A-Series Miniature Explosion-Proof Pressure Switch

Brand: Ashcroft Inc

The APS and APA pressure switch have NEMA 6, IP 67 Rated 316 stainless steel housing and process connections.

The APS has a factory fixed setpoint which cannot be changed in the field. 

The APA is field adjustable and can easily be adjusted by following the instructions in the diaphragm above.
Features
  • Compact size 
  • 316 stainless steel construction 
  • Pressure ranges from vacuum to psi 15,000 (kPa: 103,400, bar: 1,034) 
  • Field adjustable setpoint or factory set only 
  • Wide operating temperature range -40° to 89° C (-40° to 192.2° F) maximum 
  • Hermetically sealed micro-switch 
  • Precision snap-acting micro switch element 
  • SPDT or DPDT switching 
  • CSA listed 
  • UL listed 
  • FM approved 
  • ATEX & IECEx 
  • SIL 3 capable 
  • CRN 
  • Dual seal rated 
  • CE and ROHS compliant 

Specifications

Approvals & Certifications

  • SIL 3
  • Positive Material Identification
  • 13-ATEX-1123X
  • CE
  • CRN: 14836.5C
  • CSA (C,US): 2454057 (LR55528)
  • FM
  • IEC
  • RoHS
  • SIRA
  • UL: E34743

Switch Type

  • DPDT
  • Micro Switch
  • SPDT

Electrical Rating

  • 3 A at 120 Vac
  • 5 A at 120 Vac
  • General-purpose: 2 A at 30 Vdc
  • General-purpose: 3 A at 125 Vac
  • Gold Contact: 0.1 A at 125 Vac
  • Gold Contact: 0.1 A at 30 Vdc
  • Higher Current Gold Contacts: 0.5 A at 28 Vdc Inductive
  • Higher Current Gold Contacts: 1 A at 125 Vac
  • Higher Current Gold Contacts: 1 A at 28 Vdc Resistive
  • Higher Current: 3 A at 28 Vdc Inductive
  • Higher Current: 5 A at 125 Vac
  • Higher Current: 5 A at 250 Vac
  • Higher Current: 5 A at 28 Vac/dc Resistive

SAE Connection

  • 7/16”-20 SAE Female
  • 7/16”-20 SAE Male
  • 9/16”-18 SAE Female

Piston O-Ring

  • Buna-N

NPT Connection

  • 1/2” NPT Female
  • 1/2” NPT Male
  • 1/4” NPT Female
  • 1/4” NPT Male
  • 1/8” NPT Female
  • 1/8” NPT Male

Vibration

  • Passed MIL-STD-202 G

Enclosure, Body Material

  • 316 Stainless Steel
  • 316L Stainless Steel

Name Plate, Tag Material

  • Stainless Steel

System Pressure

  • bar: -1.034 to 103.4
  • kPa: -103.4 to 103,400
  • psi: -15 to 15,000

Environmental Protection

  • Explosion-proof
  • IP66
  • IP67
  • NEMA 4X
  • NEMA 7
  • NEMA 9

Adjustment Type

  • Set Point Adjustment

Set Point - Increasing

  • bar: -1.034 to 1,034
  • kPa: -103.4 to 103,400
  • psi: -15 to 15,000

Shock

  • 75 G, 10 milliseconds 3 Axis

Accuracy

  • 2 % of Nominal Range

O-Ring Material

  • Buna
  • HNBR
  • Viton

Electrical Contacts

  • Normally Closed
  • Normally Open

Operating Temperature

  • -40° to 100° C (-40° to 212° F)

Diaphragm Material

  • 316L Stainless Steel

Set Point - Decreasing

  • bar: -1.034 to 1,034
  • kPa: -103.4 to 103,400
  • psi: -15 to 15,000

Pressure Type

  • Gauge
  • Vacuum

Tri-Clamp Connection

  • 0.75” Tri-Clamp (Includes 3A Approval)
  • 1-1/2” Tri-Clover (Includes 3A Approval)
  • 2” Tri-Clover (Includes 3-A Approval)

Piston Material

  • 316 Stainless Steel
  • Stainless Steel with Viton

BSP Connection

  • G 1/4” Female
  • G 1/4” Male

Electrical Connectors

  • 1/2” NPT Male Conduit Connection with 18 AWG Wires
  • M20 x 1.5 Male Conduit Connection

Repeatability

  • ± 2 % of Range

  • Industrial Market: Pumps, Turbines & Compressors
  • Industrial Market: Specialized OEM Equipment
  • Offshore Oil Rigs
  • Chemical & Petrochemical
  • Gas Transmission & Distribution Systems
  • Oil & Gas Production Sites
  • Oil Pipelines
  • Refineries
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