Français
9. Sensor systems
Placed on the top of a tank or silo, this device comprises a drum, a ribbon and a feeler designed to contact the product during periodic vertical sweeps back and forth, controlled automatically or manually (figure 33 ). When contact is made, the ribbon is released, causing the motor driving the drum to reverse direction and the feeler to move upwards. As with a servo-controlled level gauge, pulses are generated, the number of which depends on the length of ribbon unwound, and enables the dip to be assessed. The periodic information thus collected is processed by a local indicator, or remotely by remote transmission. The fundamental difference with a servo-controlled gauge is precisely the absence of servo-control, which means that this information is not delivered on a continuous basis....
The Ultimate Scientific and Technical Reference
This article is included in
Physical measurements
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Sensor systems
Electrical conductivity or resistivity measurement systems
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
Decision no. 09.00.110.003.1 of October 21, 2009 relating to calibration resources in the field of static and dynamic liquid measurement.
Arrêté du 24 mars 2009 relatif aux jaugeurs. NOR : ECEI0906617A
Decree no. 2002-460 of April 4, 2002 on the general...
Directory
Organizations – Associations – Federations (non-exhaustive list)
Apave: https://www.apave.com
French Nuclear Safety Authority (ASN): https://www.asn.fr
European Committee for Electrotechnical Standardization (CENELEC): https://www.cenelec.eu
Institut national de l'environnement industriel et des risques (INERIS): https://www.ineris.fr...
The Ultimate Scientific and Technical Reference
