| Numéro |
La Houille Blanche
Numéro 5, Août 2001
|
|
|---|---|---|
| Page(s) | 75 - 80 | |
| DOI | https://doi.org/10.1051/lhb/2001060 | |
| Publié en ligne | 1 juillet 2009 | |
Analyse statistique des écarts à l'étalonnage des capteurs de niveau piézométriques
Statistical analysis of errors on the calibration of piezometrie depth sensors
1
Centre Technique International de l'Eau, ONDÉO Services, 122 rue Croix-de-Seguey, 33000 Bordeaux
2
Direction de l'Eau et de l'Assainissement, Conseil Général de Seine-Saint-Denis, BP 193, 93003 Bobigny Cedex
Abstract
This paper describes the error of measurement statistic of piezometric depth sensors in sewer network. Annual calibration results of 250 sensors operated for more than 10 years by the Seine-Saint-Denis country are analysed. Deviation between the measurement given by the sensor and the measurement given by a working standard are scattered in an empirical error band 1.5 time larger than the error band provided by the manufacturer. Results show a link between the non conformity rate and the following factors: the sensor age, the kind of sewer in which it is used, the quality of the sewer water, the sensor antecedents.
© Société Hydrotechnique de France, 2001