-50...65°C - -10...60°C

The Trafag EXPK 944/947/953 ex pressostat electromechanical pressure switches provide high vibration resistance and switch point precision in combination with an extremely robust and durable design. This results in switches that can be operated for decades without requiring maintenance, even under harsh conditions. Various designs with bellows, membrane and piston sensors cover a wide variety of pressure ranges, media and load profiles for many different applications.

The mechanical WIKA PSM-700 pressure switch is designed for control and monitoring applications. The measuring element is a fully welded bellow made of stainless steel 316L. This corrosion-resistant pressure switch is suitable for a broad range of media used in the process industry. The case consists of a high-grade aluminium alloy with which the pressure switch can withstand the harsh operating conditions of the process industry. The WIKA PSM-700 pressure switch is equipped with UL listed micro switches to ensure high endurance with the durable operation and long service life. The WIKA PSM-700 pressure switch has a high switch point repeatability of 0.5 %, which enables reliable switching. Adjustable switch differential to a wide range of up to 60 % of the setting range to realise flexible on/off controls This wide setting range is often needed for the on/off control mode of cyclic applications. The switch point can be specified on site. With the tamper-proofing, which is available as an option, unauthorised adjustment of the switch point can be prevented.