Fluke Biomedical 8000 Victoreen - Manual (Page 14)

Victoreen 8000
Operators Manual
2-2
NOTE
The dashed gray rectangle is the minimum
collimated beam size required for accurate kVp
measurements only. This rectangle outlines the
NERO mAx’s kV detectors. Exposure and rate
results from an x-ray beam collimated to this area
will be incorrect because the beam is not
illuminating all of the internal ion chamber.
The black square and the dashed black crosshairs are alignment marks to aid in positioning the NERO
mAx detector in the x-ray beam.
The red arrows on the detector indicate the axis of the detector that should be aligned with the x-ray tube
axis for the most accurate measurements. This minimizes any heel effect.
Radiographic
Install the W/Al filter slide in the detector and set the filter slide to the desired kVp range. Position the
detector under the x-ray tube with the top of the detector facing up. Align the detector along the axis of
the x-ray tube to minimize heel effect. Set x-ray tube SDD (normally 26 inches) and collimate the beam
size to the round or square alignment marks on the top of the detector. Align the x-ray beam by making
the light field crosshairs coincident with the crosshairs on the top of the detector.
Dental
Set the detector on a flat, stable surface and position the x-ray tube so that the cone is just above the
detector's top surface.