Dwyer-Explosion-Proof Differential Pressure Switches-1950i

• Model 1950 Explosion-Proof Differential Pressure Switch combines the best features of the popular Dwyer® Series 1900 Pressure Switch with an integral explosion-proof and weatherproof housing, making it an exceptional value for either application. It is CE, UL and CSA listed, FM approved for use in Class I, Div 1, Groups C and D, Class II Groups E, F, and G and Class III hazardous atmospheres (NEMA 7 & 9), Raintight (NEMA 3).

• Weatherproof features include a drain plug and O-ring seal in cover. Electrical connections are easily made by removing front cover.

• For convenience the set point adjustment screw is located on the outside of the housing.

• Twelve models offer set points from .03 to 20˝ w.c. (7.5 to 5 kPa) and from .5 to 50 psi (0.035 to 3.5 bar).

• The unit is very light and compact — about half the weight and bulk of other explosion-proof or weather-proof switches with separate enclosures.

-40 to 140°F (-40 to 60°C); 0 to 140°F (-17.8 to 60°C) for 1950P-8,

15, 25, and 50. -30 to 130°F (-34.4 to 54.4°C) for 1950-02.

Continuous: 1950’s - 45˝ w.c. (0.11 bar);1950P’s - 35 psi (2.41 bar); 1950P-50 only – 70 psi (4.83 bar).

Surge: 1950’s - 10 psi (0.69 bar), 1950P’s - 50 psi (3.45 bar), 1950P-50 only - 90 psi (6.21 bar).

15 A @, 125, 250, 480 VAC, 60 Hz.

Resistive 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC, 60 Hz.