Endress+Hauser Deltabar FMD72, Operating Instructions Manual

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Installation Deltabar FMD72
16
6.5 Installing the sensor modules
• The nameplate on the sensor module specifies where the sensor module is typically installed:
HP (bottom)
LP (top)
For further information see the "Function" (
®
ä 11)section.
• Due to the orientation of the sensor modules, there may be a shift in the zero point, i.e. when the
container is empty or partially full, the measured value does not display zero. You can correct this
zero point shift: see "Commissioning without an operating menu"(
®
ä
39) or the "Position
adjustment" section(
®
ä
44) .
• Always install the sensor module HP below the lowest measuring point.
• Always install the sensor module LP above the highest measuring point.
• Do not mount the sensor modules in the filling curtain or at a point in the tank which could be
affected by pressure pulses from an agitator.
• Do not mount the sensor modules in the suction area of a pump.
• The adjustment and functional test can be carried out more easily if you mount the sensor modules
downstream of a shutoff device.
• If a heated sensor module is cooled during the cleaning process (e.g. by cold water), a vacuum
develops for a short time, whereby moisture can penetrate the sensor through the pressure
compensation (3). If this is the case, mount the sensor with the pressure compensation (3) pointing
downwards.
• Keep the pressure compensation and GORE-TEX® filter (3) free from contamination.
• Do not clean or touch process isolating diaphragms with hard or pointed objects.
2
3
1
A0017512
6.6 Seal for flange mounting
NOTICE
Distorted measurement results.
The seal is not allowed to press against the process isolating diaphragm as this could affect the
measurement result.
►
Ensure that the seal is not touching the process isolating diaphragm.