Uncertainty of flow measurement and accuracy class of the flow meter
Thread Content
How to distinguish between the uncertainty and accuracy class of a flowmeter? The differences and connections between the two, thank you!
The uncertainty of flow measurement is related to the accuracy class of the flowmeter.
Accuracy describes the relationship between the measurement result and the true value, while uncertainty evaluates the extent to which various factors within the entire measurement process affect the measurement result.
Uncertainty refers to the degree to which a measurement result cannot be determined with certainty; it takes into account the influence of factors such as the environment, personnel, measurement methods, measuring instruments, and the quantity being measured. It represents a range. The accuracy grade refers to the precision of the measurement results provided by the instrument itself.
Uncertainty refers to the error that occurs when a flow meter measures fluid flow; an error within a certain range corresponds to a specific accuracy class. Generally, the accuracy of domestically produced flowmeters for measuring liquids is 0.5 grade, while that for measuring gases is 1.0 grade.