IPC Definitions - January 01, 2012
G01N 9/00 - Definition
This main group covers:
Measurement of density or specific gravity (see Glossary) by direct methods, like:
Determination of density or specific gravity from a related property of the material, e.g. by observing the transmission of wave or particle radiation through the material.
Deducing other properties of the material from its density.
Determining the apparent density of granular solid materials.
Instruments for investigatingdensity.
Attention is drawn to the following places, which may be of interest for search:
Sampling; preparing specimens for investigation | G01N 1/00 |
Automatic analysis; handling materials therefor | G01N 35/00 |
B65B 1/42 | |
Indirect mass flowmeters, e.g. measuring volume flow and density | G01F 1/86 |
Measuring volume | G01F 17/00, G01F 19/00, G01F 22/00 |
Weighing | G01G |
Measuring temperature by using measurements of density | G01K 11/28 |
Ratio control by sensing density of mixture | G05D 11/06 |
In this main group, the following terms or expressions are used with the meaning indicated:
Density | means mass per unit volume |
Specific gravity | is the density of a substance divided by the density of water (since the latter is 1 gr/cm3, specific gravity is the same number as density but without any units) |