Fluke Biomedical TNT 12000 - Manual (Page 51)

Operation
How to Use the Dosimeter Detector (TNT 12000 DoseMate)
2
2-23
4. Put the ion chamber bracket on the horizontal rod. Move it along the rod until the top
of the bracket aligns with the scribe mark in the middle of the rod. Tighten the
chamber bracket thumbscrew.
5. Put the HVL filter tray on the horizontal rod. Move it along the rod until the top of
the tray aligns with the top scribe mark on the rod. Tighten the HVL filter
thumbscrew.
6. Attach the ion chamber to the bracket.
7. Attach the triaxial cable to the chamber.
8. Use the cable clips to attach the cable down the rod..
W Caution
To prevent damage to the test equipment, attach the cable near
the bottom of the test stand. Make sure that the cable is not in
the X-ray beam between the tube and the ion chamber.
How to Place the Ion Chamber in Limited Access Situations
Use the plastic cable stem to accurately put the ion chamber in image-intensifier housings
or other hard to access situations. The plastic cable stem attaches to the triaxial-cable
connector nearest the ion chamber. This adds five inches of position control.
Triax Cable
Triax Cable Connector
96020C Ion Chamber
Cable Stem
Rod
fct27.eps
Figure 2-12. Ion Chamber Cable Stem
If more distance is necessary, attach the cable stem to the threaded end of the vertical rod,
as Figure 2-12 shows. This adds 15 inches of rigid control.