What is the problem with the verification of the zero-setting accuracy of the electronic scale ? Do you know all the friends ? Today, I will give you a detailed summary of the following zero-accuracy verification of the electronic scale. The problem, hope can help everyone.
According to my multi-disciplinary research, the verification of the zero accuracy of electronic scales is generally as follows:
The first method: taking the accuracy of the zeroing device to complete the verification of the zeroing accuracy of the electronic scale. First, we first set the electronic scale to be verified to zero, and then we can increase the weight one by one, which is zero tracking with automatic zero setting. The electronic scale will get rid of the zero tracking range ( such as the weight of 10e) and use the flicker point method to determine the zero error.
The second method: taking the accuracy of the tare device to complete the verification of the zero accuracy of the electronic scale, the same step as the previous step is to determine the accuracy of the electronic scale tare device, and the tare device should be used. The indication value is adjusted to zero, and the error is measured by the flicker point method.
Example : Verify that an electronic scale has a graduation value of 50kg , and pre- measurement of the skin removal accuracy of 10t tare. How to test, add 10t weight on the weighing platform , press the peeling button, the indication value is 0kg. Then, apply a small weight of 0.1e=5kg one by one to the weighing platform . When adding 35kg weight, it shows 50kg , and calculate the zero error =25-35=-10kg . The scale of the weighbridge is -10kg . According to the maximum allowable error, the accuracy of the skinning device should be +-0.25e=+-12.5kg , and the accuracy of the weighing device of the weighbridge is qualified.
The above is only a small verification of the verification method of the zero accuracy of the electronic scale. Therefore, in real life use, it is necessary to comprehensively consider the cost according to the actual use of the electronic scale, rationally design the system, and select a more economical and more suitable weighing measurement scheme. Need to be based on actual conditions, so as to achieve more economical and more optimized purposes.
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