How do you see a vacuum gauge?
The pressure on him is 0. 1 stands for 1MP
The vacuum pressure gauge on any device has its working pressure and can be read correctly! Only it can see the negative pressure!
The units on the vacuum pressure gauge are bar, MPa, kPa, and the readings are mainly visible;The vacuum meter is divided into pressure vacuum meter and vacuum pressure gauge. Vacuum pressure gauge: Instrument Based on atmospheric pressure for measuring less than atmospheric pressure. Pressure vacuum meter: an instrument based on atmospheric pressure for measuring greater than or less than atmospheric pressure.There are two ways of expressing pressure. One is the absolute pressure, which is called absolute pressure, and the other is the pressure expressed on the basis of atmospheric pressure, which is called relative pressure. Since the pressure measured by most pressure gauges is relative pressure, the relative pressure is also called the gauge pressure. When the absolute pressure is less than the atmospheric pressure, the absolute pressure in the container is less than the value of one atmospheric pressure. Vacuum".They are as follows: the relationship between the absolute pressure = + atmospheric pressure relative pressure; vacuum degree = atmospheric pressure and absolute pressure; pressure units in China legal Pa (N/ m), known as Pascal, referred to as the PA. Since this unit is too small, it often uses its 10^6 times unit MPa (Zhao Pa).
