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Tag: vacuum gauge

What is a Vacuum Gauge? Sun, Oct 20, 2024

A vacuum gauge is a key component for measuring pressure in vacuum equipment, covering a pressure range from ultra-high vacuum to positive pressure (generally less than 2 atmospheres). The measurement accuracy of vacuum gauges of the same type is affected by various factors such as gas composition, temperature, altitude, and installation angle, and needs to be selected and calibrated according to the actual situation. In this blog, ATO will delve into various aspects of vacuum gauges, including their working principles, different types, and applications in various industries.

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Types of Vacuum Gauges Sat, Oct 19, 2024

A vacuum gauge is an instrument used to measure the degree of vacuum or air pressure. Generally, the measurement of air pressure is based on the changes in a certain physical effect under different air pressures. Widely used in scientific research and industrial production. The main component of a vacuum gauge is a hot cathode, and the heat emitted electrons generated during its operation ionize the gas. This ion flow is proportional to the number density of gas molecules. When all other parameters, including temperature, are constant, the size of the ion flow is proportional to the air pressure, and the air pressure value can be obtained by measuring the ion flow. The hot cathode ion gauge is mainly composed of three electrodes, namely cathode, gate, and collector.

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