Working Principle of Vacuum Gauge --How Vacuum Gauge Work

Working Principle of Vacuum Gauge

--How Vacuum Gauge Work

A vacuum gauge is a measuring instrument used to measure the pressure of a gas or liquid. Its working principle is based on the following key principles:

1. Principle A: Boyle's Law - Boyle's Law stipulates that at constant temperature, the pressure of a gas is inversely proportional to its volume. Therefore, when the pressure increases, the volume of the gas decreases; when the pressure decreases, the volume of the gas increases.

2. Principle B: Spring principle - A vacuum gauge usually contains a spring system, one end of which is in contact with the pressure to be measured and the other end is connected to the pointer of the vacuum gauge. When pressure acts on the spring system, the spring undergoes elastic deformation, which corresponds to the movement of the pointer.

3. Principle C: Introducing vacuum - The working principle of the vacuum gauge is based on the introduction of vacuum as a comparison reference. When the vacuum is established, the pointer will point to the zero scale accordingly. Then, when the measured pressure acts on one end, the pressure will act on the spring system, causing the pointer to produce a displacement relative to the zero scale.