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Wika Miniature Pressure Switch PXS, stainless steel, For the process industry

Part Number : PXS

Brand :
WIKA

The PXS mechanical pressure switch is a compact and durable solution for safety-critical applications in various industries. Constructed from stainless steel 316 with IP66 and NEMA 4X ratings, it handles pressure ranges from 1 to 1,000 bar and operates without external power. With high set point repeatability, versatile contact options, and SIL-2/SIL-3 qualifications, it is ideal for harsh environments and limited-space installations.

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Description

The PXS mechanical pressure switch is engineered for high-demand, safety-critical applications in process instrumentation across multiple industries, including chemical and petrochemical, oil and gas, power generation (including nuclear plants), water/wastewater management, and mining. Its compact design makes it ideal for installations with limited space, such as control panels. The switch is constructed with a robust stainless steel 316 enclosure that meets IP66 and NEMA 4X standards, offering reliable protection against corrosive environments and ensuring durability in challenging conditions. The PXS pressure switch covers a wide pressure range, with adjustable settings from 1–2.5 bar up to 1,000 bar, and delivers a set point repeatability of ? 1% for precise and consistent performance. One of the main advantages of this mechanical switch is its independence from external power, which enhances reliability and minimizes potential failure points. Quality assurance software traces each switch during production, and every unit undergoes 100% testing to ensure performance integrity.

Key features:

Compact, slimline design ideal for installations with limited space Stainless steel 316 enclosure rated IP66 and NEMA 4X for harsh environments Wide pressure range: adjustable from 1–2.5 bar to 1,000 bar High set point repeatability of ? 1% for consistent switching Mechanical operation eliminates the need for external power supply

Pros:

High Reliability: Operates mechanically without reliance on external power, reducing failure risks Versatile Applications: Suitable for various industries and media types, including aggressive or contaminated media Compact Size: Ideal for installations where space is limited

Cons:

Mechanical Response Time: May be slower compared to electronic pressure switches Maintenance Requirements: Mechanical components may need more frequent maintenance in very harsh environments

Downloads

Wika_PXS_Datasheet.pdf

pdf
Download

Wika_PXS_Operating_Instructions.pdf

pdf
Download

Wika_PXS_Technical_Information.pdf

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Download

Specifications

Setting Range:
-1 to 1,000 bar
Set Point Repeatability:
≤ 1%
Operating Principle:
Mechanical (no external power required)
Electrical Load Capacity:
Voltage: AC 250 V Current: 5 A
Switch Types:
Hermetically sealed micro switches (for corrosive environments) Double pole, double throw (DPDT) contacts (for control of two circuits)
Belleville Spring:
Included for enhanced stability and vibration resistance
Safety Compliance:
Available with SIL-2 and SIL-3 qualifications for safety-critical applications
Connection Types:
Various options available for electrical connections
Testing:
100% tested in production, with tracking by quality assurance software at each stage
Enclosure Material:
Stainless steel 316

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