1950-0-2F | Differential pressure switch | range .15-.50
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1950-0-2F | Differential pressure switch | range .15-.50" w.c. | approx. deadband @ min. set point 0.10 | approx. deadband @ max. set point 0.15. | Dwyer

Differential pressure switch, range .15-.50" w.c., approx. deadband @ min. set point 0.10, approx. deadband @ max. set point 0.15.

Brand: DwyerSKU: 1950-0-2F
Dwyer | 1950-0-2F
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Overview Details for 1950-0-2F

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Differential pressure switch | range .15-.50" w.c. | approx. deadband @ min. set point 0.10 | approx. deadband @ max. set point 0.15.

Series 1950 Explosion-proof Differential Pressure Switch

Compact, Low Cost, 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
  • 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

Specifications

Series
1950 Explosion-proof Differential Pressure Switch
Category/Type
Pressure
Type
Differential Pressure
Series
1950 Explosion-proof Differential Pressure Switch
Service
Air and non-combustible; compatible gases.
Wetted Materials
Consult factory.
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" 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).
Enclosure Rating
NEMA 3 (IP54); NEMA 7 and 9.
Switch Type
Single-pole double-throw (SPDT).
Electrical Rating
15 A @ 125; 250; 480 VAC; 60 Hz. Resistive 1/8 HP @ 125 VAC; 1/4 HP @ 250 VAC; 60 Hz.
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 on top of housing.
Weight
3.25 lb (1.5 kg); 1950-02 model 4.4 lb (2 kg).
Agency Approvals
CE; CSA; FM; UL.

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