In the traditional way, the measurement of the liquid volume in the production workshop is the need to spend a lot of energy, time-consuming. Since the use of orifice flowmeter, similar problems have been well resolved, especially in the current technology has been very mature, the performance of the installation is also very good. For most of the production workshop, the measurement is something that needs to be done every day, there are great differences in the accuracy of the data in different measurement methods. Orifice flowmeter is not only suitable for liquid measurement, but also suitable for steam measurement, generally applicable to the workshop, the installation is also very convenient, relatively stable performance.