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Series DP Double Bellows Differential Pressure Switch
Brand: Dwyer Instruments, LLCTwo opposing bellows combine maximum sensitivity and vibration resistance at a moderate cost in the Series DP differential pressure switches.
Both set and reset points are easily adjustable through non-interactive, externally accessible controls.
Visible setpoint indicators simplify changes. SPDT snap action switch, 316 stainless steel or brass bellows, flanged steel housing. Rated pressures to 600 psig.
A wide variety of switches and circuit styles enables exactly the specific type of control function needed for any system. Mercury switches are a good choice for humid areas while snap switches are better able to resist vibration.
Various operations possible include single adjustment - fixed deadband, double adjustment - adjustable deadband, manual reset (increasing or decreasing pressure) and two stage with each SPST or SPDT switch independently adjustable.
Standard enclosure is NEMA-1 style. Optional weatherproof construction is for outdoor use and explosion-proof enclosure meets requirements for Class I, Groups C & D; Class II, Groups E, F & G.
Features- Bellows switch design provides sensitivity to pressure changes but resists vibration preventing out of range switching
- External access to set and rest controls makes for easy adjustments
- Visible set point indicators simplify changes
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Models matching criteria: 4
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Specifications
Adjustment Type
- Field Adjustable
Approvals & Certifications
- CE
- cUL
Conduit Connection
- 1/2" Conduit Hub
- 1/2" Hole for Conduit Hub
- 3/4" NPT Female
Deadband, Approximate
- bar: 0.03 to 0.41
- bar: 0.10 to 1.37
- kPa: 10 to 137
- kPa: 3.44 to 41.4
- psid: 0.5 to 6.0
- psid: 1.5 to 20
Electrical Connectors
- Screw Terminal
Electrical Rating
- 15 A at 120/240 Vac
Enclosure, Body Material
- Flanged Steel
Maximum System Pressure
- bar: 41.4
- kPa: 4,137
- psi: 600
NPT Connection
- 1/4" NPT Male
- 1/8" NPT Female
Operating Temperature
- -23° to 82° C (-10° to 180° F)
Set Point - Decreasing
- bar: 0 to 5.516
- kPa: 0 to 551.6
- psi: 0 to 80
Set Point - Increasing
- bar: 0 to 5.516
- kPa: 0 to 551.6
- psi: 0 to 80
Switch Type
- SPDT
System Pressure
- bar: 3.447 to 41.37
- kPa: 344.7 to 4,137
- psi: 50 to 600
Wetted Materials
- 316 Stainless Steel
- Brass
- Accurate Switch Triggers in High Pressure Applications