Reliable flow measurement advantages of Prowirl series gas sensor product description, vortex flow measurement system of vapor and liquid after 100000 times of experiment and test, has the following advantages: not affected by the following factors: vibration (in all directions more than 1 g) - temperature impact (> 150 K/s) - water pollution - free fluid medium impact maintenance, no moving parts, no zero drift ("life cycle" calibration) software initialization settings, save time and operation cost of the Prowirl provides the following applications: single instrument can finish the measurement in the flow quality of computer saturated vapor or liquid, volume flow measurement value and the measured value of the temperature input for superheated steam and the calculation of gas quality based on the flow of external pressure