Semiconductor gas flow controllers currently exhibit good linearity
Release time：
07 Apr,2023
Summary
With the continuous advancement of scientific and reasonable technologies, various fields have also achieved great development trends. The future development trend of semiconductor gas flow controllers is also very good, so the demand is constantly increasing, and many manufacturers have been added to the market. As a manufacturer, it is also very necessary to describe the common problems in the operation of semiconductor gas flow controllers here? Interested friends can take a look together.
Before using this semiconductor gas flow controller, there are still many problems that accompany everyone, so in order to better use them, it is necessary to understand some of its key knowledge points. First, you need to know that a semiconductor gas flow controller is a product that can control a certain amount of gas, especially suitable for controlling the flow rate of multiple processes and controlling different gas ratios. Nowadays, this product has a wide range of applications and a wide range of pressure coverage. Our company's products can be used from vacuum pumps to 10MPa; suitable for various gaseous substances (including some corrosive gases such as HCL); wide range of flow coverage. But during use, remember that if the working properties of the semiconductor material gas flow controller change (such as changes in substances, large changes in working temperature, etc.), the instrument panel needs to be zeroed. At the same time, the instrument panel plastic soft tube needs to be horizontally assembled and calibrated with a level. Otherwise, it may increase the impact of changes in operating conditions on zero drift. The external sound card structure of the high-pressure flow meter cannot vibrate and swing, so it cannot be used on ships. Or calculate the massive data of the working pressure range 0-100kg/cm2 and flow rate 0-7 standard liters/hour (gas) by expression calculation, use the smaller law of two to calculate the linear regression equation, and the correlation rλ value is all within the range of 0.999～0.9999.
Naturally, semiconductor gas flow controllers currently have good linearity. However, the more linear flow and the wider the range, the heavier the discrete system, so it is generally recommended to control the range within 0-4 standard liters/hour (gas) to ensure good linearity. In order to accurately measure large flow rates under the premise of ensuring linearity, separation principles can be used to expand the detection range of the instrument panel. By using bypass pipes, Venturi tubes, hydraulic seals, etc., the detection range can be expanded to tens, hundreds, thousands of standard liters per hour, and can reach hundreds of thousands of standard cubic meters. The semiconductor gas flow controller also uses the thermal diffusion coefficient principle in operation. Thermal diffusion theory is a professional technology with good performance and high stability under strict conditions. Of course, there are also some other typical sensor components, mainly including two thermistors (platinum RTD), one is a speed sensor, and the other is when two RTDs are placed in the medium, the semiconductor gas flow controller is heated to a temperature higher than the ambient temperature. This refers to a reliable manufacturer. Friends who need to purchase this product can choose here. I believe this will not let you down. The price here is affordable and the quality is guaranteed.
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