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