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The Ashcroft® LD differential pressure switch is designed for applications requiring high reliability, safety and accuracy. Its straight forward design facilitates easy field installation and calibration, making it most suitable for differential pressure control, safety shutdown or alarm operations where two independent set points or adjustable deadbands are required.
Unit of Measure

Specifications

Brands

 N/A Ashcroft®

Setpoint

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

Enclosure Ratings

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

Electrical Termination

 N/A 3/4 in. National Pipe Thread (NPT) Female (Standard)

Ambient Temperature Range

 N/A -20 to 150 ºF-29 to 65 ºC

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

Enclosure Material

 N/A Epoxy Coated Aluminum

Diaphragm/Actuator Material

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

Deadband

 N/A Fixed Adjustable

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

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

Key Features

Key Features

 N/A
  • Designed for easy field installation and wiring of microswitches
  • Ranges from 30 inH2O to 400 Psid
  • 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
  • FM, UL, CSA and CE approved
  • RoHS Compliant

Applications

Applications

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

Industrial Market:
Pumps, Compressors and Turbines
Dairies and Breweries
Boilers and Burners
Reverse Osmosis Systems
Filters and Presses
Paint Spraying Equipment
Specialized OEM Equipment

Medical and Life Sciences Market:
Pharmaceutical Plants