What is a biogas flowmeter and what gases can it measure?

『Selection of biogas flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

How to choose a flow meter when measuring liquids?

When selecting a flow meter for measuring liquids, it is necessary to consider the characteristics of the medium, measurement parameters, installation conditions, and functional requirements, and match them with the applicable scenarios of different types of flow meters. The specific selection steps and applicability of various types of flow meters are as follows:

First, clarify the core parameters. Users need to provide the following parameters to narrow down the selection range: medium type: conductivity, corrosiveness, cleanliness (such as water, ammonia water, sewage, chemical raw materials, alcohol, deionized water, etc.). Physical properties of the medium: temperature, density, viscosity (affecting fluid fluidity and flow meter response). Pressure range: Flow meters with pressure resistant design should be matched for high or low pressure environments. Flow range: minimum flow, common flow, maximum flow (determining flow meter range and accuracy). Pipeline diameter: The flowmeter needs to match the pipeline size to avoid installation issues. Functional requirements: Power supply mode (such as 24V DC, battery power), output signal (such as 4-20mA, pulse, etc.) RS485）、 Display requirements (on-site display or remote monitoring), measurement accuracy (such as ± 0.5%, ± 1%). Installation environment: whether there is electromagnetic interference, vibration, high temperature or corrosive gas, and whether the space meets the installation conditions (such as the length of the straight pipe section). Secondly, based on the characteristics of the medium, different types of flow meters have significant differences in adaptability to the medium. It is necess

ary to prioritize matching the medium type: electromagnetic flow meter. Applicable medium: conductive liquid (conductivity ≥ 5 μ S/cm), such as water, ammonia water, sewage, chemical raw materials, acid-base solutions, etc. Advantages: No pressure loss, high measurement accuracy (± 0.5%~± 1%), and ability to measure corrosive media. Restriction: Cannot measure gases, vapors, or non-conductive liquids (such as petroleum, organic solvents). Vortex flowmeter: Applicable media: gases (steam, air, oxygen, nitrogen, biogas, chlorine) and liquids (alcohol, deionized water). Advantages: Simple structure, low pressure loss, wide range ratio (usually 10:1~20:1). Limitations: Sensitive to vibration, avoid strong vibration environments; Accuracy decreases at low flow rates. Ultrasonic flowmeter: Applicable medium: clean liquids (such as water, deionized water), especially suitable for large-diameter pipelines. Advantages: Non contact measurement, no pressure loss, and the ability to measure bidirectional flow. Limitations: High cleanliness requirements for the medium, increased error when containing bubbles or particles; The price is relatively high. Spiral vortex flowmeter: applicable medium: high-precision gas or liquid measurement (such as natural gas, liquefied gas, clean water). Advantages: High precision (± 0.5%~± 1.5%), wide range ratio (usually 15:1~30:1). Limitations: High cleanliness requirements for the medium, and easy blockage when containing impurities. Orifice flowmeter: Applicable medium: places with low measurement requirements, or as an alternative solution when other flowmeters cannot measure (such as high temperature, high pressure, high viscosity media). Advantages: Simple structure, low cost, high temperature a

How to choose a flow meter when measuring liquids?

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