Endress+Hauser Gammapilot FMG50 - Page 53

Gammapilot FMG50 Commissioning
Endress+Hauser 53
3. Full calibration point level: the radiation is switched on and the beam path is
completely covered by medium.
 If these conditions are met, the calibration can be started.
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The full calibration can be performed by pressing the "Start full calibration"
button. The measurement then starts automatically and continues, at the very
maximum, for as long as has been configured for the calibration time. However,
the process can also be stopped manually by pressing the "Stop calibration"
button.
The calibration stops automatically as soon as a million pulses have been
totalized.
Alternatively, the full calibration can also be entered directly.
For the "Next" button in the Wizard to be enabled, the value must, however, be
changed from the start value, at least temporarily.
TIP: if the vessel cannot be filled appropriately, the full calibration can also be
performed with the radiation switched off. This is a way of simulating a
completely covered radiation path. In this case, full calibration is identical to
background calibration and 0 cnt/s is typically displayed.
4. The calibration has been performed successfully.

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5. The settings for the current output are then made in the "Output settings" step
Level calibration
Depends on the operating mode selected.
For a level measurement, the Gammapilot FMG50 requires at least two other calibration
points in addition to the background calibration:
• Empty calibration
• Full calibration
Linearization level measurement: the linearization defines the correlation between the
pulse rate and the level (0 to 100%).
The Gammapilot FMG50 makes a variety of linearization modes available:
• Pre-programmed linearizations for frequent standard cases ("linear", "standard")
• Entry of any linearization table adapted to the specific application
• The linearization table consists of up to 32 "normalized pulse rate : level" value pairs.
• The linearization table must be monotonic decreasing, i.e. a higher pulse rate must
always be paired with a lower level.