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Features of hydrogen flow meter measurement, come and collect it!

Features of hydrogen flow meter measurement, come and collect it!

What are the characteristics of hydrogen flow meters? Let's analyze them together. High precision: Hydrogen flow meters have high-precision flow measurement capabilities, measuring flow ranges from tiny quantities to large flow ranges, with measurement accuracy reaching 0.5%. High sensitivity: Hydrogen flow meters can measure tiny flows as low as 0.01 sccm, as well as higher flow ranges, exhibiting good sensitivity and dynamic responsiveness. Long lifespan: Hydrogen flow meters, due to the low density of the liquid, can be used for a long time and are not easily worn or damaged. Simple structure: Hydrogen flow meters have a simple structure, are easy to install and maintain, and can be used in high-pressure, high-temperature, and other harsh environments. Multifunctional: Hydrogen flow meters have multiple functions such as manual adjustment, digital voltage signal output, and alarms, facilitating real-time monitoring and control of gas flow. Principle of hydrogen flow meters: Hydrogen flow meters utilize a thermal sensor to measure hydrogen. When hydrogen passes through the probe of the hydrogen flow meter, it causes a temperature change in the thermal sensor. This change is detected to measure the flow of hydrogen. The probe of the hydrogen flow meter contains a thermal sensor, usually consisting of a miniature metal filament, which...

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2023

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05

What are the functions of a semiconductor gas flow controller?

What are the functions of a semiconductor gas flow controller?

What are the functions of a semiconductor gas flow controller? Many people may not be clear about this. To enhance everyone's understanding, the editor will give a specific introduction to this problem below. Those who are interested can come and have a look! If you are also interested, you may come here to check. Semiconductor gas flow controllers are also relatively popular products now. However, many people still do not understand its function. First of all, we need to know that the semiconductor gas flow controller 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 deduce more than a dozen parameters for users based on the above three basic quantities. Because of its flexible configuration, powerful functions, and high cost performance, the mass flow meter is also the next generation of flow meters. Manufacturers have also made good use of the principle of thermal diffusion. 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 ??high

10

2023

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05

What are the advantages of semiconductor gas flow controllers?

What are the advantages of semiconductor gas flow controllers?

The semiconductor gas flow controller industry has a bright future because it offers many benefits to businesses, making it very popular with customers. To help people learn more about it, let's discuss the advantages of semiconductor gas flow controllers. Many people are still unfamiliar with the basic information about semiconductor gas flow controllers. Therefore, as a manufacturer, we need to briefly explain that when using a semiconductor gas flow controller, you are certainly familiar with flow measurement devices that measure mass flow in pipelines. When the pressure and temperature of the measured liquid change significantly, measuring only the volumetric flow rate will also result in a large measurement error due to changes in the liquid density. In volumetric and differential pressure flow meters, the density of the measured liquid can differ by 30%, which will lead to a 30-40% error in flow rate. In recent years, with the improvement of automation levels, many manufacturing processes have new requirements for flow measurement. Another important point is that the mass (rather than volume) of raw materials controls chemical reaction processes. The heating and cooling effects of steam and air flow are also proportional to the mass flow rate. Therefore, strict

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2023

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04

Qingdao Xinnovis was awarded the honor of being a specialized, refined, and new enterprise in Qingdao in 2023.

Qingdao Xinnovis was awarded the honor of being a specialized, refined, and new enterprise in Qingdao in 2023.

The Qingdao Municipal Bureau of Private Economy Development has issued a public notice, announcing that a total of 503 enterprises in the city are to be identified as specialized, refined, and new small and medium-sized enterprises in 2023. Among them, 39 enterprises from Laoshan District are included, with Qingdao Xinnovis being one of them.

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2023

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04

Semiconductor gas flow controllers currently exhibit good linearity

Semiconductor gas flow controllers currently exhibit good linearity

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. Currently, there are many more manufacturers on the market. As a manufacturer, it is also very necessary to describe the common problems in the operation of semiconductor gas flow controllers. Interested friends can take a look together. Before using this semiconductor gas flow controller, there are still many problems accompanying everyone, so in order to better use them, it is necessary to understand some of its 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 10 MPa; suitable for various gaseous substances (including some corrosive gases such as HCL); wide range of flow coverage. However, during use, remember that if the working properties of the semiconductor material gas flow controller change (such as changes in substances, large changes in operating temperature, etc.), the instrument panel needs to be zeroed.

07

2023

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04

Selection of semiconductor gas flow controllers based on the principle of thermal diffusion coefficient

Selection of semiconductor gas flow controllers based on the principle of thermal diffusion coefficient

The semiconductor gas flow controller adopts the principle of thermal diffusion coefficient. The thermal diffusion coefficient theory is a professional technology with excellent performance and high reliability in harsh environments. Semiconductor gas flow controllers have two temperature sensors placed in the medium. One sensor is heated to a temperature above the ambient temperature, and the other temperature sensor is used to measure the temperature of the magnetic induction material. The flow meter/control board is mainly composed of a surface layer, an electric heater, a proportional valve, and a temperature sensor. According to different heating methods and accurate measurement methods, flow meters are divided into capillary/thermal separation flow meters, insertion flow meters, and microelectronic flow meters. The flow precision of micro flow controllers can reach ±1.0% of the full scale, and the flow monitoring range is 2~100% of the full scale (the range ratio is 50:1), so it is widely used in many industries. The main characteristics of measuring and controlling flow are that the flow rate is not affected by temperature and pressure. Therefore, the product can start normally under both positive pressure and absolute pressure conditions. If users need to use a thermal gas quality flow controller in an absolute pressure environment, they need to specify this to the salesperson when ordering. The product will be manufactured according to the customer's specific needs.

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2023

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03

A major advantage of semiconductor gas flow controllers and quality flow meters is the specific data detected.

A major advantage of semiconductor gas flow controllers and quality flow meters is the specific data detected.

The key difference between semiconductor gas flow controllers and flow meters is that gas quality flow controllers can adjust the process flow through their own built-in PID control valve, automatically adjusting and controlling the valve opening to achieve control of gas quality flow. Gas quality flow meters mainly use sensors to sense the flow rate of the gas and output it to the data acquisition terminal. The biggest advantage of semiconductor gas flow controllers and quality flow meters is that the specific data detected is not affected by temperature and pressure, and users do not need to perform temperature and pressure compensation calculations. Quality flow controllers (MFCs) consist of a flow sensor, a diverter safety channel, a flow control valve, and an amplifier control board. The gas flow sensor uses a capillary thermal difference calorimetry principle to accurately measure the quality flow of gas (without temperature and pressure compensation). The flow data signal measured by the heating bridge circuit of the sensor is sent to the amplifier for amplification. After amplification, the flow detection voltage is compared with the set voltage, and then the error signal is amplified to control the regulating valve, and the closed-loop control system passes through the channel flow to make it the same as the set flow. The diverter determines the flow of the main channel. The flow display meter matched with the mass flow controller has an adjustable voltage regulator setting.

08

2023

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03

Precautions for operating semiconductor gas flow controllers?

Precautions for operating semiconductor gas flow controllers?

With the continuous advancement of science and technology, all walks of life have also developed greatly. The development prospects of semiconductor gas flow controllers are also very good, so the demand is increasing, and there are more and more manufacturers on the market. As a manufacturer, it is also very necessary for us to tell you about the precautions for operating semiconductor gas flow controllers. Interested partners can take a look together. Before using this semiconductor gas flow controller, many problems have accompanied everyone, so if you want to use it better, you need to understand some of its knowledge points. First of all, you should understand 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 the proportion of different gases. Now this product has a wide range of applications and a wide range of working pressures. Our company's products can be used from vacuum to 10 MPa; it can be used for various gaseous media (including some corrosive gases such as HCL); the flow range is wide. However, when using it, remember that if the working conditions of the semiconductor gas flow controller change (such as changes in substances, large changes in working temperature, etc.), the instrument needs to be zeroed. At the same time, the instrument hose needs to be horizontally assembled and calibrated with a level. Otherwise,

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2023

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02

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