Ring chamber orifice flowmeter | Principle of orifice flowmeter

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1. Introduction to Orifice Flow Meter: With known parameters, the relationship between differential pressure and flow rate can be derived based on the principle of flow continuity and Bernoulli equation to obtain the flow rate. The basic formula is as follows: c - dimensionless outflow coefficient d - diameter of the orifice or throat of the throttling element under working conditions D - inner diameter qm of the upstream pipeline under working conditions - mass flow rate Kg/sqv - volume flow rate m³ /sß - Density of dimensionless fluid with diameter ratio d/D Kg/m³ The structure of the dimensionless orifice flowmeter with expansion coefficient consists of a throttling device and a pressure measuring device, including a ring chamber, a pressure measuring flange, a clamping ring, and a pressure guiding pipe. The installation requirements for the orifice flowmeter are generally the first 10D and the second 5D for the straight pipe section. Therefore, when selecting an orifice flowmeter, it is necessary to choose a flowmeter suitable for the on-site industrial and mining conditions. The fluid filled in the pipeline, when passing through the throttling device inside the pipeline, will cause local contraction of the flow beam at the throttling element of the throttling device, thereby increasing the flow velocity. The structure of the throttling device is easy to replicate, simple and sturdy, with stable and reliable performance, long service life, and low price. ▲ Orifice plate calculation adopts international standards and processing ▲ It has a wide range of applications, all single-phase flows can be measured, and some mixed phase flows can also be applied. The standard throttling device does not require real flow calibration and can be put into use. The installation of the integrated orifice plate is easier, without the need for pressure pipes, and can be directly connected to differential pressure transmitters and pressure transmitters. Intelligent features ▲ Adopting imported monocrystalline silicon intelligent differential pressure sensor ▲ High precision, perfect self diagnostic function ▲ Intelligent orifice flowmeter with programmable range adjustment. ▲ It can display cumulative flow rate, instantaneous flow rate, pressure, and temperature simultaneously. ▲ In addition to online and dynamic full compensation functions, it also has self diagnosis and self setting range. ▲ Equipped with multiple communication interfaces ▲ High stability ▲ Wide range, stool difference greater than 10:1 Intelligent technical indicators ▲ High precision: ± 0.075% ▲ High stability: better than 0.1% FS/year ▲ High static pressure: 40MPa ▲ Continuous operation for 5 years without calibration ▲ Neglected temperature and static pressure effects ▲ Anti high overpressure intelligent orifice plate flowmeter features imported monocrystalline silicon intelligent differential pressure sensor with high precision and complete self diagnostic function Intelligent orifice plate flowmeter with programmable range adjustment. The intelligent orifice flowmeter can simultaneously display cumulative flow rate, instantaneous flow rate, pressure, and temperature. In addition to online and dynamic full compensation functions, the intelligent orifice flowmeter also has self diagnosis and self setting range. Equipped with multiple communication interfaces, high stability, wide range, and throttling components greater than 10:1: standard orifice plate, standa

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