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How does a water flow switch work?

Views: 0     Author: Site Editor     Publish Time: 2021-10-10      Origin: Site

How does a water flow switch work?

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:

  • Working principle of the water flow switch

  • Application of Water flow switch in Air conditioning system

  • Application field


Working principle of the water flow switch

The water flow switch is designed based on the principle of temperature change of the detection head. A heating sensor and a sensible heat sensor are installed in the probe and are in contact with the medium. When measuring, the heating sensor emits constant heat. When there is no medium flow in the pipe, the heat received by the sensible heat sensor is a constant value. When there is medium flow, the heat received by the sensible heat sensor will change with the flow rate of the medium. The sensible heat sensor converts the temperature difference signal into an electrical signal, and then converts it into the corresponding contact signal or analog signal through the circuit.


Application of Water flow switch in Air conditioning system

The water flow switch is widely used in water chillers and water systems of air-conditioning engineering. It can ensure the safe and efficient operation of air-conditioning systems. Usually, the flow switch can only qualitatively ensure the safe and efficient operation of the air conditioning system, but can not quantitatively and accurately set the flow value when the flow switch is closed and turned off. The flow switch is a device that automatically controls and protects the water flow. When the water flow changes, the force produced by the water flow on the target makes the lever rotate and the control circuit closes or disconnects, so as to achieve the purpose of automatic control. The water flow switch is widely used in water systems of chillers and air conditioning projects (hereinafter collectively referred to as air conditioning systems).

flow switch

Application field

(1) the ambient temperature is not lower than 0 ℃. Do not hit the shell. Stay away from magnetic objects.

(2) the output of the signal is the switch value, so the connection mode of the control object must also be the switch control relationship.

(3) the power of the control object shall not be greater than the signal load capacity.

(4) this device is a water medium control device and can not be used for other media control. Various specifications and sizes.


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