Digital pressure switch

Trafag - Electronic Pressure Switch NAH 8254

  • Measuring accuracy 0.3 %
  • Completely welded steel sensor system without additional seals
  • Excellent long-term stability
  • Optional: 5-fold overpressure resistance
  • Switching output 1 or 2 PNP transistors

Electronic Pressure Switch NAH 8254

The miniature pressure switch NAH 8254 is available with 1 or 2 switching outputs (PNP). The maximum switching current of 400 mA in total for both outputs is tolerable within the temperature range of -40 to +85°C. Over the entire temperature range of -40 to +125°C, the maximum switching current is 200 mA in total for both outputs.

The switching outputs include hysteresis and window functions with the options of normally open and normally closed. A delay time is provided for each switching output. For the 2nd switching output, a monitoring mode “Device Ready” is available. In this mode, the output changes state if the device has successfully completed the start-up phase. In case of an error during operation, the status will revert to the normal state.

The standard electrical connection for electronic pressure switches according to VDMA 24574-1 is the built-in M12x1 connector. An accuracy of 0.3% with temperature compensation and linearization is available. The miniature pressure switch is readily available in the pressure range of 0 to 2.5 bar up to 0 to 600 bar.

Technical Data

Measuring range 0…2.5 to 0…600 bar
Pressure connection G1/4” male, etc.
Sensor technology Thin film on steel
Protection rating IP67, IP68
Linearity ±0,3% FS
Connection M12x1
Material 1,4542/630
Output 1 PNP, 2 PNP
Media temperature -40…+125°C
Temperature range -40…+125°C
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