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Instantly add the Series 20 Differential Pressure Switch and 50,000+ more product series to your store or catalog  
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SOR Differential Pressure Switch, Series 20

Series 20 Differential Pressure Switch

Brand: SOR Inc
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SOR Differential Pressure Switch, Series 20
The Series 20 Differential Pressure Switch from SOR is essentially a Static "O" Ring type pressure sensor with a bias pressure. 

The housing is pressurized by clean, dry air or inert gas instead of atmospheric pressure. 

This reference (bias pressure) opposes the process pressure. 

Housings are weathertight or explosion proof. Switching elements are SPDT or DPDT.

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Specifications

Brand

Adjustment Type

  • Field Adjustable

Ambient Temperature Range

  • -34° to 80° C (-30° to 180° F)

Approvals & Certifications

  • Calibration
  • Compliance/Conformance
  • Dielectric Test
  • Hydrostatic Pressure Test
  • Inspection Report
  • Insulation Resistance
  • SIL 1 & 2 Certification
  • Typical Material of Wetted Parts

Approvals & Certifications

  • CRN - Canadian Registration Number
  • CSA
  • UL

BSP Connection

  • Pressure Port: 1/2” BSP Female
  • Pressure Port: 1/4” BSP Female

Cover Material

  • Aluminum - Housing TA

Deadband

  • Typical psi: 0.029 to 0.5 (kPa: 0.2 to 3.5, Mbar: 2 to 35)

Diaphragm Material

  • 316L Stainless Steel
  • Buna-N
  • Carpenter 20 Stainless Steel
  • Ethylene Propylene (EPR)
  • Hastelloy B
  • Hastelloy C
  • Kalrez
  • Monel
  • Neoprene
  • Tantalum
  • Teflon-Coated Polyimide (TCP)
  • Viton

Electrical - Free Leads

  • 18”, 18 AWG Wire Leads

Electrical Connectors

  • 1/2” NPT Female
  • 1/2” NPT Male
  • 3/4” NPT Female
  • 3/4” PF
  • M20 x 1.5
  • PG13.5

Electrical Contacts

  • Low Power Gold Contacts
  • Normally Closed
  • Normally Open

Electrical Rating

  • 0.3 A at 125 Vdc, Resistive - High Ambient Temperature Rating 204.4° C (400° F)
  • 0.4 A at 125 Vdc, Resistive - Normal Service AC
  • 0.5 A at 125 Vdc, Resistive - Wide Dead Band AC or DC, AC or DC, Narrow Dead Band DC, Very Wide Dead Band DC, High Ambient Temperature Rating 204.4° C (400° F)
  • 1 A at 125 Vac - Low Power Gold Contacts
  • 1 A at 28 Vdc, Resistive - Low Power Gold Contacts
  • 1 A at 30 Vdc, Resistive - Low Power Gold Contacts
  • 1.5 A Min. at 125 Vdc, Resistive - Very High Capacity DC Magnetic Blow-Out
  • 10 A at 125 Vac - Very High Capacity DC Magnetic Blow-Out
  • 10 A, Max.
  • 11 A at 250 Vac - AC or DC
  • 15 A at 250 Vac - Normal Service AC, Wide Dead Band AC or DC, Very Wide Dead Band DC
  • 5 A at 250 Vac - Narrow Dead Band DC, High Ambient Temperature Rating 204.4° C (400° F)
  • 5 A at 30 Vdc, Resistive - Normal Service AC, AC or DC, Narrow Dead Band DC

Enclosure Finish

  • Epoxy Coated (Exterior Only)
  • Epoxy Powder-Coated
  • Fungicidal Varnish

Enclosure, Body Material

  • Aluminum - Housing RB
  • Cast Iron - Housing TA
  • Stainless Steel - Housing RH

Environmental Protection

  • Explosion-proof
  • IP52
  • IP65
  • IP66
  • NEMA 12
  • NEMA 4
  • NEMA 4X
  • Weathertight

Maximum System Pressure

  • psi: 20 (kPa: 140, bar: 1.4) - Housing RB (Low Port)
  • psi: 200 (kPa: 1,400, bar: 14) - Housing TA (Low Port) & Piston 22 (High Port)
  • psi: 750 (kPa: 5,000, bar: 50) - Piston 24 (High Port)

Mounting

  • Pipe Mounting (Stanchion) Kit for 1-1/2 to 2” Pipe

Name Plate, Tag Material

  • 316 Stainless Steel
  • Fiber
  • Stainless Steel

NPT Connection

  • Pressure Port: 1” NPT Male
  • Pressure Port: 1/2” NPT Female
  • Pressure Port: 1/2” NPT Male
  • Pressure Port: 1/4” NPT Female
  • Pressure Port: 1/4” NPT Male

O-Ring Material

  • AFLAS
  • Buna-N
  • Ethylene Propylene (EPR)
  • Kalrez
  • Neoprene
  • Viton
  • Viton GLT

Pressure Range

  • psi: 0 to 75 (kPa: 0 to 500, bar: 0 to 5)

Process Connection Material

  • Pressure Port: Aluminum 6061 Wrought 356 or 360 Casting
  • Pressure Port: 316 Stainless Steel Wrought CF-8M Casting
  • Pressure Port: 347 Stainless Steel Wrought CF-8C Casting
  • Pressure Port: Brass Wrought Silicon Brass Casting
  • Pressure Port: Carpenter 20 Stainless Steel Wrought CF-7M Casting
  • Pressure Port: Hastelloy B
  • Pressure Port: Hastelloy C
  • Pressure Port: Monel

Set Point - Decreasing

  • bar: 0.03 to 5
  • Inches WC: 2.5 to 45
  • kPa: 3 to 500
  • psi: 0.4 to 75

Set Point - Increasing

  • bar: 0.03 to 5
  • Inches WC: 2.5 to 45
  • kPa: 3 to 500
  • psi: 0.4 to 75

Spring Material

  • Elgiloy - Switching Elements W & Y

Switch Type

  • DPDT
  • SPDT

System Pressure

  • bar: 0 to 50
  • kPa: 0 to 5,000
  • psi: 0 to 750

  • Fluid Power Applications
  • Process Applications

Documentation

Data Sheets

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