Switch for liquid flow detection for 3/4 inch pipe

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Flow Detection from 1.5L ~ 2.0L / min. Allows flows of up to 20L / min. Designed without springs, but with magnet: Safe and reliable.

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        *** SWITCH Switch for liquid flow detection for 3/4 inch pipe ***

1. Detection of flows of at least 1.5L ~ 2.0L / min, and allows flows of up to 20L / min.
2. Product designed without springs, but with the force of magnet repulsion: it is safe and reliable.
3. It can be applied to the electric water heater of rapid heating, which can realize the water supply, cut off and turn off the water. The effect of energy saving is remarkable.
4, Can operate more than 10 million times, with long life and reliability.

Operating principle:

The water flow switch is a very important component in the instant electric water heater. When the water inlet flows more than 1.75L / min, the circuit turns on and the electric water heater starts to heat up, when the water inlet stops, the water heater stops working.

The disadvantage of the traditional spring water flow switch (mechanical switch) is that a large flow is required to activate the switch. In addition, after the switch is operated for a period of time, wear occurs, which causes a decrease in sensitivity or even the inability to return to the position, which will not be safe and the risk of dry burning.

The magnetic floating water flow switch controls the on / off of the blade switch through the magnet to perform passive contactless work, which is safe and reliable.

Application of the product:

Electric water heater of instant heating type, electric water heater of heat storage type, can perform water supply and electric power supply, water supply and power supply, allowing users To bathe in a state without electricity, which guarantees the absolute safety of the bathroom.

It can also be used in air conditioners, dishwashers and several hydroelectric connections. A water flow switch, also known as a flow switch, flow switch or flow sensor, is used to detect a flow in a pipe or to stop an output signal to protect a product from the system.

Its structure and operating principle is based on a magnetic ring on the piston. When it is working, the water pressure pushes the piston. When the internal magnetic ring of the piston is pushed to the Reed switch position, the reed switch generates a signal. These switches have a stable performance and are widely used in various types of equipment.

The flow switch is used for water circulation control, water inlet and outlet control, water heating control, water pump switch control, solenoid valve on / off control or discharge and supply of water energy, and water supply control for electric water heaters, solar water heaters, air conditioners and other water systems. A sensor element that converts the water flow into a switched electrical signal after reaching a certain flow rate.

The flow switch consists of a magnetic core, a return spring, a forged or polycarbonate copper housing and a sensor. The outer casing is made of forged copper H58 or polycarbonate, the magnetic core is made of permanent neodymium iron boron magnet and the magnetic control switch of the sensor is an imported medium power component. Both the inlet end and the outlet end are standard pipe threads G3 / 4 "inch.

Operating principle:

When the water flow in the pipe is greater than 1.75L / min, the magnetic core generates a displacement under the action of the water flow and activates the magnetic source to generate a magnetic control to make the switching signal "1" of the sensor output, which enters the control system of the equipment. After the power amplification (an external relay or transistor), the purpose of the water flow control is realized. When the water flow in the pipe is less than 1.75L / min, the magnetic core pulls back the magnetic source under the action of the return spring thrust, so that the sensor emits a "0" switch signal to stop the system. The flow switch has the advantages of high sensitivity and durability.

Main technical parameters:
- Appropriate ambient temperature = greater than 1 ° C
- Appropriate working temperature = less than 60 ° C
- Minimum start flow = 1.75L / min
- Maximum flow rate = 20L / min
- The maximum pressure of the casing is = 1.2Mpa
- Signal output load 24VDC / 0.5A, 36VAC / 0.3A or 220VAC / 50mA

Range and operating conditions:
(1) Ambient temperature greater than 0 ° C. Do not hit the housing. Keep away from magnetic objects.
(2) The output of the signal is a switching amount, so the connection mode of the control object must also be a switch control relationship.
(3) The power of the control object must not be greater than the load capacity of the signal.


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Switch for liquid flow detection for 3/4 inch pipe

Switch for liquid flow detection for 3/4 inch pipe

Flow Detection from 1.5L ~ 2.0L / min. Allows flows of up to 20L / min. Designed without springs, but with magnet: Safe and reliable.