Instruction manual
7532 Radar Tank Gauge
Varec, Inc. 81
Table 10-2: Application Errors
Error Output Possible cause Remedy
During filling/
emptying the
measured value
jumps sporadically
to a higher/lower
level
During the definition of
the auto correction
table, the device has
been switched off and
the level has changed.
1. Reset “555”
2. If possible, do not switch off
the device before the complete
measuring range has been
passed through.
During filling/
emptying the
measured value
jumps downwards
Multiple echoes
yes
1. Check the tank shape (002),
e.g. “dome ceiling” or
“horizontal cyl”
2. In the range of the blocking
dist. (059), there is no echo
evaluation
• Adapt the value
3. If possible, do not select
central installation position
(see page 13)
4. Activate auto correction (031)
E641 ((loss of echo) Level echo is too weak.
Possible causes:
• Rough surface due
to filling/emptying
• Agitator running
• Foam
yes
1. Check application parameters
(002), (003), and (004)
2. If necessary, select a better
installation position and/or
larger antenna (see page 13)
E641 (loss of echo)
after turn on the
power supply
If the device is configured to Hold by loss of echo
the output is set to any value/current.
Noise level during the
initialization phase too
high.
Repeat once more empty calibr.
(005).
Caution! Before configura-
tion, change with
to edit mode.
20 mA/100%
4 mA/0% t →
actual
expected
20 mA/100%
4 mA/0% t →
expected
actual
20 mA/100%
E 641
4 mA/0% t →
actual
expected
+
-
or