What effect will the accuracy is high and low for bimetallic thermometer?

The classification of bimetallic thermometer, many are also very widely used, but no matter what kind of bimetallic thermometer, we must know its accuracy when buy, is this why? What influence the precision of the bimetallic thermometer? 。 We know that usually require high precision industrial equipment, and the precision requirement of household bimetallic thermometer is relatively not that high. So, what is the effect of the precision of high and low for bimetallic thermometer? In fact, the precision of the bimetallic thermometer is used to calculate the maximum absolute error of a parameter. The permissible error of the maximum absolute error = | | | = | X precision range, for example, the bimetallic thermometer measurement range of 0 ~ 300 ℃ accuracy of 1. Level 5, margin of error for 300 x1. = + / - 5% 4. The maximum absolute error is 5 c, 4. 5 c so, only when we know the precision of the bimetallic thermometer, can we accurately measured and tested periodically. So we can according to actual needs, when buy to choose the appropriate accuracy.