Hi,
Are you saying that from your professional experience Brymens don't maintain calibration for long(er) periods of time?
Maybe my Brymen was a one-off, I was just surprised that a brand new factory calibrated multimeter had to be readjusted in a few areas during external calibration to get within its own specifications.
I don't know that at all from the Fluke models at work.
I've been employed there in the testfield since 2003 and am now the manager and jointly responsible for the measuring equipment used.
We have a database for this measuring equipment, where all calibrations since procurement are stored and of course also failures.
No Fluke has ever failed in these years.
Even an ancient Fluke 8060A (100khz TRMS !!!) has survived every calibration until its "natural" retirement.
This is a quality that Brymen must first prove over the decades.
That is why I personally do not let anything come on Fluke meters, it is simply professional quality that has its price and they are simply the industry standard.
Still, I like my BM869s, it has many good approaches and is hard to beat for the money.
And you can buy almost 3 BM869s for the nominal price of an 87V, so it wasn't hard for me to decide for personal use.
Where did you send it to be calibrated (if not in-house?). Thanks
Welectron offers a calibration service, not only for multimeters (you can choose) and either according to ISO or even DakkS.
They don't do it themselves, they then send it on to the lab.
https://www.welectron.com/Brymen-Multimeter-BM780-BM850s-BM860s-ISO-CalibrationI think this service is good, as a private person you usually can't get it so easily.