Dwyer Instruments - Series 1900

Series 1900

Compact Low Differential Pressure Switch

Set Points from 0.07" to 20" w.c., Repetitive Accuracy within 3%


	Service: Air and non-combustible, compatible gases. Wetted Materials: Consult factory. Temperature Limits: -30 to 180°F (-34 to 82.2°C). Pressure Limits: 45" w.c. (11.2 kPa) continuous, 10 psig (68.95 kPa) surge. Switch Type: Single-pole double-throw (SPDT). Repeatability: ±3%. Electrical Rating: 15 A @ 120-480 VAC, 60 Hz. Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz. Derate to 10 A for operation at high cycle rates. Electrical Connections: 3 screw type, common, normally open and normally closed. Process Connections: 1/8" female NPT. Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations. Set Point Adjustment: Screw type inside conduit enclosure. Weight: 1 lb 4.5 oz (581 g). Agency Approvals: CE, UL, CSA and FM. Optional EXPL Explosion-proof enclosure does not possess any agency approvals.