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Description
Dwyer 1950G-5-B-24-NA Explosion-proof differential pressure switch, range 1.4-5.5" w.c., approx. deadband @ min. set point .4, approx. deadband @ max. set point .9. Series 1950G Explosion-proof Differential Pressure Switch, Explosion-proof, Weatherproof, Compatible with Natural Gases
- The Model 1950G Explosion-Proof Switch combines the best features of the popular Dwyer® Series 1950 Pressure Switch with the benefit of natural gas compatibility. Units are rain-tight for outdoor installations, and are UL listed for use in Class I, Groups A, B, C, & D; Class II, Groups E, F, & G and Class III atmospheres, Directive 94/9/EC (ATEX) Compliant for CE ATEX II 2G Exd IIB+H2 T6, CSA & FM approved for Class I, Div. 1, Groups B, C, D; Class II, Div. 1, Groups E, F, G and Class III atmospheres IECEx Ex d IIB+H2 T6 (-40°C < Ta < +60°C). The 1950G is very compact, about half the weight and bulk of equivalent conventional explosion-proof switches.
- Easy access to the SPDT relay and power supply terminals is provided by removing the top plate of the aluminum housing. A supply voltage of 24 VDC, 120 or 240 VAC is required. A captive screw allows the cover to swing aside while remaining attached to the unit. Adjustment to the set point of the switch can be made without disassembly of the housing.
- Service: Air and compatible combustible gases.
- Temperature Limits: 0 to 140°F (-17 to 60°C). Note: Set point drift may occur with ambient temperature changes.
- Pressure Limits: 45" w.c. (11.2 kPa) continuous; 10 psig (68.95 kPa) surge.
- Enclosure Rating: NEMA 3 (IP54), NEMA 7 and 9.
- Switch Type: 1 Form C relay (SPDT).
- Electrical Rating: 10A, 120/240 VAC, 28 VDC. Resistive 50mA, 125 VDC.
- Power Requirements: 24 VDC ±10%. 120 or 240 VAC ±10% optional.
- Electrical Connections: Internal terminal block.
- 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: 2 lbs 15.7 oz (1.35 kg).
- Agency Approvals: CE, UL, CSA, FM, ATEX IECEx.
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Prop 65 Warning: Product's may contain one or more substances or chemicals known to the State of California to cause cancer, birth defects, or reproductive harm.
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