Installing The Sensor Modules; Seal For Flange Mounting - Endress+Hauser Deltabar FMD72 Operating Instructions Manual

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Installation

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.

6.6

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.

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Deltabar FMD72

A0017512

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