Endress+Hauser Waterpilot FMX167, Руководство по эксплуатации

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Waterpilot FMX167 Operability
Hauser 17
6 Operability
Hauser offers comprehensive measuring point solutions with display and/or
evaluation units for the Waterpilot and TMT181 temperature head transmitter.
Please contact your Hauser sales representative, if you have any other
questions. Contact addresses can be found on the Internet: www.endress.com/
worldwide.
7 Troubleshooting
7.1 Troubleshooting specific to Waterpilot FMX167 with
optional Pt100
7.2 Troubleshooting specific to TMT181 temperature
head transmitter
Error description Cause Remedial action
No measuring signal 4 to 20 mA cable not connected
correctly Connect device in accordance with

ä
13, Kap. 5.1
No power supplied via the 4 to 20
mA cable Check current loop
Supply voltage too low (min. 10 V
DC) – Check supply voltage.
– Overall resistance greater than
max. load resistance

ä
13,
Kap. 5.1
Waterpilot defective Replace the Waterpilot
Temperature measured value is
inaccurate/incorrect (only for
Waterpilot FMX167 with Pt100) Pt100 connected in 2-wire circuit,
cable resistance was not
compensated for – Compensate cable resistance
– Connect Pt100 as 3-wire or 4-
wire circuit
Error description Cause Remedial action
No measuring signal 4 to 20 mA cable not connected
correctly Connect device in accordance with

ä
13, Kap. 5.1
No power supplied via the 4 to 20
mA cable Check current loop
Supply voltage too low (min. 8 V DC) – Check supply voltage.
– Overall resistance greater than
max. load resistance

ä
13,
Kap. 5.1
Error current

3.6 mA or

21 mA Pt100 not connected correctly Connect device in accordance with

ä
13, Kap. 5.1
4 to 20 mA cable not connected
correctly Connect device in accordance with

ä
13, Kap. 5.1
Pt100 resistance thermometer
defective Replace the Waterpilot
Temperature head transmitter
defective Replace the temperature head
transmitter
Measured value is inaccurate/
incorrect Pt100 connected in 2-wire circuit,
cable resistance was not
compensated – Compensate cable resistance
– Connect Pt100 as 3-wire or 4-
wire circuit