D56M Series Differential Pressure Switch

The D56M differential pressure switch provides high precision measurement across a wide range of low-differential pressure conditions in a package smaller than other units of comparable capability. The membrane senses changes between the “high” and “low” pressure inlets while offering excellent repeatability and high cycle life. Optional hermetically sealed contacts mean the D56M can be well suited when vapor ignition is a concern.

Typical uses include airflow control plenums.

For a similar switch with a higher resistance to shock and vibration, refer to the D16M

For qualification information, please consult the sales or engineering departments.

Features

  • Intended for gaseous media
  • Environmentally sealed with optional hermetically sealed contacts
  • Proven diaphragm and leaf spring technology for high cycle life

Specifications *

Available settings 0.3 to 6.0 psid
Repeatability 0.05 psid + 3% of setting
Deadband 0.2 psid + 5% of setting
Case proof pressure 30 psig
Differential proof pressure 20 psid
Operating temperature range -65 to 160°F
Typical weight 0.4 lbm standard configuration
Electrical rating 7 Amps max. at 28 VDC
Switch configuration SPST, SPDT
Pressure connections
  • AS4395 (MS33656)
  • AS5202 (MS33649)
  • Female NPT
  • Custom fittings available upon request
Electrical connections
  • Free leads
  • MIL-DTL-26482 receptacle
  • MIL-DTL-5015 receptacle
  • Custom electrical connections available upon request
Warranty 18 months

* Specifications subject to change

Downloadable Resources

Selection Guide

Pressure, Flow and Liquid Level Products for Aerospace and Millitary Uses

Aerospace Guide

Pressure, Flow, Level and Temperature Sensors MIL. AEROSPACE
Ask an Engineer