Which domestic flow meters offer the best cost-performance ratio?
Thread Content
It is mainly used for the metered and proportional combustion of air and natural gas in heating furnaces; domestic products are preferred as imported ones are more expensive. Due to the low profit margin on these products, imported ones cannot be used. The air temperature is around 200 degrees, while natural gas is at room temperature.
Which type of flow meter provides more accurate measurement?
Gas turbine, swirling vortex, thermal type
Based on the operating conditions described by the poster, it is recommended to use a thermal gas mass flow meter. The main considerations are ease of use and low costs for installation and maintenance.
It’s highly likely that a thermal type recommended is a scam!
Without specific pipe diameters, flow rate ranges, pressure values, it’s difficult to give a recommendation. The accuracy requirements also need to be specified, as well as whether control is involved.
Since the flow rate doesn’t change much, an orifice plate can be considered.
The original poster should clarify the specific process conditions, pipe diameter, flow rate range, pressure, accuracy requirements, and mixing control requirements, so that others can help you. Additionally, it would be good to explain whether the medium is clean and free of moisture. If the requirements are not high, consider using a (metrological-grade) intelligent spiral-in gas flow meter, which can ensure an accuracy of 1.5 grade and a range ratio of over 10:1. This flow meter generally has low requirements regarding the quality of the gas; as long as there is no severe vibration at the installation site and no significant electromagnetic interference, it is suitable for general use ； Gas intelligent turbine flowmeters can achieve higher precision, but they require a higher startup cost, are sensitive to the properties of the gas, and have strict requirements regarding the flow range (the flow rate must not exceed certain limits, otherwise it can damage the instrument) ； Thermal gas mass flow meters require stable gas composition (the environment at the installation site must be free of water and other impurities, otherwise the composition will change).