Internal calibration method for company’s flowmeters
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For example, in terms of quality, vortex flowmeters, and electromagnetic flowmeters – what are the various methods for internal calibration? \ud83d\ude0a
For small diameters, use a barrel; for large diameters, monitor the liquid level in the storage tank
For low flow rates, use a scale + bucket, or even a measuring cup； For high flow rates, only the volume tanks at standard points can be considered for comparison. If money and time are no concern, send it to the local metrology institute for approval.
We usually carry out physical comparisons, and also turn off the upstream and downstream hand valves while in operation to calibrate the zero point.
In places like meter jacks, it is possible to connect two flow meters in series.
1. Level method: Standard circular or square tanks are used, with the flow rate determined based on volume ratios. 2. Weighing method: Similar to truck scales. 3. Comparison using other calibrated flow meters. 4. High-precision flow meters are used to calibrate low-precision flow meters. 5. Use square or circular container devices with easily calculable volumes inside the apparatus to compare the flow meter using the level method. 6. Delivery.