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VM2/VM4 Pressure Switch

Brand: Delta Mobrey

Features
  • Compact and rugged design
  • ATEX Flameproof EExd IIC 2 GD
  • Stainless steel enclosure as standard
  • All-welded construction for process connection and diaphragm - reduced risk of leakage under extreme conditions
  • Ranges available between psi: 4 (kPa: 25, bar: 0.25) and psi: 10,000 (kPa: 70,000, bar: 700)
  • Variety of wetted parts including NACE MR-01-75 compatible option
  • Field adjustable set point

Specifications

Brand

Adjustment Type

  • Field Adjustable Set Point

Ambient Temperature Range

  • -25° to 60° C (-13° to 140° F) - Model VM4 (Limited by Materials used in Sensing Element)
  • -40° to 80° C (-40° to 176° F) - Model VM2 (Intermittently down to -60° C (-76° F) - ATEX)
  • -40° to 85° C (-40° to 185° F) - Model VM2 (For Weatherproof Version)

Applications

  • Fuel & Lubrication Systems as Found on Gas Turbines, Compressors & Other Rotating Machinery
  • Valve Actuators
  • Water or Gas Deluge Fire Protection Systems
  • Wellhead Control Safety Shutdown Systems

Approvals & Certifications

  • UKAS
  • ATEX Directive 94/9/EC
  • BSI Kitemark
  • CE
  • CSA
  • EMC 89/336/EEC
  • ISO 9001
  • LVD 73/23/EC Amended by 93/68/EEC
  • MSD 89/392/EEC
  • PED 97/23/EC
  • UL

BSP Connection

  • 1/4” BSPT Female

Cable Entry

  • 1/2” NPT Female
  • M20 x 1.5

Diaphragm Material

  • 316 Stainless Steel
  • Nickel Alloy (Monel)

Electrical - Free Leads

  • 14 AWG, 2.5 mm²

Electrical Connectors

  • Terminal Strip

Electrical Contacts

  • Gold Alloy

Electrical Rating

  • IEC 947-5-1 / EN 60947-5-1: 0.22 / 0.1 A at 125/250 Vdc
  • IEC 947-5-1 / EN 60947-5-1: 0.3 A at 120 Vac
  • IEC 947-5-1 / EN 60947-5-1: 0.6 / 0.3 A at 120/240 Vac
  • UL & CSA: 0.1 A at 30 Vdc
  • UL & CSA: 1 A at 125 Vac
  • UL & CSA: 2 A at 30 Vdc
  • UL & CSA: 5 A at 110/250 Vac

Enclosure, Body Material

  • Stainless Steel

Environmental Protection

  • Flameproof EEx IIC 2 GD
  • Intrinsically Safe
  • IP66
  • NEMA 4X
  • Weatherproof

Mounting

  • Via 2 Integral Cast Lugs with Holes to Suit M5 Screws

NACE & NIST

  • NACE MR-0175

Name Plate, Tag Material

  • Stainless Steel

NPT Connection

  • 1/4”-18 NPT Female

Operating Pressure

  • psi: 0 to 15,000 (kPa: 0 to 100,000, bar: 0 to 1,000) - Max.

Process Connection Material

  • 316 Stainless Steel
  • Nickel Alloy (Monel)

Repeatability

  • Set Point Repeatability: ± 1 % of Adjustable Range

Set Point - Decreasing

  • bar: 0.25 to 700
  • kPa: 25 to 70,000
  • psi: 4 to 10,000

Set Point - Increasing

  • bar: 0.25 to 700
  • kPa: 25 to 70,000
  • psi: 4 to 10,000

Switch Type

  • DPDT
  • SPDT

System Pressure

  • bar: 1034
  • kPa: 103,400
  • psi: 15,000

Voltage

  • Impulse to Withstand Voltage Across Contacts: 0.8 kV
  • Impulse to Withstand Voltage Across Contacts: 500 V
  • Insulation Voltage: 125 V
  • Insulation Voltage: 250 V

  • Wellhead control safety shutdown systems
  • Water or gas deluge fire protection systems
  • Fuel and lubrication systems, as found on gas turbines, compressors and other rotating machinery
  • Valve Actuators

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