Cerabar M, Deltabar M, Deltapilot M / 4...20 mA HART Commissioning
Endress+Hauser 73
6.8 Electrical differential pressure measurement with
gauge pressure sensors (Cerabar M or Deltapilot M)
Example:
In the example given, two Cerabar M or Deltapilot M devices (each with a gauge pressure sensor)
are interconnected. The pressure difference can thus be measured using two independent Cerabar
M or Deltapilot M devices.
!
Note!
For a description of the parameters mentioned Chap. 10.2 "Description of parameters".
P01-XMX5Xxx-14-xx-xx-xx-001
1 Shut-off valves
2 e.g. filter
Fieldgate
FXA520
FXN 520
FXN 520
Multidrop-Connector
FXN520
Cerabar M/
Deltapilot M
➀
➁
➀
➁
Cerabar M/
Deltapilot M
Description
Adjustment of the Cerabar M/Deltapilot M on the high pressure side
1 Select the "Pressure" measuring mode via the "Measuring mode" parameter.
Menu path: Setup Measuring mode
2 Select a pressure unit via the "Press eng. unit" parameter, here "mbar" for example.
Menu path: Setup Press. eng. unit
3 The Cerabar M/Deltapilot M is unpressurized, perform position adjustment, see ä 56.
4 Switch on burst mode via the "Burst mode" parameter
Menu path: Expert Communication HART Config.
5 Set the output current to "Fixed" 4.0 mA via the "Current mode" parameter.
Menu path: Expert Communication HART Config
6 Configure an address 0 via the "Bus address" parameter, e.g. bus address = 1
(HART 5.0 master: Range 0 to 15, where address = 0 calls up the "Signaling" setting; HART 6.0 master: range 0 to
63)
Menu path: Expert Communication HART Config.
Description
Adjustment of the Cerabar M/Deltapilot M on the low pressure side (the differential is generated in this
device)
1 Select the "Pressure" measuring mode via the "Measuring mode" parameter.
Menu path: Setup Measuring mode
2 Select a pressure unit via the "Press eng. unit" parameter, here "mbar" for example.
Menu path: Setup Press. eng. unit
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