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1. What are the types of mass flow meters?
2. Accuracy level of flow meters.
Generally speaking, the accuracy level of flow meters refers to percentages, where 2.5 represents an allowable error of ± 2.5%. The accuracy of flow meters for atmospheric infiltration sampling cluster detectors is considered relatively low. At present, the accuracy of the main flow meters is generally between 0.2 and 1.0. And 1.5~2.5 is relatively poor. The accuracy varies depending on the flow meter and the measuring medium. The measurement accuracy of liquids is better than that of gases, and the measurement accuracy of gases is generally greater than level 1.0. For more knowledge about flow meters, please visit Shanghai Tianshi for more details.
3. What types of flow meters and electromagnetic flow meters have comparable accuracy levels?
The accuracy levels of Coriolis mass flow meters, high-precision turbine flow meters, multi sound simulated loss channel ultrasonic flow meters, and high-precision volumetric flow meters (elliptical gears, waist wheels, etc.) can be basically equivalent to electromagnetic flow meters, and some high-precision models have even better accuracy than electromagnetic flow meters.
1. Coriolis mass flow meters.
Accuracy parameters: The measurement error of high-precision industrial grade models can reach ± 0.05%~± 0.1%, while the error range of conventional models is ± 0.1%~± 0.5%, fully covering the commonly used accuracy range of electromagnetic flow meters from ± 0.2%~± 1%. Some specialized models have better accuracy2. Adaptation features: Directly measure mass flow rate, not affected by the density, viscosity, and pressure fluctuations of the measured fluid, an
2. High precision turbine flow trace sail meter 1 Precision parameters: The measurement error of the dedicated high-precision model can be as low as ± 0.1%, while the error range of the conventional industrial model is ± 0.2%~± 0.5%, which is consistent with the precision level of the high-precision model of the electromagnetic flowmeter.
2. Adaptation limitations: Only applicable to clean, low viscosity single-phase fluids (such as water, light finished oil), cannot measure impurities, high viscosity or multiphase fluids, and installation needs to meet the requirements of the front and rear straight pipe sections to ensure stable flow field.
III. Multi channel ultrasonic flowmeter 1 Accuracy parameters: The measurement error of the segmented or inserted multi-channel model can reach ± 0.1%~± 0.2%, which is completely matched with the high-precision level accuracy of the electromagnetic flowmeter.
2. Adaptation features: It can measure conductive and non-conductive fluids, and adopts non-contact installation without direct contact with the medium, but requires the tested pipeline to be fully filled throughout the entire pipe. The presence of a large number of bubbles in the fluid will significantly reduce the measurement accuracy.
4. High precision volumetric flowmeter 1 Accuracy parameters: The measurement error of industrial grade high-precision elliptical gear and waist wheel flow meters can reach ± 0.05%~± 0.2%, which is comparable to the high-precision models of electromagnetic flow meters.
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