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
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


modelMaximum flowVariable range (*)DNLHBBX
L/min (water)L/min (water)mmmmmm(10bar)mm(16bar)mmmm
FP58-010…A(k)008…600.6(0.1)..8(7)109361509014
FP58-015…A(k)008…600.6(0.1)..8(7)159361599514
FP58-020…Ak008…600.6(0.1)..8(7)201056510510516
FP58-025…Ak008…600.6(0.1)..8(7)251056711511516
FP58-010…Ak015…601(0.5)…15(13)109361509014
FP58-015…Ak015…601(0.5)…15(13)159361599514
FP58-020…Ak015…601(0.5)…15(13)201056510510516
FP58-025…Ak015…601(0.5)…15(13)251056711511516
FP58-015…Ak028…602(0.8)…28(25)159361599514
FP58-020…Ak028…802(0.8)…28(25)201056510510516
FP58-025…Ak028…802(0.8)…28(25)251056711511516
FP58-020…k070…12027(21)…70(66)201056510510516
FP58-025…Ak070…12027(21)…70(66)251056711511516
FP58-032… Ak…1500.6(0.1)..70(66)321506714014018

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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