Air flow switch hvac
Description
Flow switch for controlling the flow of air or non-aggressive gases inside the ductwork in air-conditioning or air handling systems. Indicates when there is no flow or restricted flow in the duct by activating a switch. This control has a single pole double throw switch in it.
Application
Control and monitor air and non aggressive gases flow in ducts, chambers, etc.,of heating, cooling, and air conditioning equipment.
Features
● Renovated SPDT micro switch ensures the reliable switch function
● Stainless steel paddle
● Cut-in and cut-out
● Brass level
● IP65
Technical data
| Model | KAFS |
| Type of operation | On/Off,single-stage,micro switch |
| Flow rate switching | |
| - Cut-out | Min. 1.0 m/sec, Max. 8.0 m/sec |
| - Cut-in | Min. 2.5 m/sec, Max. 9.2 m/sec |
| Flow rate setting adjustment | Internal screw |
| Sensing element | Paddle |
| Paddle size | 3.2 x 6.9 in. (80 x 175 mm) |
| Paddle w/level - Length | 7.9 in. (200 mm) |
| Flow applications | Air and non aggressive gases |
| Paddle material | Stainless steel |
| Paddle level material | Brass |
| Permissible ambient temperature | |
| - Housing | -40℉ to 185℉(-40℃ to 85℃) |
| - Paddle | 14℉ to 185℉(-10℃ to 85℃) |
| Permissible ambient humidity | 10...90%RH,non-condensing |
| Cable entry | M18 fitting |
| Housing - Material | Base:Steel,galvanized; Cover:ABS,fire retardant or PC |
| - Color | white |
| - Protection | IP65 |
| Installation | Duct mounted |
| Ship weight | 0.7kg |
Installation
The flow switch should be mounted into a duct or chamber where the air paddle can freely point horizontally downwards. To avoid air swirl and paddle instability, straight zones should be provided for a length of 5 times the diameter of duct upstream and downstream from the installation location.
Note:
The units are factory calibrated to the minimum switch-off value. To increase the set value, adjust the range screw clockwise. Due to the risk of fracture at air speeds of higher than 5.0 m/sec, the paddle must be cut off on the marked side. When the paddle is cut off, the minimum cut-out value increases from 1.0 m/sec to 2.5 m/sec.
Electrical Wiring
Dimensions (mm)
FAQ
1 Q: What's the delivery time?
A: According to the specification and quantity of your order, generally 4
days for normal standard products within 10pcs.
2 Q:Are you manufacturer or trading company?
A: We are manufacturer with many years of experience.We have our
own factory.Welcome to visit our factory.
3 Q: Can we use our logo on the products?
A: Yes.We can provide OEM service.
4 Q: Do you have products with ex-proof certificate?
A: Yes,we can offer intrinsic-safety and flame proof certificates.
5 Q: What is the warranty of your products?
A: Normal is 12 months.
6 Q: What's the means of transport?
A: Express such as TNT,Fedex,DHL,UPS, or logistics by indicator.
Product Tags:
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Galvanized Steel Hvac Air Flow Switch Single Stage IP65 Images
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