The difference between an electronic flow switch and a thermal flow switch

Generally, electronic flow switches are built-in relays, and the mechanical settings are different, and the output switching amount refers to the relay output, not the transistor output. Thermal flow switches are designed using the principle that the temperature of the probe changes creates a difference. In terms of design principle and application, the two are the same, but different manufacturers have different names.

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Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

Summary. This is a question that is also being asked by many people. In fact, the principle of flow switch and water flow switch is the same, and it has little to do with the name, because some water flow switches are also called flow switches or water flow sensors.

There are two kinds of water flow switches, one is baffle type and piston type, and the other is easily confused is called flow meter.

Here, people will mistakenly think that the flow switch can measure the flow of water, and the number will be displayed. Not really. The flow switch only gives a signal alarm when there is water or no water passing.

The difference between a flow switch and a water flow switch.

This is a question that is also being asked by many people. In fact, the flow switch is the same as the water flow liquid switch, and it has little to do with the name, because some water flow switches are also called flow switches or water flow sensors. There are two kinds of water flow switches, one is baffle type and piston type, and the other is easily confused is called flow meter.

If you touch it here, you will mistakenly think that the flow switch can measure the flow of water, and it will display the number. Not really. The flow switch only gives a signal to report the alarm when there is water or no water passing.

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Changsha Shengen Automation.

Features: Compared with the traditional vane flow switch and piston flow switch, the thermal mass flow switch has higher sensitivity.

The installation position is not restricted, there is no abrasion of the mechanical structure, and the liquid containing impurities can be measured with different materials, which is suitable for environmental measurement of different acid and alkaline liquids.

The flow rate and flow rate can be adjusted according to the on-site needs, regardless of large or small pipe diameter.

It is suitable for hydropower generation, refrigeration and air conditioning, electronics, chemical, shipbuilding, food, pharmaceutical, optical, semiconductor and other industries.

Shengen Automation.

1. Ultrasonic flowmeter: The propagation time method and the Doppler effect method are commonly used methods by ultrasonic flowmeters to measure the average velocity of the fluid. Like other velocity gauges, it is a gauge that measures volumetric flow rates.

It is an obstruction-free flow meter that does not need to be plugged in if the ultrasonic transmitter is installed outside the pipeline. It is suitable for almost all liquids, including slurries, with high precision. However, the contamination of the pipes can affect the accuracy.

The average flow rate of the fluid felt by the rotor is used to derive the flow rate or total amount. Turbine flow meters accurately measure clean liquids and gases. Like PD flow meters, turbine flow meters also create irreversible pressure errors and also require moving parts.

3. Electromagnetic flowmeter: When the conductive fluid of the electromagnetic flowmeter flows through the electromagnetic field, the velocity of the fluid can be obtained by measuring the voltage. Electromagnetic flowmeters have no moving parts and are not affected by fluids.

Conductive liquids are measured with high accuracy at full tubes. Electromagnetic flowmeters can be used to measure the flow rate of slurry fluids.

4. Differential pressure flowmeter (DP): It is the most common flow technology, including orifice flowmeter, V-cone flowmeter, venturi tube and sonic nozzle. DP flow meters can be used to measure the flow rate of most liquids, gases, and vapors.

The DP flow meter has no moving part, which is widely used and easy to use. But when it is blocked, it creates a loss of pressure that affects accuracy. The accuracy of the flow measurement depends on the accuracy of the pressure transmitter.

5. Vortex flowmeter: The vortex flowmeter is to place a non-streamlined vortex generator in the fluid, and the speed of the vortex is proportional to the speed of the fluid, so as to calculate the volume flow. Vortex flowmeters are suitable for measuring liquids, gases or vapors.

It has no moving parts and no dirt issues. Vortex flow meters are noisy and require a high flow rate of the fluid to create vortices.

6. Thermal mass flow meter: measure the fluid velocity by measuring the increase of the temperature of the fluid or the decrease of the thermal sensor. Thermal mass flow meters have no moving parts or holes and can accurately measure the flow rate of gases.

Thermal mass flow meters are one of the few techniques that can measure mass flow and are one of the few that are used to measure the flow rate of large bore gases.

Throttle. Speed control valve. Benefit-flow valves. Diverter manifold valves.