Endress+Hauser Gammapilot M FMG60 - Possible calibration errors

Gammapilot M FMG60 with FOUNDATION Fieldbus Troubleshooting
Endress+Hauser 97
9.2 Possible calibration errors
9.3 Software history
Error Possible cause and remedy
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 accordingly, if required
• Pressure in the vessel has not been considered in the activity calculation
→ recalculate activity and change source accordingly, if required
• No radiation source in the source container
→ load source capsule in the container
• Source too weak
→ use source with higher activity
Pulse rate to high at empty
vessel
• Activity too high
→ attenuate radiation, e.g. by mounting a steel plate in front of the source container; or
exchange source
• External radiation source (e.g. by gammagraphy)
→ shield off if possible; repeat calibration without external radiation source
Pulse rate too high at full
vessel
• External radiation source (e.g. by gammagraphy)
→ shield off if possible; repeat calibration without external radiation source
Date Software version Software modifications Documentation
Since
06.2005
01.01.00 Original software. BA330F/00/en/06.05
71000010
BA287F/00/en/08.04
52023818
Since
07.2005
01.01.02
Since
11.2005
01.01.04 Bug fix.
Concentration mode corrected.
Density measurement recalibration corrected.
Since
08.2006
01.01.06 Bug fix.
Corrections for high and low pulse rate.
Since
03.2009
01.03.02 Automatic restart after error A165 caused by empty pipe
at denmsit measurements
(pulse rate > 160000 c/s)
New filtering function for Gamma Modulator FHG65
implemented
BA330F/00/en/03.09
71091971
BA287F/00/en/06.07
71041170