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What is a hydrogen pressure sensor?

What is a hydrogen pressure sensor?

Hydrogen pressure sensor: optical hydrogen pressure sensor mainly uses the optical characteristics of gas. According to the different working principles, it is mainly divided into optical fiber hydrogen pressure sensor, surface acoustic wave hydrogen pressure sensor and photoacoustic hydrogen pressure sensor. The principle of the optical fiber hydrogen pressure sensor is to use the combination of the optical fiber and the hydrogen-sensitive material to change the physical properties of the optical fiber after the hydrogen-sensitive material reacts with hydrogen, thereby changing the optical properties of the transmitted light in the optical fiber. The hydrogen concentration is measured by detecting a change in the physical quantity corresponding to the output light. According to the different sensing mechanism, the optical fiber hydrogen pressure sensor can be divided into microlens type, interference type, evanescent field type and optical

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Development Direction and Trend of Hydrogen Pressure Sensor

Development Direction and Trend of Hydrogen Pressure Sensor

Hydrogen pressure sensors: At present, electrochemical and electrical hydrogen pressure sensors occupy a high share of the market. Various electrochemical hydrogen pressure sensors have wide working temperature range, low power consumption and high sensitivity, but their electrode life is limited, and they need to provide current or voltage to the sensor during the working process, so they are not suitable for flammable and explosive places. The electric hydrogen pressure sensor has the advantages of simple structure, easy miniaturization, and easy integration, but its working temperature is high, energy consumption is increased, and electric sparks are easily generated during work, so it is not suitable for flammable and explosive places.

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What is the skill of hydrogen pressure sensor installation?

What is the skill of hydrogen pressure sensor installation?

The hydrogen pressure sensor mainly uses the functional relationship between the electrical properties of the material and the hydrogen concentration to measure the hydrogen concentration by detecting the electrical physical quantity. According to the different working principles, hydrogen pressure sensors can be divided into resistive and non-resistive. 1) Resistive hydrogen sensor, resistive hydrogen sensor is mainly a semiconductor metal oxide hydrogen sensor. When the semiconductive metal oxide adsorbs oxygen, the resistivity will increase significantly. When a reducing gas, such as hydrogen, reduces oxygen in the metal oxide chemisorption layer, the resistivity will change accordingly. The hydrogen concentration can be detected by detecting a change in resistance.

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Analysis and Thinking on the Safety of Hydrogen Pressure Sensor

Analysis and Thinking on the Safety of Hydrogen Pressure Sensor

Hydrogen pressure sensor: the safety of hydrogen is an inevitable problem in the development of fuel cell industry. We comprehensively analyze the safety of hydrogen pressure sensor from the aspects of hydrogen characteristics, storage and transportation process, safety design of fuel cell vehicles, safety of vehicles in accidents and extreme cases, and safety specifications of hydrogenation facilities. Through a detailed analysis, we have worked to address concerns about hydrogen safety and explain why we believe that the safety of hydrogen pressure sensors in energy applications is comparable to traditional fuel and lithium batteries.

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Discussion on working temperature characteristics of hydrogen pressure sensor

Discussion on working temperature characteristics of hydrogen pressure sensor

Hydrogen pressure sensor: At present, among the sensors used for hydrogen detection, the semiconductor hydrogen pressure sensor is a resistance sensor. Due to their high sensitivity, ease of miniaturization and ease of array, they can be integrated into miniature and low-power detection probes. They have been widely used in portable, online detection and other applications. The working temperature of semiconductor sensors is generally above 250°C to ensure measurement accuracy and response time, but in a specific environment, too high working temperature will bring safety hazards.

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What if the water pressure of the water pressure sensor of the wall-mounted boiler is too low/too high?

What if the water pressure of the water pressure sensor of the wall-mounted boiler is too low/too high?

Wall-mounted boiler water pressure sensor: as one of the necessary conditions for the normal operation of gas wall-mounted boilers: the water pressure must be stable. However, after the gas wall-mounted boiler has been running for a period of time, due to the thermal expansion and cold contraction caused by the temperature increase of the air or heating water in the pipeline, some users will also find the water pressure of their gas wall-mounted boiler water pressure sensor. Is this normal? How to solve the problem when the water pressure of the water pressure sensor of the gas boiler is abnormal.

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Application of Wall-hung Boiler Water Pressure Sensor in Wall-hung Boiler

Application of Wall-hung Boiler Water Pressure Sensor in Wall-hung Boiler

Wall-mounted boiler water pressure sensor: In the working process of the heating system, water pressure is an important parameter that affects the normal operation of the system. The normal working water pressure of the wall-mounted boiler is 1bar ~ 1.5bar; too high water pressure will affect the sealing performance of the system and even damage the system; too small will lead to insufficient flow of the system and affect its heating effect. Water pressure monitoring of wall-mounted boiler water pressure sensor is an important part of wall-mounted boiler control.

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Classification and Principle of Hydrogen Pressure Sensor

Classification and Principle of Hydrogen Pressure Sensor

1. The semiconductor sensor of hydrogen pressure sensor takes the resistive semiconductor sensor as an example: sno2, zno, wo3 and other metal oxides are mainly used as gas-sensitive materials. For example, the domestic qm series hydrogen sensor is based on sno2 as hydrogen sensitive material, so it is also called metal oxide semiconductor hydrogen sensor. Its working principle is: when hydrogen is adsorbed, hydrogen acts as a donor to release electrons and combines with oxygen ions in the chemical adsorption layer, so the carrier concentration changes, and the change value has a certain function relationship with the volume fraction of hydrogen.

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