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What are the flow switches?

Views: 0     Author: Site Editor     Publish Time: 2021-08-13      Origin: Site

What are the flow switches?

The flow switch is mainly installed in water, oil and other liquids or plug-in medium pipes to monitor the water flow in the water supply system. At this time, when the water flow is higher or lower than a set point in time, the device will send the output alarm signal to the device, and the system will make the corresponding indication action after obtaining the signal, so as to avoid or reduce the "dry burning" of the host. Its unique streamlined structure design, accurate and stable performance, is widely used in pipeline flow monitoring and large, medium and small equipment cooling and lubrication system.


Here is the content list:

l Definition of the switch

l The purpose of the switch

l Working principle of the switch

l Advantages of the switch

Piston Type Automatic Liquid Digital Flow Switches For Water


Definition of the switch

It is a kind of sensor controller which uses various principles to measure the flow of the medium in the pipeline and transmits the on-off signal to the back-end equipment in real time.


The purpose of the switch

It instructs the switch of the system according to the flow. Set the upper or lower limit for the flow switch, when the flow reaches this limit, the flow switch sends a signal or alarm, and the system will run or stop. Generally, systems that require flow will use a flow switch. According to the different systems, as well as the flow switch model and other factors, the place of use is also different, depending on the specific situation.


Working principle of the switch

When there is water flow in the water flow switch and the water flow is ≥ 1.0L/min, the magnetic core in it is driven by the flow to produce displacement, and the magnetic core displacement drives the magnetic source to produce magnetic control, which makes the water flow switch output "pass" signal. The automatic selection of the flow switch is included. The signal is inputted 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 flow switch outputs the "off" signal. The control system produces the opposite control effect. When the water flow in the pipeline is less than the 1L/min flow, the magnetic core drives the magnetic source back under the action of the reset spring thrust, which makes the sensor output the " 0 " switch signal and stops the work of the system. It has the advantages of high sensitivity and strong durability. 


Advantages of the switch

1. The low flow velocity (volume) operation of the flow switch;

2. The structure of the switch is simple, and the action contact surface is small;

3. The flow of low content debris in the flow switch is also applicable;

4. When the special debris in the switch is blocked, it can be removed on-line.


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