20
© Servomex Group Limited 2017
AquaXact Issue 1.0
8
Troubleshooting
Instrument
8.1
This instrument performs diagnostic tests on power up as well as once every three
seconds. The following table lists possible error/unexpected indications that may occur.
Symptom
(more than 25 seconds after power up)
Possible cause
Remedy
Current loop
Pin 3
Fixed at 21 mA
1. Failed Device
2. Open sensor
3. Shorted sensor
Check sensor & cycle
power, if problem
persists return
instrument
4 to 20 mA
Normal operation
0 mA
High impedance
1. Cable open
2. Fuse open due to
excessive voltage
1. Check cables
2. Check power 13 to
33 Vdc
Check source
polarity pin 7 +;
Pin 1 –
3. Cycle power
