3650 Portable O2 Analyzer - Glossary | 45 of 50 |
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Appendix A: Glossary
A.1 Common Units
Table
Unit | Meaning |
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%percentage, by weight
% vbar | percentage per volume, barometric pressure referenced |
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% vext | percentage per volume, sample pressure compensated |
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cc/kg | cubic centimeters per kilogram |
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g/kg | grams per kilogram |
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mg/L | milligrams per liter |
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ml/L | milliliters per liter |
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ppb | parts per billion, by weight |
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ppm | parts per million, by weight |
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V/V | volume per volume (ratio) |
A.2 Terms and Definitions
Table
Terms | Meaning | |
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Absolute pressure | Absolute pressure is relative pressure, plus atmospheric pressure | |
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Concentration | The relative content of a component in a gaseous or liquid media. | |
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Conductivity | The reciprocal of electrical resistivity. | |
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Headspace | The empty volume above a liquid or solid in a closed container. | |
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Relative pressure | Relative pressure is absolute pressure, less atmospheric pressure | |
(this is the customary gauge reading). | ||
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Resistivity | The opposition offered by a body or substance to the passage | |
through it of a steady electric current. | ||
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KB - 18 March 2008 - Revision C
Operator Manual | ORBISPHERE |
