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The Ashcroft® NPA Watertight pressure switch was designed to satisfy challenging applications requiring high cycle life with high current switch functionality. This design incorporates a transducer that uses proven thin film technology to trigger a high quality relay, making this an extremely repeatable, reliable and long lasting switch. This switch is ideal for use with pressure control, shutdown or alarm operations.
Unit of Measure

Specifications

Brands

 N/A Ashcroft®

Accuracy

 N/A ±1% of Full Span

Setpoint

 N/A Single Setpoint

Enclosure Material

 N/A Epoxy Coated Aluminum

Diaphragm/Actuator Material

 N/A 17-4PH Stainless Steel

Process Temperature

 N/A -20 to 160 ºF-29 to 73 ºC

Setpoint Repeatability (Accuracy)

 N/A ± 0.50% Full Scale

Deadband

 N/A Adjustable

Society of Automotive Engineers (SAE4) Female Pressure Connection Size

 N/A 7/16-20

Switch Output

 N/A Single Pole Double Throw (SPDT) Single Pole Double Throw (SPDT) 10 amp Relay Optional 4 to20 mA output (requires isolated 24 Vdc power supply)

Enclosure Ratings

 N/A National Electrical Manufacturers Association (NEMA) 3, 4, 4X and 13 (Ingress Protection (IP) 65)

Electrical Termination

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

Ambient Temperature Range

 N/A -20 to 160 ºF-29 to 73 ºC

Pressure Connection

Pressure Connection Size

 N/A 1/4 in. AMNICO® Female

Pressure Connection (National Pipe Thread (NPT) Male)

 N/A 1/8 in1/4 in1/2 in

Pressure Connection (National Pipe Thread (NPT) Female)

 N/A 1/8 in1/4 in1/2 in

Pressure Ranges

Pressure Ranges

 N/A 60 thru 20,000 psi psi

Gauge Function

 N/A Vacuum Pressure

Key Features

Key Features

 N/A
  • Pressure ranges up to 20,000 psi
  • Incorporates Ashcroft®'s thin film sensing technology which provides repeatability and durability
  • Multi-turn potentiometers allow easy setpoint and deadband adjustments
  • Relay switch status indication light
  • SPDT 10 amp relay with optional 4 to 20 mA output
  • Designed for high cycle life ≥ 10 million cycles
  • CRN approved

Applications

Applications

 N/A Process Market:
Pipelines

Industrial Market:
Machine Tools
Injection Molding Machines
Presses
Pumps
Turbines and Compressors
Specialized OEM Equipment

Process Applications:
Hydraulic Systems