Site Preparation and Gauge Placement
Select a flat, level and dry surface with a density greater than 100 lb/ft3
(1602 Kg/m3) three (3) feet from any vertical structure. Note: Soil, asphalt or
concrete are good examples of the surface to place the ValiDator for
testing. Parking lots or open fields are recommended locations for testing.
Remove ValiDator from shipping case, place unit on selected area, and
position handle at bottom stop.
Take a Daily or Calibration Standard Count and record on ValiDator
Evaluation Form. Do not take the Standard Count on the ValiDator.
Align the density gauge on the top of the ValiDator using the specific guides
on top of the ValiDator device. (See Gauge Placement page 8) Backscatter
readings should be measured in contact with alignment stop. After lowering
the source rod for direct transmission, position the gauge to the rear of the
ValiDator device against side stops to reduce the air void between the
source and material being read.
Select the specific ValiDator Density data table for the model nuclear gauge
under test.
NOTE: Do not take standard counts on top of the ValiDator.
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