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Big Hermet Pressure Switch
Brand: CameronBig Hermet pressure switches are robust field-mounted instruments.
The pressure sensing assembly is identical to a conventional Static "O" Ring type.
The main difference is that the switching element assembly is hermetically sealed in a steel capsule. Switching elements are SPDT or DPDT.
Features- Built-In quality
- Explosion-proof hermetically sealed switching element capsule
- UL Listed, CSA certified approved models
- Field adjustable set points
- Instrument quality
- Robust construction
- Cost effective
Specifications
Brand
Ambient Temperature Range
- -40° to 75° C (-40° to 167° F)
Applications
- Hydraulic Applications
- Process Applications
Approvals & Certifications
- ATEX Approved EEx d IIC T4, T5, & T6
- CSA - Class I, Groups A, B, C, D, Class II, Groups E, F, G, Div. 1 & 2
- ISO 9001
- SAA
- UL
Approvals & Certifications
- Calibration
- Compliance/Conformance
- Dielectric Test
- Hydrostatic Pressure Test
- Inspection Report
- Insulation Resistance
- Typical Material of Wetted Parts
BSP Connection
- 1/2” BSPT Female
- 1/4” BSPT Female
Conduit Connection
- 3/4” NPT Female
Deadband
- psi: 0.2 to 150 (kPa: 1.379 to 1,034, bar: 0.013 to 10.3)
Deadband, Approximate - Vacuum
- Inch WC: 1.4 to 1.6
- Inches Hg: 0.7 to 2.1
- psi: 0.050 to 1.015 (kPa: 0.35 to 7 Mbar: 3.5 to 70)
Diaphragm Material
- 316L Stainless Steel
- Buna-N
- Carpenter 20
- Ethylene Propylene (EPR)
- Fire-Safe Welded
- Flush
- Hastelloy B
- Hastelloy C
- Kalrez
- Monel
- Neoprene
- Tantalum
- Teflon-Coated Polyimide
- Viton
- Welded
Electrical Connectors
- 18 AWG Color-Coaded Standard Wire Leads
- M20 x 1.5 Female
Electrical Contacts
- Normally Closed
- Normally Open
Electrical Rating
- 0.4 A at 125 Vdc
- 0.5 A at 125 Vdc
- 1 A at 125 Vac
- 1 A at 30 Vdc
- 15 A at 250 Vac
- 5 A at 250 Vac
- 5 A at 30 Vdc
Enclosure Finish
- Epoxy Coated
- Fungicidal Varnish
Enclosure, Body Material
- Carbon Steel
- Stainless Steel
Environmental Protection
- Explosion-proof
- IP65
- NEMA 4
- NEMA 4X
- Weathertight
Materials of Construction
- Tag & Nameplate: Stainless Steel
Media
- Air
- Non-Corrosive Process Applications
- Oil
- Water
Mounting
- Pipe
NACE & NIST
- NACE MR-0175, ISO 15156
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
- EPR Ethylene Propylene
- FFKM
- Fire-Safe
- Kalrez
- Neoprene
- Teflon Coated Polyimide
- Viton
- Viton GLT
Overpressure & Static Pressure Limits
- psi: 200 to 5,000 (kPa: 1,379 to 34,470, bar: 13.79 to 344.7)
Process Connection Material
- 316 Stainless Steel
- Brass
- Copper-Free Aluminum
- Hastelloy B
- Hastelloy C
- Kynar
- Monel
- PVC
- Titanium
Proof Pressure
- psi: 400 to 6,000 (kPa: 2,758 to 41,370, bar: 27.58 to 413)
Proof Pressure - Vacuum
- psi: 391.6 to 2,538 (kPa: 2,700 to 17,500, bar: 27 to 175)
Set Point - Decreasing
- bar: 0 to 275.8
- kPa: 0 to 27,580
- psi: 0 to 4,000
Set Point - Increasing
- bar: 0 to 275.8
- kPa: 0 to 27,580
- psi: 0 to 4,000
Switch Type
- DPDT
- SPDT
Temperature Range
- O-Ring Material: -34° to 204° C (-30° to 400° F)
