A Tour of the ABB’s Stonehouse flow meter calibration rig in the UK
Here’s a video of something that few get to see or appreciate, a calibration rig for a large, industrial flow meter calibration facility. This one is a very large one, for flowmeters up to 3000 mm (nearly 10 feet) in diameter at >ABB’s facility in the UK.
Do all flowmeters need to be calibrated. You bet they do! Like all measurement devices, flowmeter are no more precise than their fundamental calibration.
Sometimes it is an easy task; one can calibrate a simple, low flow meter with some water a volume measurement device (a bucket?) and a timer (stopwatch). For others, especially ones for very large flow rates and unusual fluids, it can be a challenge.

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Great article , thanks for posting it was very useful.
Do I really need to calibrated my gas flow gauge?
What are the consequences if I don’t calibrate my gas flow gauge?
If calibration is required for my gaf flow gauge and I don’t have a calibration kit, what is the alternative to ensure that my gas flow gauge os working well?
great article. It would help me alot…thanks…