Keram (Nanjing)ELECTRICAL Equipment Co., Ltd.
Keram (Nanjing)ELECTRICAL Equipment Co., Ltd.
Add to Cart
KWFS target flow switch is a type of shell made of ABS and PC composite materials, which can effectively protect against high-temperature corrosion. Meanwhile, its blades are made of stainless steel, which can well meet the needs of customers.
It is mainly used to measure and control the flow of liquid flowing through pipelines, such as water, ethylene glycol, etc. The typical application of the target type flow switch series is to use it in places where interlocking action or disconnection protection is required. The series of flow switches uses a large load single pole double throw (SPDT) open target switch, featuring fast action characteristics, ensuring the instantaneity of the flow switch.
Control and monitor liquid flow of boilers, pumps, etc., of heating, cooling, and air conditioning equipment.
Features
● Flow control of water and normal media
● Renovated SPDT micro switch ensures the reliable switch function
●15(8A)250VAC switch rating
● IP65, class I enclosure
● Set point adjustable
● Stainless steel paddle
● Brass material
● Max. liquid temp 120℃
● Max working pressure 13.5Ba
| Type of operation | On/Off,single-stage,micro switch |
| Output | SPDT 15(8A) 24/250VAC |
| Flow rates | See flow rate table |
| Flow rate setting adjustment | Internal screw |
| Sensing element | Paddle |
| Liquid applications | Hot, chilled, well, pool and sea water,Brine or ethylene glycol |
| Parts material in contact with fluid | Brass |
| Paddle material | Stainless steel |
| Liquid temperature | -20℃~120℃ |
| Permissible ambient temperature | -40℃~85℃ |
| Permissible ambient humidity | 10…90% RH, non-condensing |
| Cable entry | M18 Fitting |
| Housing | Fire Resistance ABS or PC |
| Protection | IP65 |
| Color | White |
| Weight | 1.0Kg |
Types of Model
| Model | Connection |
| KWFS-1 | 1/2" -14 NPT |
| KWFS-2 | 3/4" -14 NPT |
| KWFS-3 | 1" -11½ NPT |
| Line Pipe Size(in.) | 1 | 1-¼ | 1-½ | 2 | 2-¼ | 3 | 4 | 4Z | 5 | 5Z | 6 | 6Z | 8 | 8Z | |
| Min.flow | Flow Increase | 4.2 | 5.8 | 7.5 | 13.7 | 17.6 | 27.5 | 64.7 | 35.2 | 125 | 57.01 | 190.0 | 74.0 | 374.7 | 204.7 |
| Flow Decrease | 2.5 | 3.7 | 5.0 | 9.7 | 11.9 | 19 | 50.1 | 26.9 | 101.1 | 41.0 | 158.0 | 54.0 | 319.7 | 170.0 | |
| Max.flow | Flow Increase | 9.2 | 13.3 | 17.6 | 26.9 | 30.8 | 50.2 | 127.6 | 81.0 | 245.0 | 118.0 | 374.7 | 144.0 | 759.5 | 415.0 |
| Flow Decrease | 8.1 | 12.5 | 16.3 | 25.1 | 28.6 | 47.1 | 122.0 | 76.2 | 234.7 | 111.0 | 359.7 | 134.7 | 729.6 | 400.6 | |
Note:
①For flow rates with suffix "Z", the 6 inch paddle must be installed.
②The flow rate unit of the above table is GPM (m /h)
The flow switch can be installed in every position far from elbows or throttlings, 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 minimum 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.
| Install Paddle | |
| Pipe | NO. |
| 1" | 1 |
| 11/4" | 1 |
| 11/2" | 1 |
| 2" | 1,2 |
| 21/2" | 1,2 |
| 3" | 1,2,3 |
| 4" | 1,2,3 |
| 4"Z | 1,2,3,4 |
| 5" | 1,2,3 |
| 5"Z | 1,2,3,4 |
| 6" | 1,2,3 |
| 6"Z | 1,2,3,4 |
| 8" | 1,2,3 |
| 8"Z | 1,2,3,4 |