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1. Open channel box type flowmeter
2. Which type of flowmeter is more suitable for measuring biogas
The most suitable flowmeters for measuring biogas mainly include vortex flow meters, electromagnetic flow meters, and thermal gas mass flow meters, and suitable products can be selected according to actual working conditions. 1. The vortex flowmeter works based on the Karman vortex principle, and calculates the flow rate by detecting the regular vortex frequency generated by the vortex generator. Advantages: Simple structure, easy installation, high precision measurement accuracy, wide range ratio, and can adapt to a certain temperature and pressure fluctuation range. Applicable scenarios: Suitable for situations where the composition of biogas is relatively clean and there are basic requirements for measurement accuracy
2. The electromagnetic flowmeter determines the flow rate by measuring the induced electromotive force generated by the cutting magnetic field of a conductive fluid based on Faradays law of electromagnetic induction. Advantages: High measurement accuracy, not affected by the density, viscosity, and temperature of biogas, and low pipeline pressure loss. Applicable scenarios: Suitable for scenarios where biogas contains certain moisture or impurities and requires high measurement accuracy for infiltration. 3. Thermal gas mass flow meters use the principle of thermal conduction to directly calculate mass flow rate by measuring the heat carried away by the gas flowing through the sensor. Advantages: It can directly output mass flow data without additional temperature and pressure compensation, has a large range ratio, and can also measure low flow rate biogas. Applicable scenarios: Sui
3. Intelligent Vortex Flow Meter Diameter and Flow Range
Instrument diameter and flow range are key parameters for selecting intelligent vortex flow meters.
. Flow meters with different diameters have different measurement ranges and output frequency ranges. For example, for a 150mm caliber flowmeter, the measurement range for liquid gas and steam is from 3m/h to 636m/h, and the output frequency range is between 4Hz and 446Hz; For larger 250mm apertures, the measurement range is extended to 65-1250m/h, and the output frequency range is 1.5-25Hz. The selection of these parameters needs to be determined according to actual application requirements. The application of intelligent vortex flowmeter in biogas pipelines requires special attention, as the flow rate of biogas pipelines is relatively small and usually requires reducing the diameter to ensure measurement accuracy. It is very important to choose a suitable Jiaoling flowmeter in biogas measurement. Firstly, it is necessary to understand the minimum flow rate, common flow rate, and maximum flow rate of biogas to ensure that the flow meter can effectively cover the measurement requirements. Meanwhile, as the biogas measurement site may not have a power source, a battery powered vortex flowmeter can be chosen to meet the on-site power supply conditions. If it is necessary to bring the display of the flowmeter indoors, an integrated vortex flowmeter can be selected, and the output signal can be transmitted to the indoor flow integrator through a cable to achieve on-site display. When installing a vortex flowmeter, special attention
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