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Classification of flow switches

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I. Application field of water flow switch
In the water supply and drainage system of the electrical industry, the water flow switch has an important engineering application value. The water flow switch is the key component in this water flow field. The magnetic induction design is used because it can realize the water and electricity isolation and directly load small power equipment, which can be widely used in water supply system, drainage system, water supply and drainage automation control and other fields. In order to meet the needs of practical engineering, the water flow switch is gradually being paid attention to, but the current literature on the application of water flow switch, this aspect is rarely discussed. This paper discusses the working principle, design, application and detection method of water flow switch.

II. Classification of water flow switches
There are many kinds of water flow switches, with different principles and various ways of use, so the classification is very complicated. Up to now, there is no unified regulation or relevant national standards. People usually stand at different angles, classify them by their outstanding side, and divide them by their working principles. They classify the principles, laws and effects of physics, chemistry and other disciplines as the basis of classification, and classify them according to the working principles of water flow switches It can be roughly divided into the following categories:

V10SS Paddle Flow Switch with Stainless Steel Body

V10SS Paddle Flow Switch with stainless steel structure

The V10SS flow switch utilizes a rugged, hermetically sealed reed swit...


(I) classification by output electric signal
According to the output electric signal, this classification method can be divided into two types: switch type water flow switch and pulse type.

Flap Type Flow Switches

GE-311 Smart Flap Type Flow Switches

GE-311 Smart Flap Flow Switch, DN15 DN20 paddle flow switch...


1.The switch type water flow switch is a simple and practical electrical appliance that can directly load small power and common voltage without additional circuit. The switch type water flow switch can be divided into: normally open, normally closed, normally open and normally closed according to the contact; such water flow switches include: rotor type water flow switch, piston type water flow switch, flap type water flow switch, target type water flow switch, differential pressure type water flow switch. 
2.The pulse water flow switch outputs the pulse signal, which is collected and transformed into the current signal to realize the control. Although it can be used in high-precision places, it is too expensive and inconvenient to use. Impeller type water flow switch belongs to this type.
Piston Type Flow Switch

Adjustable Piston Inline Flow Switches

GE-342 Adjustable Piston flow switch for liquid, Oil, or gaseous media...


(II) Classification by installation and application mode
According to the type of installation, it can be divided into vertical installation, horizontal installation and arbitrary installation!
1. The water flow switch installed vertically can work only when it flows from the bottom to the top, such as rotor type water flow switch.
2. The water flow switch installed horizontally can only work when installed horizontally, such as flap type water flow switch.
3. There are many kinds of water flow switches installed in any way: impeller type water flow switch, differential pressure type water flow switch, target type water flow switch and piston type water flow switch.

Brass rotor impeller type Flow Sensor

GE-302D Brass rotor impeller type Flow Sensor

BSP1/2" BSP3/4" Male Thread Water Flow Sensor, produced by Brass mate..


(III) Classification according to the internal structure of water flow switch
According to the internal structure of the water flow switch, it can be divided into piston type, flap type, target type, rotor type, differential pressure type and impeller type.

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