PIZ Differential Pressure Transducer as a two-wire system

In addition to differential pressure, the PIZ differential-pressure transducer also records positive and negative overpressure. The central unit is a pressure cell with a diaphragm spring made of beryllium bronze which, in accordance with the pressure difference, is displaced between two chambers. The displacement is measured, without making contact, via an inductive displacement recorder. The device does not contain any components that can rub against each other or parts subject to mechanical wear. The device is best suited for use in air-conditioning and ventilation units, for monitoring filling levels and for filter control.

Special features:

  • for positive and negative differential pressures
  • highly accurate and stable for long periods
  • llittle zero point drift or hysteresis; largely independent of temperature
  • also available as a two-wire system!

Measuring ranges:

from +/- 50 Pa to +/- 100 kPa


+/- 1%, optional +/- 0.5 +/- 0.2 %

Output signals:

0- 10V, 0- 20mA, 4- 20mA

Supply voltages:

24 VAC, 24 VDC, 230 VAC


Air, all non aggressive gases

Time constants:



(optional) 1, 2, 5 s

DATASHEET» PU_-_PI_-_PIZ.en.pdf (681kB)
HANDBOOK» PIZ.en.pdf (268kB)