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The Ashcroft® D7 National Electrical Manufacturers Association (NEMA) 7/9 differential pressure switch is designed for applications requiring safety, reliability and long-cycle life. It is ideal for satisfying requirements for differential pressure control, shutdown or alarm operations in hazardous locations.
Unit of Measure

Specifications

Brands

 N/A Ashcroft®

Setpoint

 N/A Single Setpoint - Factory Set or Field Adjustable

Setpoint Repeatability (Accuracy)

 N/A ± 1% of Span (Additional setpoint shift of ± 1% of range per 50 ºF from initial setpoint set at 70 ºF typical)

Diaphragm/Actuator Material

 N/A Buna-N® Polytetrafluoroethylene (PTFE) Fluorocarbon (FKM) 316L Stainless Steel Monel®

Deadband

 N/A Fixed Limited Adjustable

Enclosure Ratings

 N/A National Electrical Manufacturers Association (NEMA) 7/9 Ingress Protection (IP66)

Enclosure Material

 N/A 316 Stainless Steel Epoxy Coated Aluminum

Pressure Connection (National Pipe Thread (NPT) Female (Standard))

 N/A 1/2 in

Electrical Termination

 N/A 1/2 in. National Pipe Thread (NPT) Female M20 x 1.5 (Optional)

Ambient Temperature Range

 N/A -20 to 150 ºF-29 to 65 ºC

Process Temperature (Buna-N® or Polytetrafluoroethylene (PTFE) Diaphragm)

 N/A 0 to 150 ºF

Process Temperature (Stainless Steel or Monel® Diaphragm)

 N/A 0 to 300 ºF

Process Temperature (Fluorocarbon (FKM) Diaphragm)

 N/A 20 to 300 ºF

Pressure Ranges

Pressure Ranges

 N/A 30 inH2O differential thru 600 psid

Key Features

Key Features

 N/A
  • Adjustable setpoint from 15% -100% of range
  • Explosion-proof enclosure provides uncompromised protection
  • Fixed or limited adjustable deadband
  • Wide selection of switch element and wetted materials
  • External locking screw (ATEX/IECEx approval only)
  • Ranges from 30 in. H2O to 600 PSID
  • UL, CSA, ATEX, IECEx hazardous approvals
  • FM, CE and CRN approved
  • SIL 3 capable
  • RoHS Compliant
    •

    Applications

    Applications

    		 N/A Process Market:
    Offshore Oil Rigs
    Chemical and Petrochemical Plants
    Pulp and Paper Mills
    Power Plants
    Steel Mills
    Water and Sewage Treatment Facilities

    Industrial Market:
    Pumps, Compressors and Turbines
    Washers and Filters
    Degreasers and Evaporators
    Recovery Systems
    Reverse Osmosis Systems/Filters
    Food Processing
    Ground Support Equipment
    Hydraulic and Lubrication Systems
    Heating and Air Conditioning
    Marine Equipment
    Specialized OEM Equipment