Model 3430 Plus & 3440 Plus
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.
WARNING
The source rod should always be in the SAFE
position when the gauge is not in use.
BS
2"
50mm
3"
75mm
4"
100mm
5"
125mm
6"
150mm
7"
175mm
8"
200mm
9"
225mm
10"
250mm
11"
275mm
12"
300mm
Figure 3–3. Source Rod Positions
(Maximum Depth of 300 mm in Increments of 50 mm)
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