The pressure is transferred to the filling liquid via the measuring diaphragm (which is on the inside of the circumference of the pipe diaphragm seal) and then via the capillary pipe to the measuring cell of the transmitter. The filling liquid fills the interior of the pipe diaphragm seal, the capillary tube and the measuring cell of the transmitter gas-free.

Note:

For operation in the underpressure range, as well as during commissioning, it is recommendable to use a vacuum-proof diaphragm seal (see Selection and Ordering data).