EPD/HB/40521/
000
ELECTRONIC PERSONAL DOSEMETER HANDBOOK
FAULTS AND RECOVERY ACTIONS
ISSUE 5
Page 66
Thermo
Note
: The date/time data field wraps round after 194 days of operation. After this
time previous event-associated day/date(s) cannot be considered as
accurate. In addition elapsed time during loss of power is not recorded.
5.3.3 Dose Quality Factors
A number of faults and events are counted and recorded in association
with the measured dose. They are zeroed when the dose is zeroed and
are subsequently read with the dose. These are referred to as the dose
quality factors and are described in section 4.6.7. Non-zero dose quality
factors imply that there may be an error in the dose reading due to the way
the product has been used, rather than due to a fault within the unit. For
example, the battery cap may have been used or a passivated battery
fitted, causing a reset and potentially lost dose.
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