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Differential pressure transmitter

PS 27

 
 
 
 

Compact differential pressure transmitter for basic applications



 

Compact differential pressure transmitter for positive or negative differential pressures in basic applications

Special features

  • Suitable for top-hat rail mountingand wall surface installation 
  • Selectable output signal 0/2 .. 10 V, 0/4 .. 20 mA or 0 .. 5 V
  • Selectable attenuation of the output signal of up to 4 s (optional)
  • Display (optional)
  • Can be calibrated
  • Zero-point calibration via an external signal reduces maintenance costs
  • The adjustable limit switch permits the connection of, e.g. ventilators or signalling devices, and saves additional wiring (optional)

This compact differential pressure transmitter is particularly suited to filter and pressure monitoring applications in the heating, air-conditioning and ventilation industries. An optional display allows measurement values to be read directly on-site in Pa or kPa. An optional time constant (up to 4s) allows the instrument to generate an attenuated output signal, even under fluctuating pressure conditions. To reduce wiring costs, the instrument is also available in a version with two-wire technology (optional). The PS 27 can be mounted either on a wall or on top-hat rails. The instrument is available with an ISO factory calibration or DAkkS calibration certificate (optional).

Measurement ranges
50 / 100 / 200 / 500 Pa
1 / 2.5 / 5 / 10 / 20 / 50 / 100 kPa
(others available upon request)

optional:
toggles between: 100 Pa / 250 Pa / 500 Pa / 1000 Pa
toggles between: 250 Pa / 500 Pa / 1000 Pa / 2000 Pa
toggles between: 1 kPa / 2.5 kPa / 5 kPa / 10 kPa
toggles between: 10 kPa / 25 kPa / 50 kPa / 100 kPa

Margin of error
± 2 % of the set value for ≥ 100 Pa or
± 3 % of the set value for 50 Pa
(0.3 Pa margin of error for the reference)

Output
0 .. 10 V (R L ≥ 50 kΩ)
2 .. 10 V (R L ≥ 50 kΩ)
0 .. 20 mA (R L ≤ 500 Ω)
4 .. 20 mA (R L ≤ 500 Ω)
0 .. 5 V (R L ≥ 50 kΩ)
(the output signal can be configured using DIP switches)

Power supply
24 VAC/DC, ± 10 % (without galvanic separation)
15 .. 32 VDC (two-wire) (only for 4 .. 20 mA Output)

Contact point (optional, not for two-wire)
1 relay (changeover contacts) max. 230 V AC, 6 A
(min. required switching capacity 300 mW)

Display (optional)
4-digit

The instrument is available with an ISO factory calibration or DAkkS calibration certificate (optional).