Selection of biogas flow meter
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The biogas pipeline with a DN32 diameter requires an additional flow meter for measurement. Could you experts advise me on which type of flow meter would be suitable? ? ? Vortex flow meter, gas turbine flow meter, or what? ? ?
Turbines or orifice plates – both offer good precision and are inexpensive
This post was last edited by kashow77 on 2020-5-2 08:30. Gas ultrasonic flowmeters: We have cases of use in the biogas industry (capable of measuring moisture; the probe can tolerate fouling up to 8 mm thick). --------------------------------------- Biogas flow measurement: User – ZJ Dushan Energy; Pipe diameter: DN200; Pressure: Atmospheric pressure； Temperature: ≤50℃ ； Flow rate range: 0~800 m3/h ； ------------------------------------- Characteristics of the gas to be tested in this case: low pressure, high moisture content (with condensed water), and the gas is relatively dirty
Generally, during the transportation of biogas, the static pressure in the pipelines is not high, which may pose certain limitations when using vortex flow meters. To measure gases with such a low head, a turbine, an orifice plate, or a balanced flow meter can be used. Since the temperature and pressure of biogas can vary significantly, it is advisable to add temperature and pressure compensation as well.
The turbine needs to operate on time; however, if the biogas contains impurities, the turbine may wear out over time
Yes, pressurization is required in such operating conditions, and vortex flowmeters provide relatively accurate measurement.
The A+Qmc balanced flow meter can be used; it is a product from NASA in the United States, with an accuracy of 0.25%–0.75%, and it also has very low pressure loss, making it highly suitable for measuring biogas. Biogas consists of multiple components, its flow rate is low, and the range ratio is relatively large; American space technology.