Dwyer ADPS Adjustable Low Differential Pressure Switch

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Adjustable differential pressure switch for air and non-combustible gases. Designed for pressure, vacuum, and differential pressures in ranges from 0.08" to 20" WC. PA 6.6 body with silicone diaphragm.

See model selection chart below.

Typical applications include monitoring air filters and ventilators, industrial cooling air circuit, flows in ventilation ducts, overheating protection for fan heaters, controlling air and fire-protection dampers, and frost protection for heat exchangers.

  • Dual scale adjustment knob displays inches of water column and pascals, makes switching pressure easily with a pressure gage reducing components for application
  • Relay contact allows simple integration with DDC or building systems
  • SPDT switch output
  • NEMA 3/IP54 polystyrene cover, PA 6.6 body, POM housing, and silicone diaphragm
  • Push-on screw terminal electrical connections, M20 process connection

Model Selection Guide

Use this table to find the right model for your application.  Also available with 1/2" NPT process connections. Don't see the option you need? Call a Lesman sales specialist at 800-953-7626.

Measuring RangeClick for Price
and Availability
0.08" to 1.20" WCADPS-08-2-N
0.12" to 1.60" WCADPS-04-2-N
0.20" to 2.00" WCADPS-03-2-N
0.80" to 4.00" WCADPS-05-2-N
2.00" to 10.00" WCADPS-06-2-N
4.00" to 20.00" WCADPS-07-2-N
4" 303 SS straight static pressure tip A-489
Plastic static pressure tip A-480
Installer kit (2 static pressure tips and PVC tubing) A-481
L-type metal mounting bracket A-288
1/2" conduit fitting adapter A-483
More Information
Measured Variable Differential Pressure
Enclosure/Construction IP54
Switch Output SPDT
Sensor Type Diaphragm
Adjustment Reference Scale/Dial
Measuring Range 0.08" to 20" WC
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