Differential Pressure Flow Switch 1.Compact size 2.Optional status light 3.Terminal blocking wiring 4.OEM capacity

 The set point could be calibrated directly by professionals according to customer's requirement, and printed on the la-

bel, user no need to adjust again in the field. OEM customers could calibrate by specialized instrument according to re-

quirement, and ACOL provides relevant service.

It depends upon two opposing diaphragms to sense pressure on the “High” and “Low” pressure outputs of a system. 

The resulting pressure differential is transmitted through a linkage to a snapaction electrical switch, providing an outp-ut when a pre-set difference is exceeded.  

Specification:

Storage temperature:	-29°C~82°C
Ambient temperature:	-20°C~71°C
Media temperature range:	-20°C~93°C
Pressure connection:	1/4" SAE(7/16" –20UNF)G , G1/4(1/4"NPT )etc for optional
Max. static pressure:	10/16/20 bar
Max. pressure difference:	10bar
Set point repeatability:	±1%
Output mode:	one SPDT dry contact output, terminal block wiring
Switch:	3A (max) 125/250VAC

Nomenclature:

WFS1	1	030	A	A	3A	B	O	N	Specification
WFS1									WFS 11 Differential pressure switch with one adjustable setpoint
	1								one set point
		030							Differential pressure: Max.setting range:Unit:kPa
		...							...
			A						High pressure:7/16''  UNF male thread(1/4'' SAE)
			B						High pressure:1/4''  UPT male thread(1/4'' SAE)
				A					Low pressure:7/16''  UNF male thread(1/4'' SAE)
				B					Low pressure:1/4''  UPT male thread(1/4'' SAE)
					3A				terminal block connection,the letter indicates power supply of indicator light          A: no indicator lamp   B.outside lead-in
						B			Black( factory recommend)
						L			blue( need large Qty)
						K			custom-made
							O		cavity material:H59brass
							2		cavity material:stainless steel
								N	diagram material, NBR, apply to water,air,oil

  

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