Endress+Hauser Gammapilot FMG50 - Gammagraphy Settings; Gammagraphy Detection Parameter; Gammagraphy Hold Time Parameter

Gammapilot FMG50 Diagnostics and troubleshooting
Endress+Hauser 89
8.6.4 Gammagraphy settings
Gammagraphy detection can be configured under:
Application -> Sensor -> Gammagraphy detection
8.6.5 Gammagraphy detection parameter
Gammagraphy detection can be switched on and off with this parameter.
In addition, the event class can be defined according to NE107
Gammagraphy detection -> Off
Gammagraphy detection is switched off. In a gammagraphy event, the current output will
display -10 % measured value (3.8 mA).
Gammagraphy detection -> Alarm
Gammagraphy detection is switched on. In a gammagraphy event, the current output will
adopt the failure current (3.6 mA or ≥ 21.5 mA, depending on the configuration of the
alarm current).
Gammagraphy detection -> Warning
Gammagraphy detection is switched on. The current output is held at the last valid
measured value before gammagraphy detection.
8.6.6 Gammagraphy hold time parameter
This parameter defines how long the measured value is held if gammagraphy radiation
has been detected. After this time, the current output adopts the value defined in the
Gammagraphy detection parameter.
The hold time should be slightly longer than the maximum duration of a gammagraphy
measurement. An alarm is signaled if the maximum pulse rate is still exceeded after the
hold time.
An event is only written to the event list once the hold time has elapsed
L
WARNING
‣
A change in the measured value is not detected during the hold time. In a safety
protection circuit, the selected hold time may not be greater than the permitted process
safety time