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901..Ex ATEX Approved Factory Set Pressure switch

Introducing our advanced Pressure Switch Monitor, designed for precise monitoring of overpressure, vacuum, or differential pressure in both liquid and gaseous media, even aggressive ones. With factory-set pressure settings and switching differential, you can rely on accurate performance from the moment it’s installed. For applications requiring temperature resistance above 85°C, we offer metal or PPS pressure connections. Furthermore, we are committed to customisation, providing pressure connections of different sizes, other plastics, or brass nickel-plated options upon request. Ensure optimal safety and efficiency in your operations with our reliable and adaptable Pressure Switch Monitor.

Pressure Switch 901 Product Parameters

  • Pressure Ranges: Designed for monitoring overpressure, vacuum, or differential pressure of liquid and gaseous media, including aggressive types.
  • Accuracy: Pressure setting and switching differential are factory-set by the manufacturer.
  • Electrical Connections: Options include a tab terminal 6.3 mm x 0.8 mm in accordance with DIN 46244 or push-on screw terminals.
  • Media Compatibility: Suitable for a wide range of media with diaphragm materials like NBR, Silicone, FKM, EPDM, and specific types like Silicone for 901.30Ex.
  • Special Features: Operates in a temperature range from –20°C to +85°C, has a mechanical life of more than 10^6 cycles, and offers protection levels of IP54/IP65 with the appropriate protection cap.


Product Highlights

The Pressure Switch 901 EX is a versatile industrial solution with factory-set switching points and maximum positive working pressures. The models 901.1x Ex, 901.2x Ex, 901.41Ex, and 901.51Ex offer switching points ranging from 5 mbar to 12 bar, and maximum positive working pressures from 0.5 to 25 bar. It can handle temperatures from -20°C to 85°C for both media and ambient conditions. The diaphragm material options include NBR, Silicone, FKM (Viton®), and EPDM, making it compatible with various media types. The pressure connection materials are PA, PVDF, Brass, and Stainless Steel, and it can be fitted with hose nipples of 5.0mm, 6.5mm, or 10.0mm, as well as threads like M10x1, G1/8, G1/4, and G1/2. The electrical rating is 24 VDC/100 mA or 30 VDC/45 mA, with either AMP flat plug or push-on screw terminals for electrical connection. The Pressure Switch 901 EX boasts IP 54 protection class (with cover 6371), ensuring reliability in diverse environments.


  • Wastewater technology
  • Liquid level measurement
  • Pump control
  • Medical technology
To download the latest datasheet click here: Pressure Switch 901 EX

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