Level measurement

98

Continuous level measurement in liquids

4. Instrument selection within the measuring principle

Installation instructions hydrostatics (differential pressure)

Closed tanks with FMD78 (capillary diaphragm seal)

• Level measurement is only safeguarded between the upper edge of the lower and the lower edge of the upper diaphragm seal • In vacuum applications, it is recommended to install the pressure transmitter below the lower diaphragm seal. This will avoid a vacuum load of the diaphragm seal caused by the presence of filling oil in the capillaries

max.

p 2

min.

p 1

C

Endress+Hauser Applicator Further installation instructions are presented in the "Sizing Diaphragm Seal" Applicator