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TABLE OF CONTENTS
I. INTRODUCTION 7
II. INSTALLATION AND COMPONENTS 9
Location 9
Mains Power 9
Gas Tank Connections 10
Sample Cells and Sample Cell Holder 10
Toggle Valves 11
Needle Valves 11
Selector Valve 11
Pressure Display and Transducer 11
Pressure Relief Valve 12
Calibration Status 12
RS232 Port 12
III. SAMPLE PREPARATION 13
Purging Method 13
Vacuum Method 13
IV. SAMPLE ANALYSIS 14
Stepwise measurement instructions 14
Density Worksheet 15
V. CALIBRATION 16
Recalibration 16
Calibration Spheres 19
VI. SOURCES OF ERROR 20
Non-ideal gas behavior 20
Diffusion/Absorption 20
Impure gases 20
Insufficiently prepared samples 20
The size of the gas molecule 20
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