How to check whether an online flow meter is accurate
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For flow meters installed on process pipelines on-site, it is necessary to check their accuracy after they have been in use for some time. However, due to process-related reasons, these meters cannot be removed. Are there any portable flow meters that can be used for calibration and comparison? Thank you.
I know there is a type of ultrasonic meter that can be used for reference calibration.
I agree with the moderator’s opinion. I’ve also heard of portable ultrasonic flowmeters, but their accuracy seems to be quite low. If such a flowmeter is really important, it is recommended that the original poster purchase a mass flowmeter, which requires little maintenance; even in industrial applications, one can’t expect such flowmeters to be inaccurate! (In very rare cases, it may give incorrect results.) It’s also possible to analyze things like the material balance in the process, which can help determine roughly whether there is a problem with the flow meter!
Portable ones have ultrasound. However, ultrasonic flowmeters also have their limits of application; it seems they cannot be used for measuring gas phases. It can analyze water substances (river water, seawater, agricultural water, etc.), oils (pure fuel, lubricants, edible oils, etc.), chemical reagents, medicinal solutions, etc., water with high impurity levels (sewage, wastewater, agricultural water, etc.), slurries (sludge, mineral slurry, paper pulp and chemical slurries, etc.), and oils (non-pure fuel, heavy oil, crude oil, etc.)
Haiyou, I don’t know what type of flow meter you are referring to? If it’s a orifice plate, it’s relatively easy; but if it’s of the mass, vortex street, or electromagnetic type, it’s more difficult.
It can’t be disassembled; I just have to find a portable one. Please offer some comfort