Deltabar FMD71, FMD72 Commissioning
Endress+Hauser 53
9.10.5 "In height" level selection Calibration with reference pressure
(wet calibration)
Example:
In this example, the volume in a tank should be measured in liters. The maximum volume
of 1 000 l (264 gal) corresponds to a level of 4.5 m (15 ft).
The minimum volume of 0 liters corresponds to a level of 0.5 m (1.6 ft) since the device is
mounted below the start of the level measuring range. The density of the fluid is 1 g/cm
3
(1 SGU).
Prerequisite:
• The measured variable is in direct proportion to the pressure.
• The tank can be filled and emptied.
The values entered for "Empty Calib./Full Calib.", "Set LRV/Set URV", and the applied
pressure values must be at least 1% apart. The value will be rejected, and a warning
message displayed, if the values are too close together. Further limit values are not
checked, i.e. the values entered must be appropriate for the sensor module and the
measuring task for the device to be able to measure correctly.
Description
1 Select the "Level" measuring mode via the
"Measuring mode (005)" parameter.
Menu path: Setup → Measuring mode
A0017661
A See table, step 8.
B See table, step 9.
2 Select a pressure engineering unit via the
"Press eng. unit (125)" parameter, here "mbar"
for example.
Menu path: Setup → Press. eng. unit
3 Select the "In height" level mode via the "Level
selection (024)" parameter.
Menu path: Setup → Extended setup → Level →
Level selection
4 Select a volume unit via the "Unit before lin.
(025)" parameter, here "l" (liters) for example.
Menu path: Setup → Extended setup → Level →
Unit before lin.
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