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Is the choice of a centrifugal pump or a volumetric pump in a pharmaceutical laboratory?
Performance: In order to be able to select the type of pump that is suitable in the pharmaceutical laboratory, it is necessary to have a deep understanding of its performance and understand the difference in its specific working principle. To this end, we must understand that the centrifugal pump is dependent on the pressure (or The variable flow phenomenon of the indenter, while the positive displacement pump has a more or less constant flow phenomenon independent of the pressure. Viscosity:...
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How to clean the battery cooling system of new energy vehicles?
The battery cooling system of the new energy model first unscrews the three screws on the upper part of the wet curtain, holds the louvers on the upper part of the wet curtain, gently pulls the wet curtain outward and then lifts it up slightly to remove the wet curtain. Then remove the top cover and the water distribution pipe assembly, unscrew the screw on the top cover, lift the top cover up, remove the hose clamp on the water pipe cooling fan and loosen the water supply pipe. The assembly ...
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Refrigeration heating circulator list resonance fault description
Refrigeration heating circulator leaderboard works: When the temperature of the reactor, reactor, rotary evaporator, extraction equipment, etc. of the refrigeration heating circulator needs to be rapidly increased or lowered, the equipment can quickly reach the set temperature. LNEYA's refrigeration and heating circulator list adopts a fully enclosed circulation system to avoid high temperature oil mist odor and low temperature absorption of moisture, which ensures that the working environmen...
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How to use multiple reactors for high and low temperature integrated machine
Multiple reactors high and low temperature integrated machine temperature control system will be connected with thermal conductive synthetic oil and power supply before use, and multiple reactor high and low temperature integrated machine temperature control system outlet port will be connected with the second field inlet, and the circulation device inlet port will be connected. It is connected to the second field exit to make it a closed loop system. Multiple reactors high and low temperatur...
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How to solve the problem of poor cooling performance of the heat transfer oil circulation system?
Some heat-conducting oil circulation systems will not be as good as before after 3 months of use. At this time, it is recommended to contact the professional after-sales department to check the user's power supply and whether the equipment is normal. The test heat conduction oil circulation system is set to cool operation, and the working pressure is 4.5kg/cm2. Considering that the variable frequency heat transfer oil circulation system uses the electronic expansion valve to throttle, it is n...
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Comment le conducteur d'essai de la batterie du véhicule électrique est-il mis à la terre ?
If the electric vehicle battery test is not isolated between the AC power source and the drive DC bus (such as a transformer), do not connect the non-isolated port of the DC bus or the ground of the non-isolated signal to the ground, which may result in equipment damage and personal injury. Because the common voltage of the AC is not to earth, there may be a high voltage between the DC bus ground and the earth. In most electric vehicle battery test systems, all common ground and earth are con...
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Chambre d'essai d'impact multifonctionnelle à haute et basse température élément de qualité et de prix
Especially when purchasing multi-functional high and low temperature impact test chambers, the price factor often determines the quality of its products. After all, manufacturers have to survive. It is unlikely that they will sell high-quality equipment at low prices, so people are buying When paying attention to the quality of the product, only the quality can guarantee the effect that the user wants in the course of its use. Although the price of the multi-functional high and low temperatur...
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Effet de l'instrument d'évaporation pour l'expérience à basse température sur le système de réfrigération
According to different models, the choice of evaporators for low-temperature experiment special instruments is also different, such as box-type low temperature experiment special instruments, using water tank coil evaporator; open low temperature experiment special instrument and screw type refrigerator, then choose Shell and tube evaporator; for special instruments for acid and alkali resistance low temperature experiments, titanium tube evaporator or stainless steel plate exchanger can be s...
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High precision semiconductor incubator maintenance instructions
The high-precision semiconductor incubator is in the state of the evaporator as a gas refrigerant; after the adiabatic shrinkage of the shrinking machine, it becomes a high-temperature and high-pressure state, and the contracted gas refrigerant is condensed in the condenser by equal pressure, and is converted by condensation. The liquid refrigerant is expanded into a low pressure through a throttle valve to become a gas-liquid mixture. The liquid refrigerant at low temperature and low pressur...
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Quels sont les effets d'une panne de courant sur une boîte froide cryogénique à l'azote liquide ?
Different industries have different temperature requirements for liquid nitrogen cryogenic cryostats. Of course, there are many types of cryogenic cryostats. The refrigeration methods used in different industries are different. Wuxi Guanya LNEYA uses compressor refrigeration. The cooling effect that can be achieved is almost the same as that of the liquid nitrogen cryogenic cold box. However, there are still customers who use liquid nitrogen cryogenic cryostats, and customers who encounter a ...
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