Flow Switch Control Working
Flow switch is used to monitor fluid flow rate in closed pipe and then provide switch ON/OFF output signal as set point. When flow rate is higher or lower than set point, water flow switch will transmit switch or alarm signal to control system. Control system will do corresponding action to control water flow accordingly for example, when flow rate is over upper limit or lower limit, flow switch will produce switch signal to open pump or close pump.
Flow switches are developed on the basis of flow meters and flow sensors. A whole of flow switch usually requires two parts: flow measuring part and switch signal module. Switch signal is sent on the value of flow rate. Thus,the real-time flow rate is a deciding factor of the accuracy of flow switch.
Flow switch looks simple to manufacture. But in fact, it is not easy. Many companies are supplying flow switches,but many of them can't provide a reliable flow measuring unit with good accuracy. By contrast, we have dealt with flow instruments for over decades of years and have accumulated rich experience in design and making. We are your reliable partner.
Flow Switch Types
In the past, water flow switches mainly have paddle flow switch, magnetic flow switch, inline flow switch, vane flow switch, etc. They belong to mechanical flow switch. Then new electronic digital flow switches are releasing and mainly includes thermal dispersion flow switch and ultrasonic flow switch. Our flow switches have been used for water pump, boiler, sprinkler, shower, water heater, air conditioning etc.
Electronic flow switch has no moving parts, thus it features long life, long-term stable performance,ultra low maintenance, etc. We mainly provide thermal flow switch for water, oil and gas.(a link). Of course, if require high class electronic flow switch, you may consider our ultrasonic flow switch and its price is a little higher than thermal type.
As different fluid, flow switches can be used for liquid and air/gas. The liquid contain chiller water, hot water, air, oil, etc.
As material, flow switches are made of PVC,PTFE,POM, brass and stainless steel. POM and stainless steel can be used for food grade, especially POM inline flow switch can meet FDA standard. PTFE flow switch with PVC body can be used for pool, SPA, sea water, etc. PTFE flow switch can be used for chemical and anti-corrosive.
As installing way, there are three kinds: inline, insertion and clamp on. Clamp on way is only available with ultrasonic flow switch.
The flow switch that we can make as below:
- Paddle Type Flow Switch
- Inline Magnetic Flow Switch
- Piston Type Flow Switch
- Thermal flow switch
- Ultrasonic Clamp on flow switch
Our flow switches have been used as below:
- Boiler flow switch (Water Provide,e.g. gas boiler)
- Fire Sprinkler flow switch
- Oil flow switch
- gas flow switch
- Air flow switch
- Water pump switch
- Shower flow switch
- Pool flow switch
- Chill/hot water flow switch
- Potable drinking Water
As a professional manufacturer,we always pursuit to provide good performance product with high cost-effect solution. If you have any special requirement,please feel free to contact us.