The difference between the hottest micro vacuum pu

2022-10-18
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The difference between micro vacuum pump and gas sampling pump

usually we call small volume pumps that can produce negative pressure as micro vacuum pumps, but we should strictly distinguish them in product selection

micro vacuum pumps in the real sense (such as VM series, VAA series, PK series, PC series, VCA series, VCC series, VCH series, pH series, FM series, FAA series, PCF series, etc.) are pumps that can vacuum closed containers for a long time, which can drive a large load. While the gas sampling pump (such as PM series, SA series, Sb Series) operates with a small pressure difference inside and outside the pump chamber, so the load it carries is very small. It is because of the different requirements for load capacity that the spare parts selected by the micro vacuum pump and the gas sampling pump are very different

micro vacuum pump has high requirements for diaphragm and motor. For these two main parts, the fatigue strength, reliability, life and other technical indicators are required to meet the standard under the condition of load, which is different from the gas sampling pump, which only requires adding no more than 20% of the regenerated composite membrane material standard under the extremely light load (the trial verification shows that the gas sampling pump is easy to be damaged if these industries do not transform and upgrade at present). Therefore, the cost difference between the two kinds of micropumps with high load control accuracy is large

to sum up, if the micro vacuum pump is used for gas sampling, it must be highly reliable, but the price is high; If the gas sampling pump is used in the occasion with slightly larger load, its reliability and service life will be greatly reduced, and even it will not work normally, although it has advantages in price. It is best to consult the technical department when selecting the model, so as to take into account the cost and performance. Some gas sampling pumps can also achieve better vacuum degree and flow index, but achieving this technical index and being able to work reliably for a long time under this index are two different things. For example, if a micro pump can reach a vacuum of 30KPa, can the pump work reliably when the air outlet of the pump is often under this vacuum? Therefore, the index reached by the pump is different from that it can work reliably. Please confirm with the dealer when purchasing. (end)

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