Accuracy and scale qualification of flowmeters

Output signal isolation requirements The signal output terminal of the flow measurement instrument should be isolated from the ground terminal and the AC power supply, so as to avoid causing interference for subsequent instruments and causing failures due to common ground. Accuracy and Scale Requirements Regarding the requirements for surface accuracy, there are clear rules for flow meters used for transaction settlement, but there are no clear rules for flow meters used for process control. But in general the requirements are not as stringent as flow meters for transaction settlement. This is because in the process control, whether the operation control is appropriate or not is the final indicator is the quality indicator indicated by the weight and so on. For example, the air-fuel ratio in the combustion process may deviate from the optimal value due to insufficient flow measurement accuracy, but it can be judged by indicators such as oxygen content and smoke color, and the air-fuel ratio can be corrected to keep it within a reasonable range. The demand for the upper limit of measurement is not as high as that of transaction settlement, 30〜When many new flowmeters were not available 40 years ago, most of the flow measurement in process control still relied on throttling differential pressure flowmeters. The technical level at that time usually only reached the scale of 3-1, basically Can meet the needs. Most of the flowmeters sold on the market today have been intelligentized. When the upper limit of measurement selected during the system design is proved to be too large or too small, it can be corrected and rationalized through a handheld terminal. This is a part of the flow measurement technology. A big improvement, this advancement makes the scale of the flow measurement instrument in the process control seldom a problem.

These mass flow meter electromagnetic flow meter slurry are meant to serve as a guide for business owners on how to both identify potential opportunities for transformative innovation and how to adapt to the constantly changing technologies of today.

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