Calibration Process; Precautions Before You Begin; Nuclear Gauge - InstroTek ValiDator Operating Manual

side alignment stops. Two 4 min. readings at depth 12 should be
averaged for better precision.
E. Complete a four (4) minute reading and record the gauge results
WD, M, DC and MC on the ValiDator Evaluation Form (page 10).
Make additional blank copies of this form for future use.
F. The Wet Density (WD) and Moisture (M) readings from the gauge
should fall between the range indicated on the gauge specific
ValiDator Calibration Data Table.
G. If the resulting densities indicate the gauge passes, consider the
verification process complete. The gauge is now verified for field
use.
H. If the gauge fails Validation, review precautions and repeat
Validation steps A-G.
I. A second failure would indicate that a calibration is needed.
II.

Calibration Process

Note: Gauge Calibration is a sophisticated process and should only be
attempted by advanced and trained users.
Section of the Manual for calibrating gauges.

Precautions before You Begin

Nuclear gauge:

Note: Do not take a Standard Count on the ValiDator.
 Clean Base
 Record the Current passing standard count in the field location where
Validation is to be performed.
 Count time set to four (4) minute counts
 Stable Gauge Electronics (Run the manufacturer recommended diagnostics
if field results are questionable.)
 No other gauges should be within 30ft (10 meters) of the testing area.
 When taking measurements stand opposite the source side of the unit a
distance of three feet (1 meter) away.
 Gauge positioned correctly on the ValiDator. (Refer to Gauge Placement
page 8)
 Gauges meet the requirements for supported gauges. (Refer to User Guide
page 4)
Please refer to the Calibration
7
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