Ultra-Sensitive Vacuum Detection for Low Pressure Monitoring Applications
The PV90S Series Vacuum Switch from UE Precision Sensors is engineered to detect extremely low vacuum levels with high sensitivity and repeatability. Designed for air and inert gas applications, this compact switch uses a precision diaphragm sensing element to monitor pressure changes measured in fractions of an inch of water.
Its low-profile design, simple installation, and reliable switching performance make it an ideal solution for exhaust systems, ventilation monitoring, and other low-pressure control applications.
Features
PV90S Series Vacuum Switch Features and Benefits
- Ultra-Low Pressure Sensitivity: The PV90S uses a silicone-on-silk diaphragm capable of detecting vacuum levels in very small increments, enabling precise monitoring of air or inert gas systems
- Flexible Mounting Options: The switch can be panel-mounted to reduce the need for additional fittings or installed using traditional port connections—offering design flexibility and improved packaging efficiency.
- Simple Electrical Integration: With straightforward electrical connections (quick-connect terminals or flying leads), installation and maintenance are fast and efficient.
- Built for Reliability: Engineered for repeatable performance, the PV90S maintains consistent switching accuracy with minimal drift over time.
The PV90S Series delivers precise vacuum detection in a compact and efficient package:
- Highly sensitive diaphragm technology detects very small pressure changes
- Compact, low-profile design supports tight installation spaces
- Panel mount or port mount flexibility simplifies system integration
- Reliable switching performance for consistent monitoring and control
- Long operational life with up to 1,000,000 cycles
This makes the PV90S an excellent choice for applications where small pressure variations must be accurately monitored.
Specifications
PV90S Series Vacuum Switch Technical Specifications
| Medium Port 1 | Any Gas or Liquid 316L Stainless Steel Compatible |
| Medium Port 2 | Air or Inert Gas |
| Type | Factory Set |
| Available Settings | 20 to 250 mm Hg differential |
| Deadband | 20mm Hg +5% of Setting |
| Repeatability | 5mm + 2% of Setting |
| Proof Pressure (Differential) | 100 PSID |
| Proof Pressure (Both Ports Simultaneously) | 300 psig |
| Operating Temp. Range | 0 to 200 F |
| Finish | Port 1: 10 Ra or Better |
| Wetted Materials | 316L per F20 |
| Media Connections | Port 1: 1/4 Male End Seal Port 2: 1/4 Barb fitting, 1/4 Male End Seal |
| Electrical Connections | Free Leads Crimp Type Connectors |
| Min. Operating Life | 1,000,000 cycles |
| Warranty | 36 months |
| Options | Custom Fittings, Panel Mount |
Applications
PV90S Series Vacuum Switch Applications & Use Cases
The PV90S Series Vacuum Switch is designed for applications requiring precise detection of low vacuum levels:
- Exhaust and ventilation system monitoring
- Airflow verification in HVAC systems
- Vacuum line and pump monitoring
- Process control in light industrial environments
- Safety interlocks for low-pressure systems
Its sensitivity and compact design make it particularly effective in systems where space is limited and precision is critical.
Q & A
PV90S Series Vacuum Switch Q & A
It is commonly used in exhaust systems, HVAC airflow monitoring, and vacuum line applications, where detecting small pressure changes is essential for proper system operation.
Downloads
Download Pressure, Flow, Level & Temperature Products Safety and Process Control Sensors Brochure
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