Humboldt HS-5001EZ, Руководство по эксплуатации продукта

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Fortunately the most common materials in the surface layers are oxygen,
silicon and calcium in the form of oxides or carbonates. If this were not the
case, gamma density gauges would not be practical for use. These materials
all have a u/p between 0.0805 and 0.0809. Large amounts of hydrogen in
surface water do require an adjustment in the measured density.
The equation indicated is not practical for use in a gauge since the mass
attenuation coefficient varies with energy which is changing as the gammas
pass through materials and the detectors used are not linear with energy.
While many equations may be used to fit the data, the most common is:
Where:
CR = Count rate or Ratio at the detectors
D = Density of the material
A,B,C = Constants
DENSITY
Backscatter Gauge Calibration
L
O
G
O
F
C
O
U
N
T
R
A
T
I
O
B Average
A - C
52
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− 𝑪𝑪