Selection of gas flow meters for trade settlement
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As the title suggests, I need a flow meter with a DN80 size and a flow rate of 1000 kg/h. However, the density of the gas is very low, at 3 kg/m3. Initially, I planned to use a mass flow meter, but most of these meters have a minimum density requirement... I checked the specifications for E+H models, and in many of them there is no such restriction... So can it be used? For gases that are subject to trade settlement, gas turbine flow meters, thermal mass flow meters, and multi-channel ultrasonic flow meters can be considered. Are orifice plates generally of low precision?
The issue is as follows: you can first consider mass flow meters. If manufacturers of mass flow meters, such as Rosemount or E+H, are unable to provide what’s needed, then you can opt for FCI thermal mass flow meters – they have a wide measurement range and stable performance; I’ve used them both!
Agree with what was said above. It might be better to use a higher-quality turbine flowmeter, and it needs to be calibrated regularly
FCI KURZ SIERRA is the birthplace of thermal gas mass flow meters.
While orifice plates can be used as well, their accuracy is only at the level of 1.0; strict compliance is required regarding the straight pipe sections needed for installation as well as the installation location. The key issue is that the secondary instruments connected to them, such as differential pressure transmitters and integrators, also have their own errors. Therefore, quality gas turbines are relatively the better choice
Well, I’ve decided to go with a mass flow meter; I consulted the agent in Cologne before, and it’s okay even if the density is low.
The accuracy grade of orifice plates is relatively low; vortex flow meters are also a good option
A better turbine flow meter would work as well
Little Black Pig, I remember you’re from a company in Xi’an – which one exactly? Given your excellent skills, add me on Q at 281473823 so I can learn more from you
For measuring gases with very low density, it is best to use high-quality vortex flowmeters; other instruments don’t seem to be very suitable for this purpose.
For trade settlement, it is recommended to use vortex flow meters or turbine flow meters