Dwyer Series 1950 Explosion-Proof Differential Pressure Switch 1950P-2-2F

Dwyer Series 1950 Explosion-Proof Differential Pressure Switch 1950P-2-2F,
Series 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. Rain tight NEMA 3 (IP54), 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 in w.c. (0.0075 to 5 kPa) and from .5
to 60 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 weatherproof switches with separate enclosures.
CAUTION: For use only with air or compatible gases. Applications with hazardous
atmospheres and a single positive pressure may require special venting.