NOMEX
Operating Manual - Measurements with the NOMEX Multimeter
54
D909.131.00/02 en
7.2
Verifying the Settings
Before a Measurement
1. The application selected in the NOMEX soft-
ware is appropriate for the X-ray unit used
(RAD, FLU, DENT, MAM, CT, DENT-PAN).
2. In the NOMEX software, the total filtration
is set to
Auto
or to a filtration value which
corresponds to the filtration of the X-ray unit
(e.g. 3 mm Al).
3. The detector area of the NOMEX multimeter is
located at the center of the irradiated field and
is fully irradiated.
4. The dose rate is within the measuring range of
the NOMEX multimeter.
5. The sensitivity mode set in the NOMEX soft-
ware matches the dose rate to check.
6. The sampling rate set in the NOMEX software
matches the desired storage time.
7. In case of excessive voltage or current, a start
delay has been set at the NOMEX multimeter.
8. The exposure time set on the X-ray unit is suf-
ficient for an accurate measurement.
NOTE
As a matter of course, the measuring time
should be proportionately longer with a higher
ripple and smaller ripple frequency of the tube
voltage waveform. Experience has shown that
optimal results are obtained with measuring
times ≥ 100 ms. If in doubt it is recommended
to verify the measurement results for shorter
measuring times at approx. 100 ms.
NOTE
Please refer to section
for information about the required set-
tings for the intended measurement.
