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Wika Model MA Diaphragm Pressure Switch Ex d

Test Product

By using a diaphragm measuring system, the model MA pressure switch is extremely robust and guarantees optimaloperating characteristics. 

For setting ranges from 4 ... 40 bar a piston replaces or completes the diaphragm as a measuring element. The wetted parts of this variant from stainless steel are particularly suited for liquid media.

For applications with special requirements on the wetted parts, versions with materials from PTFE, Monel or Hastelloy are available.

Special features

■ No power supply needed for switching of electrical loads 

■ Robust switch enclosure from aluminium alloy, IP66, NEMA 4X 

■ Setting ranges from 0 ...16 mbar to 0 ... 600 bar, vacuum ranges 

■ Repeatability of the set point ≤ 1 % of span 

■ 1 or 2 independent set points, SPDT or DPDT, high switching power up to AC 250 V, 20 A

Applications

■ Pressure monitoring and control of processes 

■ Safety-critical applications in general process instrumentation, especially in the chemical and petrochemical industries, oil and gas industries, power generation incl. nuclear power plants, water/wastewater industries, mining 

■ For gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive ambience

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