What is a miniature vacuum pump? A miniature vacuum pump is also a miniature vacuum pump. Because of its small size, a miniature vacuum pump is usually called a miniature vacuum pump. Small vacuum pumps (i.e. micro vacuum pumps) refer to an instrument with one suction nozzle and one exhaust nozzle, which can continuously form vacuum or negative pressure at the inlet, a micro-positive pressure at the exhaust nozzle and a small working medium, mainly gas. Small vacuum pumps can be used for air conditioning, refrigeration equipment repair, medical equipment suction device, printing machinery, vacuum packaging, vacuum plastic suction, physical and chemical experiments and small devices requiring vacuum environment and other vacuum operations. The application scope covers many fields such as scientific research, gas sampling, instrument, chemical analysis, medical and health care, medical and health, biological engineering, automatic control, environmental protection, water treatment and so on.
Small vacuum pumps are not suitable for the removal of corrosive ferrous metals, chemical reactions on pump oil, gases containing particulate dust, and toxic gases containing too much oxygen and explosive. It can not be used as a transmission pump (i.e. pumping from one container to another).
The circumferential motion of the small vacuum pump motor makes the diaphragm inside the pump reciprocating by mechanical device, thus compresses and stretches the air in the fixed volume pump chamber to form a vacuum (negative pressure). Under the action of the pressure difference, the gas pressure (suction) is put into the pump chamber and then discharged from the exhaust outlet.
Attention should be paid to the use of small vacuum pumps:
1. Start-up with load.
If a small vacuum pump has a vacuum in its suction port before starting or a pressure in its exhaust port, another technical parameter of the pump should be considered: a large start-up load at the intake port and a large start-up load at the exhaust port.
2. Medium temperature of small vacuum pump. According to the temperature of the medium gas passing through the pump, choose the ordinary type or the high temperature type.
3. Reliability of small vacuum pumps. According to the severity of the consequences of the failure of the micro-pump, it is completely in accordance with its own requirements. Particular attention is paid to the fact that this parameter is measured under full load and uninterrupted operation, which is worse. If the actual operation is not full load or continuous operation, the value will be higher, depending on the working condition of the pump. This performance is a test of the manufacturer's technical strength. From the appearance of the product, we can see some, such as the use of special motors rather than ordinary low-cost motors, the weight is relatively heavy in the case of comparable volume, and so on. According to the price of the product, we can also know a little.
4. Electromagnetic interference of small vacuum pump. If a small vacuum pump is controlled by a precise circuit, it may be necessary to order a small vacuum pump with low electromagnetic interference, depending on the anti-interference capability of the circuit.
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显示标签为“Helium mass spectrometer leak detector”的博文。显示所有博文
显示标签为“Helium mass spectrometer leak detector”的博文。显示所有博文
2019年6月4日星期二
2019年5月13日星期一
Helium mass spectrometer leak detector
Helium mass spectrometer is a term used in gas industry. It uses helium or hydrogen as leak gas and uses gas analyzer to detect helium. The background noise of helium is low, its molecular weight and viscosity coefficient are small, so it is easy to pass through the leak hole and diffuse easily. In addition, helium inert gas does not corrode the equipment, so helium is often used as the leak indicator gas. The gas is sprayed onto the tested vessel with a gas analyzer (adjusted to the working state of helium reaction only). If there is a leak in the vessel, the analyzer will react, so as to know the location of the leak and the size of the leak.
Helium mass spectrometer for leak detection in power plants. The key components are imported, and the performance is stable and reliable. It not only has high sensitivity, but also is easy to operate. It can automatically switch between two filaments, adjust zero automatically, calibrate automatically and switch between automatic ranges.
Helium mass spectrometer leak detector advantages:
1. Portable design
2. The appearance of the equipment is beautiful and compact.
3. Design of LCD Touch Screen
4. Communication interface
5. Leak detection data can be easily output
helium-mass/Helium-Mass-Spectrometer-Leak-Detector-Price
Helium-mass-spectrometer-leak-detector-used-for-vacuum-test
Factory-Helium-mass-spectrometer-leak-detector
Helium mass spectrometer for leak detection in power plants. The key components are imported, and the performance is stable and reliable. It not only has high sensitivity, but also is easy to operate. It can automatically switch between two filaments, adjust zero automatically, calibrate automatically and switch between automatic ranges.
Helium mass spectrometer leak detector advantages:
1. Portable design
2. The appearance of the equipment is beautiful and compact.
3. Design of LCD Touch Screen
4. Communication interface
5. Leak detection data can be easily output
helium-mass/Helium-Mass-Spectrometer-Leak-Detector-Price
Helium-mass-spectrometer-leak-detector-used-for-vacuum-test
Factory-Helium-mass-spectrometer-leak-detector
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