What are the functions of a semiconductor gas flow controller?
Release time：
10 May,2023
Summary
What are the functions of a semiconductor gas flow controller? Many friends may not be clear about this. In order to enhance everyone's understanding, the editor will give a specific introduction to this problem below. Interested friends can come and have a look! If you are also interested, you may come here to check it out.
Semiconductor gas flow controllers are also popular products now. However, many people still don't understand its functions. First of all, we need to know that semiconductor gas flow controllers can directly measure the mass flow rate of the medium passing through the flow meter, and can also measure the density of the medium and indirectly measure the temperature of the medium. Because the transmitter is an intelligent instrument, its core is a single-chip microcomputer, which can derive more than a dozen parameters for users based on the above three basic quantities. Due to its flexible configuration, powerful functions, and high cost performance, it is also the next generation of flow meters. Manufacturers have also made good use of the thermal diffusion principle. Thermal diffusion technology is a technology with excellent performance and high reliability under harsh conditions. Typical sensing elements include two thermistors (platinum RTDs), one is a velocity sensor and the other is an automatic compensation for gas temperature changes. In addition, you need to know that when the two RTDs are placed in the environment, the semiconductor gas flow controller is heated to a constant temperature higher than the ambient temperature, and of course, another one is to detect the ambient temperature.
The gas mass flow rate of the semiconductor gas flow controller is calculated based on the heat transfer of the sensing element. As the gas flow rate increases, the heat received from the medium increases. The temperature of the semiconductor gas flow controller decreases accordingly. To maintain a constant temperature, it is necessary and possible to increase the operating current through the mass flow controller, and the increased current is proportional to the flow rate of the medium. In fact, its function lies in small zero creep, high stability during operation, and short heating time. Simple digital I/O can display the flow rate or use a flow computer for control. Another point is its thermodynamic principle, high precision, and fast response. Tubular flow divider, not easy to block. It is also suitable for various high and low pressure pipelines. Of course, its characteristics are that it can preset multiple throttle curves and set the range as needed; or it can also withstand mechanical shocks and pressure fluctuations; the semiconductor gas flow controller can realize multiple communication methods and customized I/O functions, now its signal processing design and control valve design; stable flow control, less affected by process fluctuations. This is a regular manufacturer. Friends who want to order this product may choose here. I believe it will not disappoint you. The price here is reasonable, and the quality is guaranteed.
The above article content tells you about the functions of the semiconductor gas flow controller, and also shares a better manufacturer in the content. If you have this need, you can check it out, hoping to bring you help.
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