Looking for recommendations for national-level metrology calibration centers
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Our company is currently using two A+K balanced flow meters with a DN400 diameter, along with ABB differential pressure transmitters and Yokogawa pressure transmitter controllers. The accuracy of these devices is 0.5, and the medium used is steam. The two devices are installed in a straight pipe section, 10 meters apart from each other. When they were first installed, the system error of both devices was around 1–4 T per day; however, recently this error increased to around 20 T. Both secondary meters have been replaced, but the problem persists! I would appreciate it if various teachers could recommend institutions across the country that are capable of calibrating large-diameter flow meters, so that the flow meters can be recalibrated (requirements: the standard device used for calibration must have an accuracy of over 0.5, with a flow rate of 20–100 T/h)
With this type of flowmeter, calibration can only be carried out by the manufacturer; there aren’t many devices of this kind. Even if calibration is possible, no legally recognized certificate is issued, **as there are no such standards – only corporate standards exist.
Ask Yantai; there is a **Steam Metering and Testing Center** there – see if they can carry out real-flow calibration
Is A+K the company that supplied cone flowmeters to Dalian Petrochemical, resulting in deaths due to explosions? It’s all a trick
:) Accidents can happen. This is very dangerous.
1. Even if you have money, don’t be too reckless when digging~~~ Otherwise, you’ll ruin a **-class calibration institution. . . Calibration cannot fix the drift, flickering, and other issues inherent in the instrument itself. 2. If you’re not going to buy so many standard throttling elements, then why buy some cheap A+K models? It seems like you really don’t intend to obtain accurate measurements anyway, right? . . . Hehe. . . 3. Why just pick up a bowl of rice and head to the toilet? Trying to catch fish by climbing a tree? . . So you just multiply by a coefficient and adjust the two values to make them match, and that’s it, right? What’s the use of accuracy anyway? . . It’s really of no use to you guys. . . Right? . . . . Bro, he must have hit the nail on the head with what he said {:3_51:}
This one in Yantai can only calibrate sizes below DN300
I’m not sure exactly; we bought it in June this year
Although you’re a bit silly! But I’m really grateful for your suggestion! We use it for trade settlements, so high precision is required!
Although you’re a bit silly! But I’m really grateful for your suggestion! We use it for trade settlements, so high precision is required!
Also, the vapor pressure should be below 100