The 1950G series explosion-proof differential pressure switch has all the best features of the Dewell 1950 series pressure switches and can also be used for natural gas monitoring. It can be installed outdoors and meets UL explosion-proof certifications: Class I, Groups A, B, C, & D; Class II, Groups E, F, & G; and Class III atmospheres, Directive 94/9/EC. It is also ATEX compliant for CE ATEX II 2G Exd IIB H T6, and 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 H T6. It's compact and weighs about half as much as a conventional explosion-proof switch.  

When you open the front cover of the aluminum housing, wiring to the SPDT relay and power supply is super easy. It requires a 24 VDC, 120, or 240 VAC power supply. When you open the cover, the screws stay in place so you won't lose them on site. You can adjust the setpoint without even opening the housing.

● Compatible with natural gas

● External adjustment screw provides a convenient entry for adjustments without opening or removing the casing

● Easily accessible electrical connections simplify installation