application for boiler pump waterproof liquid flow switch

application for boiler pump waterproof liquid flow switch
1.about us
Keram(Nanjing) Controls & Equipments Co;,Ltd. Was founded in 2000,a professional manufacturer and supplier of controls equipment and products design. Our products are related to gas safety control,temperature control,time control,over-heating control, pressure and temperature controls used on refridgeration and compressor,water pressure switch and all kinds of solenoid valves and safety valves.
New Building Of Keram Controls
keram control add more high precision CNC machine to improve product reliability and efficiency
2.Description
Waterproof liquid flow switches.
3.Application
Control and monitor liquid flowof boilers, pumps, etc., of heating,cooling, and air conditioningequipment.
4.Features
1.Flow control of water and normal media 2.Renovated SPDT micro switch ensures the reliable switch function
3.15(8A)250VAC switch rating4.IP65,class I enclosure
5.Setpoint adjustable 6.Stainless steel paddle
7.Brass material8.Max. liquid temp 120 ℃
9.Max working pressure 13.5 bar
Types Of Model
Model: KWFS-1 Connection: 1/2"-14NPT
Model:KWFS-2 Connection:3/4"-14NPT
Model: KWFS-3 Connection:1"-11 ½ NPT
5.Specifications Type of operationOn/Off,single-stage,micro switchOutputSPDT 15(8A) 24/250VACFlow ratesSee flow rate tableFlow rate setting adjustmentInternal srewSensing elementPaddleLiquid applicationsHot,chilled,well,pool and sea water,Brine or ethylene glycolParts material in contact with fluidBrassPaddle materialStainles steelLiquid temperature-20 ℃~120 ℃Permissible ambient temperature-40 ℃~85 ℃Permissible ambient humidity10...90 %RH,non-condensingCable entryM18 FittingHousingFire resistance ABS or PCProtectionIP65ColorWhiteWeight1.0Kg
6.Liquid Flow Rate Table Line Pipe Size(in.)11- ¼ 1- ½ 22- ½ 344Z55Z66Z88ZMin.
flowFlow Increase
1 &2Connected
4.2
(1.0)5.8
(1.3)7.5
(1.7)13.7
(3.1)17.6
(4.0)27.5
(6.2)64.7
(14.7)35.2
(8.0)12.5
(28.4)57.01
(12.9)90.0
(43.1)74.0
(16.8)374.7
(85.1)204.7
(46.5)Flow Decrease
1&3Connected2.5
(0.6)3.7
(0.8)5.0
(1.1)
13.7
(2.2)11.9
(2.7)19
(4.3)50.1
(11.4)26.9
(6.1)101.1
(22.9)41.0
(9.3)158.0
(35.9)54.0
(12.3)319.7
(72.6)170.0
(38.6)Max.
flowFlow Increase
1&2Connected9.2
(2.1)13.3
(3.0)17.6
(4.0)26.9
(6.1)
30.8
(7.0)50.2
(11.4)127.6
(29.0)81.0
(18.4)245.0
(55.6)118.0
(18.4)374.7
(85.1)144.0
(32.7)759.5
(172.5)415.0
(94.2)Flow Decrease
1 &3Connected8.1
(1.9)12.5
(2.8)16.3
(3.7)25.1
(5.7)28.6
(6.5)471
(10.7)122.0
(27.7)76.2
(17.3)234.7
(53.3)111.0
(25.2)359.7
(81.7)134.7
(30.6)
729.6
(165.7)400.6
(90.8)
Note!!!: For flow rated with suffix "Z",the 6 inch paddle must be installed.
7.Electrical Wiring
Innstallatio: The flow switch can be installed in every position far from elbows or throttling,with arrow on flow direction.If pipe is vertical, recalibrate range to balance paddle weight.If the device is downwards mounted,take care to slags and apply it in a straight pipe that is far from filters,valves,etc.,with length at least 5 times the diameter of pipe upstream and downstream the unit.
Note!!!: The flow switch is factory calibrated at its minumum sensitivity.To increase the set valve,turn the adjustment screw clockwise.The cut-out valve must be ≥the minimum flow necessary to guarantee the protection of the plant.
8.DimensionsPaddles