5�4 Ventilation diaphragm. IFM PG2734

► To avoid dead space adhere to the dimensions:

L < (D)�

1

L

D

1: Leakage port

5.4 Ventilation diaphragm

5.4.1 Function ventilation diaphragm

The ventilation diaphragm enables the relative pressure measurement since barometric and temperature-dependent pressure fluctuations between the measuring cell and the environment are compensated for�

The ventilation diaphragm is protected against damage by a screwed filter cover with circumferential ports�

For a correct functioning of the diaphragm please take the following into account:

► Remove soiling and cleaning agents immediately using plenty of limedeficient splash water�

If the sensor is in a cooling stage:

► Avoid contact of the diaphragm with liquids:

> Avoids negative pressure in the measuring system resulting in a slightly falsified measured value and additional strain on the diaphragm�

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