IPC Definitions - January 01, 2012

G01N 9/00 - Definition fr

Definition statement

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.

Informative references

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

Checking density of materials to be filled

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

Glossary of terms

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)