Explosion-proof differential pressure switch, range 0.7-0.15" w.c., approx. deadband @ min. set point .4, approx. deadband @ max. set point .6.
Series 1950G Explosion-Proof Differential Pressure 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, and D; Class II, Groups E, F, and G and Class III atmospheres, Directive 2014/34/EU (ATEX) Compliant for 2813 II 2G Ex db IIB+H2 T6, CSA and 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 db 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.
- Compatible with natural gas making it suitable for use in those applications
- External set point screw provides easy access that simplifies making adjustments without opening or disassembling enclosure
- Easily accessible electrical connection simplifies the installation
- Compliance: CSA, FM, UL
- Deadband: 0.04 to 0.06 inH²O
- Electrical Connection: Screw Terminal
- Materials, Wetted: Consult Factory
- Measurement Pressure Type: Differential
- Measurement Pressure, Max: 15 inH²O
- Measurement Pressure, Min: 0.07 inH²O
- Media Compatibility: Air, Argon, Butane, Carbon dioxide, Combustible Gases, Helium, Hydrogen, Methane, Nitrogen, Non-Corrosive Dry Gases, Propane
- Mounting Orientation: Vertical Diaphragm
- Operating Temperature, Max: 140 °F
- Operating Temperature, Min: 0 °F
- Process Connection Size: 1/8 in
- Process Connection Type: NPT Female
- Proof Pressure: Up to 45 inH²O
- Set Point Adjustment: External Screw
- Supply Power Type: DC
- Supply Voltage: 24 Vdc
- Switch Note: 1 form C relay (SPDT), 10 A, 120/240 VAC, 28 VDC. Resistive 50 mA, 125 VDC
- Switch Rating: 10 A @ 120/240 Vac/28 Vdc; 50 mA @ 125 Vdc
- Switch Type: SPDT NO/NC, Selectable
- Weight: 1.35 kg
Applications
- Natural gas applications
- Process applications
- All-weather applications
