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102/103 Differential Pressure Switch
Brand: Cameron
102/103 differential pressure switches are robust field-mounted instruments.
The 102 pressure sensing assembly is a piston; the 103 pressure sensing assembly is a diaphragm-piston combination.
The 102/103 can be configured for service in non-hazardous and hazardous locations. Switching elements are SPDT or DPDT.
Process pressure is sensed by a piston on the 102 and a diaphragm-piston combination on the 103.
Hi-side system pressure acts on the piston to produce force Fh.
It is counteracted by the adjustable range spring force Fs and Lo-side system pressure acting on the backside of the piston to produce force Fl.
The resultant force Fd acts on the piston and overcomes the force of the adjustable range spring [(Fd = Fh - (Fl + Fs)] and moves a lever that is connected to a torsionally stiff cross shaft.
One end of the cross shaft is connected to a lever that is biased by the range spring; the other end is connected to a lever that actuates (deactuates) an electrical switching element.
Specifications
Brand
Adjustment
- Screws
Adjustment Type
- Field Adjustable
Ambient Temperature Range
- -54° to 204° C (-65° to 400° F)
Approvals & Certifications
- ATEX
- CSA
- ISO
- UL
Approvals & Certifications
- Calibration
- Compliance/Conformance
- Dielectric Test
- Hydrostatic Pressure Test
- Inspection Report
- Insulation Resistance
- Typical Material of Wetted Parts
Conduit Connection
- 1/2” NPT Male
- 3/4” NPT Female
Deadband
- Inches WC: 0.5 to 35
Diaphragm Material
- Kapton (Polyimide Film)
- Teflon-Coated Polyimide
Differential Pressure
- psid: 0 to 3,000 (kPa: 0 to 20,680, bar: 0 to 207) - Max.
Electrical Connectors
- 1/2” NPT Female
- 1/2” NPT Male - Model 102
- 18 AWG, 18” (460 mm)
- 3/4” NPT Female
- M20 x 1.5
Electrical Contacts
- Normally Closed
- Normally Open
Electrical Rating
- 15 A at 250 Vac - Non-Hazardous Location
- 5 A at 250 Vac - Hazardous Locations
Enclosure Finish
- Epoxy Coated
Enclosure, Body Material
- 316 Stainless Steel
- Aluminum
- CF-8M Stainless Steel
Environmental Protection
- Explosion-proof
- Hazardous Location Conditions - Class I, Groups A, B, C, D Class II, Groups E, F, G, Div. 1, & 2, II 2 G EEx M II
- Intrinsic Safety - Ex ia IIC Gb, Ex d IIC T5/T6
- Non-Hazardous Area
- Weatherproof
Maximum System Pressure
- psi: 0 to 3,000 (kPa: 0 to 20,680, bar: 0 to 206.8)
Mounting
- 1-1/2” to 2” Pipe
NACE & NIST
- NACE MR-0175, ISO 15156
NPT Connection
- 1/2” NPT Female
- 1/4” NPT Female
O-Ring Material
- Buna-N - Wetted Material
- Ethylene Propylene (EPR) - Wetted Material
- Kalrez - Wetted Material
- Viton - Wetted Material
Proof Pressure
- psi: 0 to 5,000 (kPa: 0 to 34,470, bar: 0 to 344.7)
Set Point - Decreasing
- bar: 0 to 172.4
- Inches WC: 0 to 7
- kPa: 0 to 17,240
- psid: 0 to 2,500
Set Point - Increasing
- bar: 0 to 172.4
- Inches WC: 0 to 7
- kPa: 0 to 17,240
- psid: 0 to 2,500
Switch Type
- DPDT
- SPDT
System Pressure
- bar: 0 to 206.8
- kPa: 20,684
- psi: 0 to 3000
Temperature Range
- 0° to 204° C (32° to 400° F) - Viton
- -15° to 204° C (5° to 400° F) - Kalrez
- -34° to 204° C (-30° to 400° F) - TCP-Teflon Coated Polyimide & Kapton Polyimide Film
- -34° to 93° C (-32° to 200° F) - Buna-N & Ethylene Propylene (EPR)
- Air
- Non-Corrosive Process Fluids
- Oil & Gas Applications
- Water & Wastewater
