The thermoluminescent dosimeter reader uses a specially designed reader that heats the dosimeter at a controlled rate. The light emitted by the dosimeter during the heating cycle is measured, usually through a photomultiplier tube detector, and related through appropriate calibration to a particular dose.

What are the cons of thermoluminescent dosimeter use?

One of the downsides that come with using a TLD dosimeter is that it can only be read one time. A TLD dosimeter reading can be used multiple times; however, they cannot be read more than once, after the TLD dosimeter has been used. This occurs because TLD is “zeroed” at the end of the readout process.

How often should dosimeters be read?

(c) Pocket dosimeters, or electronic personal dosimeters, must be checked at periods not to exceed 12 months for correct response to radiation, and records must be maintained in accordance with § 34.83. Acceptable dosimeters must read within plus or minus 20 percent of the true radiation exposure.