WIKA data sheet PV 33.31 '°r“her approva's' see Process Compact Series Model PCA, compact pressure switch ■ 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 environments ■ For measuring locations with limited space, e.g. control panels Special features ■ No supply voltage needed for the switching of electrical loads ■ Robust switch enclosure from aluminium alloy or stainless steel with identical dimensions, IP66, NEMA 4X ■ Setting ranges from 0.2 ... 1.2 to 200 ... 1,000 bar, vacuum ranges ■ Repeatability of the set point < 1 % of span ■ 1 set point, SPDT or DPDT, high switching power up to AC 250 V, 15 A The pressure switches have been developed especially for safety-critical applications with limited space. 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. The robust switch enclosure from aluminium alloy or stainless steel 316L can withstand the rough and corrosive operating conditions of the process industry with working ranges of up to 1,000 bar. The access to the terminal block for the electrical connection is protected by a screw-on lid, which is secured with a screw-type lock against unauthorised intervention. WIKA data sheet PV 33.31 • 12/2021 A microswitch integrated in the instrument enables the direct switching of an electrical load of up to AC 250 V, 15 A. Depending on the application, the appropriate variant for the contact version and the electrical connection can be selected; e.g., hermetically sealed microswitches are suitable for corrosive ambient conditions and DPDT contact versions for two separate circuits. By using a diaphragm element with antagonist spring as sensor element, the model PCA pressure switch is extremely robust and guarantees optimal operating characteristics. For safety applications, the pressure switch is optionally available in a SIL 2-qualified or a SIL 3-qualified version. ^ Part of your business Data sheets showing similar products: Miniature pressure switch, stainless steel; model PXA; see data sheet PV 34.38 Compact pressure switch; model PCS; see data sheet PV 33.30

WIKA data sheet PV

1) Permissible medium temperature range in the main process line. Depending on the measuring assembly, this may differ from the permissible temperature at the process connection. For further information, see operating instructions. 2) Particularly suited for liquid media. Accuracy specifications Setting range 1) Pressure range that can be applied continuously without causing any damage or shifting the set point. 2) Maximum pressure that the sensor element can withstand without suffering permanent damage. The instrument might have to be calibrated afterwards. 3) The dead band depends on the set...

The set point can be specified by the customer or factory-set within the setting range. The switch point and the switching direction need to be specified (e.g. switch point: 2 bar, rising). The set point is selectable within the entire setting range. For optimal performance we suggest to adjust the set point between 25 ... 75 % of the setting range. In the following example, the maximum possible setting range is shown to be dependent upon the switching direction. Setting range: 0.8 ... 6 bar with one switch contact Dead band = 0.06 bar (see table “Setting ranges” for contact version: A, B, C)...

For approvals and certificates, see website WIKA data sheet PV 33.31 • 12/2021

Grounding screw, outside Terminal block Grounding screw, inside Access cover plate Process connection Electrical connection Adjustment bushing ME For sensor element, see table on page 3 Calibration scale Permissible mounting positions WIKA data sheet PV 33.31 ∙ 12/2021 With affixed lead seal

Accessories and spare parts Model Syphons → See data sheet AC 09.06 Overpressure protector → See data sheet AC 09.04 Needle valve and multiport valve → See data sheet AC 09.22 Block-and-bleed valve → See data sheet AC 09.19 Monoflange, process and instrument version → See data sheet AC 09.17 Ball valve, process and instrument version → See data sheet AC 09.28 © 12/2010 WIKA Alexander Wiegand SE & Co. KG, all rights reserved. The specifications given in this document represent the state of engineering at the time of publishing. We reserve the right to make modifications to the specifications and...