Differential 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, liquid and aggressive media, also in aggressive ambience
Filter and level monitoring
Special features of the differential pressure switch
No power supply needed for switching of electrical loads
Robust switch enclosure from stainless steel 316L, IP66, NEMA 4X
Setting ranges from 0 ... 16 mbar to 0 ... 40 bar with high static and high one-sided pressure up to 160 bar
Intrinsic safety Ex ia available
1 or 2 independent set points, SPDT or DPDT, high switching power up to AC 250 V, 20 A
Description of the differential pressure switch
These high-quality differential pressure switches have been developed especially for safety-critical applications. The high quality of the products and manufacturing in accordance with ISO 9001 ensure reliable monitoring of your plant. In production, the switches are traced by quality assurance software at every step and subsequently are 100 % tested.
In order to ensure as flexible operation as possible, the differential pressure switches are fitted with micro switches, which enable the switching of an electrical load of up to AC 250 V, 20 A directly.
For lower switching power ratings, such as for PLC applications, argon gas-filled micro switches with gold-plated contacts can be selected as an option.
All wetted materials are from stainless steel as a standard. For applications with special requirements on the wetted parts, a version with Monel® is available.
By using a diaphragm measuring system, the model DW differential pressure switch is extremely robust and guarantees optimal operating characteristics and the highest measuring performances, with repeatability lower than 1 % of span.
The process connection with a centre distance of 54 mm lower mount allows an easy and comfortable mounting of a standard valve manifold.
Solutions for pressure, temperature, force and level measurement, flow measurement, calibration and SF6 gas solutions from WIKA are components integrated in the business processes of our customers.
