Series 1950 Explosion Proof Differential Pressure Switch (Series 1950)

series 1950 explosion proof differential pressure switch (series 1950)

set points from .03 to 20 in w.c., explosion-proof and weatherproof

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), raintight 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 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.

caution: for use only with air or compatible gases. Applications with hazardous atmospheres and a single positive pressure may require special venting.

product applications

hvac applications

process applications

all-weather applications

modeldescription

1950-00-2fdifferential pressure switch,range .07-.15"w.c.,approx.deadband @ min.set point 0.04,approx.deadband @ max.set point 0.05.

1950-02-2sdifferential pressure switch,range .03-.10"w.c.,approx.deadband @ min.set point 0.025,approx. Deadband @ max.set point 0.05.

1950-0-2fdifferential pressure switch,range .15-.50"w.c.,approx. Deadband @ min.set point 0.10,approx.deadband @ max.set point 0.15.

1950-10-2fdifferential pressure switch,range 3-11"w.c.,approx.deadband @ min.set point 0.40, approx.deadband @ max.set point 0.50.

1950-1-2fdifferential pressure switch,range .4-1.6"w.c.,approx.deadband @ min.set point 0.15, approx.deadband @ max.set point 0.20.

1950-20-2fdifferential pressure switch,range 4-20"w.c.,approx.deadband @ min.set point 0.40, approx.deadband @ max.set point 0.60.

1950-5-2fdifferential pressure switch,range 1.4-5.5"w.c.,approx.deadband @ min.set point 0.30,approx.deadband @ max. Set point 0.40.

1950p-15-2fdifferential pressure switch,range 3-15 psid,approx.deadband @ min.set point 0.9, approx. Deadband @ max. Set point 0.9.

1950p-2-2fdifferential pressure switch,range 0.5-2 psid,approx.deadband @ min.set point 0.3, approx.deadband @ max.set point 0.3.

1950p-25-2fdifferential pressure switch,range 4-25 psid,approx.deadband @ min.set point 0.7, approx.deadband @ max.set point 0.7.

1950p-50-2fdifferential pressure switch, range 15-50 psid,approx.deadband @ min.set point 1.0,approx.deadband @ max. Set point 1.5.

1950p-8-2fdifferential pressure switch,range 1.5-8 psid,approx.deadband @ min.set point 1.0, approx.deadband @ max.set point 1.0.

features

explosion-proof and weatherproof housing provides device protection for outdoor use or harsh environment operation

external set point screw provides easy access that simplifies making adjustments without opening or disassembling enclosure

easily accessible electrical connection simplifies the installation

condition : new

weight :3.25 lb (1.5 kg); 1950-02 model 4.4 lb (2 kg).

type :explosion proof switch

enclosure rating:nema 3 (ip54),nema 7 and 9.: switch type:single-pole double-throw (spdt).

temperature limits:-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.: pressure limits:continuous: 1950's - 45

set point adjustment:screw type on top of housing.: weight:3.25 lb (1.5 kg); 1950-02 model 4.4 lb (2 kg).