Differential pressure measurement with P34

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P34 Differential pressure transmitter for control cabinet installation

Product Description

The differential pressure transmitter P 34 is particularly suitable for pressure monitoring in clean rooms, laboratories, pharmaceutical plants, operating theaters as well as for special applications in machine and plant construction. In addition to the differential pressure, the device also detects positive and negative overpressure as well as flow velocity or volume flow.
The measuring ranges are scalable in the range of 10 .. 100%. Two optional switch contacts enable the connection of optical or acoustic alarm devices when limit values ​​are exceeded or fallen below. The transmitter can be easily configured with software via a USB interface. A selectable time constant allows the transmitter to be optimally adapted to the pressure conditions and thus ensures a stable output signal. The P 34 is ideal for top hat rail mounting.

Special properties

  • Measurement of differential pressure, volume flow or P- / T-compensated volume flow (optional) possible
  • Volume flow can be configured via k-factor, dPmax / Vmax or 20 individual values
  • Parameterization of scaling, characteristic curve shape and much more single PC (optional)
  • With USB interface
  • 2 potential-free changeover relays (optional)
  • Selectable output signal 0 .. 10 V or 0/4 .. 20 mA
  • High accuracy and long-term stability through automatic zero point adjustment
  • Calibratable
  • Suitable for top hat rail mounting in the control cabinet



Technical Specification

Measuring ranges
10/50/100/250/500 Pa
1 / 2.5 / 5/10/20/50/100 kPa
freely scalable from 10 .. 100% within a measuring range
(others on request)
Optionally also for measuring P- / T-compensated volume flow

Measurement uncertainty
± 0.2% or ± 0.5% of the scaled range (40 .. 100% F.S., at least 0.3 Pa)

Exit (rad. / Lin.)
0 .. 10 V (RL ≥ 2 kΩ)
0 .. 20 mA (RL≤ 500 Ω)
4 .. 20 mA (RL≤ 500 Ω)
(Output signals freely configurable)

24 VAC / DC, ± 10%

Input and Output
USB 2.0 full-speed slave (Mini USB)