What's the difference between a pressure gauge and a negative pressure meter?
A pressure meter is an instrument based on atmospheric pressure for measuring atmospheric pressure.Negative pressure meter:1. Vacuum pressure gauges are instruments based on atmospheric pressure for measuring less than atmospheric pressure.Measuring range: -0.1~0Mpa.2 pressure vacuum meter refers to the atmospheric pressure as the basis for measuring greater than and less than atmospheric pressure instrument.Measuring range: -0.1~0.15MPa, -0.1~0.3Mpa.Distinction: vacuum pressure gauge (pressure vacuum gauge) is negative pressure with positive pressure, pressure gauge is only positive pressure
A negative pressure meter is also a pressure gauge. It is only used to measure negative pressure. Negative pressure is relative to standard atmospheric pressure.
According to the type of pressure to be divided into negative pressure table, differential pressure gauge, positive pressure gauge, so the negative pressure gauge is only one kind of pressure gauge.Negative pressure meter measurement is relative to the local atmospheric pressure for negative pressure, negative pressure table, also known as vacuum pressure gauge, but conceptually there are some subtle differences, not here.If there is no special explanation, we generally say the pressure gauge defaults to the positive pressure meter.
