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Introduction

Principle & Structure

In-line flange mount, 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.

Features

Minimal pressure loss, good repeatability, anti-fouling ability. The mechanical part is completely isolated from the electronic part, with a switch setting scale for easy setting. Users do not need to set on site, LED display switch action status. Large switching capacity, 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
Accuracy:	±2.5% of total scale
Hysteresis:	Depends on switching point, min. 0.5L/Min
Switch setting scale:	It is in the horizontal installation state when the medium is water, the temperature is 20 °C
	Mounting position, medium and temperature variation for calibration
	The switch value will be slightly affected.
LED display:	Active DC24V all provide LED display switch status
Wiring:	Herssman joint (DIN43650)
output:	Passive Reed Switch, Capacity 24VDC / 250VAC
output:	0.5A (3A special custom)
Pressure resistance:	10bar&16bar, high pressure customized type is agreed upon separately
Average pressure loss:	0.25bar(at 25L/min)
Medium temperature:	Max 90℃
Protection class:	IP65&IP67
Material:	Housing: stainless steel 1.4301 (304)
	Stainless steel 1.4435 (316L)
	Plunger: POM Engineering Plastic & Stainless Steel 1.4435(316L)
	Spring: 316L stainless steel SUS1.4310
	Magnet: Barium

model	Maximum flow	Variable range (*)	DN	L	H	B	B	X
	L/min (water)	L/min (water)	mm	mm	mm	（10bar）mm	（16bar）mm	mm
FP58-010…A(k)008…	60	0.6(0.1)..8(7)	10	93	61	50	90	14
FP58-015…A(k)008…	60	0.6(0.1)..8(7)	15	93	61	59	95	14
FP58-020…Ak008…	60	0.6(0.1)..8(7)	20	105	65	105	105	16
FP58-025…Ak008…	60	0.6(0.1)..8(7)	25	105	67	115	115	16
FP58-010…Ak015…	60	1(0.5)…15(13)	10	93	61	50	90	14
FP58-015…Ak015…	60	1(0.5)…15(13)	15	93	61	59	95	14
FP58-020…Ak015…	60	1(0.5)…15(13)	20	105	65	105	105	16
FP58-025…Ak015…	60	1(0.5)…15(13)	25	105	67	115	115	16
FP58-015…Ak028…	60	2(0.8)…28(25)	15	93	61	59	95	14
FP58-020…Ak028…	80	2(0.8)…28(25)	20	105	65	105	105	16
FP58-025…Ak028…	80	2(0.8)…28(25)	25	105	67	115	115	16
FP58-020…k070…	120	27(21)…70(66)	20	105	65	105	105	16
FP58-025…Ak070…	120	27(21)…70(66)	25	105	67	115	115	16
FP58-032… Ak…	150	0.6(0.1)..70(66)	32	150	67	140	140	18

Note: 1. The parameters in the above brackets are the reset points, and the parameters outside the brackets are the action points. If the lower limit alarm (monitoring flow is too small) refer to the reset point parameter. The upper limit alarm (too large monitoring flow) refers to the operating point parameter.

2. The above parameters are obtained by installing the switch vertically in the 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

FP58-	Flange type flow switch
	Applicable pipe diameter
		Flange interface DN10 Nominal diameter DN10
		Flange interface DN15 Nominal diameter DN15
		Flange interface DN20 Nominal diameter DN20
		Flange interface DN25 Nominal diameter DN25
		Flange interface DN32 Nominal diameter DN32
		Applicable pipe diameter special agreement
		Connection method
			Flange connection
			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)
				No output unit is only used for instantaneous flow trend indication
				Material description
					Stainless steel 1.4301(304) Liquid body
					Stainless steel 1.4435(304) liquid body
					Alarm setting
						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
							Hessman terminal connector (DIN43650)
							(special option) VARIO
								Output two-way switch alarm point
								Instantaneous flow trend indication (special option)
								IP67 (special option)
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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FP58 Series Flange Type Plunger Flow Switch

Introduction

technical parameter

Selection table