Introduction
Troxler recommends referencing the gauge each day that the
gauge is in use and periodically while taking measurements.
The reference reading consists of placing the gauge on the
reference standard contained in the gauge carrying case and
pressing the
〈Ref〉 key.
The density read by the gauge is then compared to the known
density of the reference standard. The result of this
comparison is used to automatically adjust gauge
measurements.
For increased accuracy, measurements can be adjusted using
density offset and mix calibration values described in the
following sections.
To determine the density offset, take a gauge reading and
compare the measured value to an alternative density value,
as measured by another method (such as using a nuclear
gauge or extraction and analysis of a road core).
For a given material, the slope and intercept values can also
be determined using the Mix Calibration function (see page
3–6).
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