Regarding the built-in orifice plate
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I was working on a project recently, and for the flow meter I used an embedded orifice plate. What exactly is an embedded orifice plate, and what’s the difference between it and a regular orifice plate? Is it an integrated orifice plate? What does the choice of this relate to – the pipe diameter or the medium? ?
Take a look at the main technical specifications of the built-in dual Venturi tube; the principle behind what LZ refers to as a \"built-in orifice plate\" is the same. Have a look, and if you have any questions, feel free to ask further: http://bbs.hcbbs.com/viewthread.php?tid=173055&page=1#pid748641
The built-in orifice plate is an integration of an orifice plate and a differential pressure transmitter, with a relatively small diameter.
The selection of the built-in orifice plate is related to the flow rate and the properties of the medium. It is generally used for lower flow rates and when the medium is relatively clean. Similar to what we commonly refer to as an \"integrated orifice plate,\" since it is a non-standard throttling device, its calculation methods must be provided by the manufacturer; currently, FOXBORO/EMERSON are the brands commonly used for this purpose.
The selection of an internal orifice plate is primarily based on the size of the pipeline; orifice plates are not suitable for use in pipes that are too small. That is, an integrated orifice plate.
The built-in orifice plate is usually installed inside the transmitter, resulting in a built-in orifice plate transmitter; it is generally used in applications where the pipe diameter is less than 50, but its accuracy is not high, typically around 5%
A standard orifice plate typically consists of an orifice disc plus a pressure tapping flange, while an embedded orifice plate includes the orifice disc, pressure tapping flange, and a straight pipe section; it is generally used in pipelines with small diameters. The integrated orifice plate comes out of the factory with the transmitter already integrated. Regarding built-in integrated orifice plates, you can take a look at Rosemount’s 3051SFP and 3095MFP – it might teach you something!
It is generally used when the pipe size is less than 2\", and there are requirements regarding straight sections of pipe: 15D upstream and 5D downstream.