EPD/HB/40521/000
ELECTRONIC PERSONAL DOSEMETER HANDBOOK
GLOSSARY
ISSUE 5
Page (viii)
Thermo
Glossary (continued)
PTB The Physikalisch-Technische Bundesanstalt, Braunschweig
and Berlin. The national institute of natural and engineering
sciences and the highest technical authority for metrology and
physical safety engineering of the Federal Republic of
Germany.
SDE Shallow Dose Equivalent (alternative nomenclature for H
p
(0.07))
ppm Parts per million
RAM Random Access Memory
rem A unit of dose equivalent, equal to 10mSv
RFI Radio Frequency Interference
Short-press A short press and release of the button
Sv Sievert, SI unit of dose equivalent
T Tesla
TLD Thermoluminescent Dosemeter
Total Dose Intended to be a secure record of the total accumulated dose
received since Dosemeter issue - alarms do not apply to total dose.
User ID A numeric code of up to 12 digits that may be written to the EPD to
define the current user or wearer. By convention a value of
FFFFFFFFFFFF is written to EPDs not currently issued to a wearer.
User Name A character string of up to 22 characters that may be written to the
EPD and used as a second or supplementary Wearer Identity
( Supplementary to user ID ).
Wearer ID Alternative terminology for the User ID.
Wearer Name Alternative terminology for the User Name.
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