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1831-1-RA-S 1831-2-RA-S DPDT差壓開關 Dwyer德威爾 壓差開關

switch and manual reset. The SERIES 1831 combines small size with 4% set point

repeatability. Absolutely no power is required to operate the DPDT switch. Set point

adjustment on the switch is easily accessible for modifying the set point.

The Series 1831 DPDT Low Differential Pressure Switches with Manual Reset eliminate

common problems associated with typical high duct static cutout installations. Since

the 1831 requires absolutely no power to drive its outputs, a separate power loop

and its associated additional wiring and conduit is alleviated, reducing material and

labor installation costs. Both control contacts of the Series 1831 activate at the same

time. The potential of the lead switch shutting down the fan preventing the lag switch

from sending an alarming signal to the DDC is no longer a probable system liability.

Potential costly maintenance calls are diminished. Unlike typical switches that possess

only a single conduit entry for both control loops, the Series 1831 provides two conduit

connections simplifying wiring while eliminating additional conduit tees.

1831-1-RA-S 1831-2-RA-S DPDT差壓開關 Dwyer德威爾 壓差開關

Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.

Temperature Limits: -30 to 180°F (-34 to 82.2°C).

Pressure Limits: 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge.

Switch Type: 2 SPDT.

Actuation Time Difference: 1 millisecond maximum actuation delay between contacts.

Repeatability: ±4% max.

Electrical Rating: 4 A @ 125/250 VAC.

Electrical Connections: Screw type terminal block.

Process Connections: 1/8" female NPT.

Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.

Set Point Adjustment: Screw type inside mounting spud.

Weight: 1 lb 2 oz (522 g).

Warranty: 5 year limited warranty.

1831-1-RA-S 1831-2-RA-S DPDT差壓開關 Dwyer德威爾 壓差開關

Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.

Temperature Limits: -30 to 180°F (-34 to 82.2°C).

Pressure Limits: 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge.

Switch Type: 2 SPDT.

Actuation Time Difference: 1 millisecond maximum actuation delay between contacts.

Repeatability: ±4% max.

Electrical Rating: 4 A @ 125/250 VAC.

Electrical Connections: Screw type terminal block.

Process Connections: 1/8" female NPT.

Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations.

Set Point Adjustment: Screw type inside mounting spud.

Weight: 1 lb 2 oz (522 g).

Warranty: 5 year limited warranty.