Differences between gas turbine flowmeters and liquid turbine flowmeters

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When purchasing a turbine flowmeter, we often need to consider one question: what substance are we measuring? Determine whether it is a gas or a liquid, and then make a choice based on specific requirements. Why is it necessary to consider this issue? What are the differences between turbine flowmeters used for measuring gases and those used for measuring liquids? Since the density of gases is much lower than that of liquids, gas turbine flowmeters differ significantly in structure from liquid turbine flowmeters, and the density of gases is greatly affected by changes in temperature and pressure. Therefore, when measuring the volumetric flow rate of gases, gas turbine flowmeters equipped with temperature and pressure compensation functions are generally used to achieve accurate measurement of gaseous media. While measuring volumetric flow rate, this type of turbine flow meter must monitor the temperature and pressure of the gas medium, and convert the volumetric flow rate under different operating conditions into a value corresponding to standard conditions (P=101.325 Kpa, T=273.15 K). Liquid turbine flowmeters belong to the category of velocity-type flowmeters. Their principle relies on the relationship between the angular velocity of the impeller placed in the liquid and the flow rate of the liquid; by measuring the speed of rotation of the impeller, it is possible to determine the flow rate of the liquid. These devices are highly accurate and represent a mature type of flowmeter available today. In addition to possessing the features and functions of conventional turbine flowmeters, this product places greater emphasis on the user experience and on solving the problems that users encounter in actual use.