Manual Collimator; Dose Area Product Meter (Dap) - AGFA DR 400 User Manual

Manual Collimator

The Collimator can rotate ± 90° on its vertical axis while the X-ray tube
remains in the same position. This movement is performed by manually
turning the collimator and has detents every 90°.
1
2
3
4
5
Filter indicator.
1.
Filter selection wheel.
2.
Knobs to adjust the internal blades.
3.
The table on the front panel shows the number to set with the knobs for
each combination of SID and image size.
Button to switch on the light field indicating the collimated area and the
4.
laser light indicating the center position.
After pressing the button, they remain lit for a few seconds before
automatically switching off.
Measurement tape to measure the distance between the focal spot of X-ray
5.
tube and the tabletop.
The measurement tape is at the rear side of the collimator.
Figure 55: Ralco 221 collimator controls
Another button to switch on the light field is available on the radiographic
wall stand.
Related Links
Radiographic wall stand

Dose Area Product Meter (DAP)

An optional radiation meter can be installed under the manual collimator and
reads the radiation as Dose Area Product in [cGy x cm
The measured radiation value is transferred to the X-ray generator console
and the Software Console automatically and displayed after each exposure.
No value is displayed if the measured radiation value is below the minimum
readout value of the DAP meter.
The DAP meter can be removed from the rail system to be cleaned or serviced.
To remove the radiation meter:
DR 400 | Radiographic Table and X-Ray Tube Stand | 147
on page 155
2
].
3231E EN 20210708 1530