Vacuum pressure gauges are used in vacuum coating industry
Vacuum pressure gauge plays a vital role in the vacuum coating industry. Vacuum coating is a technology that deposits
thin film materials onto the surface of a substrate under a vacuum environment. It is widely used in optics, electronics,
decoration and other fields. In the vacuum coating process, precise control of vacuum degree is one of the key factors to
ensure the quality and uniformity of the film.
Application of vacuum pressure gauge in vacuum coating
1. Monitoring and controlling vacuum degree: The vacuum pressure gauge can monitor and control the vacuum degree
in the coating chamber in real time to ensure that the coating process is carried out in a set vacuum environment. By
accurately measuring the vacuum pressure, the operator can adjust the operating parameters of the vacuum pump in
time to obtain the best coating effect.
2. Improving film quality: Accurate vacuum pressure control can improve the quality and uniformity of the film and
reduce film defects. For example, in optical coating, in order to prepare high-quality anti-reflection films, reflective
films, etc., the vacuum pressure needs to be strictly controlled. The vacuum pressure gauge can accurately measure
the vacuum pressure in real time, provide reliable pressure data for the coating process, and ensure the stability and
consistency of the coating quality.
Working principle of vacuum pressure gauge;
The working principle of vacuum pressure gauge is based on the relationship between gas thermal conductivity and
pressure. For example, the Pirani resistance gauge uses the relationship between resistance and temperature to infer
the air pressure by measuring the temperature change of the hot wire under different air pressures. This measurement
method has the advantages of fast response speed, high accuracy and good stability, and is suitable for fields that require
precise control and monitoring of vacuum.
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