SOURCE ROD POSITIONS
As shown in Figure 3–3, the source rod can be placed in the SAFE,
backscatter, or direct transmission positions. When not taking
measurements, keep the source rod in the SAFE position. When
measuring thin layer or other materials through which you cannot
drill a hole, use the backscatter position. In the direct transmission
positions, the source rod extends into a pre-drilled hole.
NOTE
The source rod should always be in the SAFE position
when the gauge is not in use.
Figure 3–3. Source Rod Positions
(Maximum Depth of 300 mm in Increments of 50 mm)
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