Vacuum gauges and pressure gauges are two common gauges, and their application fields are also very wide. So what are the differences between them?
1. Different functions
Vacuum gauge: It is based on atmospheric pressure and used to measure less than
Pressure gauge: The pressure gauge uses elastic elements as sensitive elements. It measures and indicates a gauge above ambient pressure.
2. Different applications
Vacuum gauge: The vacuum pressure gauge is used to measure non-crystallized and non-solidified liquids or gases that have no corrosive effect on steel, copper, copper alloys, and no explosion hazard.
Pressure gauge: Pressure gauges can be seen everywhere in heating pipe networks, oil and gas transmission, water and gas supply systems, vehicle repair and maintenance factories, and shops. Especially in the process of industrial process control and technical measurement. Because the elastic sensitive element of the mechanical pressure gauge has the characteristics of high mechanical strength and convenient production, the mechanical pressure gauge is more and more widely used.
Some related notes:
absolute pressure – The actual pressure at a given position is called the absolute pressure, and it is measured relative to absolute vacuum (i.e., absolute zero pressure).
gauge pressure – Gauge pressure is the pressure relative to the atmospheric pressure. In other words, how much above or below is the pressure with respect to the atmospheric pressure.
vacuum pressure – Pressures below atmospheric pressure are called vacuum pressures and are measured by vacuum gages that indicate the difference between the atmospheric pressure and the absolute pressure.
atmospheric pressure – The atmospheric pressure is the pressure that an area experiences due to the force exerted by the atmosphere.