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TABLE OF CONTENTS
1. Introduction .............................................................................................. 1
2. About the VSA .......................................................................................... 2
2.1 Moisture Sorption Isotherms ..................................................................... 2
2.2 Measurement Method................................................................................3
2.3 Specifications ............................................................................................4
2.4 User Interface and Menus .......................................................................... 5
2.4.1 Isotherm Tab .................................................................................... 6
2.4.2 Measurement Tab ............................................................................ 7
2.4.3 Configuration Tab .............................................................................7
2.4.4 Data Tab ......................................................................................... 15
3. Theory ........................................................................................................ 18
3.1 Combining DVS and DDI in One Instrument ............................................. 19
3.2 Hysteresis ................................................................................................ 20
3.3 Nonequilibrium ........................................................................................ 22
3.4 Matrix Changes ........................................................................................ 22
3.5 Working Isotherms ...................................................................................23
3.6 Isotherm Models ...................................................................................... 24
3.7 Uses for Moisture Sorption Isotherms ..................................................... 25
4. Installation ..............................................................................................27
5. Cleaning and Maintenance ............................................................ 31
5.1 Desiccant Replacement ........................................................................... 31
5.2 Sample Chamber Cleaning ....................................................................... 34
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2.2022