If the plot pressure gauge 2.5MPA and the daily work range 1.23MPA-2.12MPA, what sort of pressure gauges should we choose?What are the methods of calculation?
Precision pressure gauge, is expressed as a percentage of the allowable error range of the pressure gauge, generally divided into 0.5, 1, 1.5, 2, 2.5, 3, 4 and seven grades (boiler not 3 and 4), the smaller the value, the higher the accuracy. For example, the dial range 0 ~ 2.5 MPa 2.5 precision pressure gauge, it is shown the allowable error of pointer pressure between the actual pressure value and the measured value of the medium, not more than 2.5MPa * 2.5%= + 0.0625 MPa; when the pressure gauge pressure is 0.8MPa, the actual pressure between 0.7375 ~ 0.862 5MPa.Thus, the actual error of the pressure gauge not only relates to the accuracy, but also relates to the measuring range of the pressure gauge.When the measuring range is the same, the higher the accuracy (i.e. the smaller the number), the smaller the allowable error of the pressure gauge.When the accuracy is the same, the greater the measuring range, the greater the error of the pressure gauge.
I wonder what the allowable error of your watch is,I'll tell you a formula. You can count it yourselfThe allowable error range of instrument / X100%, the result is that you remove the back% of the watch precision to achieve. Then you can choose from the value of a small worth recently. (if you count up to 0.6, you can choose 0.5 of the table.)The level of instrument accuracy stipulated by China is 0.005,0.02,0.05,0.1,0.2,0.35,0.5,1.0,1.5,2.5,4.0., among which 0.5-4.0 is a common industrial instrumentIf it's not clear, leave a message for me
China's general industrial pressure meter is divided into 4 accuracy levels, in line with the JJG52-1999 "Bourdon tube general pressure gauge, pressure vacuum table and vacuum meter" verification regulations, the pressure table prepared by the allowable error. These 4 levels of accuracy are: 1, 1.6, 2.5, and 4. Allowable error (calculated according to the percentage of the upper limit of measurement) is 1%, 1.6%, 2.5%, 4%, respectively.China 2005 new digital pressure meter verification regulations promulgated and implemented, in line with JJG875-2005 "digital pressure gauge verification regulations.". The accuracy of the pressure is respectively 0.01%, 1.6%, 0.02%, 0.05%, 0.1%, 0.2%, 0.5%, 1%, and so on.
