What is pressure gauge accuracy?
The accuracy grade of the pressure gauge refers to the percentage of the allowable error of the pressure gauge to the full scale.
For example, a pressure gauge with a full scale of 100Mpa and an accuracy grade of 1.6, its allowable error is 100Mpa×1.6%=±1.6Mpa. If the accuracy level is 1.5, then its allowable error is 100Mpa×1.5%=±1.5Mpa.
Under normal use conditions, the accuracy of the measurement results of the instrument is called the accuracy of the instrument. The smaller the reference error, the higher the accuracy of the meter, and the reference error is related to the range of the meter, so when using a meter with the same accuracy, the range is often compressed to reduce the measurement error. In industrial measurement, in order to express the quality of the instrument, the accuracy level is usually used to express the accuracy of the instrument. The accuracy level is the maximum quoted error minus the plus, minus and percent signs. The accuracy level is one of the important indicators to measure the quality of the instrument.
In industrial measurement, in order to express the quality of the instrument, the accuracy level is usually used to express the accuracy of the instrument. The accuracy level is the maximum reference error without the positive, negative and percentage signs. The accuracy level is one of the important indicators to measure the quality of the instrument.
Instrument accuracy = (maximum absolute error / instrument range) * 100%
The above calculation formula takes the absolute value and removes the %, which is the accuracy level we see.
So how to define the existing 1.5 grade pressure gauge?
According to the current national standard for pressure gauges, the accuracy grade is 1.6, and the allowable error of the 1.5 grade pressure gauge in use is calculated as 1.6 grade, and the accuracy grade can not be changed.
