P-W Gauge Pressure Switch from UE Precision Sensors

P-W Gauge Pressure Switch

The P-W Gauge Pressure Switch from UE Precision Sensors is engineered for high-purity gas systems where precision, repeatability, and reliability are critical. Designed to monitor pressure relative to atmospheric conditions, this series delivers consistent switching performance for process control, alarm activation, and equipment protection in demanding environments.

Built with a fully welded construction and high-grade 316L stainless steel wetted components, the P-W series is ideal for industries such as semiconductor manufacturing, clean gas delivery systems, and critical process applications where contamination control and long service life are essential.

Features

P-W Gauge Pressure Switch Features & Benefits

Why Choose the P-W Gauge Pressure Switch?

Engineered for High-Purity Applications

  • Designed specifically for clean gas systems, minimizing contamination risks and ensuring process integrity.

Exceptional Accuracy & Repeatability

  • Utilizes a negative-rate Belleville spring mechanism to deliver stable, repeatable switching performance over time.

Long Operational Life

  • Capable of millions of cycles, reducing maintenance frequency and total cost of ownership.

Tamper-Resistant Factory Settings

  • Prevents unintended adjustment, ensuring consistent operation in critical systems.

Welded, Leak-Tight Desig

  • Eliminates potential leak paths, supporting safe operation in sensitive environments.

Safety Certified (SIL 3 Capable)

  • Suitable for safety instrumented systems where reliability is non-negotiable.

Regulatory Compliance

  • Meets RoHS and REACH standards, supporting global environmental requirements.

Specifications

P-W Gauge Pressure Switch Technical Specifications

 P48WP36WP17W
Available Settings 0.5 PSIG to 5.0 PSIG  2.5 to 30 psig 20 to 100 psig
Deadband 0.5 PSI + 5% of Setting 1.0 psi + 6% of Setting 4.0 psi + 7% of Setting
Repeatability 0.1 PSI + 2% of Setting0.3 psi + 2% of Setting 1.5 psi + 4% of Setting
*Internal Volume2.22 CC 1.06 CC  0.46 CC
**Proof Pressure 0 PSIA 15 PSIG 0 psia 25 psig 0 psia 300 psig
**Operating Temp. Range 0 to 130 F 0 to 130 F 0 to 130 F
Finish 5 Ra5 Ra5 Ra
Wetted Materials 316L per F20 316L per F20 316L per F20
Media Connections1/4 end seal type 1/4 end seal type, 1.125 C Seal1/4 end seal type
Electrical ConnectionsFree Leads or Crimp Type ConnectorsFree Leads or Crimp Type ConnectorsFree Leads or Crimp Type Connectors
Min. Operating Life 5 Million cycles 5 million cycles 1.500,000 cycles
Approvals UL, CE, ISO 13849UL, CE, ISO 13849UL, CE, ISO 13849
Warranty 36 Months 36 Months 36 Months

Applications

P-W Gauge Pressure Switch Applications & Use Cases

Where the P-W Series Excels

Semiconductor Manufacturing

  • Gas cabinet monitoring
  • Process gas delivery systems

High-Purity Gas Systems

  • Specialty gas handling
  • Analytical instrumentation

OEM Equipment Integration

  • Compact footprint for system designers
  • Reliable switching for automated control

Safety & Protection Systems

  • Alarm activation
  • Emergency shutdown (ESD) functions

Q & A

Q&A Section with Expand/Collapse Icons

P-W Gauge Pressure Switch Q & A

+What is a low pressure switching monitor used for?
A low pressure switching monitor is used to measure and control very small pressure differences in systems such as HVAC ducts, cleanrooms, and filtration systems. It triggers alarms or control actions when pressure exceeds predefined limits, ensuring system stability and safety.
+How does the LPS Series prevent false alarms?
The LPS Series includes an adjustable time delay (1–30 seconds), allowing users to filter out short-term pressure fluctuations. This prevents nuisance trips caused by transient spikes or momentary disturbances.
+Can the LPS Series output signals to a control system?
Yes. In addition to switch outputs, the LPS Series offers optional analog outputs (4–20 mA or 0–10 VDC), enabling integration with PLCs, SCADA systems, or building management systems.
 
+What makes the LPS Series different from a traditional pressure switch?
Unlike standard pressure switches, the LPS Series combines digital display, dual alarm switching, and optional analog output in a single device. This reduces the need for separate gauges, transmitters, and switches while improving visibility and control.
+What industries benefit most from low differential pressure monitoring?
Industries that require precise environmental control—such as semiconductor manufacturing, pharmaceuticals, and cleanroom-based processes—benefit most. These applications rely on accurate pressure monitoring to maintain safety, compliance, and product quality.
 


 

Downloads

Download W Series High Purity Pressure Switches for Clean Gas Applications Catalog


Call us today at (855) 737-4714 to learn more or fill out our online form and someone will get back to you.
 

 
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