Endress+Hauser Gammapilot M FMG60 - Calibration for Level Measurement and Point Level Detection

Commissioning Gammapilot M FMG60 PROFIBUS PA
38 Endress+Hauser
This function is used to specify the output damping time τ (in seconds). A change in the
measured value is attenuated by this time. After a change in the level or density it takes 5 x τ
until the new measured value is reached.
5 x t
t
L
1
2
A0018110
1 Level change (or density change)
2 Measured value
Value range
1 to 999 s
Default value
The default value depends on the selected "Measurement mode" (*05):
• Level: 6 s
• Switch: 6 s
• Density: 60 s
• Concentration: 60 s
Selecting the output damping value
The output damping value depends on the process conditions. Increasing the output damping
value makes the measured value considerably steadier but also slower. In order to reduce the
influence of stirrers or turbulent surfaces, it is advisable to increase the output damping value.
However, the value selected for output damping should not be too large so that rapid changes
in the measured value can also be detected quickly.
6.5 Calibration for level measurement and point level detection
6.5.1 General principles
The calibration points for the measurement are entered in the "Calibration" (*1) function
group. Each calibration point consists of a level and the associated pulse rate.