Dwyer Series 1950G Explosion-Proof Differential Pressure Switch 1950G-00-B-24-NA,
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, & D; Class II, Groups E, F, & G and Class III atmospheres,
Directive 2014/34/EU (ATEX) Compliant for 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.

