Flow meter specifications
Last but not least, also the specifications itself have to be taken into consideration when selecting the right flow meter.
Accuracy
Naturally, an important factor of a flow meter is accuracy. To even suggest that accuracy is a variable seems ridiculous. Who would want an inaccurate meter? However, not all flow meters possess the same accuracy; some applications do not even require precision.
Repeatability
Repeatability means the number of times (%) you get the same results running the same test or measurement under the same conditions. Accuracy requires repeatability, but repeatability does not require accuracy. It just needs consistency. Therefore, it can be said that repeatability of a flow meter is often considered even more important than accuracy.
Turndown Ratio or Rangeability
This implies the range that a flow meter can accurately measure the fluid. Usually, it’s best to choose a flow meter with the greatest range available without compromising other components that are more critical.
Hygiene requirements
Flow meters for food, pharmaceuticals, and the medical industry especially demand sterile environments.
Cost
As stated above, this should include installation, maintenance and repairs over time. How much the meter costs to operate, like its electrical demands, can also increase the overall cost of the flow meter.