GIF Gate Valve - Practical Electron Microscopy and Database - - An Online Book - |
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Microanalysis | EM Book https://www.globalsino.com/EM/ | ||||||||
This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers. | ||||||||
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For both GIF imaging and spectrum acquisition, we need to make sure: The level of GIF camera chamber vacuum can be evaluated by comparing the current camera chamber vacuum reading to the good ones recorded historically. If the vacuum is poor, one step in the examination procedure to locate any leaks is to locate the control lines for the gate valve. One should have a black label, the other one a red label. Normally when the TEM is fully pumped down, the black control line should be pressurized and the gate valve should be open. When the TEM is not fully pumped down, the gate valve may be closed so that the red control line should be pressurized. With the TEM fully pumped down, it will swap the gate valve control lines to close the gate valve.
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The book author (Yougui Liao) welcomes your comments, suggestions, and corrections, please click here for submission. If you let book author know once you have cited this book, the brief information of your publication will appear on the “Times Cited” page. | ||||||||
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