Is the pressure meter the same as the pressure meter?
Generally, the pressure gauges are relative to the atmospheric pressure, so the pressure difference meter is also used. There is very little comparison between meter and absolute vacuum, do you think so?
Pressure gauge: only one pressure value is measuredPressure differential: measure two pressure values, and calculate the pressure differenceDissimilarity1, the number of pointers is not the same2, sensor number is not the same3, the structure is not the same
Dissimilarity。Pressure gauge: only one pressure value is measured.Pressure differential: measure two pressure values, and calculate the pressure difference.Pressure gauges and differential pressure range selection, pay attention to the following points:1, in order to ensure the elastic element of pressure gauge can work reliably in the safety range of the elastic deformation, the pressure gauge range is selected not only according to the measured pressure, but also should consider the measured pressure change rate, the range need to leave enough room for. When measuring the steady pressure with a pressure gauge, the maximum operating pressure shall not exceed 2/3 of the measuring range;2. Use the pressure gauge to measure the pulsation pressure, the maximum working pressure should not exceed the range of 1/2;3. When using the pressure gauge to measure high pressure, the maximum working pressure should not exceed the range of 3/5. In order to ensure the accuracy of measurement, the minimum operating pressure should not be less than 1/3 of the measuring range.
