Fluke Biomedical 10100AT User Manual

Page 37

Operation

Using the Ion Chamber Test Stand and Accessories

2-19

8. During HVL testing, the HVL filters can be positioned on the test stand filter tray.

The kVp and exposure time measurement value
may be affected by the presence of HVL filtering in
the x-ray beam. Be sure to remove the HVL filters
from the “filter tray” when making these
measurements.

2.9.2 Using the Test Stand for Under-Table Tubes

For under-table tubes, follow the assembly steps below and refer to Figure 2-5.

1. Remove the test stand from the case, slide the HVL filter tray up the test stand rod and position it

just below the rod's upper scribe mark. The scribe mark should align with the topside of the filter
tray. Tighten thumbscrew.

2. Slide the ion chamber holder up the test stand rod and position it just below the rod's center scribe

mark. The scribe mark should align with the topside of the ion chamber holder. Tighten
thumbscrew.

3. If not already in place, position the kVp divider on the test stand baseplate with filter pack facing

upward. Make sure the square rod is placed in the center hole on the holder as shown in Figure
2.4. The kVp divider’s rubber feet must be inserted fully into the half circle cutouts in the baseplate
for proper alignment.

4. Loosen thumbscrew that is securing the base plate to the test stand rod. Grasp firmly the kVp

divider's holder and kVp divider and lift the assembly away from the base plate. Now, the assembly
can be turned upside down and re-attached to the baseplate. Tighten thumbscrew.

5. Place the Model 96035B ion chamber in its holder and attach triaxial cable. Route the cable down

the rod and use the cable clip to secure cable to the test stand rod near the baseplate.

Failure to secure the cable near the base of the test
stand may result in tipping the test stand and
damage to the equipment.

6. Place the test stand in an upright position and center it in x-ray beam.

7. Attach the interface cable to the kVp divider. Route the cable up and over the top of the kVp

Divider and secure it to the rod near the test stand baseplate using the attached cable clip.

Failure to secure the cable near the base of the test
stand may result in tipping the test stand and
damage to the equipment.

NOTE

CAUTION