Differential Pressure Switch (1.4 - 5.5" W.C.)

Series 1950 Explosion-Proof Differential Pressure Switches combine the best features of the Series 1900 Pressure Switch with an integral explosion-proof and weather-proof housing. Each unit is UL and CSA listed; FM approved for use in Class I, Groups C and D; Class II, Groups E, F, and G; and Class III atmospheres (NEMA 7 and 9). They are totally rain-tight for outdoor installations. Twelve models allow setpoints from .03 to 20 inches w.c. and from .5 to 50 psi (3.4 to 345 kPa). Easy access to the SPDT switch for electrical hook-up is provided by removing the top plate of the threepart aluminum housing. Adjustment to the set point of the switch can be made without disassembling the housing. The unit is very compact, about half the weight and bulk of equivalent conventional explosion-proof switches.

Features:

• 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