Contact Us

How to Read the Vacuum Pressure Gauge?

1. Overview of vacuum pressure gauge

The vacuum pressure gauge is an instrument used for vacuum pressure measurement. It uses atmospheric pressure as a reference and is an instrument used to measure less than atmospheric pressure.

2. How to read the vacuum pressure gauge?

The pressure units on the vacuum pressure gauge include inHg, bar, MPa, PSI, 1MPa=145psi. It is easier to read the pressure in terms of MPa. R and the number are the code names of the refrigerant gauge. The pressure of the refrigerant gauge is closely connected with the temperature. In engineering industry, the kilograms of pressure are referred to kg/cm2, and the pressure gauge is often marked with mpa. 1 N/m2=1 Pa, 1 kg=9.8 N, 1m2=10000 cm2, so 1kg/cm2=98 KPa = 0.098 MPa. Generally, people take an approximate value of 1 MPa=10 kg/cm2.

The range of the vacuum pressure gauge starts from zero, and the range of the absolute pressure gauge starts from -1 Bar. The pressure gauge is widely used for measuring the pressure of the liquid, gas, steam and other media that are not corrosive to the alloy in pipelines and containers.

3. The use of vacuum pressure gauge

The vacuum pressure gauge has the advantages of small size, safety and reliable performance, and clear display. There are two ways to express pressure: one is the pressure expressed on the basis of absolute vacuum, called absolute pressure; the other is the pressure expressed on the basis of atmospheric pressure, called relative pressure.

Since the pressure measured by most pressure measuring instruments is relative pressure, it is also called gauge pressure. When the absolute pressure is less than atmospheric pressure, the absolute pressure in the container can be represented by a value that is less than one atmospheric pressure, which is called "vacuum".

Related Article for Reference

Technical Advantages of SF6 Gas Density and Moisture Online Monitoring System
SF6 is a colorless, odorless, non-toxic and non-flammable gas with extremely stable chemical properties. It has excellent arc extinguishing and insulation properties and is widely used as insulation o...
Thu 04 2023
Common Types of Pressure Gauges
There are many types of pressure gauges, each of which is best suited for a specific task. The traditional round pressure gauge is one of the most common types of pressure gauges. This is a very commo...
Tue 05 2021
Failure Analysis of Low Insulation of SF6 Relay Contact
The SF6 relay used by the high-voltage circuit breaker is an important protection and control component in the power system. If the circuit breaker fails, it will cause great economic losses. To ensur...
Sat 01 2023
Lanso Instruments INC.
233 W 1st St #210, North Vancouver, Canada
233 W 1st St #210, North Vancouver, Canada