I have used Drycal flowmeters previously and found them to be very effective. We were early adopters, (late 90s/early 00s i cannot remember when exactly), and we had fun with UKAS explaining the american standard they were supplied calibrated against and showing that they were fit for purpose without needing to be immediately sent for recalibration.
We don’t use them currently where i am working as our glass tube rotameters are still proving effective and I did look at prices 2 years ago but cannot justify the significant outlay to buy Drycals.
