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TÀI LIỆU Operating Instructions - Cerabar S Pressure Transmitter PMP 731 (Endress + Hauser)
The Cerabar S pressure transmitter measures the pressure of gases, steam/vapour and liquids and can be used in all areas of chemical and process engineering.
Operating principle
Ceramic sensor
The system pressure acts directly on the rugged ceramic diaphragm of the pressure sensor deflecting it by a maximum of 0.025 mm. A pressure-proportional change in the capacitance is measured by the electrodes on the ceramic substrate and diaphragm.
The measuring range is determined by the thickness of the ceramic diaphragm.
Metal sensor
The process pressure deflects the separating diaphragm with a filling liquid transmitting the pressure to a resistance bridge. The bridge output voltage, which is proportional to pressure, is then measured and processed.
Level measurement
The hydrostatic pressure of a column of liquid enables its level to be measured continuously by a pressure transmitter if the densityρof the liquid is known.
CONTENTS:
1 Introduction ............ 9
1.1 Measuring system . . . . . . . . 10
2 Installation ............. 11
2.1 Mounting instructions without
diaphragm seal (PMC/PMP 731) . . 11
2.2 Mounting instructions with diaphragm
seal (PMC 631, PMP 635) . . . . . 13
2.3 Mounting accessories . . . . . . 14
2.4 Mounting position . . . . . . . . 15
2.5 Electrical connection . . . . . . . 16
3 Operation ............. 18
3.1 On-site operation . . . . . . . . 18
3.2 Operation using the Universal HART
Communicator DXR 271 . . . . . . 19
3.3 Operation with Commulog VU 260 Z . 19
3.4 Operation with Commuwin II . . . . 20
4 Local Operation ........... 21
4.1 Commissioning the measuring point . 21
4.2 Dampingτ ........... 23
4.3 Locking/unlocking operation . . . . 23
5 Pressure Measurement........ 24
5.1 Start-up with the Universal HART
Communicator DXR 271,
Commulog VU 260 Z or Commuwin II 24
5.2 Locking/unlocking operation . . . . 28
5.3 Measuring point information . . . . 29
6 Level Measurement ......... 30
6.1 Start-up with the Universal HART
Communicator DXR 275,
Commulog VU 260 Z or Commuwin II 30
6.2 Calibration with reference pressure . 34
6.3 Dry calibration . . . . . . . . . 35
6.4 Linearisation . . . . . . . . . . 36
6.5 Locking/unlocking operation . . . . 39
6.6 Measuring point information . . . . 40
7 Diagnosis and Trouble-Shooting....41
7.1 Diagnosis of errors and warnings . . 41
7.2 Current simulation . . . . . . . . 44
7.3 Reset . . . . . . . . . . . . . 44
7.4 Editing limits . . . . . . . . . . 46
8 Maintenance and Repair .......48
8.1 Repair . . . . . . . . . . . . . 48
8.2 Mounting the display . . . . . . . 49
8.3 Exchanging the sensor module and
electronics . . . . . . . . . . . 50
8.4 Recalibration . . . . . . . . . . 51
8.5 Changing the gasket . . . . . . . 52
8.6 Replacement parts . . . . . . . . 52
9 Technical Data ...........54
10 Operating Matrix ..........59
10.1 Matrix HART Commuwin II
(Software version 7.1) . . . . . . . 59
10.2 Matrix Universal HART Communicator
DXR 275 (Software version 7.1) . . . 60
10.3 Block diagram . . . . . . . . . . 60
10.4 Matrix Commuwin II INTENSOR
(Software version 5.0) . . . . . . . 61
10.5 Description of parameters . . . . . 62
Index ...............67
The Cerabar S pressure transmitter measures the pressure of gases, steam/vapour and liquids and can be used in all areas of chemical and process engineering.
Operating principle
Ceramic sensor
The system pressure acts directly on the rugged ceramic diaphragm of the pressure sensor deflecting it by a maximum of 0.025 mm. A pressure-proportional change in the capacitance is measured by the electrodes on the ceramic substrate and diaphragm.
The measuring range is determined by the thickness of the ceramic diaphragm.
Metal sensor
The process pressure deflects the separating diaphragm with a filling liquid transmitting the pressure to a resistance bridge. The bridge output voltage, which is proportional to pressure, is then measured and processed.
Level measurement
The hydrostatic pressure of a column of liquid enables its level to be measured continuously by a pressure transmitter if the densityρof the liquid is known.
CONTENTS:
1 Introduction ............ 9
1.1 Measuring system . . . . . . . . 10
2 Installation ............. 11
2.1 Mounting instructions without
diaphragm seal (PMC/PMP 731) . . 11
2.2 Mounting instructions with diaphragm
seal (PMC 631, PMP 635) . . . . . 13
2.3 Mounting accessories . . . . . . 14
2.4 Mounting position . . . . . . . . 15
2.5 Electrical connection . . . . . . . 16
3 Operation ............. 18
3.1 On-site operation . . . . . . . . 18
3.2 Operation using the Universal HART
Communicator DXR 271 . . . . . . 19
3.3 Operation with Commulog VU 260 Z . 19
3.4 Operation with Commuwin II . . . . 20
4 Local Operation ........... 21
4.1 Commissioning the measuring point . 21
4.2 Dampingτ ........... 23
4.3 Locking/unlocking operation . . . . 23
5 Pressure Measurement........ 24
5.1 Start-up with the Universal HART
Communicator DXR 271,
Commulog VU 260 Z or Commuwin II 24
5.2 Locking/unlocking operation . . . . 28
5.3 Measuring point information . . . . 29
6 Level Measurement ......... 30
6.1 Start-up with the Universal HART
Communicator DXR 275,
Commulog VU 260 Z or Commuwin II 30
6.2 Calibration with reference pressure . 34
6.3 Dry calibration . . . . . . . . . 35
6.4 Linearisation . . . . . . . . . . 36
6.5 Locking/unlocking operation . . . . 39
6.6 Measuring point information . . . . 40
7 Diagnosis and Trouble-Shooting....41
7.1 Diagnosis of errors and warnings . . 41
7.2 Current simulation . . . . . . . . 44
7.3 Reset . . . . . . . . . . . . . 44
7.4 Editing limits . . . . . . . . . . 46
8 Maintenance and Repair .......48
8.1 Repair . . . . . . . . . . . . . 48
8.2 Mounting the display . . . . . . . 49
8.3 Exchanging the sensor module and
electronics . . . . . . . . . . . 50
8.4 Recalibration . . . . . . . . . . 51
8.5 Changing the gasket . . . . . . . 52
8.6 Replacement parts . . . . . . . . 52
9 Technical Data ...........54
10 Operating Matrix ..........59
10.1 Matrix HART Commuwin II
(Software version 7.1) . . . . . . . 59
10.2 Matrix Universal HART Communicator
DXR 275 (Software version 7.1) . . . 60
10.3 Block diagram . . . . . . . . . . 60
10.4 Matrix Commuwin II INTENSOR
(Software version 5.0) . . . . . . . 61
10.5 Description of parameters . . . . . 62
Index ...............67
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