hub
Communications router completely redundant in the network:
has 2 own TCP/IP addresses, dual electronics and power
supply.
ANCB - Advance Network Communication Board
Converts the communications protocols in the device
For data logging, for firmware updating, or for operation of discontinued OptiCHROMs (APC 8.0).
Different levels of operation
Operation of the PC is in three levels:
• System Manager - network monitoring and configuration of the
chromatograph
• EZChrom - method development and control of analysis
• MMI emulation - operator control and monitoring
System Manager:
Configuration of database and applications
The System Manager provides the connection to the chromatograph as well as an overview of the network.
It is additionally used for configuration and high-level monitoring
of the chromatograph, and additionally branches to the MMI emulation, EZ Chrom and Basic editor.
The System Manager almost exclusively outputs static displays,
i.e. it fetches a table from the chromatograph’s database, and
saves it again there later. Only results and alarms are displayed
dynamically.
The System Manager presents the hardware in tables, e.g. the
system table contains all hardware components of the chromatograph: detectors, valves, ovens, digital outputs, etc.
In addition, the System Manager can:
• Save databases of a chromatograph as a file on the PC, or
load them from the PC into the chromatograph.
• Upgrade the chromatograph software.
• Call EZChrom, MMI emulation, Datalogger or the MaxBasic
editor.
Two versions:
• MAXUM directly to DataNET
• MAXUM directly to OptiCHROM data highway
Siemens AP 01 · 2015
5/9
5
© Siemens AG 2015
General information
Communication
Process gas chromatography
EZChrom:
Generate methods and sample sequences
The EZChrom software is installed on the PC and is also included in the operator software in the chromatograph, e.g. it
integrates the detector signals there, calculates the results, or
switches time-controlled events.
EZChrom on the PC is responsible for the following tasks:
• Generate or modify methods
• Carry out re-integration
• Calibrate a method
• Display and print saved and real-time chromatograms
• Archive chromatograms
• Generate and modify sample flow sequences
• View analysis clock
• Switch the chromatograph to Run or Hold.
MMI emulation: Operator control and monitoring
This is identical to operation on the built-in control panel of a
MAXUM or an NAU. It is used for operator control and monitoring. For example, it is possible to display results, switch valves
or modify temperatures. However, there are only minimum possibilities for editing the configuration and tables. The MMI is always a dynamic display.
5
5/10
Siemens AP 01 · 2015
APC 8.0
This is an interface to the OptiCHROM Advance gas chromatographs. It is started from the MAXUM System Manager. It permits
operation of older types of chromatograph via a PCI card.
The following can be executed with APC 8.0:
• Service panel emulation on the PC
• Data logging
• Viewing of chromatograms
• Editing of tables in OptiCHROM.
GC-Tools operating software
GC-Tools is the Windows-based operating software for discontinued Siemens gas chromatographs of Series 202 and 302. This
software expands the BEDI operating software, which is based
on MS-DOS.
The Network Explorer shows all information at the device level,
e.g.:
• Chromatogram display
• Manual control of all parameters
• Drivers for the four serial interfaces of the chromatograph
© Siemens AG 2015
General information
Operator functions of Series 6
Main menu
No.
Function designation
Diagnostics
1
2
Calibration
Manual
SIPROM
GA
PA/DP
V1.6.0
PA/DP
V2.0.0
Factory data
X
Diagnostic values
X
X
X
X
X
—
3
Log book
X
X
X
—
4
X
Display measuring ranges
X
X
—
X
20
Zero calibration
X
X
—
X
21
Sensitivity calibration
X
X
—
X
22
Zero point/sensitivity setpoints
X
X
—
X
23
Total/individual calibration
X
X
—
X
24
AUTOCAL
X
X
X
X
25
Drift values
X
X
—
—
26
Calibration with air (OXYMAT 64 only)
X
—
—
—
Measuring ranges
(Code 1)
40
Select measuring ranges
X
X
—
X
41
Define measuring ranges
X
X
—
X
Parameter
(Code 1)
50
Electrical time constants
X
X
—
X
51
Limit values
X
X
—
—
52
On/off functions
X
—
—
X
53
Status messages
X
X
—
—
54
Graphical measured value representation
X
X
—
—
55
Measured-value display
X
X
—
—
56
LCD contrast
X
—
—
—
57
Chopper frequency (ULTRAMAT 6 only)
Magnetic field frequency (OXYMAT 6 only)
Flame ignition (FIDAMAT 6 only)
X
X
—
X
58
Date/time
X
X
—
X
59
Measuring point switchover
X
X
—
—
60
Log book settings
X
—
—
X
61
Vibration compensation (OXYMAT 6 only)
Switch internal valves (FIDAMAT 6 only)
X
X
—
X
62
Switch external pressures (FIDAMAT 6 "without pump" only)
X
X
—
X
70
Analog output
X
X
—
—
71
Relay assignment
X
X
—
X
72
Binary inputs
X
X
—
X
73
ELAN configuration
X
X
—
—
74
Reset
X
X
—
X
75
Save, load data
X
X
—
X
76
Suppression of short noise signals
X
X
—
X
77
Measured value memory (analog output)
X
X
—
—
78
Calibration tolerances
X
X
—
X
79
Change codes
X
X
—
—
80
Unit test
X
X
—
—
81
Language selection
X
X
—
—
82
Pressure correction (ULTRAMAT 6, OXYMAT 6, OXYMAT 64
and CALOMAT 62 only)
X
X
—
—
83
Correction of cross-interference
X
X
—
—
84
Phase calibration (ULTRAMAT 6 and OXYMAT 6 only)
X
—
—
—
85
Switch valves
X
—
—
—
86
Linear temperature compensation
X
X
—
—
87
Fault on/off
X
—
—
—
88
AK configuration (ULTRAMAT 6 and OXYMAT 6 only)
X
—
—
—
89
Sample chamber heating (ULTRAMAT 6, OXYMAT 6 and
CALOMAT 62 only)
X
X
—
—
90
PROFIBUS configuration
X
X
X
X
91
Startup state (FIDAMAT 6 only)
X
X
—
—
92
Pressure values (FIDAMAT 6 only)
X
X
—
—
93
Units (FIDAMAT 6 only)
X
—
—
—
—
Control of external valves
—
—
—
X
—
Software download
—
X
—
—
Configuration
(Code 2)
Siemens AP 01 · 2015
5/11
5
© Siemens AG 2015
General information
FAT & factory certificates
Selection and ordering data
Article No.
FAT & factory certificates for extractive gas analyzers
of Series 6 and ULTRAMAT 23
7MB8100- 7 7 7 7 7 - 7 7 7 7
not applicable for
Click on the Article No. for the online configuration in the PIA Life Cycle Portal.
Factory acceptance (FAT) with customer
Visual inspection and basic settings
None
Visual acceptance, 1 to 8 devices, incl. function test and calibration
Visual acceptance, 9 devices and more, incl. function test and calibration
0
1
2
Measured signal response
None
Noise, drift
Noise, drift, linearity, T90 time
A
B
C
Compensation, cross-interference
None
Pressure compensation
1 interfering gas3)
2 ... 3 interfering gases3)
Pressure compensation and 1 interfering gas3)
Pressure compensation and 2 or 3 interfering gases3)
A
B
C
D
E
F
Factory acceptance, explosion protection
None
Pressurized enclosure for explosion-proof units (functionality)
Relay test
Pressurized enclosure for explosion-proof units and relay test
FIDAMAT
FIDAMAT
FIDAMAT
0
1
2
3
Number of test channels
None
1 ... 3
4 ... 6
7+
19" rack units
19" rack units
0
2
3
4
Certificates
5
General certificates
Factory certificate DIN EN 10204 2.1 (quality test certificate)1)
Test report according to DIN EN 10204 2.21)
Certificate of origin1)
Certificate of origin1) and test report according to DIN EN 10204 2.2
Certificate of origin1) and factory certificate DIN EN 10204 2.1
Certificate of origin, factory certificate 2.1 and test report 2.2 according to
DIN EN 10204
Factory certificate 2.1 and test report 2.2 according to DIN EN 10204
Factory certificate EN 10204 2.1 following repair
Parameter sheets (only with suffix Y22)
0
1
2
3
4
5
6
7
8
Acceptance test certificate according to DIN EN 10204 3.1 with suffix Y22
None
Measured values, noise, drift, linearity
Measured values, noise, drift, linearity, pressure compensation
Measured values, noise, drift, linearity, pressure and temperature compensation
A
B
C
D
Acceptance test certificate according to DIN EN 10204 3.1 extended
None
Cross-interference of residual gases (H2O and 2 other gases)
T90 time
Influence of atmosphere containing CO2
Cross-interference of residual gases2) and T90 time
Cross-interference of residual gases2) and influence of atmosphere containing
CO2
T90 time and influence of atmosphere containing CO2
Cross-interference of residual gases2), T90 time and influence of atmosphere
containing CO2
A
B
C
D
E
F
G
H
Factory insepction certificate DIN EN 10204, language
German
English
French
Required analyzer information
FIDAMAT
FIDAMAT
0
1
2
Order code
Add "-Z" to Article No. and specify Order codes.
Information on product/order with order item and contact partner
(Sales Region, region or distributor)
Y22
1)
Can also be ordered following delivery
2)
H2O and 2 other gases
3)
Special gases are invoiced with a surcharge as required. Orders for factory acceptance (FAT) with customer should be ordered with quantity 1. Orders for
certificates can be ordered with quantity ≥ 1.
5/12
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive
■ Overview
Use of Series 6 in hazardous areas
Dependent on the application, the measuring equipment
can include the following parts:
• Analyzer
• EEx p safety equipment (purging unit)
• Flame arrestors
• Ex i isolation amplifier
• Isolating relay
Gas analyzers
Suitability-tested field analyzers of Series 6 must be used to
measure gases in hazardous areas.
The Series 6 analyzers are approved in accordance with Ex type
of protection "Pressurized enclosure EEx p" for Zone 1 and Zone
2. In addition, these analyzers must be connected to monitoring
equipment which must also be suitability-tested.
Exception: a pressurized enclosure is not required in zone 2 for
the measurement of gases whose composition always remains
below the lower explosive limit (LEL); in this case, it is sufficient
for the field housing to be gas fume-proof (type of protection
EEx n R).
Following pre-purging of 5 minutes, the monitoring equipment
ensures that no gas fumes can enter the enclosure, and accumulation of the sample gas in the enclosure is prevented. The
volume flow during the pre-purging phase is > 50 l/min. The protective gas is usually fed into the analyzer enclosure from a supply network via the monitoring equipment.
Category ATEX II 2G (Ex zone 1)
Two versions of pressurized enclosure EEx p complying with the
directive 94/9/EC are available for use in zone 1:
• Pressurized enclosure with compensation of losses resulting
from leaks
The principle of this type of protection is based on prevention
of ingress of the surrounding atmosphere or of the sample gas
into the enclosure of the electrical equipment.
Only that volume of protective gas is fed into the enclosure
that is required to maintain an overpressure of at least 50 Pa
compared to the sample gas pressure and atmospheric pressure. The maximum purging gas pressure is 165 hPa; this results in a maximum permissible sample gas pressure of
164 hPa;
If the sample gas is combustible or occasionally flammable,
the analyzer enclosure must be additionally purged with inert
gas (e.g. nitrogen). In these cases, you must additionally ensure that the internal enclosure pressure is at least 5 mbar
higher than the fail-safe-regulated sample gas pressure.
If the pressure control of the sample gas is not fail-safe
(= "double fault safety"), but only operationally safe (="single
fault safety"), a differential pressure switch of the EEx p safety
equipment must be used to signal if the sample gas pressure
exceeds the purging gas pressure. This measure trips a safety
shutdown.
With occasionally flammable sample gas mixtures, flame arrestors must be additionally mounted externally at the sample
gas inlet and outlet.
Both the differential pressure switch and the flame arrestors
come into contact with the sample gas and must therefore be
made of corrosion-proof material, if applicable.
Test certification: PTB 00 ATEX 2022 X
Device identification: II 2 G Eex p [ia] ia IIC T4
• Pressurized enclosure with continuous purging
The principle of this type of protection is based on having continuous purging of the EEx p enclosure after the pre-purge. It
prevents ingress of the surrounding atmosphere and ensures
that, for example, sample gas released through leaks is
thinned to the extent that a combustible mixture cannot be created. The volume flow of the protective gas is fixed at 1 l/min
and exceeds the maximum release volume by a factor of more
than 100.
Protective gas flows continuously through the enclosure with a
volume flow of at least 1 l/min; in addition, the flow ensures that
the enclosure pressure is increased to at least 50 Pa higher
than the surrounding pressure.
The max. permissible purging gas pressure is 25 hPa.
The max. permissible sample gas pressure is equivalent to the
permissible analyzer sample gas pressure.
Test certification TÜV 01 ATEX 1708 X
Device identification: II 2 G EEx p [ia] ia IIC T4.
The fundamental safety requirements of both versions are satisfied by compliance with the European standards
EN 50014:1997, EN 50016:1995, EN 50020:1994 and
EN 954:1996.
The purging gas is monitored using EEx p monitoring equipment: This is a stand-alone unit which is connected electrically
and pneumatically to the analyzer. Explosion protection is only
provided when both devices are combined (analyzer and purging unit, and possibly further measures) (see below).
Category ATEX II 3G (Ex zone 2)
The principle of the type of protection "Pressurized enclosure for
devices of Category 3" is based on preventing the ingress of any
hazardous atmosphere into the gas analyzer.
Two versions complying with Directive 94/9/EC are available for
use in Zone 2. In both cases, the standard devices of Series 6
(field version, not Ex) can be used.
• Explosion protection due to gas-fumes-proof enclosure
The enclosure of the Series 6 gas analyzers (standard, field
version) is sealed sufficiently to prevent gas fumes from penetrating. With this type of protection, only sample gases may
be fed in which are below the LEL.
Test certificate: TÜV 01 ATEX 1686 X
Device identification: II 3 G Ex nR op pr IIC T6 or T4 Gc
It is not necessary to install a purging unit here.
• Pressurized enclosure with continuous purging
Protective gas continuously flows through the enclosure with a
volume flow of at least 1 l/min; furthermore, the flow results in
an overpressure in the enclosure of at least 50 Pa compared
to atmospheric pressure.
The max. permissible purging gas pressure is 25 hPa. The
max. permissible sample gas pressure is equivalent to the
permissible analyzer sample gas pressure.
Test certification TÜV 01 ATEX 1697 X
Device identification: II 2/3 G EEx n P II T4
The purging gas is monitored using E Ex p monitoring equipment. This is a stand-alone unit which is connected electrically
and pneumatically to the analyzer. Explosion protection is only
provided when these two units (analyzer and purging unit) are
combined. (see below, purging unit)
The fundamental safety requirements of both versions are satisfied by compliance with the European standards
EN 50014:1997, EN 50016:1995, EN 50020:1994 and
EN 954:1996.
The EEx p monitoring equipment is a stand-alone unit which is
connected electrically and pneumatically to the analyzer. Explosion protection is only provided when these two units are combined.
Siemens AP 01 · 2015
5/13
5
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive
Category ATEX II 3D (Ex zone 22)
Ex zone 22 concerns the so-called dust protection. This is the
European successor to the previous German zone 11. Zone 22
concerns the area in which during normal operation it is not expected that potentially explosive atmospheres occur in the form
of a cloud of flammable dust in the air. Should such a cloud occur, however, then only briefly.
Considering the more stringent conditions for zone assignment,
it can be expected that there will be increased demand for dustprotected analyzers.
The field versions of CALOMAT 6, OXYMAT 6 and ULTRAMAT 6
can be used in this zone according to the conformity statement
TÜV 03 ATEX 2278 X.
They are assigned the Ex identification II 3 D IP65 T60 °C or
T65 °C or T85 °C or T135 °C.
However, this only concerns the so-called external explosion
protection. With respect to the measurement of flammable
gases, the additional measures applicable to gas explosion protection apply in addition, such as flame inhibitors. These separate certificates apply here.
FM/CSA Class I Div 2
The field versions of the standard analysis units can be used.
Explosion protection is only provided when combined with the
suitable equipment.
Definitions
Non-flammable
gas
Gas or gas compositions with concentrations below the
lower explosion limit (LEL). Non-explosive, even in contact with air.
Example: CH4 < 4.4 %; H2 < 4 %; C2H2 < 2.3 %
Flammable gas
5
Gas or gas composition with concentrations above the
LEL. Explosive, but additionally requires air and ignition
energy.
Example: CH4 > 4.4 %; H2 > 4 %; C2H2 > 2.3 %
Explosive gas
Mixture of flammable gas and a gas matrix containing
oxygen; between the LEL and the UEL (upper explosion
limit). Already contains O2 and is explosive without
additional air.
Example: 4,4 % ... 16.5 % CH4 in air
Note: Very little data is available on the existing LEL and
UEL for oxygen concentrations other than ambient air
(20.95 % O2) or for sample pressures other than atmospheric pressure.
Although the IEC and EN directives IEC 60079-10, EN 60079-10
(gas) and IEC 61241-10, EN 50281 (dust) do not specifically define the terms seldom, occasional, frequent, and permanent, the
following interpretation is customary:
• Frequent or permanent: > 1 000 hours per year
→ a frequent explosive atmosphere corresponds to Zone 0 or
Class I, Div. 1
• Occasional: 10 to 1 000 hours per year
→ an occasional explosive atmosphere corresponds to Zone
1 or Class I, Div. 1
• Seldom: < 10 hours per year
→ a seldom explosive atmosphere corresponds to Zone 2 or
Class I, Div. 2
5/14
Siemens AP 01 · 2015
The following additional safety mechanisms are recommended
for continuous gas analyzers for measuring explosive gases (internal explosion protection). These requirements are based on
the European ATEX approvals for analyzers, but can also be
used as directives in the USA since no other specific definition
exists there.
Purging requirements
The continuous analyzers from Siemens with approvals for
Class I, Div. 2 never require purging in a hazardous area in accordance with Class I, Div. 2 / Zone 2 under the aspect of area
classification. All electronic and mechanical components are
classified as “non-explosive” and can be used in environments
in accordance with Class I, Div. 2 / Zone 2. However, purging
may be necessary for a specific application, depending on the
type of sample gas and the respective analyzer model in order
to comply with the NEC and NFPA standards and to guarantee
maximum possible safety as well as protection of the system.
NFPA 496 requirements for continuous gas analyzers and systems from Siemens
The NFPA 496 "Standard for Purged and Pressurized Enclosures
for Electrical Equipment" describes in great detail and clarity the
requirements for purging and for the pressurized enclosure for
electric systems depending on 1) the external hazardous area
classification, 2) the classification/grading of the system, 3) the
type of gas in the gas path, and 4) the expected discharge of
gas (none/limited/unlimited).
It is assumed for the internal gas path of a continuous gas analyzer that it exhibits only low losses under normal conditions and
uncontrolled losses in the case of a mechanical failure (abnormal conditions).
When connecting gases with flammable components (> LEL) to
the gas path of an analyzer with a hermetically sealed enclosure,
the flammable component can become enriched in the inside of
the analyzer enclosure – even under normal conditions – beyond
a limit for continuous explosiveness and change the area classification (inside the analyzer enclosure) from "General Purpose"
(Universal) or Class I, Div. 2 / Zone 2 to Class I, Div. 1 / Zone 0.
This can also occur under abnormal conditions in any type of analyzer enclosure (including NEMA 1).
Analyzers for installation in the field – O6F, U6F and C6F – have
a gas-tight enclosure (IP65 / NEMA 4 equivalent in accordance
with IEC/EN 60529 and NEMA Standards Publication 250). Only
a small natural exchange of air takes place with the environment.
In accordance with NFPA 496, a limited discharge of gas is to be
expected under normal conditions, and an unlimited discharge
under abnormal conditions.
Analyzers for 19" rack mounting – O6E, U6E, U/O6, C6E, U23,
O61, FID5 and FID6 – have an "open" enclosure (IP20 in accordance with IEC/EN 60529, no exact NEMA equivalent to IP20
available). A high natural exchange of air takes place with the
environment unless the exchange is restricted. In accordance
with NFPA 496, no discharge of gas is to be expected under normal conditions, but an unlimited discharge under abnormal conditions.
In the case of analyzers designed for general applications, it is
assumed that they can ignite an explosive gas mixture at any
time, and therefore no type of explosive atmosphere whatsoever
may be present in the vicinity of these analyzers or within the enclosure at any time.
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive
In the case of analyzers designed for Class I, Div. 2 / Zone 2 it is
assumed that they cannot ignite an explosive gas mixture under
normal conditions (single fault safety), and these analyzers can
therefore be used in an occasionally explosive atmosphere in
the environment or within the enclosure in accordance with the
definition of Class I, Div. 2 / Zone 2. However, a frequent or permanent explosive atmosphere must be avoided since a simultaneous fault occurring on the electrical components of the analyzer could constitute an ignition source.
When purging a continuous gas analyzer or when purging/venting a continuous gas analyzer system suitable for Class I, Div. 2
/ Zone 2 with instrument air or ambient air, and if failure of the
safety vessel is not obvious, a leak detector (measurement in %
of LEL) or similar equipment should be used in order to detect
the unlimited discharge under abnormal conditions and to avoid
a frequent or permanent explosive atmosphere inside the analyzer or in its environment. The leak detector must be fitted at a
location where the escaping sample gas can be measured before becoming too greatly diluted. The alarm limit of the leak detector must be set to a level which enables detection of a dangerous state with consideration of the fact that the discharged
sample gas has most probably already been diluted before it
reaches the sensor.
Further important information
Gas paths material
It is strongly recommended that you use gas paths made of
metal for applications with flammable gases since such gas
paths offer the greatest safety. This particularly applies to analyzers or systems which are purged with instrument air or ambient air since an explosive atmosphere can be produced under
abnormal conditions. This immediate danger does not exist in
the case of analyzers or systems purged with inert gas.
It should be mentioned that, with an integrated system, all parts
containing flammable gas (pumps, gas coolers, filters etc.) must
be assessed in the same manner.
Purging of left-hand analyzer side (electronics side) of
continuous gas analyzers for field installation
Since the left electronics side and the right measurement side of
continuous gas analyzers are separated gas-tight from each
other, it is unnecessary to purge the electronics side in most
cases – purging of the (right-hand) measurement side is sufficient.
However, if doubt exists that flammable gas could penetrate the
left-hand electronics side and become enriched there, it is advisable to purge both sides.
Further reasons for purging analyzers
• Corrosive sample gases: Purging with air or inert gas is necessary to prevent the enrichment of corrosive gas inside the
analyzer, whereby operators or servicing personnel could be
injured or the analyzer unit could be damaged. The discharged purging gas should be released at a non-critical
point (collective vent etc.)
• Toxic gases: Purging with air or inert gas is necessary to prevent the enrichment of toxic gas inside the analyzer, whereby
operators or servicing personnel could be injured. The discharged purging gas should be released at a non-critical
point (collective vent etc.). Further information can be found in
the OSHA directives for handling toxic materials.
Purging rate / applied pressure
Purging with air: The air throughput for purging an analyzer for
field installation must be sufficient such that the concentration of
flammable gases is less than 25 % of the LEL (see NFPA 496,
Section 8.3). An air throughput of 1 l/min is recommended.
Purging with inert gas: The inert gas throughput for purging an
analyzer for field installation must be sufficient such that the
oxygen level is less than 5 % of the volume or, at a maximum,
less than 50 % of the oxygen required to form an explosive mixture (see NFPA 496, Section 8.3). An inert gas throughput of
1 l/min is recommended.
Applied pressure with inert gas: The purging and holding pressure applied to an analyzer for field installation must be sufficient
such that the oxygen level is less than 5 % of the volume or, at a
maximum, less than 50 % of the oxygen required to form an explosive mixture (see NFPA 496, Section 8.3). A pressure of 25 Pa
(0.1 inch water column) in accordance with NFPA 496 is recommended. It should be taken into consideration when applying a
pressure to an analyzer, that instead of continuous purging,
flammable gas can collect within the analyzer if the sample gas
pressure is higher than the purging pressure. It is recommendable to appropriately adapt the purging pressure within the permissible pressure range of the field device enclosure.
Exceptions: Inert gas should not be used as the purging gas for
certain applications. This particularly applies to safety-related
measurements of oxygen (LEL proof) where the sample gas has
a slight overpressure and the inert gas used for purging could
dilute the sample under abnormal conditions. Such applications
require individual assessment of the purging equipment required and the mode of operation.
Integrated systems and analyzer containers: Purging or the application of pressure to continuous gas analyzer systems must
be designed such that the requirements of NFPA 496 are complied with.
Leak detector
When purging a continuous gas analyzer or when purging/venting a continuous gas analyzer system suitable for Class I, Div. 2/
Zone 2 with instrument air or ambient air, and if failure of the
safety vessel is not obvious, a leak detector (measurement in %
of LEL) or similar equipment should be used in order to detect
unlimited discharges under abnormal conditions and to avoid a
frequent or permanent explosive atmosphere inside the analyzer
or in its environment. The leak detector must be fitted at a location where the escaping sample gas can be measured before
becoming too greatly diluted. The alarm limit of the leak detector
must be set to a level which enables detection of a dangerous
state with consideration of the fact that the discharged sample
gas has most probably already been diluted before it reaches
the sensor.
Siemens AP 01 · 2015
5/15
5
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive
■ Application
Differentiation of cases: Ex zones/danger through flammable sample gas
Gas type
Sample gas non-flammable Sample gas is flammable
below the lower explosive
and/or is rarely, and then
limit (LEL)
only briefly, above the LEL
Sample gas is flammable
and/or is occasionally
above the LEL
Category ATEX II 1G
(zone 0)
Individual acceptance test
(on request)
Individual acceptance test
(on request)
Individual acceptance test
(on request)
Category ATEX II 2G
Analyzer
(zone 1)
Operating mode "Leakage
compensation"
Ex analyzer EEx p
(certificate ATEX 2022X)
Ex analyzer EEx p
(certificate ATEX 2022X)
Ex analyzer EEx p
(certificate ATEX 2022X)
Gas path
Pipe gas path
Pipe gas path
Pipe gas path
Flame arrester
—
—
Flame arrester in sample gas
inlet and outlet
Monitoring
EEx p control device
(certificate ATEX E 082)
EEx p control device sample EEx p control device sample
gas pressure < 165 hPa, fail- gas pressure < 165 hPa, failsafe (certificate ATEX E 082) safe (certificate ATEX E 082)
Pressure switch
—
Differential pressure switch
Differential pressure switch
(when sample gas pressure is (when sample gas pressure is
not controlled fail-safely)
not controlled fail-safely)
Analyzer
Ex analyzer EEx p
(certificate ATEX 1708X)
Ex analyzer EEx p
(certificate ATEX 1708X)
Ex analyzer EEx p
(certificate ATEX 1708X)
Gas path
Pipe gas path
Pipe gas path
Pipe gas path
Flame arrester
—
—
Flame arrester in sample gas
inlet and outlet
Monitoring
EEx p control device (certificate DMT 99 ATEX E 082)
EEx p control device (certificate DMT 99 ATEX E 082)
EEx p control device (certificate DMT 99 ATEX E 082)
Pressure switch
—
—
—
Analyzer
Standard analyzer in field
housing (addition E11:
certificate ATEX 1686X)
Standard analyzer in field
housing (addition E12:
certificate ATEX 1697X)
Standard analyzer in field
housing (addition E12:
certificate ATEX 1697X)
Gas path
Pipe or hose gas path
Pipe gas path
Pipe gas path
Flame arrester
—
—
Flame arrester in sample gas
inlet and outlet
Monitoring
—
EEx p control device (certificate DMT 99 ATEX E 082)
EEx p control device (certificate DMT 99 ATEX E 082)
Analyzer
Analyzer as rack unit or in
field housing
Analyzer as rack unit or in
field housing
Analyzer as rack unit or in
field housing
Gas path
Pipe or hose gas path
Pipe gas path, recommended Pipe gas path, recommended
Enclosure purging with inert Enclosure purging with inert
gas (N2) recommended
gas (N2) recommended
Flame arrester
—
—
Flame arrester in sample gas
inlet and outlet
Monitoring
—
—
Simplified monitoring of
purging recommended
Zone
Category ATEX II 2G
(zone 1)
Operating mode
"Continuous purging"
5
Category ATEX II 3G
(zone 2)
Non-hazardous zone
Ex configurations – principle selection criteria
Signal line routing
Within zone 1
From zone 1 to zone 2
From zone 1 to non-hazardous zone
Ex i isolation amplifier
Required
Conditional use
(when energy feedback cannot be
excluded)
Conditional use
(when energy feedback cannot be
excluded)
Isolating relay
Required
Conditional use
(when energy feedback cannot be
excluded)
Conditional use
(when energy feedback cannot be
excluded)
Additional units, selection criteria (ATEX 2G)
5/16
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive
Use of OXYMAT 6 in hazardous area and/or for measurement of flammable gases
Article No.
Category
Operating mode
ATEX II 2G Leakage
(zone 1)
compensation
Continuous
purging
7MB2011-***0*-2***
7MB2011-***0*-3***
7MB2011-***0*-6***
7MB2011-***0*-7***
ATEX II 3G Flammable gases 7MB2011-***0*-0***
(zone 2)
7MB2011-***0*-1***
Non-flammable
gases
Non-hazardous
zone
CLASS 1
Div 2
Non-hazardous
gas zone
Flammable and
non-flammable
gases
Certification
(short codes)
Additional unit
Gas
Dust
Purging
unit
Flame
arrestor
Pressure
switch
Ex i isolation
amplifier
Ex i isolating relay
Ex
zone
Ex
zone
7MB8000-
7MB8000-
7MB8000-
7MB8000-
7MB8000-
X
—
X
—
2BB
6BA/6BB1)
5AA1)
3AB1)
4AB1)
2BA
6BA/6BB1)
5AA1)
3AB1)
4AA1)
o
3AB1)
4AB1)
X
—
2CB
6BA/6BB1)
X
—
2CA
6BA/6BB1)
o
3AB1)
4AA1)
E12
—
2CB
6BA/6BB1)
o
o
o
2CA
6BA/6BB1)
o
o
o
7MB2011-***0*-0***
E42
—
6BA/6BB1)
o
o
o
7MB2011-***0*-1***
E42
—
6BA/6BB1)
o
o
o
E12
—
7MB2011-***0*-0***
E11
—
o
o
o
o
o
7MB2011-***0*-1***
E11
—
o
o
o
o
o
7MB2011-***0*-0***
E41
—
o
o
o
o
7MB2011-***0*-1***
E41
—
o
o
o
o
7MB2011-***0*-0***
E40
—
o
o
o
o
7MB2011-***0*-1***
E40
—
o
o
o
o
7MB2011-***0*-0***
—
—
o
o
o
o
o
7MB2011-***0*-1***
—
—
o
o
o
o
o
7MB2021-****0-****
X
—
o
o
o
o
o
7MB2011-***0*-0***
E20
—
1AA
6BA/6BB
o
o
o
7MB2011-***0*-1***
E20
—
1AA
6BA/6BB
o
o
o
7MB2021-*****-****2)
E20
—
1AA
6BA/6BB
o
o
o
— Combination not allowed
X Possible combination, no additional data required
o Not required
Ex configurations, possible combinations
1)
Conditionally required: see table of Ex configurations, selection criteria
2)
Installation in additional enclosure required
Siemens AP 01 · 2015
5/17
5
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive
Use of ULTRAMAT 6 in hazardous area and/or for measurement of flammable gases
Article No.
Category
Operating mode
7MB21117MB2112-
ATEX II 2G
(zone 1)
Leakage
compensation
*****-2*A*
ATEX II 3G
(zone 2)
Dust
Ex
zone
Ex zone 7MB8000-
X
X
*****-7*A*
X
Flammable
gases
*****-0*A*
Flammable and
non-flammable
gases
7MB8000-
Pressure switch
Ex i isolation Ex i isolating
amplifier
relay
7MB8000-
7MB8000-
7MB8000-
6BA/6BB1)
5AA1)
3AB1)
4AB1)
2BA
6BA/6BB1)
5AA1)
3AB1)
4AA1)
—
2CB
6BA/6BB1)
o
3AB1)
4AB1)
—
2CA
6BA/6BB1)
o
3AB1)
4AA1)
—
6BA/6BB1)
o
o
o
—
E42
—
6BA/6BB1)
o
o
o
*****-0*A*
E12
—
2CB
o
o
o
o
*****-1*A*
E12
—
2CA
o
o
o
o
*****-1*A*
E42
*****-0*A*
E41
—
o
o
o
o
*****-1*A*
E41
—
o
o
o
o
o
o
o
o
o
*****-0*A*
E11
—
*****-1*A*
E11
—
o
o
o
o
o
*****-0*A*
X
E40
—
o
o
o
o
*****-1*A*
X
E40
—
o
o
o
o
7MB2111*****-0*A*,
E20
—
1AA
6BA/6BB
o
o
o
7MB2111*****-1*A*
E20
—
1AA
6BA/6BB
o
o
o
7MB212******-****2)
E20
—
1AA
6BA/6BB
o
o
o
— Combination not allowed
X Possible combination, no additional data required
o Not required
1)
Conditionally required; see table of Ex configurations, selection criteria.
2)
Installation in additional enclosure required
5/18
Purging unit Flame
arrestor
2BB
—
X
*****-6*A*
Non-hazard- Non-hazardous
ous zone
gas zone
5
Gas
Continuous
purging
Non-flammable
gases
CLASS 1
Div 2
*****-3*A*
Certification and Additional unit
short codes
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive
Use of CALOMAT 6 in hazardous area and/or for measurement of flammable gases
Article No.
Category
Operating
mode
ATEX II 2G
(zone 1)
Leakage
compensation
Continuous
purging
Flammable
gases
ATEX II 3G
(Zone 2)
Non-flammable
gases
Certification
Additional unit
Gas
Purging unit Flame arrester
Pressure
switch
Ex i isolation
amplifier
Ex i isolating relay
7MB8000-
7MB8000-
7MB8000-
7MB8000-
Dust
7MB8000-
7MB2511***0*-0AE*
X
—
2BB
6BA/6BB1)
5AA1)
3AB1)
4AB1)
7MB2511***0*-1AE*
X
—
2BA
6BA/6BB1)
5AA1)
3AB1)
4AA1)
7MB2511***0*-0AF*
X
—
2CB
6BA/6BB1)
o
3AB1)
4AB1)
7MB2511***0*-1AF*
X
—
2CA
6BA/6BB1)
o
3AB1)
4AA1)
7MB2511***0*-*AJ*
X
X
—
6BA/6BB1)
o
o
o
7MB2511***0*-*AC*
X
—
2CA/2CB
6BA/6BB1)
o
o
o
7MB2521***0*-*AB*2)
X
—
acc. to
Certificate
6BA/6BB1)
o
o
o
7MB2511***0*-*AH*
X
X
—
o
o
o
o
7MB2511***0*-*AB*
X
—
o
o
o
o
o
7MB2521***0*-*AB*
X
—
o
o
o
o
o
Non-hazardous
zone
Non-hazardous
gas zone
7MB2511***0*-*AG*
—
X
—
o
o
o
o
CLASS 1
Div 2
Flammable and
non-flammable
gases
7MB2511***0*-*AD*
X
—
1AA
6BA/6BB
o
o
o
7MB2521***0*-*AD*2)
X
—
1AA
6BA/6BB
o
o
o
X Possible combination, no additional data required
— Combination not allowed
o Not required
Ex configurations, possible combinations
1)
Required under certain conditions; see table of Ex configurations, selection criteria
2)
Installation in additional housing required
Use of ULTRAMAT 23 in hazardous area and/or for measurement of flammable gases
Article No.
Category
Operating mode
Additional unit
Gas
Purging
unit
Flame
arrestor
Pressure switch Ex i isolation
amplifier
Ex i isolating relay
7MB8000-
7MB8000-
7MB8000-
7MB8000-
Dust
Ex zone Ex zone
7MB8000-
*****-****
E20
—
o
o1)
o
o
o
Non-flammable
gases2)
*****-****
E20
—
o
o
o
o
o
Flammable and
non-flammable
gases2)
*****-****
E20
—
1AA
o1)
o
o
o
ATEX II 3G Flammable
(zone 2)
gases2)
Class 1
Div 2
7MB233*-
Certification and
short codes
— Combination not allowed
o Not required/not defined
1)
Required under certain conditions
2)
Installation in additional housing required
Siemens AP 01 · 2015
5/19
5
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive
Ex approval
ATEX
CLASS I Div 2
2G - LC
2G - CP
see basic MLFB
ATEX
3G burn.
3G nbrn.
FM
CSA
3D (dust)
Z + E12
Z + E11
Z + E20
Z + E20
Z + E4X
except CALOMAT
except
CALOMAT
Field device
U6F
ATEX 2022 X
ATEX 1708 X
ATEX 1697 X
ATEX 1686 X
3016050
1526657
ATEX 2278 X
U6F-S
ATEX 2022 X
ATEX 1708 X
ATEX 1697 X
ATEX 1686 X
3016050
1526657
—
O6F
ATEX 2022 X
ATEX 1708 X
ATEX 1697 X
ATEX 1686 X
3016050
1526657
ATEX 2278 X
O6F-S
ATEX 2022 X
ATEX 1708 X
ATEX 1697 X
ATEX 1686 X
3016050
1526657
—
C6F
ATEX 2022 X
ATEX 1708 X
ATEX 1697 X
ATEX 1697 X
3018862
1526660
ATEX 2278 X
C6F-S
ATEX 2022 X
ATEX 1708 X
ATEX 1697 X
ATEX 1697 X
o
1526657
—
C62F
ATEX 2022 X
ATEX 1708 X
—
—
—
—
—
C62F-S
ATEX 2022 X
ATEX 1708 X
—
—
—
—
—
U6E
—
—
—
3016050
1526657
—
U6E-S
—
—
—
3016050
1526657
—
O6E
—
—
—
3016050
1526657
—
O6E-S
—
—
—
3016050
1526657
—
OU6E
—
—
—
3016050
1526657
—
OU6E-S
—
—
—
3016050
1526657
—
C6E
—
—
ATEX 1873 X
3018862
1526660
—
C6E-S
—
—
ATEX 1873 X
o
1526660
—
C62E
—
—
—
—
—
—
C62E-S
—
—
—
—
—
—
O61
—
—
—
—
—
—
O64
—
—
—
—
—
—
F6
—
—
—
—
U23
—
—
ATEX 0027 x
3035269
2133209
—
U23 O2p
—
—
ATEX 0027 x
3035269
2133209
—
U23 H2S
—
—
ATEX 0027 x
3035269
2133209
—
19" rack unit
5
—
(SET)
CP = Continuous Purging
LC = Leakage compensation
… -S = Special application
burn. = Flammable gases
nbrn. = Non-flammable gases
o = In progress
Possible combinations of PROFIBUS with Ex applications
ATEX 2022 X
PROFIBUS PA Ex-i
ATEX 1708 X
PROFIBUS PA Ex-i
ATEX 1697 X
FM/CSA
PROFIBUS PA or DP
PROFIBUS PA Ex-i
ATEX 2278 X
PROFIBUS DP - Non-hazardous gas installation
(Z + E40)
ATEX 1686 X
PROFIBUS DP
ATEX 2278 X
PROFIBUS DP in combination ATEX 1686 X
(Z + E41)
ATEX 1873 X
PROFIBUS DP
ATEX 2278 X
PROFIBUS PA Ex-i in combination with ATEX 1697 X
(Z + E42)
5/20
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive - ATEX II 2G control unit
■ Overview
EEx p safety equipment (purging unit)
Additional function
The EEx p safety equipment to be connected to the analyzer
must have at least the following features:
• Adjustable pre-purging phase; purging gas flow must be
approximately 50 l/min
• Limitation of purging gas pressure during the pre-purging
phase: < 165 hPa
• "Leakage compensation" or "Continuous purging"
• Connection for purging gas lines with Ø 10 mm or Ø 3/8" from
and to the analyzer
• Pressure after pressure reducer
- 0.2 to 0.4 MPa (leakage compensation)
- 0.2 to 0.3 MPa (continuous purging)
• Max. permissible input pressure 0.6 MPa
• Relay contacts for all-pole isolation of the analyzer supply voltage
• Connection option for a key-operated switch and a pressure
switch (intrinsically-safe circuits)
• Device version "Leakage compensation": Connection option
for a pressure switch with intrinsically-safe scan
By connecting additional pressure sensors, the internal pressure
of the enclosure is maintained at a pressure higher than that of
the sample gas by means of a proportional valve. During the prepurging phase the purging gas flow is max. 4 100 Nl/h with an
internal enclosure pressure of 50 hPa.
The Bartec control unit APEX 2003.SI/B meets the requirements
for "Pressured enclosure with leakage compensation or continuous purging" in accordance with EN 50016 or ATEX guidelines,
and can be used as explosion-proof equipment in Zones 1
and 2.
The purging unit ensures that in a closed enclosure, any explosive gases will be purged and then a pressure higher than the
surrounding atmosphere will be generated and maintained.
4 programmable relay inputs (8 relay contacts) are available to
separate the data lines.
During the operating phase, the pressure inside the enclosure
must be maintained at a level at least 50 Pa higher than that of
the surrounding atmosphere. If the internal pressure drops below the defined minimum value, safety equipment must shut
down the entire electical supply to the EEx-p enclosure autonomously (including the possible data lines) .
Enclosures frequently contain accessories to which flammable
gases or sometimes also flammable gas mixtures are fed via a
separate gas path. This is the case with gas analyzers, for example. In this case, it must be ensured that the pressure of the protective gas is always more than 50 Pa higher than the pressure
of the sample gas.
After mounting the control device APEX 2003.SI/B on the EEx-p
enclosure, and after connecting the mains power and the protective gas, the control module regulates and monitors the flow
of purging gas automatically during the pre-purging phase, and
the internal enclosure pressure during the operating phase.
If the minimum operating pressure of the enclosure is exceeded
and if flow through the pressure monitoring module is sufficient,
the pressure sensors forward the sensor module signals to the
control module.
A non-hazardous area is thus created in the enclosure in which
electrical devices can be installed that are not themselves explosion-proof. After commissioning, a distinction is made between
the pre-purging phase and the operating phase:
5
The pre-purging phase is necessary to ensure that any explosive atmposphere entering during the standstill time does not
become a hazard; the enclosure must therefore be purged with
protective gas (air from a non-hazardous area or inert gas) before commissioning.
Siemens AP 01 · 2015
5/21
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive - ATEX II 2G control unit, leakage compensation
■ Overview
Pressure sensors
MIN A = 0 … 300 hPa,
MIN B = 0 … 300 hPa,
MAX = 0 … 300 hPa,
MAX 1 = 0 … 300 hPa,
DIFF A = 0 … 25 hPa,
DIFF B = 0 … 25 hPa
Prepurging time
0 … 99 min; 5 sec dropout
delayed
Weight
11 kg
BARTEC EEx p control unit "Leakage compensation"
The APEX 2003.SI/A2 control unit controls and monitors the prepurging and operating phases of gas analyzers with containment systems in hazardous zone 1.
The control unit redundantly monitors the set overpressure of the
purging gas. When the overpressure decreases, it is corrected
to the adjustable setpoint (max. purging gas pressure 165 hPa).
■ Technical specifications
Control unit ATEX IIG, compensation of losses through leaks
Guidelines
EC EMC directive 89/336/EEC,
EC low voltage, RL 73/23/EEC,
Ex directive 94/9/EC
Design
Explosion-protected enclosure
(EEx e) with viewing window in
the cover
Enclosure material
Glass fiber-reinforced polyester
Degree of protection
IP65
Terminals
Electrical data
Supply voltage
230 V AC (115 V AC) ± 10 %,
48 … 62 Hz
Power consumption
21 W /230 V
NO contacts
K2/3; max. 250 V, 5 A
with cos ϕ = 1,
K4/K5; supply voltage or floating,
max. 250 V, 5 A with cos ϕ = 1
Communication
RS 485 interface
Temperature switching value
(option)
0 … +40 °C
Explosion protection
2.5 mm, finely stranded
Marking
EEx e d ib [ia p] IIC T4/T6
Test certification
DMT 99 ATEX E 082
Ambient temperature
-20 … +40 °C
■ Dimensional drawings
5
BARTEC control unit, dimensions in mm
5/22
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive - ATEX II 2G control unit, leakage compensation
■ Schematics
$QDO\]HU
(([SFRQWUROXQLW
,QHUWJDVRXWOHW
3UHVVXUHVHQVRU
',))&
6DPSOH
FHOO
2XWOHW
6DPSOHJDV
,QOHW
,QHUWJDVLQOHW
3UHVVXUHVZLWFK
UHGXQGDQW
YHUVLRQ
'T
03D
BARTEC control unit, leakage compensation, gas connection diagram
([WFXUUHQW
VRXUFLQJ 7HPSHUDWXUH
VZLWFK
VHQVRU
6HQVRU
PRGXOH
.H\
VZLWFK
212))
VZLWFK
([WFXUUHQW
VRXUFLQJ %ULGJHIRU
VZLWFK FDOLEUDWLRQ
5
EEx i
1-12
5
8
13 14
15 16
17 18
&RQWUROPRGXOH
L1
N
PE
20
21
22
23
24
K2/K3
K4/K5
K1
25 26 27
19
28 29
2XWSXW
YDOYH
31 32
+ -
39 41 43 45
,QSXW
YDOYH
'DWD
FDEOH
46 44 42 40
35 34
+
'DWDFDEOH
47 48
-
3RZHUVXSSO\
(([S
DQDO\]HU
BARTEC control unit, leakage compensation, electric connection diagram
Siemens AP 01 · 2015
5/23
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive - ATEX II 2G/3G control unit, continuous purging
■ Overview
Terminals
2.5 mm, finely stranded
Pressure sensors
MIN A = 0 … 25 hPa,
MIN B = 0 … 25 hPa,
MAX = 0 … 25 hPa,
MAX 1 = 0 … 25 hPa,
DIFF A = 0 … 25 hPa,
DIFF B = 0 … 25 hPa
The control unit redundantly monitors the continuous flow of protective gas through the connected analyzer and thereby dilutes
any escaping sample gas to below the lower explosive limit
(max. purging gas pressure 25 hPa).
Prepurging time
0 … 99 min; 5 sec dropout delayed
Weight
10 kg
At the same time, a higher pressure is maintained inside the
EEx-p enclosure than in the surrounding atmosphere. If the flow
of purging gas or the internal pressure falls below a determined
minimum value, the supply voltage to the equipment in the pressurized enclosure is shut down.
Supply voltage
230 V AC (115 V AC) ± 10 %,
48 … 62 Hz
Power consumption
21 W /230 V
NO contacts
K2/3; max. 250 V, 5 A with cos ϕ = 1,
K4/K5; supply voltage or floating,
max. 250 V, 5 A with cos ϕ = 1
Communication
RS 485 interface
Temperature switching value
(option)
0 … +40 °C
BARTEC EEx p control unit "Continuous purging"
The APEX 2003.SI/A4 control unit controls and monitors the prepurging and operating phases of gas analyzers with containment systems in Ex zone 1 and Ex zone 2.
4 programmable relay inputs (8 relay contacts) are available to
separate the data lines.
■ Technical specifications
Control unit ATEX II 2G,
continuous purging
Guidelines
Electrical data
Explosion protection
EC EMC directive 89/336/EEC,
EC low voltage, RL 73/23/EEC,
Ex directive 94/9/EC
Design
Explosion-protected enclosure (EEx e)
with viewing window in the cover
Degree of protection
IP65
Marking
EEx e d ib [ia p] IIC T4/T6
Test certification
DMT 99 ATEX E 082
Ambient temperature
-20 … +40 °C
■ Dimensional drawings
5
BARTEC control unit, dimensions in mm
5/24
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive - ATEX II 2G/3G control unit, continuous purging
■ Schematics
$QDO\]HU
(([SFRQWUROXQLW
2SHUDWLQJIORZQR]]OH
3XUJLQJJDV
RXWOHW
2XWOHW
6DPSOH
FHOO
6DPSOHJDV
,QOHW
3UHSXUJLQJ21
Dq
3XUJLQJJDV
LQOHW
PD[03D
6HWWLQJRSHUDWLQJIORZ
BARTEC control unit, continuous purging, gas connection diagram
Sensor
module
Temperature
switch
Key
switch
Jumper for
adjustment
5
T
EEx i
1-12
5
8
15 16
17 18
Control module
20
23
24
K2/K3
K4/K5
K1
25 26 27
19
28 29
Purging valve
39 41 43 45
L1
N
PE
Data
line
46 44 42 40
35 34
+
Data line
47 48
-
Supply voltage
EEx p
analyzer
BARTEC control unit, continuous purging, electric connection diagram
Siemens AP 01 · 2015
5/25
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive - Purging unit FM (Class I Div 2)
■ Application
The Ex purging unit MiniPurge FM is used to monitor the pressure during continuous purging of an analyzer with purging or
inert gas. If the pressure falls below the set value, an optical
display is triggered and the relay is activated. This monitoring
unit is driven by the purging gas pressure and therefore does not
require an additional power supply.
Switching contact
Via SPCO switch approved for
Class 1 Division 2
Settings
Lower response limit 0.5 hPa set
relative to purging gas flow of
1 … 2 l/min
Prepurging time
Is defined by operator, and controlled manually
Enclosure pressure limitation
By means of stainless steel with
integrated flame arrestor; opens
at 10 hPa ± 10 %
■ Technical specifications
5
Classification
Class I Division 2
Enclosure dimensions (in mm)
444 x 438 x 275
Enclosure volume (I)
Approx. 50 l
Enclosure pressure (normal)
1 hPa
FM certificate
Certificate of compliance
1X8A4.AE / 0B3A3.AE
Reaction upon failure of pressure
Opening of switching contact,
and alarm via signal indicator
(red display)
System type
MiniPurge complete system
Operating mode
Continuous purging
Type of enclosure
Reinforced polycarbonate
Enclosure surface
RAL 7035 gray with transparent
cover
Pressure supply
Dry, oil-free air or inert gas with
regulated pressure of approx.
2000 hPa (30 psi) at inlet of
MiniPurge
Supply connections
Pressure via ¼ BSPP connection,
pressure hose at least ½" or
12 mm
Display (signal indicator)
■ Dimensional drawings
Pneumatically driven color signal: green/red
MiniPurge, dimensions in mm
■ Schematics
Analyzer
Sample
cell
MiniPurge, purging unit, Class I, Div 2, gas connection diagram
5/26
Siemens AP 01 · 2015
Purging gas
inlet
Cable connection
Sample gas
Purging gas
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive - Additional units
■ Overview
Installation of Ex isolation modules / Ex i isolation amplifiers
The mounting rail in the analyzer has a length of approximately
250 mm, with the number of installable components being
limited.
The maximum installation height is approximately 95 mm; however, it is less in the area of the display (88 mm). The width must
not exceed 80 mm.
The add-on devices must be approved for an ambient temperature of up to 60 °C; this temperature can be reached under extreme marginal conditions.
The label of the analyzer shows all types of explosion protection
that the device itself and the components can have.
Installation must always be discussed with the competent experts.
Slots in the analyzer and the purging unit.
Ex i isolation
amplifier
Ex isolating
relay 8S
Comment
Analyzers
2
2
Max. 2
Bartec purging
unit
0
1
Max. 1
Ex i isolation amplifier, 7MB8000-3AB
The analog inputs and outputs of the analyzers are not intrinsically safe in the basic version.
The analog output can be supplemented later with an intrinsically-safe analog output (explosion protection type EEx ib II C or
EEx ia II C). For this purpose, a suitable commercially available
isolating transformer can be mounted on a rail in the device.
Technical data:
• Intrinsically-safe analog output
• mA isolating transformer without power supply
• For installing in the analyzer
Isolation amplifier, rail mounting
• Intrinsically-safe output EEx ia IIC
• Galvanic isolation
Technical data
Isolating relay (signal outputs with external voltage supply)
7MB8000-4AA/-4AB
If the device has to be opened, it must be isolated at all poles
from the mains cable, the binary inputs, relay outputs, analog inputs/ outputs, RS 485 interface cable, and the PROFIBUS PA cables (not Ex i). For this purpose, isolating relays must be inserted. Intrinsically-safe circuits are excepted from this.
An isolating relay must be explosion-proof if it is to be set up in
an area subject to explosion hazard.
Protective gas
• The fed-in gases are not flammable. Air from an area not subject to explosion hazard can be used as the protective gas
(purging gas).
• Flammable gases or gas mixtures that are rarely or only briefly
ignitable are fed in. The enclosure must be flooded with inert
gas.
• Gas mixtures that are occasionally ignitable are introduced.
As with b), the enclosure must be flooded with inert gas; in addition, the sample gas inlet and outlet must be equipped with
flame arrestors.
• Explosive gas mixtures that are present in the long term or permanently must not be connected!
Flame arrestors
If the gas mixture to be measured sometimes has an explosive
composition, flame arrestors must be installed in the sample gas
inlet and, in certain circumstances, also in the sample gas outlet,
in addition to the application already described with flammable
sample gases.
The material of the flame arrestors must be resistant to the flowtype sample gas mixture. For this reason, they are available in
two different versions:
• The detonation protection (Ex designation Ex IIG IIC) is used
to prevent flashover in the case of unstable detonations and
deflagrations of explosive gas or vapor/air mixtures of explosion group IIC.
• The flame arrestor consists essentially of a detonation-proof
enclosure with gas connections and a ceramic sinter cartridge
built into the housing (max. pore width: 80 µm) to prevent
flashover.
It may be heated up to 150 °C and subjected to a pressure up to
3 bar (abs.).
Input voltage
8.4 V + 0.02 x load x (V/Ω)
Linearity
< 0.1 V
Temperature impact
< 0.1 %/10 K
Power supply
8.4 ... -30 V DC from the current
loop
Length
83.5 mm
Diameter
32 mm
Weight
160 g
External thread
M 30 x 1.5; 30 mm long
Ambient temperature
-20 °C … +60 °C
Gas connections
G 1/4"
Relative humidity
< 95 %, no condensation
Material
Stainless steel or Hastelloy C
Max. gas operating pressure
3 bar (abs.)
II (1) G D [Eex ia] IIC
Max. operating temperature
150 °C (200 °C on request)
EC type-examination certificate
TÜV 98 ATEX 1338
Explosion group
IIC
Safety limits
U0 ≤ 12.6 V
I0 ≤ 95 mA
Explosion protection
Type of protection
Technical data
Siemens AP 01 · 2015
5/27
5
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, extractive - Additional units
Differential pressure switch: 7MB8000-5AA
There must be a fail-safe guarantee that the sample gas pressure will never exceed 5 hPa under the purging gas pressure.
If this cannot be guaranteed on the plant side, a differential pressure switch must be mounted between the sample gas line and
the purging gas line and connected electrically with the purging
unit.
The differential pressure switch always has contact with the sample gas.
Technical data
• Differential pressure switch with magnetic spring contact
• Type 821.1
• Materials coming into contact with the sample gas:
Stainless steel, mat. no. 1.4571
• Measuring range: -20 ... +20 hPa
• Trigger point: adjustable
5
5/28
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, in-situ - LDS 6
■ Overview
"Intrinsic safety" is limited to circuits with relatively small capacity. To prevent sparks during closing or opening of an electrical
circuit, the capacitance and inductance of an intrinsically-safe
circuit are also limited depending on the maximum current and
voltage values. No sparks or thermal effects which could lead to
ignition of an explosive atmosphere occur either in normal operation or in the process upset. Therefore intrinsically-safe circuits
may also be connected or disconnected during operation when
live, since the safety is also guaranteed in the event of a shortcircuit or interruption. The following figure shows the block diagram for the type of protection "Intrinsic safety".
Sensors and cables for applications of the LDS 6 in
hazardous areas
Intrinsic safety and intrinsically-safe circuit
Principles
The physical principle for the degree of protection "Intrinsic
safety" is that a certain minimum ignition energy is required to ignite an explosive atmosphere. In an intrinsically-safe circuit, this
minimum ignition energy is not present in the hazardous area,
neither during normal operation nor in the event of an incident.
The intrinsic safety of a circuit is achieved by limiting the current,
voltage, power and temperature. Therefore the type of protection
Safe area
Hazardous area
Ra
La
Li
Limited temperature
rise
Ca
F
Ci
U0
Limited
spark
energy
Ri
PA
U0
Ri
Li
Ci
F
Max. output voltage
Internal resistor
Internal inductivity
Internal capacitance
Fuse
PA
Ra
La
Ca
Potential compensation
External resistor
External inductivity
External capacitance
5
Block diagram for voltage/current limiting with type of protection "Intrinsic safety"
Intrinsically-safe electrical equipment and intrinsically-safe components of associated equipment are divided into two categories ("Protection levels"). A differentiation is made between the
protection levels "ia" and "ib". Protection level "ib" also provides
protection should one protective measure fail (fault redundancy
1). Protection level "ia" provides protection even if two protective
measures should fail (fault redundancy 2).
The standard refers to so-called "countable faults" instead of protective measures. These refer to protective measures, such as
current limiting resistors, Zener diodes for voltage limiting, fuses,
safe distances etc., i.e. all components or measures which implement an exactly defined safety function for the associated
equipment.
Protection level
Description according to EN 50020
Installation
ia
The intrinsically-safe electrical equipment must not cause an ignition:
Up to zone 0
• During normal operation or with the existence of non-countable safety-related faults which result in
the most unfavorable condition.
• During normal operation or with the existence of countable faults plus non-countable faults which
result in the most unfavorable condition.
• During normal operation or with the existence of two countable faults plus non-countable faults
which result in the most unfavorable condition.
ib
The intrinsically-safe electrical equipment must not cause an ignition:
Zone 2
• During normal operation or with the existence of non-countable faults which result in the most un- Zone 1
favorable condition.
• During normal operation or with the existence of countable faults plus non-countable faults which
result in the most unfavorable condition.
Protection levels of electrical equipment and intrinsically-safe components
Siemens AP 01 · 2015
5/29
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, in-situ - LDS 6
Minimum ignition curves
Typical setup of an LDS 6 system in a hazardous area
The "minimum ignition curves" are used to evaluate an intrinsically- safe circuit and to determine the maximum capacitance
and inductance values. They are included in the valid intrinsically-safe standards (EN 50020 or DIN EN 50020 and
IEC 60079-11 or EN 60079-11). Minimum ignition curves exist for
resistive, capacitive and inductive circuits. Different minimum ignition curves are applied depending on the gas group for which
an intrinsically-safe circuit is to be designed, and take into account the minimum ignition energies of the gas groups.
LDS 6 is capable of measuring gases in EEx environments, provided all safety-relevant points are particularly observed. The
central unit of LDS 6 must always be located outside of hazardous areas.
Associated electrical equipment
allow operation inside almost any EEx-classified area.
Associated electrical equipment is a reference to equipment
which contains one or more intrinsically-safe circuits, but in
which not all circuits are intrinsically-safe. Associated electrical
equipment usually has an isolating function, i.e. separating intrinsically-safe equipment from non-intrinsically-safe equipment
within a signal circuit. Such devices include, for example: safety
barriers, switch amplifiers, power supply units etc.
For the intrinsically-safe version, an EEx barrier must be provided between the sensors and central unit. A typical version is
shown in the following figure for intrinsically safe EEx ia sensors.
5
DIN/EN 60079-14 (VDE 165, Part 1) must be observed when selecting and routing the cables. Particular attention must be paid
to the characteristic values, such as electric strength and minimum cross-section. In the case of intrinsically-safe circuits, the
cable capacitance and inductance must be observed in addition, and must not exceed the values specified for the intrinsically-safe or associated equipment used (Co, Lo). The connection points and cables of intrinsically-safe circuits must be
identified, e.g. in light blue, and be separated from the other
connection points and cables of non-intrinsically-safe circuits.
Transmitter
Hybrid
cable
Cables
CD6 Ex
Receiver
Sensor connecting cable
Ex zone
Ex barrier
Hybrid cable
Associated electrical equipment is not explosion-proof and must
therefore not be installed in hazardous areas. It only contains intrinsically-safe circuits which may be routed into the hazardous
area. Associated electrical equipment is identified by a square
bracket enclosing "EEx" and the symbol for the type of protection, as well as absence of the temperature class
(e.g. [EEx ia] IIC).
Special EEx-type sensors (see explosion protection tag),
certified according to
• ATEX II 1G Ex ia IIC T4 and
• ATEX II 1 D Ex iaD 20 IP65 T135 °C
Typical setup of LDS 6 in a hazardous area
5/30
Siemens AP 01 · 2015
LDS 6
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, in-situ - LDS 6, EEx barrier
■ Overview
■ Technical specifications
The EEx barrier is included in the scope of delivery of the CD 6
sensors in EEx ia version. It is meant for wall mounting close to
the location of the LDS 6 central unit within an EEx-safe environment.
The EEx barrier defines the interface between the analyzer central unit and the intrinsically-safe sensor heads and ensures under all circumstances that the total electrical energy transferred
via the hybrid cable to the sensors is always less that than
needed to ignite combustible gas mixtures.
EEx barrier
Hazardous area output
• Minimum output voltage
12.5 V at 45 mA
• Maximum output voltage
24 V at 170 Ω
• Current limitation
45 mA
Max. power consumption
(45 mA output)
90 mA at 24 V,
110 mA at 20 ... 35 V DC
Safety description
25 V, 170 Ω, 147 mA,
Um = 250 Vrms or DC
■ Dimensional drawings
250
350
146
5
EEx barrier, dimensions in mm
Siemens AP 01 · 2015
5/31
© Siemens AG 2015
General information
Ex versions
Continuous gas analysis, in-situ - SITRANS SL
■ Overview
The SITRANS SL consists of a flameproof transmitter, a flameproof receiver, and optionally a specially certified junction box of
increased safety. The complete analytical system is accommodated in the two flameproof enclosures which are connected together by a cable. A further cable is connected to the receiver,
and serves as the power supply and customer interface. Both
cables have a fixed connection to the flameproof enclosure.
They must be connected in a suitable junction box if applicable.
The receiver also has a local display.
SITRANS SL can be operated by Ex-certified infrared remote
control.
The laser has a radiated power of 0.8 mW. The irradiance is
approx. 10.9 µW/mm2. This is below the values permitted in
EN 60079-28.
An Ex concept with type of explosion protection "Pressurized enclosure d" is used for the SITRANS SL. The enclosure used resists an explosion caused by an explosive gas mixture in the analyzer. Ignition of an explosive atmosphere produced outside the
enclosure is therefore reliably prevented.
The SITRANS SL is available with ATEX or FM certificates.
Connection cable
Analog-I/O, Modbus
Transmitter unit
Connection cable
PROFIBUS DP
Receiver unit
Connection
cable
ATEX cable
gland
5
Remote control
ATEX cable
gland
Mounting bracket for
junction box
Cable gland for
Ethernet cable
aP
Ex-e junction box
/PD[ P
Special conditions
Repairing of the flameproof gaps must only be carried out in accordance with the manufacturer’s design directives.
5/32
Siemens AP 01 · 2015
aP
Ex-e junction box
Connection conditions
• Unused openings must be closed in accordance with
EN 60079-1 Section 11.9.
• A fixed cable must be used for the SITRANS SL gas analyzer,
and routed such that it is sufficiently protected against damage.
• If the temperature on the entry components is higher than
70 °C, appropriate temperature-resistant cables must be
used.
• The SITRANS SL gas analyzer must be included in the local
equipotential bonding.
• The end of the SITRANS SL gas analyzer cable must be connected in an enclosure which complies with the requirements
of a recognized type of explosion protection in accordance
with EN 60079-0, Section 1, if the connection is made in the
hazardous area.
© Siemens AG 2015
General information
Ex versions
Process gas chromatography
■ Overview
Safety is extremely important during the storage, manufacture,
processing and transportation of flammable materials, especially in the chemical and petrochemical industries, and in oil
and gas production.
Gas chromatographs and the sample preparation carried out in
these plants must be designed such that no explosive mixtures
can be ignited when applied. National directives and guidelines
as well as international standards regulate the equipment prerequisites.
Basic design with MAXUM edition II
The electronic components are accommodated in a pressurized
area. If the overpressure falls below a certain value, a control device switches off the power supply when a defined threshold is
reached.
The MAXUM edition II is available with certificates according to
CSA/US, or ATEX certificates according to Cenelec for the EU
market.
The MAXUM edition II and MicroSAM chromatographs can be
used in hazardous areas according to ATEX II 2G (zone 1) and
ATEX II 3G (zone 2).
The following individual protective measures apply:
Type of protection: pressurized enclosure "p"
The ignition source is enclosed by a protective gas with overpressure (at least 0.5 hPa). Air is used in most cases. The surrounding explosive atmosphere cannot penetrate.
No flammable sample or flammable carrier gas may be passed
into this pressurized area. Switching valves for the carrier gas H2
must therefore be mounted outside this area.
The strength of the enclosure is at least 1.5 times the resistance
to operating pressure.
An alarm is generated in the event of failure of the purging gas
or the overpressure.
The electronics area must be purged prior to starting up the
equipment.
This purging also provides additional protection in corrosive environments.
Type of protection: flameproof enclosure "d"
This type of protection is used for most of our detectors. The detector is fitted in an enclosure which is resistant to the explosion
of an explosive atmosphere within it. This means that the mechanical stability of the enclosure must withstand this internal explosion pressure.
MAXUM edition II
Basic design with MicroSAM
The MicroSAM is designed such that all components (electronic
and analytical) are accommodated in a flameproof enclosure.
The advantage of this version is that no additional purging gases
or safety monitoring systems are required.
The MicroSAM is available with ATEX or FM/CSA certificates for
the US market.
Joints must also be so tight that hot gas escaping between two
parts of the enclosure is not explosive.
Ignition of an explosive atmosphere produced outside the enclosure is therefore reliably prevented. This is known as resistance
to transmission of internal ignition.
The FID, TCD and FPD detectors are available with this degree
of protection.
The maximum demands with regard to the joint parameters
(width/length) are placed on enclosures of explosion group II C.
MicroSAM is an example of this.
MicroSAM
Siemens AP 01 · 2015
5/33
5
© Siemens AG 2015
General information
Tables
Conversion tables
■ Overview
$U
0
2
$LU
&O
62
1
&O
2
+
&
6
+
2
&
+
3+
+
&
JP
0
0
0
0
0
0
0 JP
0
1H
1
+&
0
0 + 2
+
& +
&
&2
1+ 0 &+ 0 +
5
0 00ROHFXODUZHLJKW
([DPSOHIRU62JPFRUUHVSRQGVWR9RO
Conversion from g/m3 to vol. % (at 293 K and 1013 hPa)
Conversion tables
Component
Molecular mass 1 ppm in mg/m3 1 mg/m3 in ppm
hPa
psia
CO
28
1.250
0.800
420
6.091
NO
30
1.339
0.747
500
7.251
SO2
64
2.857
0.350
600
8.202
CO2
44
1.964
0.509
800
11.603
CH4
16
0.714
1.400
1 000
14.503
C2H4
28
1.250
0.800
1 160
16.824
C2H6
30
1.339
0.747
1 200
17.404
C4H10
58
2.589
0.386
1 300
18.854
C3H8
44
1.964
0.509
1 485
21.538
C3H6
42
1.875
0.533
1 500
21.755
2 000
29.007
psia
3 000
43.511
1013.25
14.69595
3 500
50.763
1000
14.50377
4 000
58.015
0.0145038
Conversion hPa ↔ psia
Conversion ppm ↔
mg/m3
(1 atm; 0 °C), examples
atm
atm
bar
1.01325
bar
0.9869
hPa
0.0009869
0.001
psia
0.0680
0.06894
Conversion of pressure units
5/34
Siemens AP 01 · 2015
hPa
68.94
9RO
© Siemens AG 2015
General information
Tables
Dew point/saturation table
Dew point
°C
°F
-100
-90
Dew point
Water content
-148.0
-130.0
ppm (vol.)
0.014
0.008
Water content
g/m3 1)
°C
°F
ppm (vol.)
g/m3 1)
0.0000103
0
+32.0
6 020
4.84
0.000119
+1
+33.8
6 480
5.2
+36.8
6 850
5.6
-80
-112.0
0.54
0.000565
+2
-70
-94.0
2.57
0.00269
+3
+37.4
7 487
6.0
-60
-78.0
10.7
0.011
+4
+39.2
8 022
6.4
-55
-67.0
20.8
0.021
+5
+41
8 595
6.8
-50
-58.0
38.4
0.038
+6
+42.8
9 216
7.3
-48
-54.4
49.6
0.049
+7
+44.6
9 875
7.8
-46
-50.8
63.0
0.061
+8
+46.4
10 584
8.3
0.067
+9
+48.2
11 318
8.8
0.076
+10
+50
12 114
9.4
0.097
+11
+51.8
12 935
10.0
0.11
+12
+53.6
13 806
10.7
+55.4
14 800
11.4
-45
-44
-42
-40
-49.0
-47.2
-43.6
-40.0
68.5
80.1
101.5
126.9
-39
-38.2
137.0
0.12
+13
-38
-36.4
158.0
0.14
+14
+57.2
15 796
12.1
-37
-34.6
174.1
0.16
+15
+59
16 791
12.8
-36
-32.8
197.8
0.17
+16
+60.8
17 885
13.6
-35
-31.0
224.0
0.19
+17
+62.6
19 030
14.5
-34
-29.2
245.0
0.22
+18
+64.4
20 396
15.4
-33
-27.4
274.0
0.24
+19
+66.2
21 641
16.3
-32
-25.6
303.4
0.26
+20
+68
23 020
17.3
0.30
+21
+69.8
24 502
18.3
0.33
+22
+71.6
26 120
19.4
0.37
+23
+73.4
27 736
20.6
+75.2
29 477
21.8
-31
-30
-29
-23.8
-22.0
-20.2
336.0
374
411
-28
-18.4
461
0.40
+24
-27
-16.8
511
0.45
+25
+77
31 219
23.0
-26
-14.3
563
0.49
+26
+78.8
33 209
24.4
-25
-13.0
623
0.55
+27
+80.6
35 200
25.8
-24
-11.2
689
0.59
+28
+82.4
37 312
27.2
-23
-9.4
759
0.66
+29
+84.2
39 551
28.7
-22
-7.3
840
0.72
+30
+86
41 791
30.3
-21
-5.8
922
0.80
+31
+87.8
44 322
32.0
0.88
+32
+89.6
46 936
33.5
0.96
+33
+91.4
49 675
35.6
1.05
+34
+93.2
52 539
37.2
1.15
+35
+95
55 472
39.6
+96.8
58 639
41.3
-20
-19
-18
-17
-4.0
-2.2
-0.4
+1.4
1 015
1 118
1 231
1 358
-16
+3.2
1 480
1.26
+36
-15
+5.0
1 630
1.38
+37
+98.6
62 001
43.8
-14
+6.8
1 779
1.51
+38
+100.4
65 487
45.8
-13
+8.8
1 953
1.65
+39
+102.2
68 973
48.4
-12
+10.4
2 140
1.79
+40
+104
71 761
50.7
-11
+12.2
2 338
1.96
+42
+107.6
81 049
56.5
-10
+14.0
2 562
2.14
+44
+111.2
89 889
62.3
-9
+15.8
2 798
2.33
+45
+113
94 527
65.3
2.54
+46
+114.8
99 600
68.7
2.76
+48
+118.4
110 681
75.5
2.99
+50
+122
120 398
82.3
+131
155 472
104.0
-8
-7
-6
+17.6
+19.4
+21.2
3 047
3 333
3 632
-5
+23.0
3 955
3.20
+55
-4
+24.8
4 303
3.51
+60
+140
196 517
129.5
-3
+26.6
4 690
3.81
+70
+158
307 212
196.5
-2
+28.4
5 100
4.13
+80
+176
467 662
290.5
-1
+30.2
5 547
4.47
+90
+194
691 542
418.0
+100
+212
1 000 980
558.0
1)
5
Reference temperature = dew point temperature.
Siemens AP 01 · 2015
5/35
© Siemens AG 2015
General information
Tables
Dew point/saturation table
Guide values for dead time (sec) per meter of sample gas line
d
4 mm
6 mm
8 mm
10 mm
12 mm
14 mm
16 mm
18 mm
20 mm
Q
30 l/h
1.5
3.4
6
9.4
13.5
18.4
24
30.5
37.6
60 l/h
0.8
1.7
3
4.7
6.8
9.2
12
15.3
18.8
90 l/h
0.5
1.1
2
3.1
4.5
6.1
8
10.2
12.5
120 l/h
0.4
0.9
1.5
2.4
3.4
4.6
6
7.6
9.4
150 l/h
0.3
0.7
1.2
1.9
2.7
3.7
4.8
6.1
7.5
180 l/h
0.3
0.6
1
1.6
2.3
3.1
4
5.1
6.3
210 l/h
0.2
0.5
0.9
1.3
1.9
2.6
3.4
4.3
5.4
240 l/h
0.2
0.5
0.8
1.2
1.7
2.3
3
3.8
4.7
270 l/h
0.2
0.4
0.7
1
1.5
2
2.7
3.4
4.2
300 l/h
0.15
0.34
0.6
0.9
1.4
1.8
2.4
3.1
3.8
d = Inner diameter of sample gas lines
Q = Flow rate
5
5/36
Siemens AP 01 · 2015
© Siemens AG 2015
General information
Tables
International standards
National standards also exist in most EU member states, and
may be used in these countries in addition to the valid EN standards. In the Federal Republic of Germany, these are the DIN
standards and the VDE regulations.
Topic
International
However, extensive harmonization has already been carried out
in the explosion protection sector, and most standards now also
exist as "DIN EN ...." versions, which have also been incorporated into the VDE regulations. DIN EN standards are identical to
the corresponding EN standards, were special national features,
e.g. concerning areas of validity etc., are formulated in a national
foreword.
Europe/Germany
USA
FM
ANSI/ISA
Ex zone
model
ANSI/ISAS12.0.01
CSA 79-0-95
ANSI/ISAS12.26. 01
CSA-E79-6
UL
Canada
Ex Class
Div. model
Ex: General
regulations
IEC 60079-0
EN 50014/
VDE 0170/0171 Part 1
Oil immersion
"o"
IEC 60079-6
EN 50015/
DIN EN 50015,
VDE 0170/0171 Part 2
Pressurized
enclosure "p"
IEC 60079-2
EN 50016/
DIN EN 50016,
VDE 0170/0171 Part 3
Powder filling
"q"
IEC 60079-5
EN 50017/
DIN EN 50017,
VDE 0170/0171 Part 4
Flameproof
enclosure "d"
IEC 60079-1
EN 50018/
DIN EN 50018,
VDE 0170/0171 Part 5
Increased
safety "e"
IEC 60079-7
EN 50019/
DIN EN 50019,
VDE 0170/0171 Part 6
Intrinsic safety
"i"
IEC 60079-11
EN 50020/
DIN EN 50020,
VDE 0170/0171 Part 7
FM 3610
UL2279, Pt.11 pr
UL 913
ANSI/ISAS12.02. 01
CSA-E79-11
CSA C22.2
No. 157
Degree of
protection "n"
IEC 60079-15
EN 50021/
DIN EN 50021,
VDE 0170/0171 Part 8
FM 3611
UL2279, Pt.15 pr ANSI/ISA CSA-E79-15
S12.12. 01
CSA C22.2
No. 213
Encapsulation
"m"
IEC 60079-18
EN 50028/
DIN EN 50028,
VDE 0170/0171 Part 9
Zone 0
IEC 60079-26
EN 50284/
DIN EN 50284,
VDE 0170/0171 Part 12
Electrical
safety
IEC 61010
EN 61010-1/
DIN EN 61010-1,
VDE 0411 Part 1
FM 3600
UL2279, Pt.6
FM 3620
FM 3615
(NFPA4 96)
CSA-E79-2
UL2279, Pt.5
ANSI/ISAS12.25. 01
CSA-E79-5
UL2279, Pt.1
UL1203
ANSI/ISAS12.22. 01
CSA-E79-1
UL2279, Pt.7
ANSI/ISAS12.16. 01
CSA-E79-7
UL2279, Pt.18 ANSI/ISAS12.23. 01
Miscellaneous
CSA TIL. E
13 A
CSA C22.2
No. 30
CSA-E79-18
ANSI/ISA82. 02.01
5
CAN/CSAC22.2 No.
1010.1
Comparison of international and European standards
Siemens AP 01 · 2015
5/37
© Siemens AG 2015
General information
Tables
International standards
European standard
German standard
German title
EN 1127
DIN EN 1127-1
Explosive atmospheres - Explosion protection - Part 1: Fundamentals and method
EN 50039
DIN EN 50039,
VDE 0170/0171 Part 10
Electrical equipment for hazardous areas; intrinsically-safe electrical systems "i"
EN 13463-1
DIN EN 13 463-1
Non-electrical equipment for use in hazardous areas, Part 1: Fundamental method and
requirements
EN 50281-1-1
DIN EN 50281-1-1,
VDE 0170/0171 Part 15-1-1
Electrical equipment for use in areas with combustible dust,
Part 1-1: Electrical equipment with protection by enclosure
EN 60079-10
DIN EN 60079-10,
VDE 165 Part 101
Electrical equipment for potentially explosive gas atmospheres,
Part 10: Division of potentially explosive areas
EN 60079-14
DIN EN 60079-14,
VDE 165 Part 1
Electrical equipment for hazardous areas, Part 14: Electrical installations in potentially
explosive areas (except underground excavation)
EN 60079-17
DIN EN 60079-17,
VDE 0165 Part 10
Electrical equipment for potentially explosive gas atmospheres, Part 17: Testing and maintenance of electrical installations in hazardous areas (except underground excavation)
EN 60950
DIN EN 60950,
VDE 0805
Safety of information technology equipment, including electrical office machines
Harmonized European standards for explosion protection
T 1 > 450 °C
5
T 2 > 300 °C
T 3 > 200 °C
T 4 > 135 °C
Acetone
Ethane
Ethyl acetate
Ammonia
Benzene (pure)
Acetic acid
Carbon monoxide
Methane
Methanol
Propane
Toluene
Ethyl alcohol
i-amyl acetate
n-butane
n-butyl alcohol
Petrol
Diesel fuel
Aviation gasoline
Fuel oil
n-hexane
Acetyl aldehyde
Ethyl ether
II B
Town gas
(Illuminating
gas)
Ethylene
II C
Hydrogen
Acetylene
I
Methane
II A
Classification of gases and vapors into explosion groups and temperature classes
5/38
Siemens AP 01 · 2015
T 5 > 100 °C
T 6 > 85 °C
Carbon disulfide
© Siemens AG 2015
General information
Definitions
■ Overview
Definitions
Units of measurement
Calibration gas
Vol%
Gas used for adjusting the sensitivity (deflection) of the detected
gas. It is a gas mixture of known composition (measured component and suitable residual gas).
Volume proportion in % of measured component, based on the
sample gas.
Sensitivity
Ratio between a change in output variable observed on the measuring instrument and the change in input variable required for
this.
Linearity error of devices with linear characteristics
Deviation of measured characteristic from a linear reference
characteristic.
The linearity is an important variable particularly for instruments
which use a measuring effect with nonlinear characteristic and
where the measured characteristic is linearized electronically.
Cross-sensitivity
Measure for the selectivity of a gas analyzer with regard to interfering components.
It is the ratio between the displayed value of the interfering component and the displayed value of the measured component;
both have the same concentration.
In the case of analyzers where the total concentration of different
materials is measured (e.g. total hydrocarbon concentration)
and where the individual components are weighted differently in
the measuring result, these factors are specified in equivalents
of a master component (e.g. CH4 equivalents for the total hydrocarbon measurement) and not as cross-sensitivity.
ppm (vpm)
Parts per million, i.e. one proportion of the measured component
per 106 proportions of the sample gas (corresponds to 10-4 %).
In gas analysis technology, ppm is usually understood as volume concentrations. The dimension unit vpm is frequently used
for unequivocal identification:
1 vpm = 1 cm³ / m³
Example: 1 000 vpm = 0.1 vol.% = 1 dm³ / m³
mg/m³
Mass of measured component in mg referred to 1 m³ of sample
gas at 1 013 hPa and 20 °C.
Example: 1 vpm = 1 cm³ / m³ corresponds to:
(molecular weight of component / molecular volume of component) ⋅ (mg / m³)
Weight concentration
Specification of measured values in weight concentrations is not
common with gas analysis. Weight concentrations can only be
determined in exceptional cases. The dimension unit mg/m³
does not mean weight concentration.
Dynamic response
5
The dynamic response of an analyzer is characterized by its response time and dead time. The response time is the time which
passes until the output variable remains constantly within defined limits following an abrupt change in the input variable. The
response time is usually understood as the time required to
reach 90 (T90) or 95 % of the expected display.
Siemens AP 01 · 2015
5/39
© Siemens AG 2015
General information
Notes
5
5/40
Siemens AP 01 · 2015