Công Tắc Chênh Áp Series H3

 

Model	:	SERIES H3
Manufacturer	:	DWYER
Origin	:	USA
Wetted Materials	:	See pressure chamber and diaphragm material in model chart.
Temperature Limit	:	-4 to 220°F (-20 to 104°C), ATEX: -20 to 90°C (-4 to 194°F).
Pressure Limit	:	1500 psig (103 bar).
Enclosure Rating	:	Standard meets NEMA 4X (IP56), drain option meets NEMA 3 (IP54). For hazardous use see the hazardous location ratings chart.
Switch Type	:	SPDT or DPDT snap switch.
Electrical Rating	:	5A @ 125/250 VAC, 30 VDC.
Electrical Connections	:	See model chart.
Conduit Connection	:	3/4" female NPT.
Process Connection	:	1/8" female NPT.
Mounting Orientation	:	Vertical.
Set Point Adjustment	:	Internal screw.
Weight	:	4 lb, 2 oz (2 kg).
Deadband	:	Approximately 5% of range.
Agency Approvals	:	UL, CSA, CE, and ATEX see ratings chart

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Example	H3	S	2	S	C	MV	H3S-2SC-MV Differential Pressure Control; 316 SS pressure chamber and Fluoroelastomer diaphragm; weatherproof and ATEX; SPDT snap action switch with gold contacts; fixed deadband, automatic reset; adjustable range 0.5-15 psid
Construction	H3						Series designator, weatherproof and explosion-proof
Pressure Chamber & Diaphragm Material (Wetted)		A S					Aluminum chamber with Nitrile diaphragm 316 SS chamber with Fluoroelastomer diaphragm
Adjustable Operating Range			1 2 3 4				Adjustable range 10-180 in. w.c. (2.48-44.78 kPa) Adjustable range 0.5-15 psid (0.03-1 bar) Adjustable range 5-70 psid (.34-4.8 bar) Adjustable range 10-200 psid (.7-13.8 bar)
Circuit (Switch) Options				S D			SPDT snap action switch rated 5A @ 125/250 VAC, 30 VDC DPDT snap action switch rated 5A @ 125/250 VAC, 30 VDC
Electrical Connection Options					L T C		18 AWG x 18 inch lead wires UL, CSA approved internal terminal block ATEX approved internal terminal block
						DRAIN MV VIT	Housing with drain - allows condensate to be drained from inside enclosure (meets NEMA 3 instead of 4X) Gold contacts on snap switch for dry circuits rated 1A @ 125 VAC, 1A resistive or 0.5 A inductive @ 30 VDC Fluoroelastomer diaphragm option where not standard

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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