Troxler 4640-B Nuclear Density Gauge 4640-B THIN LAYER DENSITY GAUGE
For Compaction Control of Thin Lift Asphalt and Concrete Overlays.
Recognizing the need for an improved method of measuring the density of thin layer asphalt overlays, Troxler, the world leader in nuclear gauge technology, developed the first true thin layer density gauge, the Troxler Model 4640-B.
The only gauge designed to measure the density of thin asphalt and concrete layers from 1 to 4 inches (2.5 to 10 cm), the Troxler Model 4640-B Thin Layer Density Gauge accurately measures the overlay density without influence from underlying material.
No nomographs or manual corrections are required in order to compute the true density of the overlay.
With on-site results available in as little as one minute, the Model 4640-B can provide the user with test results when they are needed, not hours after compaction has been completed.
Extensively field tested and proven, the 4640-B is now being used by many governmental agencies and contractors as the only approved test method for density measurements on bituminous overlays.
Advantages of the MODEL 4640-B
FAST/ACCURATE RESULTS : In as little as one minute, the 4640-B displays densities in pcf, kg/m3 or g/cm3 and in percent Marshall, percent voids, or percent of maximum density (voidless).
Accuracies within 1.5 percent of core results have consistently been achieved.
ELIMINATES NEED FOR NOMOGRAPHS AND MANUAL CORRECTIONS : Variations in the density or composition of the base material do no affect the test results. No field calculations or charts are needed to determine density.
OPERATOR SELECTED DEPTH OF MEASUREMENT : Enter the thickness of the overlay into the gauge memory and then accurately measure the overlay density (compaction) without influence from the underlying material.
USER FRIENDLY : The operator will find the 4640-B very easy to use. It was designed as a user friendly gauge with prompts to guide the operator through the test procedure.
DATA STORAGE - COMPUTER COMPATIBLE : Store up to 750 readings by location and project number. Transfer stored readings to a printer or computer via RS232 interface. Additional site information can also be stored with each test.
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