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A-Series Explosion-Proof Pressure Switch

Brand: Ashcroft Inc

The Ashcroft® APA and APS explosion proof miniature pressure switches are designed for pressure control within harsh applications. 

The explosion-proof construction provides superior protection, while its compact design allows for easy integration into custom equipment or systems. 

This model is ideal for pressure alarm, shutdown or control within hazardous areas when limited size and process compatibility are needed. 

Specifications:
  • Accuracy: ±2.00% full scale 
  • NEMA 4, 7 and 9 (IP67); 316 stainless steel 
  • SPDT or DPDT switching models 
  • Pressure ranges: vacuum to 7,500 psi 
Features
  • Compact, 316 stainless steel construction 
  • Explosion-proof housing provides uncompromising protection 
  • Wide operating temperature (-40° to 89° C) 
  • Factory set or field adjustable setpoint 

Specifications

Brand

Adjustment Type

  • Factory Set (Pre-Set)
  • Field Adjustable

Approvals & Certifications

  • ATEX
  • CE
  • CRN
  • CSA
  • Dual Seal
  • FM
  • IEC Ex
  • RoHS
  • SIL
  • UL

Burst Pressure

  • bar: 655 to 3,500
  • kPa: 65,500 to 350,000
  • psi: 9,500 to 50,000

Deadband, Approximate

  • bar: 0.07 to 2.0
  • bar: 0.2 to 75
  • kPa: 20 to 7,500
  • kPa: 7 to 200
  • psig: 1 to 30
  • psig: 3 to 1,100

Diaphragm Material

  • Stainless Steel

Electrical - Free Leads

  • 18 AWG Wire Leads

Electrical Connectors

  • 1/2” NPT

Electrical Rating

  • 2 A at 30 Vdc
  • 5 A at 28 Vac
  • 5 A or 3 A at 120 Vac

Enclosure, Body Material

  • 316L Stainless Steel

NPT Connection

  • 1/4” NPT Female
  • 1/4” NPT Male
  • 1/8” NPT Female

Operating Temperature

  • -40° to 90° C (-40° to 194° F)

Pressure Cycles

  • > 1 Million

Pressure Range

  • bar: 1.03 to 13.8
  • bar: 7 to 500
  • kPa: 103.4 to 1,379
  • kPa: 700 to 50,000
  • psig: 100 to 7,500
  • psig: 15 to 200

Proof Pressure

  • bar: 70 to 1,000
  • kPa: 7,000 to 100,000
  • psig: 1,000 to 15,000

Repeatability

  • ± 2 % of Range

SAE Connection

  • 7/16”-20 SAE Male

Set Point - Decreasing

  • bar: -1 to 500
  • kPa: -100 to 50,000
  • psi: -15 to 7,500

Set Point - Increasing

  • bar: -1 to 500
  • kPa: -100 to 50,000
  • psi: -15 to 7,500

Shock

  • 75 G, 10 milliseconds 3 Axis

Switch Type

  • DPDT: 5 A or 3 A 120 Vac, 2A @ 30 Vdc, 5 A @ 28 Vac
  • SPDT: 5 A or 3 A 120 Vac, 2A @ 30 Vdc, 5 A @ 28 Vac

System Pressure

  • bar: 55 to 700
  • kPa: 5,500 to 70,000
  • psig: 800 to 10,000

Tri-Clamp Connection

  • 1-1/2” Tri-Clover
  • 2” Tri-Clover
  • 3/4” Tri-Clamp

VCR / VCO Connection

  • VCO
  • VCR

Vibration

  • Passed MIL-STD-202 G

  • Gas Transmission & Distribution
  • Offshore Platforms, Pipelines
  • Oil & Gas Drilling
  • Process Applications
  • Refining, Chemical, Petrochemical
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