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How to solve the positive and negative error of electronic tension machine?

Source：Chengde Jinjian Testing Instrument Co., Ltd　  　Views：493　  　Time：2021-01-26

Electronic tension machine is an important equipment in the study of non-metallic material mechanics, but there are many types of electronic tension machine, and different electronic tension functions meet different measurement needs. But no matter which type of non-metallic tensile testing machine, there will be errors in the measurement, so people will go through many experiments, and finally determine the accurate value.

By using the method of many experiments, the error rate of the measured value can be avoided and the error can be reduced. But in the process of measurement, there are often positive and negative differences. If there is a positive and negative difference in the process of measurement, how to solve it? Yangzhou xintianhui technical personnel will introduce the solution of positive and negative error of electronic tension machine in detail.

1. In the verification of electronic tensile machine, when there are positive and negative errors in the indication of the testing machine, the indication of the testing machine and the corresponding standard force value are generally corrected. However, it should be noted that artificial correction should not be too arbitrary, but should be made according to the actual situation.

2. When the indication error is negative, it is linear. First of all, the actual error value of each calibration point should be recorded during the verification, and then when the measurement is calibrated again, the standard force value of each calibration point is the standard force value minus the actual error value, which can be adjusted. For example: when the standard force value is 200kn, the error is - 4.2kn. In the calibration, when the display shows 195.8kn, you need to confirm the key and enter the value.

3. When the indication error is positive, it is linear. In the way of negative error, during calibration, the standard force value of each calibration point will change, the standard force value plus the actual error value can be input, and then it can be adjusted.

4. If the indication error, whether positive or negative, is not linear, it needs to be calibrated with the above method, and then it can be adjusted with the conventional method.

In fact, as long as the error of electronic tension machine measurement is the above, no matter which one can be adjusted, and finally get accurate values. If you encounter any of the above errors in the measurement, you can use this method to solve them. However, we still need to pay attention to record the data in the measurement, do not ignore the details.


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