Series 1700 Low Differential Pressure Switch

Brand: Dwyer Instruments, LLC

This product is no longer available, please contact Tech Support for a suggested replacement product.

Series 1700 Differential Pressure Switches were specifically designed to satisfy the demands of high volume original equipment manufacturers for a tough, dependable limit switch at a very low price.

The Model 1710 uses Dwyer's simple, time-proven method of mechanically coupling a sensitive 3" diameter silicone rubber diaphragm to a versatile SPDT snap switch.

The switch housing is precision molded of a high strength glass filled PPO which has excellent dimensional and thermal stability.

This unique combination of existing and new technologies enables Dwyer to offer a limit switch priced less than comparable units without sacrificing performance.

Installation is fast and simple with twist and tighten mounting screw slots, 1/4" quick connect electrical terminals and dual size barbed pressure ports for 1/8" and 3/16" ID vinyl or rubber tubing. For use with air and other non-combustible, non-corrosive gases, switches are UL and CSA recognized.

Two models are offered with field adjustable ranges from 0.15 to 0.55" w.c. and 0.50 to 7.5" w.c. Units are rated for 2 psig maximum system pressure, temperature limit is 190° F and weight is only 4 oz.


Adjustment Type

  • Factory Set (Pre-Set)
  • Field Adjustable


  • Duct Pressure Monitor
  • Engine Diagnostic Equipment
  • High Efficiency Furnaces
  • Laboratory Fume Hoods
  • Monitor Air Filter Condition

Approvals & Certifications

  • CSA
  • RoHS
  • UL

Deadband, Approximate - Bottom of Range

  • Inch WC: 0.03 to 0.10

Deadband, Approximate - Top of Range

  • Inches WC: 0.06 to 0.50

Diaphragm Material

  • Buna-N
  • Fluoroelastomer
  • Fluorosilicone
  • Silicone

Electrical Connectors

  • 1/4” Quick Connect

Electrical Rating

  • 5 A, 125, 250, 277 Vac, 1/10 hp 250 Vac, 150 VA

Enclosure, Body Material

  • Glass-Filled PBT


  • Diaphragm in Vertical Position

Operating Temperature

  • 88° C (190° F) - Max.

Set Point - Decreasing

  • Inches WC: 0.15 to 15

Set Point - Increasing

  • Inches WC: 0.15 to 15

Switch Type

  • SPDT

System Pressure

  • bar: 0.13
  • kPa: 13.7
  • psig: 2

Tube Connection

  • 1/8” I.D. Tube
  • 3/16” LD Tube
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