The flow switch is mainly installed online or plug-in in the water, gas, oil and other medium pipelines to monitor the water flow in the water system. When the water flow is higher or lower than a certain set point, the output alarm signal is triggered and transmitted to the unit, and the system can make corresponding indication action after obtaining the signal. Avoid or reduce the "dry burning" of the main engine.

Flow switch is based on the flow to command the switch of the system.

Set the upper limit or lower limit for the flow switch. When the flow reaches the limit, the flow switch will send a signal or alarm, and the system will run or stop. Generally, flow switches are used in systems requiring flow.

According to the different system, as well as the flow switch model and other factors, the use of the place is also different, according to the specific situation.

Working principle of flow switch

Working principle of water flow switch when there is water flow in the water flow switch and the water flow rate is greater than or equal to 1.0 L / min, the magnetic core in the water flow switch is driven by the water flow to produce displacement, and the displacement of the magnetic core drives the magnetic source to produce magnetic control effect, which makes the water flow switch output "flux" signal. The signal is input into the control system of the equipment, and the control function is realized by the control system. When the water flow is less than the starting flow, the water flow switch outputs the "off" signal. The control system has the opposite control effect. In other words: when the water flow in the pipeline is greater than 1 L / min, the magnetic core will shift under the action of water flow and drive the magnetic source to produce magnetic control effect, so that the sensor will output "1" switch signal, which is input to the equipment control system, and the purpose of water flow control will be realized after power amplification. 0 The flow switch has the advantages of high sensitivity and strong durability.

Advantages of flow switch

（1） Low flow rate (quantity) action of water flow switch

（2） The water flow switch has simple structure and small contact surface

（3） The flow switch can also be used for low content debris flow

（4） When the water flow switch is blocked by special debris, it can be removed online