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8 QUALITY ASSURANCE SYSTEM
Switching on the AlphaGUARD also activates its internal quality assurance system.
E.
g. the microprocessor automatically performs a series of control routines and
plausibility checks in an always repeating mode. Reporting of QA results is done
the way that the values are filed simultaneously with the measured radon values
and environmental parameters in the storage of the instrument.
When reading out the measurement series the report of the quality assurance
system is also handed over to the PC. Via “DataVIEW” or “DataEXPERT”
this
protocol can be analyzed. This enables the user to analyze the status of his
AlphaGUARD during the last measuring cycle in a time resolved way. A difference
between conspicuous measuring values and physically caused artifacts can
definitely be drawn when the radon monitor had to be operated under extreme
circumstances (e.g. at potentially existing danger of condensation).
The quality assurance protocol is divided in two parts:
x
hardware condition
x DATAQA data quality
Two protocol parts exist independently of each other in the value storage of the
AlphaGUARD. The two following tables characterize the quality parameters:
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