Endress+Hauser RTA421 - Applications - Deep Well Measurement; Well Water Level Measurement; Fault Finding and Repair; System Fault Messages

7.2 Deep well measurement
The water depth in % relative to the distance of the water
surface to the well entry at ground level in a deep well is to
measured and displayed front end.
Example:
Setting up:
8. Fault finding and repair
During production all units go through a number of quality
control stages. In order to assist you in fault finding we have
listed a number of possible faults, causes and solutions.
System fault messages
Faults that could occur during the self test or during operation
are immediately indicated by the LED and/or on the LC display.
Menu group Address Set up value
Analogue input Input range
RA NG
20-4
Set point setting up see chapter 6.2
Well full:
- Sensor signal 20 mA
- numeric display is to be 0%
(when operating + or -)
Well empty:
- Sensor signal 4 mA
- numeric display is to be
100% (when operating
+or-)
Contactor
40