How much straight pipe is required before and after using a vortex flowmeter to measure steam, and can it accurately measure the mass flow rate of superheated steam?

A certain length of straight pipe is required before and after a vortex flowmeter when measuring steam. The specific length must be determined based on the model and requirements of the flow meter; generally, an orifice plate flow meter requires at least 5 times the pipe diameter in straight pipe length before and after it. For the measurement of the mass flow rate of superheated steam, a vortex flow meter can use temperature and pressure sensors to measure the temperature and pressure of the steam, and then perform calculations based on the physical properties of the steam, thereby enabling the measurement of its mass flow rate. This method is theoretically feasible; however, in practice, one must consider the accuracy and stability of the sensors, as well as the requirements regarding the flow state. Therefore, in practical applications, it is still necessary to calibrate and verify the measurement results to ensure their accuracy. .

Generally, it’s 10 in the front and 5 at the back; this can vary depending on the manufacturer. The measurements are quite accurate