NivoRadar
®
Continuous level measurement
Series NR 7200
Technical information / Instruction manual
Diagnostics and servicing
page 47
Error
Cause
Rectification
4 … 20 mA signal not stable Fluctuating measured value
Set damping
4 … 20 mA signal missing
Electrical connection faulty
Check connection, correct, if neces-
sary
Voltage supply missing
Check cables for breaks; repair if nec-
essary
Operating voltage too low, load resist-
ance too high
Check, adapt if necessary
Current signal greater than
22 mA, less than 3.6 mA
Sensor electronics defective
Replace device or send in for repair
depending on device version
Status messages according to NE 107
The instrument features self-monitoring and diagnostics according
to NE 107 and VDI/VDE 2650. In addition to the status messages in
the following tables there are more detailed error messages avail-
able under the menu item " Diagnostics" via the respective adjust-
ment module.
The status messages are divided into the following categories:
•
Failure
•
Function check
•
Out of specification
•
Maintenance required
and explained by pictographs:
4
1
2
3
Fig. 26: Pictographs of the status messages
1 Failure - red
2 Out of specification - yellow
3 Function check - orange
4 Maintenance required - blue
Malfunction (Failure):
Due to a malfunction in the instrument, a fault signal is output.
This status message is always active. It cannot be deactivated by
the user.
Function check:
The instrument is being worked on, the measured value is temporar-
ily invalid (for example during simulation).
This status message is inactive by default.
Status messages
