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Delta Controls Pressure Switch, 231/232/233/234

231/232/233/234 Pressure Switch

Brand: Delta Mobrey
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The model 231/232/233/234 Performance Series pressure switches utilise bourdon tube type sensor that offer a very linear response to pressure change.
Features
  • Precision stainless steel mechanism for arduous atmospheres and high humidity
  • Set point adjustable over the whole range against calibrated scale with tamperproof adjuster
  • Weatherproof and Flameproof models ATEX and IEC Ex
  • Safety vented design as standard
  • NACE MR-01-75 compatibility
  • Hermetically sealed microswitch option
  • Models for fixed switching differential, adjustable differential and HI-LO operation
  • Ranges available up to psi: 8,500 (kPa: 60,000, bar: 600)
  • Static Pressure up to psi: 10,000 (kPa: 69,000, bar: 690)

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Specifications

Brand

Accuracy

  • Scale Accuracy: ± 3 % of Full Scale

Adjustment Type

  • Screw
  • Set Point Field Adjustable

Ambient Temperature Range

  • -25° to 60° C (-13° to 140° F)

Applications

  • Chemical Industry
  • Food Industry
  • Oil & Gas Applications
  • Petrochemical
  • Power
  • Refining

Approvals & Certifications

  • ATEX EN 60079-0, EN 60079-1, EN 60079-31
  • ATEX Ex db IIC T4 to T6, Flameproof
  • CE
  • CSA
  • Ex II 2 GD, II 3 GD
  • IEC Ex: Ex db IIC T4 & T6 Gb
  • LVD 2014/35/EU
  • PED 97/23/EC

BSP Connection

  • 1/4” BSP Female
  • 1/4” BSPT Female

Cable Entry

  • Cable Gland & Back Nut: M20
  • M20 x 1.5

Conduit Connection

  • 3/4” Conduit

Electrical - Free Leads

  • 14 AWG, 2.5 mm²

Electrical Connectors

  • Terminal Block

Electrical Contacts

  • Gold Alloy Contacts for Low Voltage Switching
  • Gold-Plated Silver

Electrical Rating

  • CSA & IEC: 1 A at 125 Vac - Models 231 & 234
  • CSA: 1 A at 30 Vac/dc - Models 231 & 234
  • CSA: 100 mA at 30 Vdc - Models 231 & 234
  • CSA: 2 A at 30 Vdc - Models 231, 232, 233 & 234
  • CSA: 5 A at 110/250 Vac - Models 231, 232, 233 & 234
  • CSA: 5 A at 30 Vdc - Models 231 & 234
  • IEC 947-5-1 / EN 60947-5-1: 0.22 / 0.1 A at 125/250 Vdc - Models 231, 232, 233 & 234
  • IEC 947-5-1 / EN 60947-5-1: 0.3 A at 120 Vac - Models 231 & 234
  • IEC 947-5-1 / EN 60947-5-1: 0.6 / 0.3 A at 120/240 Vac - Models 231, 232, 233 & 234

Enclosure Finish

  • Light Gray Epoxy Resin Paint

Enclosure, Body Material

  • Flameproof: Die Cast Aluminum-silicon Alloy
  • Flameproof: Sand Cast in Grey Iron
  • Weatherproof & Exn: Austenitic Stainless Steel
  • Weatherproof & Exn: Die Cast Zinc Alloy

Environmental Protection

  • Flameproof Ex d
  • IP54
  • IP66
  • NEMA 13
  • NEMA 4
  • NEMA 4X
  • Weatherproof

Materials of Construction

  • Mounting Bracket: Stainless Steel

Mounting

  • 2” Pipe Mounting Bracket

Mounting Position

  • Vertical

NACE & NIST

  • NACE MR-0175

NPT Connection

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

Operating Pressure

  • Maximum psi: 8,500 (kPa: 60,000, bar: 600)

Process Connection Material

  • 316 Stainless Steel
  • Nickel Alloy (Monel)

Process Temperature

  • 0° to 120° C (32° to 248° F) - Max.

Repeatability

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

Sensor, Probe Material

  • Stainless Steel

Sensor, Probe Type

  • Bourdon Tube

Service

  • Oxygen Service

Set Point - Decreasing

  • bar: 0 to 586.1
  • kPa: 0 to 58,605
  • psi: 0 to 8,500

Set Point - Increasing

  • bar: 0 to 586.1
  • kPa: 0 to 58,605
  • psi: 0 to 8,500

Static Pressure

  • psi: 0 to 10,000 (kPa: 0 to 68,948, bar: 0 to 689.5)

Storage Temperature

  • -25° to 60° C (-13° to 140° F)

Switch Type

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

System Pressure

  • bar: 0 to 586.1
  • kPa: 0 to 58,605
  • psi: 0 to 8,500

Voltage

  • Impulse to Withstand Voltage Across Contacts: 0.5 kV - Models 231 & 234
  • Impulse to Withstand Voltage Across Contacts: 0.8 kV - Models 231, 232, 233 & 234
  • Insulation Voltage: 125 V - Models 231 & 234
  • Insulation Voltage: 250 V - Models 231, 232, 233 & 234
  • Withstand Voltage: 1.2 kV - Micro Switch Codes H2, H3, H4 & H6
  • Withstand Voltage: 2 kV between Live Parts & Earth/Ground
  • Withstand Voltage: 500 V between Open Contacts

Wetted Materials

  • Bourdon Tube: 316 Stainless Steel
  • Bourdon Tube: Nickel Alloy (Monel)

Documentation

Data Sheets

Product Manuals

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