Micromeritics FlowSorb III 2305 Operator's Manual page 4

Table of Contents
3. OPERATION
Preparing the FlowSorb for Operation . . . . . . . . . . . . . . . . . . . . . . . 3-1
Degassing the Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Degassing Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Sample Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Performing a Single-Point Surface Area Measurement . . . . . . . . . . . . . . 3-5
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Performing a Multipoint Surface Area Measurement . . . . . . . . . . . . . . . 3-11
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14
Calculating the Result
Preparing the FlowSorb for Idle Periods . . . . . . . . . . . . . . . . . . . . . 3-17
4. TROUBLESHOOTING AND MAINTENANCE
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Detector Drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Low Results On X10 Range . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Erratically High Results . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Non-Reproducible Calibrations . . . . . . . . . . . . . . . . . . . . . . . 4-3
Surface Area Display Not Clearing to Zero . . . . . . . . . . . . . . . . 4-4
Degas Temperature Fails to Function Properly . . . . . . . . . . . . . . . 4-4
Display and Indicators Fail to Illuminate . . . . . . . . . . . . . . . . . . 4-5
Hard-to-Release Sample Holder . . . . . . . . . . . . . . . . . . . . . . . 4-5
Substantial Difference Between Adsorption and Desorption Result . . . . 4-5
Lodged Flowmeter Float . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Replacing the Septum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
5. ORDERING INFORMATION
APPENDICES
Appendix A: Theory
Appendix B: Other Gases and Compositions
Appendix C: Specialty Gas Source
Appendix D: Sample Tubes
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FlowSorb III 2305 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
FlowSorb III 2310 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
. . . . . . . . . . . . . . . . . . . . . . . . . 3-15
FlowSorb III
Aug 00