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The Ashcroft® P-series differential pressure switch was designed for use in hazardous applications where uncompromising protection is required. This switch combines field-proven technology, stability and long cycle life. Its rugged explosion proof housing makes it ideal for satisfying differential pressure control, shutdown or alarm operations in hazardous locations. When two independent setpoints or adjustable deadbands are required.
Unit of Measure

Specifications

Brands

 N/A Ashcroft®

Setpoint

 N/A Single Setpoint, Adjustable Deadband Single Setpoint, Fixed Deadband Dual Independent Setpoint, Fixed Deadband

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 Adjustable

Enclosure Ratings

 N/A National Electrical Manufacturers Association (NEMA) 4X Ingress Protection (IP66)

Enclosure Material

 N/A Epoxy Coated Aluminum

Electrical Termination

 N/A 3/4 in. National Pipe Thread (NPT) Female (Standard)) 3/4 x 1/2 in. National Pipe Thread (NPT) Female Reducing Bushing (Optional)

Ambient Temperature Range

 N/A -20 to 150 ºF-29 to 65 ºC

Pressure Connection

Pressure Connection Size

 N/A 1/4 in. National Pipe Thread (NPT) Female and 1/2 National Pipe Thread (NPT) Male Combination

Pressure Connection (National Pipe Thread (NPT) Female)

 N/A 1/4 in1/2 in

Pressure Ranges

Pressure Ranges

 N/A 30 inH2O differential thru 400 psid

Process Temperature

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

Key Features

Key Features

 N/A
  • National Electrical Manufacturers Association (NEMA) 7 and 9 explosion proof housing
  • Dual chamber design allows for field calibration to be performed safely even with the power connected
  • Wide selection of switch elements
  • Stainless steel, Buna-N®, Fluorocarbon (FKM), Polytetrafluoroethylene (PTFE) and Monel® diaphragms available for compatibility
  • Adjustable setpoints from 15% - 100% of range
  • Fixed or adjustable deadbands
  • UL and CSA hazardous approvals
  • CRN approved
  • RoHS Compliant

Applications

Applications

 N/A Process Market:
Refineries
Chemical and Petrochemical Plants
Water and Sewage Treatment Facilities
Steel Mills

Industrial Market:
Pumps, Compressors and Turbines
Boilers and Burners
Reverse Osmosis Systems