The UE Precision Sensors E48W Series Absolute Pressure Switch is engineered for precise, repeatable switching in high-purity gas applications where pressure must be measured against a true vacuum reference. Designed for critical monitoring, control, and safety shutdown systems, the E48W excels in environments where even small atmospheric variations can impact performance.
Unlike gauge-based devices, this absolute pressure switch ensures consistent operation regardless of ambient pressure changes—making it ideal for semiconductor, aerospace, and clean process industries.
Features
Features & Design Advantages
Engineered for Precision and Longevity
The E48W Series incorporates advanced mechanical and material design features to ensure reliable switching performance in high-purity environments.
Core Features:
- Welded stainless-steel construction for leak-tight integrity
- Hermetically sealed switching elements for contamination control
- Tamper-proof factory setpoints to eliminate field misadjustment
- Reverse pressure protection to safeguard internal components
- RoHS-compliant materials for environmental safety
These switches are specifically recommended when fluctuations in atmospheric pressure could negatively impact system performance, ensuring stable and repeatable switching under all conditions.
Specifications
Technical Specifications
Performance You Can Rely On
The E48W Series delivers tight control and repeatability across a range of low-pressure applications.
Key Specifications:
- Pressure Range: 10 to 150 Torr
- Repeatability: ±5 Torr + 2% of setpoint
- Deadband: 20 Torr + 5% of setpoint
- Proof Pressure: 0 psia to 15 psig
- Operating Temperature: 0°F to 130°F
- Wetted Materials: 316L stainless steel (high purity)
- Internal Volume: 2.22 cc
- Cycle Life: Up to 5 million cycles
- Surface Finish: 5 Ra typical
Connection Options:
- 1/4" end seal
- 1.125" C-seal
- NW25 flange
Electrical Options:
- Free leads
- Crimp connectors
- D-sub connections
Certifications:
- UL
- CE
- ISO 13849
Applications
Applications & Industry Use Cases
Where the E48W Series Excels
The E48W Series is widely used in industries where precision pressure control and contamination prevention are critical.
Common Applications:
- Semiconductor fabrication: Gas delivery and vacuum integrity monitoring
- Aerospace systems: Pressure-sensitive instrumentation
- Pharmaceutical processing: Clean gas and sterile environments
- Analytical instrumentation: Stable reference pressure measurement
- Industrial automation: Alarm and shutdown protection systems
Because it references pressure to absolute zero, the E48W is especially valuable in low-pressure and vacuum environments where gauge-based measurements fall short.
Q & A
E48W Series Absolute Pressure Switch Q & A
Downloads
Download Pressure, Flow, Level and Temperature Products Selection Guide
Call us today at (855) 737-4714 to learn more or fill out our online form and someone will get back to you.