Electromagnetic flowmeter selection what issues? Here we briefly introduce.
1. Accuracy grades The accuracy class and the maximum allowable error of the flowmeter within the specified flow range should meet the requirements of Table 1. Flowmeter error indicates the use of relative indication error.
2. Citation error Citation error can also be used for flowmeter error indication used for instantaneous flow indication. The maximum allowable error series should meet the requirements in Table 1. The accuracy of the test results is no longer given in the bid, but the use of its maximum allowable. The error is expressed, and FS should also be marked after the maximum allowable error, such as ±0.5% FS.
3. Error indication method and selection principle In one test of a flowmeter, the flowmeter error indication method should be given in terms of one of the accuracy level and citation error; for the use of relative indication error and reference error combination In the error flowmeter, one method should also be used to represent the error in one verification.
4. Repeatability of repeatable flowmeters shall not exceed 1/3 of the absolute value of the maximum allowable error specified by the corresponding accuracy level.
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