What is the maximum allowable error of a precision pressure gauge of 0.4? How to calculate?
Range multiplied by 0.4%=, allowing errors, plus or minus numbers
Maximum allowable error = + (range *0.4%)You can't tell the method of calculation only if you don't know the scale of your watch.
The accuracy level of a pressure gauge is divided by the percentage of its allowable error to the dial scale value, and the greater the accuracy grade, the greater the allowable error limit for the dial scale. The greater the measuring range of the pressure gauge, the same accuracy level of the pressure gauge, the absolute value of the pressure measurement it allows, the greater the error.Often use the pressure gauge diameter of 60 precision grade 2.5, dial diameter phi 100/150 accuracy of 1.6, level 1, diaphragm pressure meter accuracy is 2.5 grade, precision pressure meter accuracy: 0.4, 0.25.Allowable error of pressure gauge = range X (+ precision level)Example: the error rating of a pressure gauge is 0.4, and the range is 1MpaAllowable error of pressure meter = range X (+ precision level) =1Mpa * + 0.4%= + 0.004Mpa
