Delta Controls Pressure Switch, GR2/GR4
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GR2/GR4 Pressure Switch

Brand: Delta Mobrey
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Compact switch range designed for installing in tight spaces such as those found in panel applications.
Features
  • Compact and rugged design
  • Hermetically sealed snap switch UL and CSA listed
  • ATEX - Flameproof CENELEC EEx d IIC option
  • ATEX - Intrinsically Safe ATEX Ex ia IIC option
  • Weatherproof IP66 / NEMA 4
  • Stainless steel body option NEMA 4X rating
  • High over-range models up to psi: 15,000 (kPa: 100,000, bar: 1,000)
  • Ranges available between psi: 4 to 10,000 (kPa: 25 to 70,000, bar: 0.25 to 700)
  • Variety of wetted parts including NACE MR-01-75 compatibility option
  • Optional weatherproof, ATEX EEx e, ATEX Ex ia or ATEX - Flameproof EEx d IIC terminal enclosures
  • Field adjustable
  • Accuracy 1%

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Specifications

Brand

Adjustment Type

  • Field Adjustable

Ambient Temperature Range

  • Operating: -25° to 60° C (-13° to 140° F) - Model GR4 (Ranges U7 to Y4/UK to YF)
  • Operating: -40° to 85° C (-40° to 185° F) - Model GR2 & GR4 (Ranges dB to FA/DK to F6)

Applications

  • Chemical Industry
  • OEM Applications
  • Oil & Gas Applications
  • Petrochemical

Approvals & Certifications

  • ATEX Ex ia IIC
  • CE
  • CENELEC EEx d IIC
  • CSA Class I, Grade A, B, C, D, Class II, Groups E, F, G, Div. 1 & 2
  • Ex II 1 GD, II 2 G
  • IEC Ex
  • NEC 500: Class I, Grade A, B, C, D, Class II Groups E, F, G Div. 1 & 2
  • UL Class I, Grade A, B, C, D, Class II, Groups E, F, G Div. 1 & 2

BSP Connection

  • 1/4” BSPT Female

Cable Length

  • Factory Sealed Flying Lead: 18” (0.45 metres) with 1/2”-14 NPT External Conduit

Conduit Connection

  • 1/2”-14 NPT External
  • M20 x 1.5

Diaphragm Material

  • 316 Stainless Steel
  • Nickel Alloy (Monel)

Electrical - Free Leads

  • Flying Leads: 18 AWG, 1.19 mm²
  • Terminal Enclosures: 14 AWG, 2.5 mm²

Electrical Contacts

  • Gold Alloy
  • Silver
  • Silver Contact with Gold Flash

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: 1 A at 125 Vac
  • UL/CSA: 1 A at 30 Vdc
  • UL/CSA: 11 A at 110/250 Vac
  • UL/CSA: 2 A at 30 Vdc
  • UL/CSA: 5 A at 250 Vac
  • UL/CSA: 5/0.5 A at 30/125 Vdc

Enclosure Finish

  • Epoxy Paint for Aluminum Enclosure

Enclosure, Body Material

  • Aluminum
  • Stainless Steel

Environmental Protection

  • Flameproof
  • Intrinsically Safe
  • IP65
  • IP66
  • NEMA 4
  • NEMA 4X
  • Weatherproof

Mounting

  • 2” Pipe Mounting Bracket

Mounting Position

  • Vertical

NACE & NIST

  • NACE MR-0175

Name Plate, Tag Material

  • Stainless Steel

NPT Connection

  • 1/2”-14 Female NPT
  • 1/2”-14 Male NPT
  • 1/4”-18 Female NPT

Operating Pressure

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

Process Connection Material

  • 316 Stainless Steel
  • Nickel Alloy (Monel)

Repeatability

  • Set Point Repeatability: ± 1 % of Span at 20° C (68° F) Ambient

Seat / Seal Material

  • O-Ring Seal: Nitrile (Buna-N)
  • O-Ring Seal: Viton

Service

  • Oxygen Service

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 Hermetically Sealed & Snap-Action Microswitch
  • SPDT Hermetically Sealed & Snap-Action Microswitch

System Pressure

  • bar: 1,000
  • kPa: 100,000
  • psi: 15,000

Voltage

  • Impulse Withstand Voltage Across Contacts & between Open Contacts: 500 V
  • Impulse Withstand Voltage Across Contacts: 800 V
  • Insulation Voltage UL/CSA: 600 V
  • Insulation Voltage: 125 V
  • Insulation Voltage: 250 V
  • Withstand Voltage: 1.5 kV between Live Parts & Earth/Ground

  • Oil & Gas
  • Chemical
  • Petrochemical
  • OEM

Documentation

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