P 34

Differential pressure transmitter with very small dimensions – ideal for control cabinet installation and P-/T-compensated volume flow measuring

Technical data
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Differential pressure transmitter with very small dimensions – ideal for control cabinet installation

Special features

  • Measurement of differential pressure, volume flow or P-/T-compensated volume flow (optional) possible
  • Volume flow can be configured via k-factor, dP max /V max or 20 individual values
  • Scaling, characteristic line form and many other parameters can be set via PC-software (optional)
  • With USB interface
  • 2 floating switching relays (optional)
  • Output signal can be configured 0 .. 10 V or 0/4 .. 20 mA
  • Highly stable measurements thanks to cyclical self-calibration of the zero point
  • Can be calibrated
  • Suitable for top-hat rail mounting in control cabinets
  • Delivery possible already completely integrated into the control cabinet (on request)

The P 34 differential pressure transmitter is designed for pressure monitoring applications in cleanrooms, laboratories, pharmaceutical plants and operating theatres as well as for special uses in machine and plant construction. As well as measuring the differential pressure, the instrument also records positive and negative overpressures as well as flow rates or volumetric flows. The measuring range is scalable in the range from 10 .. 100 %. The transmitter can be configured easily via an USB interface (optional) with software. A selectable time constant allows the transmitter to be adjusted perfectly to the pressure conditions and thus ensures a stable output signal. 


  • The differential pressure transmitter is optionally available with an factory calibration certificate or calibration certificate according to DKD-R 6-1.
  • Two optional contact points allow the user to connect visual or audible alarms that are triggered any time values rise above or fall below specified limits.
  • Optionally with 3, 4 or 6 mm push-on elbow connectors.
  • Delivery possible already completely integrated into the control cabinet.
Measurement ranges
10 / 50 / 100 / 200 / 250 / 500 Pa1 / 2.5 / 5 / 10 / 20 / 50 / 100 kPaFreely scalable from 10..100% within a measurement rangeOthers available upon requestOptional for measurement of P- / T- compensated volume flow
Margin of error (0,3 Pa for the reference)
± 0.2 % of max. value for measurement ranges ≤ 50 kPa± 0.5 % of max. value
Output (signal)
0 .. 10 V (RL ≥ 2 kΩ)0 .. 20 mA (RL ≤ 500 Ω)4 .. 20 mA (RL ≤ 500 kΩ)Output signals can be configured freely
(Data) Interface
USB 2.0 Full-Speed Slave (Mini USB)
Protection class

IP 20

Tubing connectors

Standard for 4 and 6 mm tubing, Threaded elbow connector for 3, 4 or 6 mm tubing (optional)

Contact points
2 relays with floating changeover contacts 230 VAC (50/60 Hz), 6 A (optional)
Power supply
24 VAC/DC, ± 10 %
Technical drawing

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