Possible Calibration Errors; Software History - Endress+Hauser PROFIBUS Gammapilot M FMG60 Operating Instructions Manual

Gammapilot M FMG 60 - PROFIBUS PA
7.2

Possible calibration errors

Error Possible cause and remedy
Pulse rate too low at empty • Radiation source switched off
→ Switch on source at the source container
vessel
• Incorrect alignment of radiation beam
→ realign beam
• Build-up in the vessel
→ Clean vessel or
→ recalibrate (if build-up 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 • Activity too high
→ attenuate radiation, e.g. by mounting a steel plate in front of the source container; or
vessel
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 • External radiation source (e.g. by gammagraphy)
→ shield off if possible; repeat claibratin without external radiation source
vessel
7.3

Software history

Software version/date Changes software
V 01.01.04 / 11.05 Original software of the PROFIBUS PA instru-
ment;
Operation via:
• ToF Tool - FieldTool Package V 3.02.00
• FHX40
Troubleshooting
Changes documentation
Original documentation:
BA 329F/00/en/11.05
81