OXYMAT 64 Catalog Specification Sheet

© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
1
General information
■ Overview
■ Design
• 19" rack unit with 4 HU for installation
- in hinged frames
- in cabinets with or without telescopic rails
• Front plate for service purposes can be pivoted down
(laptop connection)
• Connections for sample gas
- Input: Clamping ring connection for a pipe diameter of 6 mm
or ¼"
- Output: Pipe connection with diameter 6 mm or ¼"
• High-pressure and low-pressure versions
• Catalytically active and inactive cell
The OXYMAT 64 gas analyzer is used for the trace measurement
of oxygen.
■ Benefits
•
•
•
•
High linearity
Compact design
Open interface architecture (RS 485, RS 232, PROFIBUS)
SIPROM GA network for maintenance and service information
(option)
■ Application
• Production of technical gases
- Measurements in N2 and CO2
• Welding
- Measurements in protective gases during welding of highly
alloyed steels, titanium, etc.
• Systems for air separation
- Measurements in N2 and in inert gases (e.g. Ne, Ar)
- Measurements in CO2
• Food production
- Measurement in CO2 (e.g. breweries)
• Electronics industry
- Low-pressure version with pump
• Flow soldering systems
Display and control panel
• Large LCD field for simultaneous display of
- Measured value
- Status bar
- Measuring ranges
• Contrast of the LCD field adjustable via the menu
• Permanent LED backlighting
• Washable membrane keyboard with five softkeys
• Five-digit measured-value display
(decimal point counts as one digit)
• Menu-driven operation for parameterization, configuration,
test functions, adjustment
• Operator support in plain text
• Graphical display of the concentration progression; time intervals parameterizable
• Bilingual operating software German/English,
English/Spanish, French/English, Spanish/English,
Italian/English
• Switchover from ppm measuring range to % measuring range
Inputs and outputs
• One analog output per medium (from 0, 2, 4 to 20 mA; NAMUR
parameterizable)
• Six binary inputs freely configurable (e.g. for measurement
range switchover, processing of external signals from sample
preparation)
• Six relay outputs freely configurable (failure, maintenance request, maintenance switch, threshold alarm, external solenoid
valves)
• Two analog inputs configurable (e.g. correction of cross-interference, external pressure sensor)
• Extension with eight additional binary inputs and eight additional relay outputs, e.g. for autocalibration with up to four calibration gases
Communication
RS 485 present in basic unit (connection from the rear).
Options
• RS 485/RS 232 converter
• RS 485/Ethernet converter
• RS 485/USB converter
• Connection to networks via PROFIBUS DP/PA interface
• SIPROM GA software as the service and maintenance tool
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© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
General information
LED backlit graphic
display and
membrane keyboard
with noticeable click
Status line to display
the analyzer status
(programmable)
Two code levels
according to NAMUR
(maintenance and
specialist level)
Easy operation
menu controlusing
the softkeys
Display of
concentrations as
numbers and bargraph
Display of current
measuring ranges
Display of
start-of-scale and
full-scale values
ESC key
to abort inputs
Keyboard to
enter values
INFO key
for help in plain text
CLEAR key
to delete inputs
ENTER key
to accept
input values
MEAS key
to return to
measurement mode
OXYMAT 64, membrane keyboard and graphic display
Designs – Parts wetted by sample gas, standard
Gas path
19" rack unit
Sample gas path
Bushing
Pipe inlet
O2 sensor
Bypass line
Connection pieces
Stainless steel, mat. no. 1.4571
Stainless steel
ZrO2 ceramic
FPM (Viton)
PTFE (Teflon)
Pressure sensor
Enclosure
Membrane
Sensor adapter
Bypass restrictor
Polycarbonate
SiO4
Aluminum
Stainless steel, mat. no. 1.4571
Flow indicator
Measurement pipe
Variable area
Suspension boundary
Angle pieces
Duran glass
Duran glass, black
PTFE (Teflon)
FKM (Viton)
Pressure switch
Enclosure
Membrane
Polycarbonate
NBR
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© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
1
General information
Gas path (high-pressure version)
Legend for the gas path figure
1
Sample gas inlet; inlet pressure
5
Pressure sensor
- without internal pressure regulator: 2 000 hPa (abs.), regulated 6
- with internal pressure regulator: 2 000 ... 6 000 hPa (abs.)
2
Sample gas outlet; sample gas flows off free of dynamic pressure
Bypass restrictor
7
Pressure switch
8
Flow measuring tube
3
Pressure regulator (order version)
9
Purging gas connection
4
O2 sensor
10
Restrictor
9
1
2
3
10
10
5
4
O2 sensor
(KAZ /KIZ)
P
7
6
F
8
Gas path OXYMAT 64, high-pressure version
The sample gas pressure (2 000 to 6 000 hPa) is regulated by the pressure regulator (3) at approx. 2 000 hPa or is provided by the
operator with 2 000 hPa. This pressure is applied at the restrictor (10). The restrictor (10) reduces the pressure such that a sample
gas flow of 15 to 30 l/h is created. This flow is subdivided via the sample gas restrictor (11) and the adjustable bypass restrictor (6)
such that there is a sample gas flow of 7.5 l/h through the sensor.
If the sample gas can flow off into the atmosphere unhampered, the sample gas pressure corresponds to the atmospheric pressure.
If the sample gas flows off via an exhaust gas line, it works like a flow resistance. If the resulting dynamic pressure exceeds 100 hPa
(rel.), a maintenance request is output.
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Continuous Gas Analyzers, extractive
OXYMAT 64
General information
Gas path (low pressure)
Legend for the gas path figure
1
Sample gas inlet; flow 125 ml/min (7.5 l/h)
5
2
Sample gas outlet; sample gas flows off free of dynamic pressure
6
Flow measuring tube
3
O2 sensor
7
Purging gas connection
4
Pressure sensor
8
Restrictor
7
1
Pressure switch
2
8
3
O2 sensor
(KAZ /KIZ)
4
P
5
F
6
Gas path OXYMAT 64, low-pressure version
With the low-pressure version, the sample gas flow must be set externally to 125 ml/min. With a built-in pressure switch, the sample
gas pressure is approx. 30 hPa above the current atmospheric pressure since the sample gas flows off via a restrictor. If the resulting
dynamic pressure exceeds 100 hPa (rel.), a maintenance request is output. In order to reduce the 90 % time, we recommend installation of a bypass upstream of the gas inlet which then provides a faster exchange of gas. This is particularly important with long
sample gas lines between the gas sampling point and the analyzer. Please make absolutely sure that the flow in the OXYMAT 64
does not exceed 125 ml/min.
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© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
General information
Gas path (low pressure with integrated sample gas pump)
Legend for the gas path figure
1
Sample gas inlet
6
Flow measuring tube
2
Sample gas outlet; sample gas flows off free of dynamic
pressure
7
Sample gas pump
3
O2 sensor
8
Restrictor
4
Pressure sensor
9
Purging gas connection
5
Needle valve
1
9
2
7
O2 sensor
CIZ/CAZ
5
Oxygen sensor module, complete
1
3
Δp
8
4
6
F
Low-pressure version with integral sample gas pump
The device version "OXYMAT 64 low-pressure with pump" is equipped with a sample gas pump which automatically provides a constant sample gas flow of 125 ml/min through the sensor. By means of an internal bypass, the total flow of sample gas through the
analyzer is increased to approx. 0.4 l/min. This measure significantly improves the analyzer’s response time.
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Continuous Gas Analyzers, extractive
OXYMAT 64
General information
■ Function
The measuring cell consists of a cylindrical (pipe-shaped) ZrO2
membrane. The sample gas (low O2 content) flows at a constant
rate through the inside of the membrane, which is regulated at
650 °C. The exterior of the sensor is exposed to the ambient air
(approx. 21 % O2).
Both sides of the ZrO2 membrane are coated with thin platinum
films that act as electrodes. This forms a solid, electrochemical
cell. The amount of oxygen atoms ionized depends on the oxygen concentration at the electrodes.
Measuring effect
U = UA + RT/4F (In [O2,air] - In [O2] (equation 1)
U measuring effect
UA asymmetric voltage (voltage, at [O2] = [O2,air]
T ceramic temperature
[O2,air] O2 concentration in the air
[O2] O2 concentration in sample gas
Note
The differences in concentration at each side means that a differential partial pressure prevails. Since ZrO2 conducts ions at
650 °C, ionic migration takes place in the direction of the lower
partial pressure.
The sample gas must be fed into the analyzer free of dust. Condensation should be avoided. Therefore, gas modified for the
measuring tasks is necessary in most application cases.
An oxygen gradient arises across the width of the ZrO2 membrane, which, according to equation (1), results in an electrical
potential difference between the platinum electrodes.
Calibration of the calibration point is carried out as with the other
analyzers of Series 6 after a maximum of 14 days by connecting
the calibration gas O2 in residual N2 at concentrations of approx.
60 to 90 % of the master measuring range.
Defects in the crystal lattice, caused by contamination of the
ZrO2 material with Y2O3 and/or CaO (introduced originally to
prevent cracks forming in ceramic material) make it easier for O2
ions to diffuse in the ZrO2 grid.
Catalytically active ZrO2 sensor (CAZ)
The electrode material is made of platinum (Pt). This type of sensor has a higher cross-sensitivity when flammable accompanying gas components are present.
Catalytically inactive ZrO2 sensor (CIZ)
The catalytically inactive sensor has the same general design as
the CAZ. The contacts and electrode surface inside the pipe are
made of a specially developed material which largely prevents
catalytic oxidation except of H2, CO and CH4.
1
2
3
4
5
6
7
Pipe made of ZrO2 and Y2O3 or
ceramic CaO-mixed oxide
Ceramic protective coating
Sample electrode (Pt)
Reference electrode (Pt)
Thermoelement
Contact to reference electrode
Contact to sample electrode
Calibration
Contrary to the other analyzers of Series 6, the zero point calibration cannot be carried out using pure nitrogen, but with a "small"
concentration of oxygen in nitrogen appropriate to the selected
measuring range (e.g.: measuring range 0 to 10 vpm; calibration
gas approx. 2 ppm O2 in residual N2).
Essential characteristics
• Four measurement ranges freely parameterizable, all measurement ranges linear
• Galvanically isolated measurement value output 0/2/4 through
20 mA (also inverted) and as per NAMUR
• Autoranging selectable; possibility of remote switching
• Storage of measured values possible during adjustments
• Wide range of selectable time constants (static/dynamic noise
suppression); i.e. the response time of the device can be
adapted to the respective measuring task
• Easy handling thanks to menu-driven operation
• Low long-term drift
• Two control levels with their own authorization codes for the
prevention of accidental and unauthorized operator interventions
• Automatic, parameterizable measuring range calibration
• Operation based on the NAMUR recommendation
• Monitoring of the sample gas (via pressure switch)
• Customer-specific analyzer options such as:
- Customer acceptance
- TAG labels
- Drift recording
• Simple handling using a numerical membrane keyboard and
operator prompting
• Smallest span 0 to 10 vpm O2
• Largest span 0 to 100 % (testing with ambient air)
• Internal pressure sensor for correction of the influence of sample gas pressure fluctuations
OXYMAT 64, principle of operation
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© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
1
General information
Influence of interfering gas
Catalytically active sensor (CAZ)
Very large cross-interference of all combustible accompanying
gases. Thus not suitable for use with combustible accompanying gases!
Catalytically inactive sensor (CIZ)
There is only a slight cross-interference in the case of accompanying gases with a concentration in the range of the O2 concentration. H2, CO and CH4 still have a noticeable effect in the case
of flammable accompanying gas components.
Measured component / interfering gas Diagonal gas offset
78 vpm O2/140 vpm CO
-6.1 vpm
10 vpm O2/10 vpm CO
-0.6 vpm
74 vpm O2 / 25 vpm CH4
-0.3 vpm
25 vpm O2 / 357 vpm CH4
-1.1 vpm
25 vpm O2 / 70 vpm H2
-3 vpm
5 vpm O2 / 9.6 vpm H2
-0.55 vpm
170 vpm O2 / 930 vpm C2H4
-118 vpm
Examples of typical diagonal gas offsets on a catalytically inactive sensor
The listed deviations depend on the exemplar and can deviate
up to ± 0.2 vpm. The actual deviation must be determined individually or the error will be eliminated through a corresponding
calibration measure (displacement of the diagonal gas offset).
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Continuous Gas Analyzers, extractive
OXYMAT 64
19" rack unit
■ Technical specifications
General
Measurement ranges
4, internally and externally switchable; automatic measuring range
switchover also possible
Smallest possible span (relating to 0 ... 10 vpm O2
sample gas pressure 1 000 hPa
absolute, 0.5 l/min sample gas flow,
and 25 °C ambient temperature)
Largest possible measuring span
0 ... 100 %
Operating position
Front wall vertical
Conformity
CE mark in accordance with
EN 50081-1, EN 50082-2 and
RoHS
Design, enclosure
Measuring response (referred to sample gas pressure 1 013 hPa
absolute, sample gas flow 7.5 l/min, and ambient temperature 25 °C)
Output signal fluctuation
< ± 1 % of the smallest possible
measuring range according to rating plate, with electronic damping
constant of 1 s
Zero point drift
< ± 1 % of the current span/month
Measured-value drift
< ± 1 % of the current span/month
Repeatability
< 3 % of the current measuring span
Detection limit
1 % of current measuring range,
< 0.1 vpm in measuring range
0 ... 10 vpm
Linearity error
< 2 % of the current measuring span
Degree of protection
IP20 according to EN 60529
Influencing variables (relating to sample gas pressure 1 013 hPa
absolute, 7.5 l/min sample gas flow and 25 °C ambient temperature)
Weight
Approx. 11 kg
Ambient temperature
Electrical characteristics
EMC
(Electromagnetic Compatibility)
In accordance with standard
requirements of NAMUR NE21
(08/98) and EN 61326
Electrical safety
In accordance with EN 61010-1,
overvoltage category II
Power supply
100 ... 120 V AC (nominal range of
use 90 ... 132 V), 48 ... 63 Hz or
200 ... 240 V AC (nominal range of
use 180 ... 264 V), 48 ... 63 Hz
Power consumption
Approx. 37 VA
Fuse values
100 ... 120 V: 1.0T/250
200 ... 240 V: 0.63T/250
Gas inlet conditions
Sample gas flow
• through the sensor
7.5 l/h
• Overall consumption
15 ... 30 l/h
Permissible sample gas pressure
• without internal pressure regulator 2 000 hPa (abs.)
< 2 %/10 K referred to current
measuring span
Sample gas pressure only possible • When pressure compensation
has been switched off: < 1 % of
if the sample gas can flow out into
current span/1 % pressure
the ambient air
change
• When pressure compensation
has been switched on: < 0.2 % of
current span/1 % pressure
change
Residual gases, deviation from zero
point
• Catalytically active sensor (CAZ)
Only gases with non-combustible
residual gas components can be
introduced
• Catalytically inactive sensor (CIZ) Residual gas concentration of
10 vpm H2; CO and CH4 have a
lower cross-interference; higher
HCs are negligible
Sample gas flow
< 2 % of the smallest possible
span with a change in flow of
10 ml/min
Power supply
< 0.1 % of the current measuring
range with rated voltage ± 10 %
• with internal pressure regulator
2 000 ... 6 000 hPa (abs.)
Electrical inputs and outputs
Sample gas temperature
Min. 0 ... max. 50 °C, but above
the dew point
Analog output
Sample gas humidity
< 1 % relative humidity
0/2/4 ... 20 mA, 4 … 20 mA
(NAMUR), isolated; max. load
750 Ω
Relay outputs
6, with changeover contacts, freely
parameterizable, e.g. for measuring range identification;
load: 24 V AC/DC/1 A, isolated
Analog inputs
2, dimensioned for 0/2/4 … 20 mA
for external pressure sensor and
correction of influence of residual
gas (correction of cross-interference)
Binary inputs
6, designed for 24 V, isolated,
freely parameterizable, e.g. for
measurement range switchover
Serial interface
RS 485
Options
AUTOCAL function each with 8
additional binary inputs and relay
outputs, also with PROFIBUS PA or
PROFIBUS DP
Dynamic response
Warm-up period
At room temperature < 30 min (the
technical specification will be met
after 2 hours)
Damping (electrical time constant)
0 ... 100 s, parameterizable
Dead time (high-pressure version) 10 ... 30 s
(purging time of the gas path in the
unit at 125 ml/min)
Dead time (low-pressure version
without pump)
<5s
Dead time (low-pressure version
with pump)
< 10 s
Time for device-internal signal
processing
<1s
Pressure correction range
Pressure sensor internal
800 ... 1 100 hPa (abs.)
Climatic conditions
Permissible ambient temperature
-40 ... +70 °C during storage and
transportation, 5 … 45 °C during
operation
Permissible humidity
< 90 % relative humidity as annual
average, during storage and transportation (must not fall below dew
point)
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Continuous Gas Analyzers, extractive
OXYMAT 64
1
19" rack unit
Selection and ordering data
Article No.
OXYMAT 64 gas analyzer
19" rack unit for installation in cabinets
7MB2041- 7 7 7 1 7 - 7 A 7 7
Cannot be combined
Click on the Article No. for the online configuration in the PIA Life Cycle Portal.
Sensor
ZrO2: Catalytically active cell (CAC)
ZrO2: Catalytically inactive cell (CIC)
0
1
ZrO2: Catalytically active cell (CAC); with differential pressure sensor
ZrO2: Catalytically inactive cell (CIC); with differential pressure sensor
3
0
1
2
2
3
Sample gas pressure
High pressure, without pressure regulator
High pressure, with pressure regulator
2 000 hPa (abs.)
2 000 ... 6 000 hPa (abs.)
A
B
Low pressure, with pump
Low pressure, without suction pump
Atmosphere
Atmosphere
D
A
B
C
C
D
Gas connection
Input
Output
Clamping ring connection 6 mm
Fittings 6 mm
A
Input
Output
Clamping ring connection ¼"
Fitting ¼"
B
Add-on electronics
Without
AUTOCAL function
• With 8 additional digital inputs/outputs
• With 8 additional digital inputs/outputs and PROFIBUS PA interface
• With 8 additional digital inputs/outputs and PROFIBUS DP interface
0
1
6
7
Power supply
100 to 120 V AC, 48 to 63 Hz
0
200 to 240 V AC, 48 to 63 Hz
1
Explosion protection
A
Without
Language
German
English
French
Spanish
Italian
0
1
2
3
4
Additional versions
Order code
Add "-Z" to Article No. and specify Order code
Telescopic rails (2 units)
A31
TAG labels (specific lettering based on customer information)
B03
Clean for O2 service (specially cleaned gas path)
Y02
Measuring range indication in plain text, if different from the standard setting
Y11
Special setting
(only in conjunction with an application no., e.g. extended measuring range)
Y12
Extended special setting
(only in conjunction with an application no., e.g. determination of cross-interferences)
Y13
Accessories
Article No.
RS 485/Ethernet converter
A5E00852383
RS 485/RS 232 converter
C79451-Z1589-U1
RS 485/USB converter
A5E00852382
AUTOCAL function each with 8 digital inputs/outputs
C79451-A3480-D511
AUTOCAL function 8 digital inputs/outputs each and PROFIBUS PA
A5E00057307
AUTOCAL function 8 digital inputs/outputs each and PROFIBUS DP
A5E00057312
Set of Torx screwdrivers
A5E34821625
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© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
19" rack unit
■ Dimensional drawings
384.5
351.5
27.5
15.6
4
128
173
82
149.5
172
37.7
101.6
177
s
M4
86.5
2;<0$7
465
483
132
411.5
104
320
345
36
0
440
OXYMAT 64, 19" rack unit, size in mm
Siemens AP 01 · 2015
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© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
1
19" rack unit
■ Schematics
Pin assignment (electrical connections)
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0
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9
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OXYMAT 64, 19" rack unit, pin assignment
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Siemens AP 01 · 2015
1RWH
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© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
19" rack unit
Connector SUB-D 37F (option)
M
37
19
18
36
17
35
16
34
15
33
14
32
GND
NC
NC
Binary input 14-P
Binary input 13-P
Binary input 12-P
Binary input 11-P
Binary input 10-P
Binary input 9-P
Binary input 8-P
Binary input 7-P
Binary input 7 to 14-N
Isolated
via optocoupler
"0" = 0 V (0 ... 4.5 V)
"1" = 24 V (13 ... 33 V)
13
31
Relay 14
12
30
11
Relay 13
29
10
28
Relay 12
9
27
8
Relay 11
Contact load
max. 24 V/1 A, AD/DC
Relay 10
for shown
relay contact position,
the relay has zero current
26
7
25
6
24
5
Relay 9
23
4
22
Relay 8
3
21
20
M
Connector SUB-D 9F-X90
PROFIBUS DP
5
9
4
8
3
2
Relay 7
1
GND
Optional
Connector SUB-D 9M-X90
PROFIBUS PA
DGND
CNTR-N
CNTR-P/direction control
RxD/TxD-N (A)
RxD/TxD-P (B)
7
5
9
4
8
3
PA-N(-)
PA-P(+)
7
2
6
2
VP /+ 5 V
1
6
1
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OXYMAT 64, 19" rack unit, pin assignment of the AUTOCAL plate and PROFIBUS plug
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© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
1
19" rack unit
Gas connections and pin assignment
Sample gas outlet
Sample gas inlet
2
15-pin connector:
Binary inputs and
analog inputs/outputs
1
9-pin
connector:
RS 485
Purge gas
inlet
9-pin
interface
connector
(Optional):
e.g.
PROFIBUS
Mains connection
and miniature
fuses
Gas connections
Sample gas inlet: Clamping ring connection 6 mm or ¼"
Sample gas outlet: Fittings 6 mm or ¼"
OXYMAT 64, 19" rack unit, gas connections and electrical connections
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Siemens AP 01 · 2015
25-pin connector:
Binary inputs and
relay outputs
37-pin connector:
Binary inputs and
relay outputs (optional)
© Siemens AG 2015
Continuous Gas Analyzers, extractive
OXYMAT 64
Documentation
■ Selection and ordering data
Operating instructions
Article No.
OXYMAT 64
Gas analyzer for measuring trace
oxygen
• German
A5E00880382
• English
A5E00880383
• French
A5E00880384
• Spanish
A5E00880385
• Italian
A5E00880386
Gas analyzers of Series 6 and
ULTRAMAT 23
Schnittstelle/Interface
PROFIBUS DP/PA
• German and English
A5E00054148
Suggestions for spare parts
■ Selection and ordering data
Description
7MB2041
2 years
(quantity)
5 years
(quantity)
Article No.
Pressure regulator as spare part
x
–
1
A5E01008972
Flowmeter
x
–
1
A5E01061561
Adapter plate, LC display/keypad
x
1
1
C79451-A3474-B605
LC display
x
–
1
W75025-B5001-B1
Connector filter
x
–
1
W75041-E5602-K2
Fuse, T 0.63 A, line voltage 200 … 240 V
x
2
4
W79054-L1010-T630
Fuse, T 1 A, line voltage 100 … 120 V
x
2
4
W79054-L1011-T100
Siemens AP 01 · 2015
1/177
1