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231/232/233/234 Pressure Switch
Brand: Delta MobreyThe model 231/232/233/234 Performance Series pressure switches utilise bourdon tube type sensor that offer a very linear response to pressure change.
Features- Precision stainless steel mechanism for arduous atmospheres and high humidity
- Set point adjustable over the whole range against calibrated scale with tamperproof adjuster
- Weatherproof and Flameproof models ATEX and IEC Ex
- Safety vented design as standard
- NACE MR-01-75 compatibility
- Hermetically sealed microswitch option
- Models for fixed switching differential, adjustable differential and HI-LO operation
- Ranges available up to psi: 8,500 (kPa: 60,000, bar: 600)
- Static Pressure up to psi: 10,000 (kPa: 69,000, bar: 690)
Specifications
Brand
Accuracy
- Scale Accuracy: ± 3 % of Full Scale
Adjustment Type
- Screw
- Set Point Field Adjustable
Ambient Temperature Range
- -25° to 60° C (-13° to 140° F)
Applications
- Chemical Industry
- Food Industry
- Oil & Gas Applications
- Petrochemical
- Power
- Refining
Approvals & Certifications
- ATEX EN 60079-0, EN 60079-1, EN 60079-31
- ATEX Ex db IIC T4 to T6, Flameproof
- CE
- CSA
- Ex II 2 GD, II 3 GD
- IEC Ex: Ex db IIC T4 & T6 Gb
- LVD 2014/35/EU
- PED 97/23/EC
BSP Connection
- 1/4” BSP Female
- 1/4” BSPT Female
Cable Entry
- Cable Gland & Back Nut: M20
- M20 x 1.5
Conduit Connection
- 3/4” Conduit
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 - Models 231 & 234
- CSA: 1 A at 30 Vac/dc - Models 231 & 234
- CSA: 100 mA at 30 Vdc - Models 231 & 234
- CSA: 2 A at 30 Vdc - Models 231, 232, 233 & 234
- CSA: 5 A at 110/250 Vac - Models 231, 232, 233 & 234
- CSA: 5 A at 30 Vdc - Models 231 & 234
- IEC 947-5-1 / EN 60947-5-1: 0.22 / 0.1 A at 125/250 Vdc - Models 231, 232, 233 & 234
- IEC 947-5-1 / EN 60947-5-1: 0.3 A at 120 Vac - Models 231 & 234
- IEC 947-5-1 / EN 60947-5-1: 0.6 / 0.3 A at 120/240 Vac - Models 231, 232, 233 & 234
Enclosure Finish
- Light Gray Epoxy Resin Paint
Enclosure, Body Material
- Flameproof: Die Cast Aluminum-silicon Alloy
- Flameproof: Sand Cast in Grey Iron
- Weatherproof & Exn: Austenitic Stainless Steel
- Weatherproof & Exn: Die Cast Zinc Alloy
Environmental Protection
- Flameproof Ex d
- IP54
- IP66
- NEMA 13
- NEMA 4
- NEMA 4X
- 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 NPT Female
Operating Pressure
- Maximum psi: 8,500 (kPa: 60,000, bar: 600)
Process Connection Material
- 316 Stainless Steel
- Nickel Alloy (Monel)
Process Temperature
- 0° to 120° C (32° to 248° F) - Max.
Repeatability
- Set Point Repeatability: ± 1 % of Span at 20° C (68° F) Ambient
Sensor, Probe Material
- Stainless Steel
Sensor, Probe Type
- Bourdon Tube
Service
- Oxygen Service
Set Point - Decreasing
- bar: 0 to 586.1
- kPa: 0 to 58,605
- psi: 0 to 8,500
Set Point - Increasing
- bar: 0 to 586.1
- kPa: 0 to 58,605
- psi: 0 to 8,500
Static Pressure
- psi: 0 to 10,000 (kPa: 0 to 68,948, bar: 0 to 689.5)
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: 0 to 586.1
- kPa: 0 to 58,605
- psi: 0 to 8,500
Voltage
- Impulse to Withstand Voltage Across Contacts: 0.5 kV - Models 231 & 234
- Impulse to Withstand Voltage Across Contacts: 0.8 kV - Models 231, 232, 233 & 234
- Insulation Voltage: 125 V - Models 231 & 234
- Insulation Voltage: 250 V - Models 231, 232, 233 & 234
- Withstand Voltage: 1.2 kV - Micro Switch Codes H2, H3, H4 & H6
- Withstand Voltage: 2 kV between Live Parts & Earth/Ground
- Withstand Voltage: 500 V between Open Contacts
Wetted Materials
- Bourdon Tube: 316 Stainless Steel
- Bourdon Tube: Nickel Alloy (Monel)
