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Opposed Piston Differential Pressure Switch
Brand: Cameron
The Opposed Piston differential pressure switch is essentially two static o-ring type pressure sensors connected at opposite ends of a common piston shaft.
Housings are weathertight or explosion proof. Switching elements are SPDT or DPDT.
FeaturesComplete Product Line
- Standard models with many options cover pressure range 0.5 to 1,000 psid. Customized specials available.
Robust Construction
- Rugged, high-cycle rate tolerance, long life, not critical to vibration, high overrange and proof pressures, excellent corrosion resistance to hostile environments.
Instrument Quality
- High repeatability, narrow dead band, negligible temperature effect.
Wetted Parts
- Wide selection of materials, process connections configuration and size.
Snap-Action Electrical Switching Element
- Wide selection UL Listed and CSA Certified switching elements for AC and DC service.
Field Adjustable
- Excellent resolution of Set Points, selflocking adjustment, no special tools required. No charge for factory calibration.
Agency Listings/Certification
- Select Models with ATEX, CSA
- Meets Most Code and Customer Requirements
Specifications
Brand
Adjustment Type
- Field Adjustable - Excellent Resolution of Set Points, Selflocking
Ambient Temperature Range
- -54° to 204° C (-65° to 400° F)
Applications
- Fluid Power Applications
- Process Applications
Approvals & Certifications
- Calibration
- Compliance / Conformance
- Dielectric Test
- Hydrostatic Pressure Test
- Inspection Report
Approvals & Certifications
- ATEX Ex ia IIC T6 to T4 Gb
- CSA Class I, Groups A, B, C, D, Class II, Groups E, F, G DIvision 1 & 2
- UL
BSP Connection
- 1/2" BSPT Female
- 1/4" BSPT Female
Deadband
- psi: 0.15 to 20 (kPa: 1.034 to 140, bar: 0.01 to 1.4) - Typical
Diaphragm Material
- 316L Stainless Steel
- Buna-N
- Carpenter 20 Stainless Steel / Alloy 20 or Incoloy
- Ethylene Propylene (EPR)
- Hastelloy B
- Hastelloy C
- Kalrez
- Monel
- Neoprene
- Tantalum
- Teflon-Coated Polyimide
- Viton
Electrical Connectors
- 3/4" NPT Female
- M20 x 1.5
- Terminal Block
Electrical Contacts
- Gold-Plated
Electrical Rating
- High Ambient Temperature Rating 204.4° C (400° F): 0.3 A at 125 Vdc, Resistive
- High Ambient Temperature Rating 204.4° C (400° F): 0.5 A at 125 Vdc, Resistive
- High Ambient Temperature Rating 204.4° C (400° F): 5 A at 250 Vac
- Low Power Gold Contacts: 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
Enclosure Finish
- Epoxy Powder-Coated
- Fungicidal Varnish
Enclosure, Body Material
- Aluminum
- Cast Iron
Environmental Protection
- Explosion-proof
- IP65
- NEMA 4
- NEMA 4X
- Weatherproof
- Weathertight
Gasket Material
- Neoprene Cover Gasket
Materials of Construction
- Stainless Steel - Tag, Nameplate
Maximum System Pressure
- psi: 2,000 (kPa: 14,000, bar: 140)
Mounting
- Pipe (Stanchion)
NPT Connection
- 1" NPT Female
- 1" NPT Male
- 1/2" NPT Female
- 1/4" NPT Female
- 2" NPT Female
- 3/4" NPT Male
Nut & Bolt Material
- Adjusting Nut: Stainless Steel
O-Ring Material
- AFLAS
- Buna-N
- Ethylene Propylene (EPR)
- Kalrez
- Neoprene
- Viton
- Viton GLT
Process Connection Material
- 316 Stainless Steel Wrought CF8M Casting - Pressure Port Material
- 347 Stainless Steel Wrought CF-8C Casting - Pressure Port Material
- Aluminum Series 2,000 Wrought 356 or 360 Casting - Pressure Port Material
- Brass Half Hard Yellow Wrought Silicon Brass Casting - Pressure Port Material
- Carbon Steel Ledloy AX Wrought WCB Casting - Pressure Port Material
- Carpenter 20 Stainless Steel Wrought CF-7M Casting - Pressure Port Material
- Hastelloy B - Pressure Port Material
- Hastelloy C - Pressure Port Material
- Monel - Pressure Port Material
Proof Pressure
- psi: 0 to 2,500 (kPa: 0 to 17,240, bar: 0 to 172.4)
Set Point - Decreasing
- bar: 0.034 to 70
- kPa: 3.447 to 7,000
- psid: 0.5 to 1,000
Set Point - Increasing
- bar: 0.034 to 70
- kPa: 3.447 to 7,000
- psid: 0.5 to 1,000
Spring Material
- Elgiloy
Switch Type
- DPDT
- Hermetically Sealed
- SPDT
System Pressure
- bar: 0 to 140
- kPa: 0 to 14,000
- psi: 0 to 2,000