Differential pressure for level measurement
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The orifice plate is used to measure liquid level by differential pressure, with a range of 0-2.5 Kpa. How can this be converted into flow rate? The pipe diameter is DN50 and the medium is water. Please help me solve this issue
The problem itself is flawed. What is level measurement using orifice plates? Orifice plates are used to measure flow rate.
To determine the inner diameter of the orifice plate, there is a formula: Qv = CεA/sqrt(2ΔP/(1-β^4)/ρ1), where C is the discharge coefficient； ε is the coefficient of expansion, A is the cross-sectional area of the orifice in the throttling element, in M＾2; ΔP is the pressure difference generated by the throttling device, in Pa; β is the diameter ratio, ρ1 is the density of the fluid being measured at point I-I, in kg/m3
Ordinary differential pressure flow meter: there is a square-root relationship between differential pressure and flow rate.
I had only seen orifice plates used for measuring flow rate before; it was the first time I heard of them being used for measuring liquid level. There is a relationship between the differential pressure generated by an orifice plate and the flow rate – I looked it up on Baidu
First of all, an orifice plate is used to measure flow rate； Secondly, based on the information you provided, it is not possible to convert the pressure difference into flow rate.