I would like to ask, are elliptical gear flowmeters widely used these days?
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Are there any requirements for the straight pipe sections before and after this flow meter?
This type of meter has no requirement for straight sections, making it quite useful; however, it is essential that the medium be clean, with an appropriate filter installed in front of it.
The main reason it’s not widely used is its high price; it doesn’t have a price advantage, even though this type of watch is actually very useful. The accuracy is also good.
This thing is very rare in the market; it’s not widely available.
This type of meter has no requirement for straight sections, making it quite useful; however, it is essential that the medium be clean, with an appropriate filter installed in front of it.
Maintenance requirements are high and the failure rate is not low. One of the major characteristics of positive displacement devices is high pressure loss. In terms of instrument maintenance, if the filter in front of the instrument is not cleaned promptly, it leads to significant pressure loss; as a result, the remaining pressure difference before and after the instrument is not sufficient to drive the rotor of the flow meter. This issue is most evident when using flow meters in industrial processes. Especially when dealing with viscous fuel oils, there is a concern that the flow meter might get stuck, resulting in insufficient flow and thus causing the furnace to shut down. As a result, process operators are very cautious when using such flow meters, and they even avoid closing the bypass lines, which leads to a low pressure difference before and after the meter and prevents it from rotating, thereby resulting in failure in its operation. Furthermore, impurities can cause wear and corrosion on the rotor, as well as sticking issues that result in the rotor failing to rotate; in such cases, disassembly for repair is necessary. However, due to the heavy nature of rotor flowmeters and the fact that the rotor is located within the medium, repairs become very difficult, especially when the medium is dirty, greasy, sticky, or otherwise messy, making repairs challenging.