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S21/S22/S24 Pressure Switch

Brand: Delta Mobrey

Features
  • Weatherproof and Flameproof models ATEX and NEC 500
  • NACE MR-01-75 compatibility
  • Ranges available up to psi: 10,000 (kPa: 70,000, bar: 700)
  • Maximum working pressure up to psi: 15,000 (kPa: 100,000, bar: 1,000)
  • Field set point adjustment against a reference scale
  • Hermetically sealed microswitch options
  • Optional gold alloy contacts
  • Terminal block for easy field wiring
  • Safety vented design as standard
  • PED 2014/68/EU CAT IV option

Specifications

Brand

Adjustment Type

  • Field Adjustable Set Point

Ambient Temperature Range

  • -25° to 60° C (-13° to 140° F)

Applications

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

Approvals & Certifications

  • UKAS
  • SIL 2 Certification
  • ATEX Directive 2014/34/EU
  • BSI Kitemark
  • CE
  • CSA (C,US) Class I, Groups C, D, Class II, Groups E, F, G
  • Ex II 1 G, II 1/2 GD, II 2 GD
  • ISO 9001
  • LVD 2014/35/EU
  • NEC 500
  • PED 2014/68/EU

BSP Connection

  • 1/4” BSPT Female

Cable Entry

  • 1/2” NPT Female
  • 3/4” NPT Female
  • M20 x 1.5

Conduit Connection

  • 3/4” Conduit

Diaphragm Material

  • 316 Stainless Steel
  • Nickel Alloy (Monel)

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
  • CSA: 1 A at 30 Vac/dc
  • CSA: 100 mA at 30 Vdc
  • CSA: 15 A at 125/250/480 Vac
  • CSA: 2 A at 30 Vdc
  • CSA: 5 A at 110/250 Vac
  • CSA: 5 A at 30 Vdc
  • 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

Enclosure Finish

  • Light Gray Epoxy Resin Paint

Enclosure, Body Material

  • Flameproof, Weatherproof & Intrinsically Safe: Austenitic Stainless Steel
  • Flameproof: Die Cast Aluminum-silicon Alloy
  • Weatherproof & Intrinsically Safe: Die Cast Zinc Alloy

Environmental Protection

  • Flameproof Ex d
  • Intrinsically Safe
  • IP66
  • NEMA 4
  • NEMA 4X
  • NEMA 7
  • NEMA 9
  • 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 Female NPT

O-Ring Material

  • Fluorosilicone
  • Nitrile

Operating Pressure

  • Maximum

Process Connection Material

  • 316 Stainless Steel

Process Temperature

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

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: -1 to 700
  • Inches Hg: -30 to 0 - Model S21
  • Inches WC: -50 to 100 - Model S21
  • kPa: -100 to 70,000
  • mbar: -1,000 to 600 - Model S21
  • psi: -14.5 to 10,000

Set Point - Increasing

  • bar: -1 to 700
  • Inches Hg: -30 to 0 - Model S21
  • Inches WC: -50 to 100 - Model S21
  • kPa: -100 to 70,000
  • mbar: -1,000 to 600 - Model S21
  • psi: -14.5 to 10,000

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

Voltage

  • Impulse to Withstand Voltage Across Contacts: 0.5 kV
  • Impulse to Withstand Voltage Across Contacts: 0.8 kV
  • Insulation Voltage: 125 V
  • Insulation Voltage: 250 V
  • Withstand Voltage: 1.2 kV - Micro Switch
  • Withstand Voltage: 2 kV between Live Parts & Earth/Ground
  • Withstand Voltage: 500 V between Open Contacts

  • Oil & Gas
  • Chemical
  • Petrochemical
  • Refining
  • Power
  • OEM
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