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11. Glossary
Accuracy
The closeness of agreement between a measured value and a true value of a measurand. Measurement accuracy is not a quantity and cannot be expressed numerically. A measurement is sometimes said to be more accurate if it provides a smaller measurement error.
Weight by volume; Unit Weight
Specific weight is the weight per unit volume of a material. The symbol for specific weight is ? (the Greek letter gamma). The specific weight of water at the Earth's surface at 5°C is 9,807 N/m 3 . The relationship between specific weight and density is the same as that between weight and mass.
Angle de talus; Angle of Repose
The natural angle of slope is the angle made by the slope of the heap under which the material being dumped...
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Glossary
Bibliography
Websites
Online course on level measurement using radar technology :
https://academy-online.krohne.com/elearning/fr/cours/mesure-de-niveau-radar/
Engineer's Garage: level sensors :
...Standards and norms
- Radiation protection – Sealed radioactive sources – General requirements and classification - ISO 2919 - 2012
- Tanks for transporting hazardous materials – Tank service equipment – Fill limiters for liquid petroleum fuels - NF EN 13922 - 2011
The catalog of Iso and Afnor standards can be consulted online on the Afnor website: http://www.afnor.fr
...Regulations
Arrêté du 8 juillet 2003 relatif au contrôle métrologique des récipients-mesures. NOR: INDI0301736A
Decree no. 2002-460 of April 4, 2002 on the general protection of individuals against the dangers of ionizing radiation.
Decree no. 98-1186 of December 24, 1998 amending decree no. 86-1103 of October 2, 1986, as amended, on the protection of workers against the dangers of ionizing...
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Table 1 lists the main manufacturers, classified by measuring system.
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