differential pressure transmitter / piezoelectric / ceramic / analog
EDP1 GHM Messtechnik GmbH



  • Pressure type:


  • Technology:

    piezoelectric, ceramic

  • Output signal:


  • Other characteristics:

    stainless steel, compact, wet/wet, two-wire, temperature-compensated, for liquids and gases

  • Process temperature:

    Min.: -20 °C (-4 °F)

    Max.: 70 °C (158 °F)

  • Pressure range:

    Min.: 1 bar (14.5 psi)

    Max.: 400 bar (5,801.51 psi)


4..20 mA two-wire differential pressure transducer
●Ideally suited to wet/wet applications
●Can also be used at high differential pressures
●High chemical resistance thanks to top-quality materials
●Compact design
The differential pressure transmitter EDP1 is intended for the
measurement of differential pressures in liquids and gases. It
consists of a differential pressure sensor cell as a sensor, and of an
integrated transformer.
The differential pressure measuring cell has two separate ceramic
pressure sensors with a measuring bridge applied by thick film
technology. The bridge signal of each sensor is temperature-compensated. The integrated microcontroller measures the signals
from the two sensors, and calculates the pressure difference. This
is output as a 4..20 mA signal (two-wire).
The ceramic sensors are available in various pressure ranges. This
limits the maximum pressure applied to each connection. The
differential pressure, which should correspond to an output signal
of 20 mA, can be freely selected within this range, but should not
be less than 10 % of the metering range of the single cells, so that
a sufficient resolution and accuracy are ensured.
The microcontroller also permits customer-specific characteristic
curves and output signals, e.g. measurement of positive and
negative pressure differences (available on request).
The medium comes into contact exclusively with top-quality
materials such as AL2O3 -ceramic, stainless steel, FKM seals.