Troubleshooting
Gammapilot M FMG60 FOUNDATION Fieldbus
92
Hauser
Code
Error description
Remedial action
A636 Calibration date not plausi-
ble
Check calibration date and enter it again
(
"System parameters" (*C)
function group,
"Calibration date" (*C7)
function)
A637 Operating mode not
defined
Enter operating mode
("Basic setup" (*0) function group,
"Operating mode" (*04)
function)
A638 Measurement mode not
defined
Enter measurement mode
("Basic setup" (*0) function group,
"Measurement mode" (*05)
function)
A639 Temperature compensa-
tion not complete
Enter at least two "temperature - density" value pairs (
"Temperature com-
pensation" (*3)
function group)
W662 High sensor temperature
(warning)
Install water cooling jacket or thermal shielding
A663 Sensor temperature too
high (alarm)
Install water cooling jacket or thermal shielding
A664 Temperature measurement
error
Check the correct functioning and connection of the Pt100 sensor
W681 Current out of range (3.8
to 20.5 mA)
Check calibration and linearization
A692 Gammagraphy detected
(alarm)
• Check whether interference radiation is present or the
"Hold time"
(*54)
is too short.
• If no interference radiation is present: decrease gammagraphy sensitiv-
ity
(
"Gammagraphy" (*5)
function group,
"Sensitivity" (*52)
function)
W693 Gammagraphy detected
(warning)
Wait for the end of the gammagraphy measurement
W695 Measurement counter
overflow
The local dose rate is too high (where applicable, reduce with blind
flange)
10.2 Possible calibration errors
Error
Possible reasons
Solution
Pulse rate too low at empty
vessel
Radiation source switched off
Switch on source at the source container
Incorrect alignment of radiation beam Realign beam
Buildup in the vessel
Clean vessel or
Recalibrate (if buildup is stable)
Fittings in the vessel have not been
considered in the activity calculation
Recalculate activity and change source if
required
Pressure in the vessel has not been
considered in the activity calculation
Recalculate activity and change source if
required
No radiation source in the source con-
tainer
Load source capsule in the container
Source too weak
Use source with higher activity
Pulse rate too high at empty
vessel
Activity too high
Attenuate radiation, e.g. by mounting a
steel plate in front of the source con-
tainer; or exchange source
External radiation sources present
(e.g. from gammagraphy)
Shield off if possible; repeat calibration
without external radiation source
Pulse rate too high at full
vessel
External radiation sources present
(e.g. from gammagraphy)
Shield off if possible; repeat calibration
without external radiation source
