The DP5-B works on the force balance principle and
consists of two main units: The measuring unit which
detects the differential pressure variation and consists of
two forged bodies and a measuring capsule. The
transmission unit converts the differential force applied
to the measuring element into a proportional output
pneumatic signal. The output pressure, generated by a
flapper nozzle relay, feeds the feedback bellows with a
rising pressure until the balance between bellows force
and measuring element is reached. The whole
transmission unit is contained within a water-resistant
housing.

For models and options see PDF documentation below.

* Zoekterm: pneumatische, pneumatic, transmitters, OMC