XR3D-6 Maintenance & Troubleshooting
EM-XR3D-6-001-EN.D
3-19
©2011 VOTI Inc.
If there is a difference of more than 5%, new matrices must be computed using VOTI
’s
proprietary software.
A certified VOTI technician (or VOTI-trained Administrator) performs a 6-month or 1 year
verification to ensure Z
eff
image colour ratios and an accurate atomic number. To verify the
current calibration using the testing step wedges, proceed as follows:
1. Using a piece of masking tape (or tape that can block light), cover one of the photo sensors
at the entry of the tunnel.
Taping off the sensor ensures the entire step wedge is scanned. However, this also means
the X-ray source is activated as soon as the conveyor START (
) button is pressed.
When starting the scan, the sensor cannot detect the end of the item, so you must press the
conveyor STOP (
) button to stop the conveyor and the X-ray source.
2. Place the steel step wedge lengthwise on the conveyor belt approximately 1 inch away from
the tunnel edge (the side closest to where the Operator stands). This ensures the step
wedge will not rub against the edge of the tunnel during the scan.
3. Press the Start (
) button.
The X-ray source and the conveyor start.
4. Press the Stop (
) button as soon as the image appears on the monitor.
5. Choose the color image mode.
6. Click on the scanned image (or select an area of interest to get an average value). For
example, Aluminum, Steel, and Plexiglas.
The resulting atomic number repeats on other areas with a 95% accuracy.
Summary of Contents for XR3D-6
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