Vacuum pumps with ECOTORQUE variable speed drive from Busch. Automatic adjustment to variations in vacuum demand.
Is it also possible to retrofit existing vacuum pumps? What is the difference between a variable speed drive (VSD) and a variable frequency drive (VFD) vacuum pump? DO YOU WANT TO IMPROVE YOUR PROCESS? We are happy to help. Contact our vacuum experts...
Calculation of Vacuum Systems Docsity.com 2 Lay Out 3.7.1 Sources of gas in vacuum systems 3.7.2 Pump down in the viscous range 3.7.3 Pump down in the molecular range 3.7.4 Steady state with distributed gas load 3.7.5 Nomographic calculation of conductances ...
H. Hartwig and J. S. Kouptsidis, “A new approach for computing diode sputter-ion pump characteristics”,J. Vac. Sci. Technol.11(6), pp. 1154–1159 (1974). ArticleADSGoogle Scholar W. Ho, R. K. Wang, and T. P. Keng, “Calculation of sputtering ion pump speed”,J. Vac. Sci...
lationmethodsforpumpingperformanceofasinglevanevacuumpumppresented.Thecalculationmethodsforasinglevanevacu umpumpareusefulfordesigningthesinglevanevacuumpump. Keywords:vanevacuumpump;geometrymodel;pumpingperformance;pumpingspeed;maximumvacuum;experiment 0 引言 贯穿式旋片真空泵优化了传统的分离旋片,取消 了旋片间的支撑...
select article The approximate calculation of transmission probabilities for the conductance of tubulations in the molecular flow regime Research articleAbstract only The approximate calculation of transmission probabilities for the conductance of tubulations in the molecular flow regime ...
Computer supported design of vacuum systems: calculation of pumping speed and simulation of pump down: Th Gebele, W Buschbeck and W Schwarz, Leybold AG, PO Box 1555, D-6450 Hanau, FRGdoi:10.1016/0042-207X(88)90504-0ELSEVIERVacuum
based on a thermal conversion calculation when the gas pressure in the suction side is about 380 Torr. When the vacuum pump operates with the suction side of the pump being closed, a cooling gas is introduced into a discharge side of the pump to cool its inside. The cooling gas is ...
Charge refrigerant as required upon calculation. Otherwise, the device may be damaged. Procedure Close the high-pressure valve and low-pressure valve of the pressure gauge. Replace the vacuum pump with the steel cylinder of liquid refrigerant, as shown in Figure 6-64. Figure 6-64 Precharging...
Since the Holweck stage must have a sufficiently high suction capacity at its entry side in order to be able to handle the gas quantity which is conveyed by the last pump stage of the turbomolecular pump, a correspondingly large channel depth must exist to this point. As a result, the cha...