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What is the precision of the pressure gauge specified?
- Jun 04, 2018 -

Accuracy grade of pressure gauge, is the permissible error of pressure gauge range to represent the percentage of, general component is 0.5, 1, 2, 2.5, 1.5, 3, 4, seven grade levels (boiler no 3 and 4), the smaller the value, the higher the precision. For example, the dial range is 0 to 2.5

The allowable error between the pressure value indicated by the pointer and the actual pressure value of the medium under test shall not exceed the upper 2.5MPa * 2.5% = + / - 0.062 5

MPa; When the pressure gauge indicates that the pressure is 0.8mpa, the actual pressure is between 0.7375 and 0.8625MPa.

It can be seen that the actual error of the pressure gauge is not only related to the precision, but also to the range of the gauge. At the same time, the higher the precision (i.e. the smaller the number), the smaller the allowable error of the pressure gauge.

With the same precision, the greater the measuring range, the greater the error of the pressure gauge.