Description
Dwyer ADPS-04-2-N Differential Pressure Switch Overview
The Dwyer ADPS-04-2-N is a precision differential pressure switch engineered for reliable performance in air and non-combustible gas applications. With a sensing range of .12″ to 1.6″ W.C. (water column), this switch delivers accurate, repeatable switching action for HVAC systems, building automation, and industrial process control. Its SPDT (Single-Pole, Double-Throw) output provides both normally open and normally closed circuit options, giving installers maximum wiring flexibility.
Key Features
- Differential pressure sensing range: .12″ to 1.6″ W.C.
- Compatible with air and non-combustible gas media
- SPDT (Single-Pole, Double-Throw) switching output
- 5/16″ O.D. tubing connection (accepts 1/4″ I.D. tubing)
- Vertical mounting orientation for easy panel or duct installation
- Compact, durable housing suited for commercial and light industrial environments
Application & Benefits
The ADPS-04-2-N is ideal for monitoring filter status, fan operation, airflow proving, and duct pressure control in HVAC systems. The SPDT contact configuration allows it to serve as both a normally open and normally closed switch, accommodating a wide variety of control circuit designs. The 5/16″ O.D. (1/4″ I.D.) tubing connection ensures compatibility with standard pneumatic tubing commonly found in HVAC and building automation installations.
Installation Notes
- Designed for vertical mounting — ensure proper orientation during installation
- Connect sensing tubing to high- and low-pressure ports as required by application
- Suitable for air and non-combustible gas service only — do not use with combustible gases or liquids
- Verify setpoint and wiring configuration before energizing the circuit
Why Choose Dwyer?
Dwyer Instruments is a trusted name in pressure measurement and control, known for producing reliable, field-proven sensing products. The ADPS Series differential pressure switches are designed to meet the demanding requirements of commercial HVAC and building automation professionals.
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