DIAMENTOR E2
Performing a Measurement
D651.131.00/05 en
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5 Performing a Measurement
5.1 Constancy Check
CAUTION
Faulty measurement -
Check the device per-
formance every day, before putting the
DIAMENTOR E2 into operation.
Before using the DIAMENTOR E2, check that
its measurement range matches the examina-
tion technique that will be applied.
Reset the DIAMENTOR E2 before each exami-
nation.
The DIAMENTOR E2 will conduct an internal con-
stancy check as soon as the TEST button is
pressed for 2 seconds. The return value of the
hardware test is the proportional relation between
measured value and an internal test value. After
about 5 seconds the DIAMENTOR E2 returns auto-
matically to the measuring mode.
If the proportional relation between measured value
and test value is not within the range of 95 ... 105
the device needs to be calibrated before it can be
used again.
5.2 Measurement
NOTE
Allow for a pause of at least 10 seconds be-
tween the activation of the device and the first
measurement (section 10).
Press the RESET button before starting the first
measurement to bring the DIAMENTOR E2 into
a defined initial state.
After the device has been turned on, the firmware
version has been displayed for about 2 seconds
and the display test has been completed success-
fully measured values are displayed according to
the selected mode as soon as radiation is detected.
„Auto“ measuring mode (Setup: Auto)
During irradiation display of the detected dose area
product rate in µGym²/s; after irradiation display of
the total dose area product in µGym².
„Dose rate“ measuring mode (Setup: doSEr)
Display of the dose area rate in µGym²/s. This
mode is indicated by a square at the left margin of
the display.
„Dose“ measuring mode (Setup: doSE)
Display of the total dose area product in µGym². In
this mode the display will be refreshed every sec-
ond.
CAUTION
Faulty measurement -
Accessories placed be-
tween the chamber and the patient, such as a
pediatric filter or beam applicator, will reduce
the dose area product relevant for the patient.
In this situation the DIAMENTOR E2 will display
measuring values that are too high. According
to national regulations in Germany, however, it
is sufficient to record the measuring value and
the accessories in use for reconstruction of the
radiation exposure level. If these accessories
are used for all measurements, the
DIAMENTOR E2 should be recalibrated with
the accessories installed.
Equipment damage -
The DIAMENTOR E2
should be operated only when an ionization
chamber is connected or when the chamber
connection at the device is covered.
