Allowed error of pressure gauge how to calculate?

Pressure gauge with sensitive element (in the table Bourdon tubes, bellows, bellows) Elastic deformation, the pressure deformation by the transformation of movement in table to Pointers, cause the hands to display the pressure. Pressure gauge accuracy grade is it permissible error of the dial scale value by it's percentage, its accuracy level the greater the number of permissible error of dial scale limit value is larger. The greater the range of pressure gauge, the same precision level gauge, it measured the pressure value of the absolute value, the greater the margin of error. General pressure gauge measuring accuracy level 1 respectively. 0 and 1. 6, 2. 5, 4. Level 0. Allowed error of pressure gauge how to calculate? Below small make up to tell you! The permissible error of pressure gauge = range & times; （ ± Precision grade) Example: a pressure gauge error level is 1. 6, the range is 1 mpa pressure gauge permissible error = & times; （ ± Precision grade) = ( 1Mpa× ± 1. 6%=± 0. 016Mpa) So when choosing precision pressure gauge, in order to prevent the precision of the pressure gauge and the error of the system ( In the measuring instrument using pressure correction, for example) , you need to take the approach of the reference error is less than calculated income series values. Range of pressure gauge is used, should between 1/3 to 2/3 of the upper limit.