Due to the advantages of simple structure, low price, and convenient use, many people like to use orifice flowmeters. However, in field applications, large measurement errors often occur, which are caused by improper selection, design calculation, manufacturing, and maintenance. In response to these situations, some improvement measures to improve measurement accuracy are proposed.
1. Use standard orifice platesThe =d/D of a standard orifice is approximately 0.2 ~ 0.75. For the convenience of calculation, 0.5 can be taken. However, due to the low measurement accuracy of the standard orifice plate and the large pressure loss, it is only used for cleaning fluids.2. Design and calculation of orifice flowmeter.(1) Given pipe diameter and site layout, as well as fluid properties and working parameters, given flow measurement range, it is required to design a standard throttling device. In this case, the design only needs to transfer the throttling type, measuring range and opening size of the throttling element to the manufacturer. The manufacturer has a complete manual and software, which can be designed according to user requirements.(2) Understand the necessary conditions such as the inner diameter of the pipeline, the opening size of the throttling element, the pressure taking method, and the measured fluid parameters. It is required to calculate the flow rate based on the measured pressure difference value. This is generally required for experimental work. In order to obtain the flow rate more accurately, we need to accurately measure the temperature and pressure parameters of the fluid at the same time.Hope the above content is helpful to you. If you have any questions, please feel free to contact us.
Post time: 21-09-21