SITRANS DA400 Acoustic Sensor Catalog

© Siemens AG 2016
Process Protection
Acoustic sensors for pump monitoring
SITRANS DA400 acoustic diagnostic unit
■ Overview
■ Application
In the version for pump monitoring, the SITRANS DA400 allows
continuous, simultaneous and independent monitoring of up to
four flow control valves in a pump for leaks. In addition, another
four inputs are available for monitoring standard signals (e.g. diaphragm and temperature monitoring). This means that the condition of an oscillating displacement pump is monitored in every
phase of its operation.
The SITRANS DA400 is used in all industries where an oscillating
displacement pump is used.
The version for material flow monitoring monitors the material
flow in liquids or gases that is usually as a result of impact or friction, e.g. against the pipe or channel wall.
If the acoustic diagnostic unit is used in potentially explosive areas, the sensors as well as the acoustic diagnostic unit can be
installed in the Ex-zone.
The SITRANS DA400 acoustic diagnostic unit acoustically measures the structure-borne noise
• In the version for pump monitoring; on oscillating
displacement pumps
• In the version for material flow monitoring; on pipes, conveying
equipment or channels.
It comprises an electric diagnostic unit and up to four acoustic
sensors.
■ Benefits
Benefits when pump monitoring
• Increased availability of the system through:
- Advanced maintenance planning thanks to early recognition
of defective components
- Reduced downtimes (no fault locating necessary)
- Increased maintenance intervals
- Greater pump reliability
• Prevention of expensive consequential damage
• Increased safety of critical applications
• Early recognition of a reduction in power
• Increased productivity
Benefits when material flow monitoring
• Detection of insufficient or excessive inflow of material in a
liquid or gas flow
• Detection of blockages or clogging
• Reduction of down times
• Increased product quality
• Increased availability
• Guaranteed operational safety
• Increased productivity
If using the unit in potentially explosive areas, you have two
options:
• Operation of the sensors over the safety barriers or
• Operation of the sensors over the SITRANS DA400 with
explosion protection
■ Function
Product features
Continuous and independent status monitoring:
• Of the flow control valves, for leaks
• Of the membranes, for material fatigue
• Of the temperature loading of the hydraulic oil
• Of flowing bulk solids in pipes, conveying equipment or
channels
Communication of the status to superordinate control systems:
• Via digital outputs
• Digitally, via PROFIBUS DP or PROFIBUS PA
Simple to operate and parameterize:
• Locally, via digital display and keys
• PROFIBUS DP and PROFIBUS PA
Mode of operation
Principle of measurement
Leaks in the flow control valves of oscillating displacement
pumps are flows in which cavitation occurs. This results in sound
waves that are transmitted to the valve housing, where they are
recorded by the structure-borne sound sensor in the
SITRANS DA400 on the outside.
The SITRANS DA400 utilizes the fact that with both an open
valve and a closed intact valve, no cavitation occurs and the
measured sound level thus corresponds to the operating noise
of the pump. By contrast, with a closed defective valve cavitation
does occur, which can be identified by a period increase in the
sound level (see figures). The measured value from the
SITRANS DA400 corresponds exactly to this increase in the
sound level.
In the version for material flow monitoring, SITRANS DA400 continuously detects high-frequency acoustic oscillations by means
of structure-born noise sensors.
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© Siemens AG 2016
Process Protection
Acoustic sensors for pump monitoring
SITRANS DA400 acoustic diagnostic unit
These oscillations are created by:
• Friction and impact of bulk solids in:
- pipes, raceways or channels
- chutes
- conveyors
• Friction and impact of mechanical parts
• Bursting of bubbles
• Cavitation
• Turbulence in gas and liquid flows
The following shows an example of signal levels at an oscillating
displacement pump
■ Technical specifications
SITRANS DA400
Without
Ex protection
With
Ex protection
Input
Acoustic channels
4
• Cycle time
10 ms
Only for connection to intrinsically
safe sensors with:
• Max. voltage Uo
-
 5.5 V
• Max. current Io
-
 70 mA
• Max. power Po
-
 100 mW
• Internal capacitance Ci
-
 1.2 F
• Internal inductance Li
-
Universal inputs
Negligible
4
• Cycle time
80 ms
• Low pass filter time
1s
Universal analog current input
• Load
< 105 
• Resolution
Signal from structure-borne sound sensor with intact valve
• Accuracy
• Fault signal
0.5 %
> 21 mA or < 3.6 mA (at 4 ... 20 mA)
• Alarm monitoring hysteresis
• Static destruction limit
6
< 12 
0.1 %
0.5 %
40 mA, 4 V
-
• Max. supply voltage Ui
-
 30 V
• Max. short-circuit current Ii
-
 100 mA
• Max. power Poi
-
1W
• Internal capacitance Ci
-
 11 nF
• Internal inductance Li
-
 70 H
For connection with approved intrinsically safe circuits with:
Signal from structure-borne sound sensor with defective valve
Universal input 24 V digital signal
Sensor operation
• Input resistance
> 19 k
The structure-borne sound sensor works on the piezoelectric
principle. The structure-borne sound is injected into the sensor
via the sensor base (mounting surface) and inside it is converted
into an electrical voltage by a piezo-ceramic element. This is amplified in the sensor and transmitted via the cable.
• Signal level Low
< 4.5 V or open
• Signal level High
>7V
The sensor frequency range lies in the ultrasonic range
(> 20 kHz). The sensor is non-directional, i.e. the angle at which
the sound wave impacts on the sensor base is not important.
Mode of operation of the safety barrier
The safety barrier comprises intrinsically-safe circuits. These circuits serve to operate intrinsically-safe components such as
sensors and to isolate safety from the non-hazardous area with
the SITRANS DA400 diagnostic unit.
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Siemens FI 01 · 2016
• Hysteresis
• Static destruction limit
>1V
± 40 V
-
• Max. supply voltage Ui
-
 30 V
• Max. short-circuit current Ii
-
 100 mA
• Max. power Poi
-
1W
• Internal capacitance Ci
-
 11 nF
• Internal inductance Li
-
 70 H
For connection with approved intrinsically safe circuits with:
© Siemens AG 2016
Process Protection
Acoustic sensors for pump monitoring
SITRANS DA400 acoustic diagnostic unit
SITRANS DA400
Without
Ex protection
With
Ex protection
SITRANS DA400
Universal input closing contact
Electromagnetic Compatibility
For connection to closing contact with
the maximum values:
• Emitted interference and interference immunity
• Max. voltage Uo
-
 10 V
Usage limits for water
• Max. current Io
-
 1 mA
• Delivery side
• Max. power Po
-
 5 mW
• Number of strokes
• Internal capacitance Ci
-
 11 nF
Design
• Internal inductance Li
-
 70 H
Weight (without options)
8.2 V source for NAMUR signal
(DIN EN 60947-5-6)
Without
Ex protection
To EN 61326 and NAMUR NE 21
 10 bar a
Min. 4 min-1, max. 10 ... 500 min-1
Approx. 2.5 kg
Dimensions (W x H x D) in mm (inch)
Enclosure material
• Open circuit voltage
8.2 V ± 0.3 V,
short-circuit proof
• Input resistance
< 950 
-
• Static destruction limit for incorrect
wiring
+20 V/-10 V
-
Digital outputs
6
6 (applicable for
NAMUR switch
hardener)
• Semiconductor relay
Individually
isolated, short
circuit-proof
-
Output
With
Ex protection
172 x 320 x 80 (6.8 x 12.6 x 3.2)
Macrolon (polyMakrolon
carbonate + 20 % (polycarbonate
glass fiber)
+ 20 % glass
fibers), surface
attenuated with
CrNi layer and
painted
Electrical connection via screw termi- • Rigid 2.5 mm (0.984 inch)
• Flexible 1.5 mm (0.59 inch)
nals
• Flexible with connector sleeves
1.5 mm (0.59 inch)
Cable inlet via plastic cable joints
• 2 x Pg 13.5
• 5 x Pg 11
Power supply
24 V AC/36 V DC, any polarity
Rated voltage
24 V DC
16 V DC
Operating range
19 ... 36 V DC
15 ... 17 V DC
• Destruction limit
35 V AC, 50 V DC -
Current consumption
< 100 mA
< 40 mA
• Max. switching current
100 mA
-
• Signal status Low (no response)
-
 1.2 mA (source
to DIN 19234)
For connection with approved intrinsically safe circuits with:
-
 17.4 V
-
 2.1 mA (source
to DIN 19234)
• Max. supply voltage Ui
• Signal status High (response)
• Max. short-circuit current Ii
-
 191 mA
• Max. power Poi
-
 1.35 W
• Internal capacitance Ci
-
 33 nF
• Internal inductance Li
-
 28 H
• Switching voltage
For connection with an intrinsically
safe switching amplifier to DIN 19234
with:
6
• Max. supply voltage Ui
-
 15.5 V
• Max. short-circuit current Ii
-
 25 mA
• Max. power Poi
-
 64 mW
Explosion protection to EN 50014,
EN 50020 and EN 50021
• Internal capacitance Ci
-
 5.2 nF
Intrinsic safety "i"
-
• Internal inductance Li
-
Negligible
TÜV (German
Technical Inspectorate) 06 ATEX
2952
Marking
-
II 2(1) G EEx is
[ia] IIC T6
-
Certificates and approvals
Conditions of use
Installation conditions
Vertical wall mounting, cables fed in
from below
Climatic class
Class 4K4 according to EN 60721-3-4
Communication
Mounting location
-
Zone 1 or zone 2
PROFIBUS DP
Permissible ambient temperature
-20 ... +60 °C
(-4 ... +140 °F)
-
RS 485, switchable terminating
resistor
Protocol
Cyclic with Master C1 and acyclic
with Master C2
• Temperature class T5 – T1
-20 ... +60 °C
(-4 ... +140 °F)
• Temperature class T6
-20 ... +50 °C
(-4 ... +122 °F)
Mechanical load
Degree of protection to EN 60529
Class 4M3 according to
EN 60721-3-4
Power supply
-
Bus-supplied
Bus voltage
-
9 ... 24 V
Current consumption
-
10.5 mA ± 10 %
IP65
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© Siemens AG 2016
Process Protection
Acoustic sensors for pump monitoring
SITRANS DA400 acoustic diagnostic unit
SITRANS DA400
Without
Ex protection
With
Ex protection
Bus connection with FISCO supply
unit, ia/ib group IIC or IIB
-
Yes
Layer 1 and 2 from PROFIBUS PA,
transfer technology from IEC 1158-2
-
• C2 connections
-
4 connections are
supported in master class 2
Ex barriers for sensors
Application area
For the intrinsically safe supply of the
acoustic sensors in zone 1; the safety
barriers must be installed between
the SITRANS DA400 acoustic diagnostic unit and the sensor if only the
sensors are being operated in the Ex
zone.
Input
A maximum of two sensors can be
connected.
• Device profile
-
PROFIBUS PA
Profil V3.0 Rev. 1,
Class B
Conditions of use
Degree of protection to EN 60529
IP20
• Device address
-
1 ... 126
(126 factory-set)
Permissible Ambient Temperature
-20 ... +60 °C (-4 ... +140 °F)
PC parameterization software
SIMATIC PDM (not included in the
scope of delivery)
Sensor for SITRANS DA400
Design
Weight
115 g (0.254 lb)
Housing material
Plastic, polyamide
Type of installation
Installation on mounting rail NS 32 or
NS 35/7.5.
• Piezoceramic sensor with pre-amplifier
Setup
The acoustic diagnostic unit
SITRANS DA400 and the safety barrier must be operated outside the Ex
zone.
• Encapsulated electronics
• 4-wire cable with anti-kink sleeve
Conditions of use
-40 ... +110 °C (-40 ... +230 °F)
Degree of protection to EN 60529
P66/IP68
Mechanical load
Class 4M7 according to
EN 60721-3-4
Class 4K4 according to
EN 60721-3-4
Climatic class
6
Dimensions (W x H x D) in mm (inch)
Permissible ambient temperature
Design
Housing material
Stainless steel 1.4571 (316Ti SST)
Cable
Ends with wire protectors and cable
shoe for connection to the
SITRANS DA400
Weight
125 g (0.276 lb)
Mounting location
Zone 0/1 or zone 20/21/22
Dimensions (W x H x D) in mm (inch)
26 x 29 x 40 (1.02 x 1.14 x 1.57)
Power Supply
Power fed from device
Certificates and approvals
Explosion protection
Intrinsic safety "i"
TÜV 2005 ATEX 2876 X
Marking
II 1 G EEx ia IIC T6/T5/T4 or
II 1 D EEx ia D 20/21/22 T160
Permissible ambient temperature
• Category 1G
- Temperature class T4, T5
- Temperature class T6
-20 ... +60 °C (-4 ... +140 °F)
-20 ... +50 °C (-4 ... +122 °F)
• Category 2G
- Temperature class T4
- Temperature class T5
- Temperature class T6
-40 ... +110 °C (-40 ... +230 °F)
-40 ... +80 °C (-40 ... +176 °F)
-20 ... +65 °C (-4 ... +149 °F)
• Category 1D or 2D
- Temperature class T160
-40 ... +110 °C (-40 ... +230 °F)
68 x 77 x 42 (2.68 x 3.03 x 1.65)
Certificates and Approvals
Explosion protection
Intrinsic safety "i"
TÜV 05 ATEX 2917 X
Marking
II (2) G [EEx ib] IIC
Selection and Ordering data
Article No.
Acoustic diagnostics unit SITRANS DA400
with local programming and display
7MJ2400- 7 7 A0 7
Click on the Article No. for the online configuration in the PIA Life Cycle Portal.
Communication
• PROFIBUS DP
1A
• PROFIBUS PA
2B
Explosion protection
• Without
A
• With EEx ia/ib to ATEX1)
B
Application software
For continuous condition monitoring of positive
displacement pumps
For material flow monitoring in pipes,
raceways and conveyors
Acoustic sensors for diagnostics unit
SITRANS DA400
7MJ2000-1 7 7 0 0
Explosion protection
• Without
A
• With EEx ia to ATEX
B
Cable
(incl. pin and allen screw M6)
20 m
B
40 m
C
100 m
F
For rail mounting NS 32 and NS35/7.5 in
non-hazardous areas
Explosion-protected output circuit EEx ib
1)
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Click on the Article No. for the online configuration in the PIA Life Cycle Portal.
Safety barriers for sensors
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1
Not in combination with trigger sensor.
7MJ2010-1AA
© Siemens AG 2016
Process Protection
Acoustic sensors for pump monitoring
SITRANS DA400 acoustic diagnostic unit
9 (0.35)
12 (0.5)
26 (1.02)
70 (2.7)
6
(0.24)
Ø3 (0.12)
In1, In2
SITRANS DA400
49 (1.9)
47 (1.8)
42 (1.6)
Ø40
(1.57)
Out1, Out2
SENSOR
10 (0.39)
15
(0.59)
6.5
(0.26)
11 (0.43)
7
(0.28)
■ Dimensional drawings
28.5 (1.12)
Foot
element
68 (2.7)
Sensor for SITRANS DA400, dimensions in mm (inch)
10 (0.394)
172 (6.77)
D
5 (0.2)
■ Schematics
6
In1
Approx.
30 (1.18)
Out2
41
42
51
52
80 (3.15)
A
22
21
32
31
Ground terminal
A
17
(0.67)
Safety barrier for SITRANS DA400, dimensions in mm (inch)
41
42
51
52
Out1
152 ± 0.2 1)
(5.98 ± 0.008)
Pg 13.5
SW 24
77 (3.0)
269 (10.59)
Ø13 (0.511)
286 ± 0.2 (11.26 ± 0.008)1)
94 (3.70)
306 (12.05)
94 (3.70)
Ø6.5 (0.26)
D-D
D
Pg 11
SW 22
1)
Intrinsically
safe towards
sensor
3 mounting
holes (M6)
In2
22
21
32
31
Not intrinsically
safe towards
SITRANS DA400
Safety barrier for SITRANS DA400, terminal assignment
SITRANS DA400, dimensions in mm (inch)
Supply
L+/L- Power supply
(Any polarity with
PROFIBUS PA)
DO
Digital output
Sens Sensor
In
yl
gr
br
bl
I+
Input
Yellow
Green
Brown
Black
Analog current input +
DI
A
B
Ground
Digital input
Signal A (green) with PROFIBUS DP,
any with PROFIBUS PA
Signal B (red) with PROFIBUS DP,
any with PROFIBUS PA
SITRANS DA400, terminal assignment
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