Description
Dwyer 1638-10 Large Diaphragm Pressure Switch Overview
The Dwyer 1638-10 is a reliable, field-proven pressure switch engineered for HVAC, industrial, and commercial applications where accurate differential pressure monitoring is essential. Featuring a large diaphragm sensing element, this switch delivers consistent, repeatable performance across a wide setpoint range, making it an ideal solution for monitoring air pressure and non-combustible gas systems.
Key Features
- Large diaphragm design for enhanced sensitivity and accurate pressure detection
- Adjustable setpoint range: 3″ w.c. to 12″ w.c.
- Approximate deadband: 0.11″ w.c. to 0.30″ w.c.
- SPDT (Single-Pole, Double-Throw) switch action for versatile circuit control
- Compatible with air and non-combustible gases
- 1/8″ Female NPT pressure connection for easy installation
- Compact, durable housing suitable for a wide range of mounting configurations
Specifications
- Model: 1638-10
- Brand: Dwyer Instruments
- Setpoint Range: 3″ w.c. to 12″ w.c.
- Approximate Deadband: 0.11″ to 0.30″ w.c.
- Switch Type: SPDT
- Media: Air and Non-Combustible Gases
- Port Connection: 1/8″ Female NPT
- Sensing Element: Large Diaphragm
Applications
- Air handler and duct static pressure monitoring
- Filter status and differential pressure indication
- Fan and blower proof-of-operation verification
- Non-combustible gas pressure monitoring in HVAC and light commercial systems
- Building automation and control system integration
Why Choose the Dwyer 1638-10?
Dwyer Instruments has been a trusted name in pressure measurement and control for decades. The 1638-10 combines rugged construction with precise switching performance, offering HVAC professionals a dependable solution for pressure-critical applications. The large diaphragm sensing element ensures reliable actuation even at lower pressure differentials, while the SPDT output provides flexibility for both normally-open and normally-closed circuit configurations.
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