TLD BADGE READER

TLD READER SYSTEM Type TL109-D developed and manufactured by NUCLEONIX systems is a personal dosimeter reader system designed to read the dose recorded by the wearer of the TL Dosimeter along with personnel ID punched code on the badge automatically during readout cycle.
The TL dosimeter which records the integrated dose received is to be worn by the personnel who are to be monitored for their radiation exposure, which can be estimated on the basis of the TL Dosimeter readings. TLD dosimeter works on the property of certain materials which absorb energy when exposed to X, a or ß rays. On heating, the absorbed energy is released in the form of visible light which is proportional to the absorbed energy.
TLD Badge: It comprises of a plastic badge and thick aluminium card on which three circular holes are punched and teflon embedded TL discs (CaSo4 : Dy) are chipped into the corresponding holes. A symmetric ‘V’ cut provided in the card permit the card to be loaded in the plastic badge only in one way and ensure proper positioning of the badge in the magazine. The TLD card is provided with three rows of punched holes for the purpose of badge identification. The holes punched in a specified sequence to provide unique ID to each of the personnel. This ID is read out by the TLD Reader at the time of measurement.