NivoRadar
®
Continuous level measurement
Series NR 4000
Technical information / Instruction manual
Diagnostics and servicing
page 39
Code
Text message
Cause
Rectification
DevSpec
State in CMD 48
M509
Software update
running
Software update running
Wait until software update is fin-
ished
Bit 9 of
Byte 14 … 24
M510
No communication
with the main con-
troller
Communication between main
electronics and display module
disturbed
Check the connection cable to
the display
Send instrument for repair
Bit 10 of
Byte 14 … 24
M511
Inconsistent soft
-
ware configuration
A software unit requires a soft-
ware update
Carry out software update
Bit 11 of
Byte 14 … 24
Treatment of measurement errors
The tables below give typical examples of application-related meas-
urement errors.
The images in column " Error description" show the actual
level as a dashed line and the output level as a solid line.
1
2
Level
time
0
1 Real level
2 Level displayed by the sensor
Note:
If the output level is constant, the cause could also be the fault set-
ting of the current output to " Hold value".
If the level is too low, the reason could be a line resistance that is
too high
Liquids: Measurement error at constant level
Fault description
Cause
Rectification
Measured value shows a too
low or too high level
Leve
l
time
0
Min./max. adjustment not correct
Adapt min./max. adjustment
Incorrect linearization curve
Adapt linearization curve
