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306/386 Differential Pressure Switch
Brand: Delta MobreyThe model 306/386 Performance Series differential pressure switches utilise a nitrile diaphragm based sensor. This, when coupled with a precision stainless steel mechanism designed to minimise friction in the moving parts.
Features- Precision stainless steel mechanism for arduous atmospheres and high humidity
- Set point adjustable over whole range against calibrated scale with tamperproof adjuster
- Weatherproof and Flameproof models ATEX and IEC EX
- Safety vented or blow out device as standard
- Hermetically sealed microswitch option
- Models for fixed switching differential, adjustable differential and HI-LO operation
- Ranges available up to psi: 60 (kPa: 400, bar: 4)
- Static pressure up to psi: 200 (kPa: 1,500, bar: 15)
Specifications
Brand
Adjustment Type
- 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 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” BSPT Female
Cable Entry
- 3/4” NPT Female
- Cable Gland & Back Nut: M20
- M20 x 1.5
Conduit Connection
- 3/4” Conduit
Diaphragm Material
- Nitrile
Electrical - Free Leads
- 14 AWG, 2.5 mm²
Electrical Connectors
- Terminal Block
Electrical Contacts
- Gold Alloy Contacts for Low Energy Circuits
Electrical Rating
- CSA & IEC: 1 A at 125 Vac
- CSA: 1 A at 30 Vac/dc
- CSA: 100 mA at 30 Vdc
- CSA: 2 A at 30 Vdc
- CSA: 5 A at 110/250 Vac
- CSA: 5 A at 30 Vdc
- IEC 947-5-1 / EN 60947-5-1: 0.22 / 0.1 A at 125/250 Vdc
- IEC 947-5-1 / EN 60947-5-1: 0.3 A at 120 Vac
- IEC 947-5-1 / EN 60947-5-1: 0.6 / 0.3 A at 120/240 Vac
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
- IP66
- NEMA 4
- NEMA 4X
- Weatherproof
Flange Material
- Aluminum Alloy
- Cast Iron
Materials of Construction
- Mounting Bracket: Stainless Steel
Mounting
- 2” Pipe Mounting Bracket
Mounting Position
- Vertical
Operating Pressure
- Maximum 15 bar (200 psi)
Process Temperature
- 0° to 60° C (32° to 140° F) - Max.
Repeatability
- Set Point Repeatability: ± 1 % of Span at 20° C (68° F) Ambient
Seat / Seal Material
- Seal: Nitrile
Set Point - Decreasing
- bar: 0.1 to 4
- Inches WC: -0.25 to 50
- kPa: 10 to 400
- mbar: -0.6 to 350
- psi: 1 to 60
Set Point - Increasing
- bar: 0.1 to 4
- Inches WC: -0.25 to 50
- kPa: 10 to 400
- mbar: -0.6 to 350
- psi: 1 to 60
Static Pressure
- psi: 0 to 200 (kPa: 0 to 1,500, bar: 0 to 15)
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: 200
- kPa: 20,000
- psi: 2,900
Voltage
- Impulse to Withstand Voltage Across Contacts: 0.5 kV
- Impulse to Withstand Voltage Across Contacts: 0.8 kV
- Insulation Voltage: 125 V
- Insulation Voltage: 250 V
- Withstand Voltage: 1.2 kV - Micro Switch
- Withstand Voltage: 2 kV between Live Parts & Earth/Ground
- Withstand Voltage: 500 V between Open Contacts
- Oil & Gas
- Chemical
- Petrochemical
- Refining
- Power
- Food Industry