What is an orifice flowmeter, do you know?

Orifice flowmeter, also known as differential pressure flowmeter, is composed of a primary detection part (throttling part) and a secondary device (differential pressure transmitter and flow display instrument), and is widely used in the flow of gas, steam and liquid Measurement. It has the characteristics of simple structure, convenient maintenance, stable performance and reliable use. 1. Overview The orifice plate flowmeter, also known as the differential pressure flowmeter, is composed of a primary detection part (throttling part) and a secondary device (differential pressure transmitter and flow display instrument), and is widely used in gas and steam and liquid flow measurement. It has the characteristics of simple structure, convenient maintenance, stable performance and reliable use. The orifice plate throttling device is a standard throttling piece that can be produced directly in accordance with national standards without calibration. 1. National standard GB2624-81<Design, installation and use of flow measurement throttling devices; 2. International standard ISO5167<Various throttling devices specified by the International Organization for Standardization; 3. Standard GJ516-87-HK06 of the Ministry of Chemical Industry. 2. Working principle The fluid filled with the pipe flows through the throttling device in the pipe, causing local contraction near the throttling part, increasing the flow velocity, and generating a static pressure difference between the upstream and downstream sides. Under the condition of knowing the relevant parameters, according to the principle of flow continuity and Bernoulli's equation, the relationship between differential pressure and flow can be deduced to obtain the flow.

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