About miniature vacuum pump and gas sampling pump difference

Usually we can produce a negative pressure of the small volume pumps are called miniature vacuum pump, but the product selection must be strictly distinguished. Truly miniature vacuum pumps (such as the VM series, PK series, PC series, etc.) are pumps that can evacuate airtight containers over long periods of time, which can drive a large load. The gas sampling pump (such as PM series, PS series, etc.) work pump pressure inside and outside the smaller, so it with a very small load. It is because of the different requirements of load capacity, resulting in micro-vacuum pump and gas sampling pump parts are very different. Miniature vacuum pumps have high demands on the diaphragm and the motor. For the two main parts, the fatigue strength, reliability, life expectancy and other technical indicators are required to meet the standard conditions with the load, unlike the gas sampling pump only required under very light load standards (test proved that the load slightly Large gas sampling pump is easy to damage). Therefore, the cost of the two micropumps varies greatly. In summary, if the miniature vacuum pump for gas sampling, is bound to get high reliability, longer life expectancy, but the cost is high; if the gas sampling pump is used in slightly larger load situations, reliability, life Greatly reduced, and even unable to work, although it has greater advantages in cost. Selection of the best combination of their own situation or to our advice, in order to take into account cost and performance. Some gas sampling pump can achieve better vacuum and flow indicators. However, it is two different things to achieve this technical indicator and to be able to work reliably for a long time under this indicator. For example, a micro-pump, can reach 30KPa vacuum, then when the pump suction often in this vacuum, the pump can work reliably? Therefore, the pump can reach the target and it can work reliably is not the same indicator, please confirm to the manufacturer or dealer to confirm.