Model PCA

Mechanical pressure switch

Compact version, Ex protection EEx-d, IP 65

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Applications of the mechanical pressure switch

  • Pressure monitoring and direct switching of electrical loads
  • For measuring points with limited space
  • For gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive ambience
  • Process industry: chemical/petro-chemical, on- and offshore, technical gases, environmental technology, machine building and general plant construction, water treatment, pharmaceutical industry
  • Ignition protection type GAS Ex-d DUST Ex-tD Gr. II Cat. 1/2 GD

Special Features of the mechanical pressure switch

  • Case flameproof enclosure
  • Ingress protection IP 65, NEMA 4
  • Ambient temperature -40 ... +85 °C
  • 1 switch point, SPDT or DPDT with a high contact rating of up to 15 A / AC 220 V
  • Setting ranges from 200 mbar, max. test pressure up to 250 bar

Description of the mechanical pressure switch

These high-quality mechanical pressure switches have been specifically developed for safety-critical applications with limited space. High quality and product manufacturing to ISO 9001:2000 ensures reliable monitoring of your plant.

In production, the mechanical pressure switches are traced by quality assurance software at every step and subsequently are 100 % tested.

The gauge adapters are made of stainless steel, the diaphragm is, depending on the measuring range and the sensor code, made of Inconel or coated with NBR or PTFE. Each switch family is available in IP 65, Ex-ia or Ex-d versions (Ex-ia see model PCS, data sheet PV 33.30).

In order to ensure as flexible operation as possible, the mechanical pressure switches are equipped with micro switches, which make it possible to switch an electrical load of up to 15 A / AC 220 V directly.

For smaller contact ratings, such as for PLC applications, argon gas filled micro switches with gold-plated contacts can be selected as an option. For two separate circuits the switches are also available in the version DPDT (double change-over contact).

By using a diaphragm with an antagonist spring, the model PCA mechanical pressure switch is extremely robust and guarantees optimal operating characteristics at very high pressures.

Mechanical pressure switch, switch enclosure aluminium alloy

Mechanical pressure switch, switch enclosure aluminium alloy

  • Mechanical pressure switch, switch enclosure aluminium alloy
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