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Introduction

Principle structure

In-line installation, mechanical flow switch for liquid or gaseous media. Available in robust plastic, aluminium or stainless steel housings. The medium pushes the plunger spring to the set position, and the magnetic field acts on the reed switch to output a passive on-off signal.

main feature

Minimal pressure loss, good repeatability, anti-fouling ability.

The mechanical part is completely isolated from the electronic part, and the LED shows the switch action state.

Large switch capacity, with switch setting scale, easy to set, users do not need to set on site.

A variety of materials and pressure rating options.

application

Gas-liquid dual-use, industrial automation / mechanical equipment / air compression industry / refrigeration and air conditioning

technical parameter

Predetermined area:	See parameter table for details		Shell: POM engineering plastic
Accuracy:	±2.5% of total scale		Plunger: POM engineering plastic
Hysteresis:	Depends on switching point, min. 0.5L/Min		Spring: 316L stainless steel SUS1.4310
Switch setting scale:	The medium is water, the temperature is 20°C, and the installation position is calibrated in the horizontal installation state. The change of medium and temperature will slightly affect the switch value.	FP53…FP Material:	Magnet: Barium
LED light indication:	Active DC24V all provide LED display switch status		Housing: Anodized aluminum
Wiring:	Herssman joint (DIN43650)		Plunger: POM engineering plastic
output:	Passive Reed Switch, Capacity 24VDC/230VAC		Spring: 316L stainless steel SUS1.4310
output:	0.5A (3A special custom)	FP53…FA Material:	Magnet: Barium
Pressure resistance:	15bar (POM plastic) 50bar (aluminum type)		Housing: Stainless Steel
	50bar (bronze alloy) 100bar (stainless steel)		Plunger: POM engineering plastic
	Customized 200bar (optional)		Spring: 316L stainless steel SUS1.4310
Average pressure loss:	0.25bar(at 25L/min)	FP53…FK Material:	Magnet: Barium
Return difference:	It is related to the switch value, the minimum is 0.5L/min		Housing: Bronze alloy UNI EN 12165 CW617N
Medium temperature:	Max 90℃		Plunger: POM engineering plastic
Protection class:	IP65		Spring: 316L stainless steel SUS1.4310
		FP53…FB Material:	Magnet: Barium

Parameters Table

model type	Maximum flow	Variable range	G	L	H	B	X	weight
	L/min (water)	L/min (water)	mm	mm	mm	mm	mm	kg
FP53-008…A(k)008…	60	0.6(0.1)..8(7)	G1/4	93	61	30	12	0.22(0.53)
FP53-010…A(k)008…		0.6(0.1)..8(7)	G3/8		61	30	15	0.20(0.51)
FP53-015…A(k)008…		0.6(0.1)..8(7)	G1/2		61	30	15	0.18 (0.48)
FP53-020…A(k)008…		0.6(0.1)..8(7)	G3/4	105	65	35	15	0.23(0.65)
FP53-025…A(k)008…		0.6(0.1)..8(7)	G1		67	40	15	0.32(0.82)
FP53-008…A(k)015…		1(0.5)…15(13)	G1/4	93	61	30	12	0.22(0.53)
FP53-010…A(k)015…		1(0.5)…15(13)	G3/8		61	30	15	0.20(0.51)
FP53-015…A(k)015…		1(0.5)…15(13)	G1/2		61	30	15	0.18 (0.48)
FP53-020…A(k)015…		1(0.5)…15(13)	G3/4	105	65	35	15	0.23(0.65)
FP53-025…A(k)015…		1(0.5)…15(13)	G1	105	67	40	15	0.32(0.82)
FP53-015…A(k)028…		2(0.8)…28(25)	G1/2	93	61	30	15	0.18 (0.48)
FP53-020…A(k)028…	80	2(0.8)…28(25)	G3/4	105	65	35	15	0.23(0.65)
FP53-025…A(k)028…		2(0.8)…28(25)	G1		67	40	15	0.32(0.82)
FP53-020…A(k)070…	120	27(21)…70(66)	G3/4		65	35	15	0.23(0.65)
FP53-025…A(k)070…		27(21)…70(66)	G1		67	40	15	0.32(0.82)
FP53-032…A(k)…	150	0.6(0.1)..70(66)	G1 1/4	150	67	50	15	0.52 (1.02)
FP53-040…k	180	27(21)…70(66)	G1 1/2	159	95	54	20	2.5

Note: 1. (*) The parameters in brackets are reset points, and the parameters outside brackets are action points. If the lower limit alarm (monitoring flow is too small) refer to the reset point parameter. Upper limit alarm (monitoring flow over

??Large) refer to the action point parameter.

??2. The above parameters are obtained by installing the switch in a horizontal pipeline and testing with 20°C water as the medium. 3. The pressure on the upper gauge is the pressure rating under the 316L stainless steel material.

Selection table

FP53-	Plunger Flow Switch
	Applicable pipe diameter
		Threaded port G1/4 Nominal diameter DN8
		Threaded port G3/8 Nominal diameter DN10
		Threaded port G1/2 Nominal diameter DN15
		Threaded port G3/4 Nominal diameter DN20
		Threaded port G1 Nominal diameter DN25
		Threaded port G1 1/4 Nominal diameter DN32
		Connection method
			Female thread (female connector)
			External thread (male connector)
			Hose quick connector (please note the inner diameter of the hose when ordering)
			signal type
				24V±20%DC, 0.5A, 26W; active contact signal; normally open signal, adjustable range
				24V±20%DC, 0.5A, 26W; passive contact signal; normally open signal, adjustable range (no LED indicator)
				24V±20%DC, 0.5A, 26W; passive contact signal; normally closed signal single-point setting (no LED indicator)
				24V±20%DC, 0.5A, 26W; active power supply normally open + normally closed output, adjustable within the range (Hersman sealing treatment, flying lead lead-out method, cable length needs to be noted)
				230V±15%AC, 1A, 48W; passive contact signal normally open signal, adjustable within the range (no LED indicator)
				230V±15%AC, 1A, 48W; passive contact signal, normally closed signal, single-point setting (no LED indicator)
				380V±15%AC; passive contact signal, normally open signal, single-point setting (no LED indicator)
				380V±15%AC; passive contact signal, normally closed signal, single-point setting (no LED indicator)
				AC and DC universal type; passive contact signal normally open signal, adjustable within the range (no LED indicator)
				AC and DC universal type; passive contact signal normally closed signal single point setting (no LED indicator)
				Material description
					Normal flow is less than or equal to 5L (optional for specific customers)
					Setting range: 0.6…8L/min (0.1…7L/min for offline alarm)
					Setting range: 1…15L/min
					Setting range: 2…28L/min
					Setting range: 27…70L/min
					Electrical connection method
						Hessman terminal connector (DIN43650)
						(special option) VARIO
							Output two-way switch alarm point
The complete data of this selection table, please contact the sales staff or email to sales@kewill-auto.cn for complete samples.

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FP53 Series Plunger Flow Switch

Introduction

technical parameter

Parameters Table

Selection table