Instrumentation
	Pressure	Switches
	Single and Dual Pressure Switche     1620				Large Diaphragm Pressure Switch    1630
		High Reliability, Repetitive Accuracy				Visual Set Point Adjustment in 5
		within ±1%.  1620 design is still best				Standard Ranges, 0.05" to 12" w.c.,
		where highest precision combined				Repetitive Accuracy within ±1%.
		with diaphragm sealed leak proof				1630 provides maximum dependability.
		construction and mounting simplicity				these switches are suitable for most
		are required.				applications in air conditioning and
						industrial service.
		FOR USE ONLY WITH AIR OR				FOR USE ONLY WITH AIR OR
		COMPATIBLE GASES				COMPATIBLE GASES.
	Floating Contact Null Switch for High and				Low Differential Pressure Switch for General
		Low Actuation     1640				Industrial Service     1800
		Visual Set Point Adjustment,				Set Points from 0.07" to 85" w.c.,
		Adjustable Null Zone. A typical				Repetitive Accuracy within 2%.
		example of usage is to position				Essential for industrial environments,
		motorized dampers when static				the Series 1800 combines small size
		pressure in a duct system reaches a				and low price. UL and CSA listed, and
		desired maximum and reposition the				FM approved.
		dampers when the static pressure				FOR USE ONLY WITH AIR OR
		falls to a pre-established minimum.				COMPATIBLE GASES.