General user information
Attention. This section contains essential information that is required for the safe use of
the DAPcheck Plus.
Application
The DAPcheck Plus has been designed for checking the calibration of dose area product
meters and air kerma meters used in patient dosimetry. It can also be used to establish
reference dose area product levels for specific examinations.
Classification
The DAPcheck Plus is not a medical device; it is a laboratory measuring instrument and
should not be used with patients.
The protection afforded by the housing of the DAPcheck Plus corresponds to IP41 (IEC
60529).
The device is not suitable for application in proximity of combustible substances.
Handling, transport, shipping
The ionization chamber and electronic system are highly sensitive components and must
be handled with care.
For transport and return shipment the original or an equivalent packaging must be used.
During transport the following ambient conditions must be maintained.
Temperature 0°C - 50°C
Relative air humidity 10% - 80% (max. 20 g/m3; non-condensing)
Cleaning
When cleaning the ionization chamber no abrasive cleaners and no organic solvents or
cleaning agents containing solvents (e.g. petroleum ether, alcohol) must be used.
The enclosure of the DAPcheck Plus can be cleaned by wiping with a damp cloth
containing a mild washing-up liquid solution.
Storage, conditions of application
Nominal range of application with regard to temperature and relative air humidity can be
found in the Technical specification on page 11.
A relative air humidity exceeding 80% can cause precipitation of condensate on the
ionization chamber and electrical connections. This will lead to increased leakage current.
Where the DAPcheck Plus might have been exposed to excessive humidity, the risk of
such insulation failures can be reduced by drying the ionization chamber at an elevated
temperature (max. 50°C).
A relative air humidity exceeding 80% can cause precipitation of condensate on the
ionization chamber and electrical connections. This will lead to increased leakage current.
In order to eliminate such insulation failures, the ionization chamber may be dried at an
increased temperature (max. 50°C).
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