Environmental protection (such as automobile exhaust testing, laboratory gas composition analysis, etc.) often need to use gas sampling analysis, the micro- vacuum pump , miniature pump, miniature pump, micro gas sampling pump, micro gas circulation pump how to distinguish it ? Scientific research, medical care, environmental protection and other institutions or industries, often to use miniature vacuum pump, micro air pump, miniature suction pump, micro gas sampling pump, micro gas circulation pump. Depending on the application, miniature vacuum pump can be divided into: miniature vacuum pump, gas sampling pump, gas circulation pump, suction pump, suction pump and other types. 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. The true sense of the miniature vacuum pump, such as a miniature vacuum pump VAA series: is a long time for the closed container vacuum pump, it can drive a larger load. Widely used in: suction side may be equipped with valves , need long-term continuous operation with a large load or vacuum object adsorption and other occasions, such as system pressure, continuous 24-hour operation, speed up liquid filtration and so on. The gas sampling pump, such as a micro-pump PM series, the pressure difference between inside and outside the pump work is small, so it with a small load belt, but it is because of the weak load capacity, precisely for Gas sampling, intermittent use or on the pump noise, the volume of more stringent requirements of the occasion. Such as automobile exhaust testing, gas composition analysis, microbiological sampling and so on. 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 actual situation or advice to professionals 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 reliable indicators of its work is not the same, please be sure to consult professionals to purchase.
Compared to traditional bicycles, folding bicycles can be more convenient to use.
The small size of the foldable Bike allows you to take it on buses, subways and other means of transport or in lifts, making it the best choice for convenient urban commuting. You can easily put it in the trunk of your car and take it to your destination to ride your bike, and it's affordable, compared to mountain bike road bikes which are more cost-effective in price. The Foldable Bike Parts usually cheaper than the mountain bike parts. Such as the Bicycle Hub, the frame, etc.
However, the drawbacks are also obvious; the folding frame are not as strong as the one-piece frame of a mountain bike, and climbing hills is more strenuous than with a mountain bike, btw, the front Folding Bike Hub is too small for force. It is slower and less comfortable than a mountain bike on long rides.
If you ride in the city, or go for a short ride once in a while, it is fine to buy a folding bike. If you climb a lot, like to go off-road, or ride long distances, the mountain bike or the road bike is more recommended.
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