INTRODUCTION
The Troxler Model 3440 Surface Moisture-Density Gauge measures the
moisture content, density, and compaction of soils, soil-stone aggregates,
concrete, asphalt treated bases, asphalt surfacing, and other materials that
approximate similar ranges of density and/or moisture content. Currently
recognized as the industry standard for compacting control
instrumentation, the Model 3440 complies with the following American
Society of Testing and Materials (ASTM) Standards:
♦ ASTM D-2922: Standard Test Methods for Density of Soil and Soil-
Aggregate in Place by Nuclear Methods (Shallow Depth)
♦ ASTM D-2950: Standard Test Method for Density of Bituminous
Concrete in Place by Nuclear Method
♦ ASTM D-3017: Standard Test Method for Water Content of Soil and
Rock in Place by Nuclear Methods (Shallow Depth)
The latest engineering, design, and manufacturing techniques have been
incorporated, as well as over thirty years of experience in the nuclear gauge
industry. The result of this effort is the ultimate in surface moisture-density
gauges – the Troxler Model 3440 Surface Moisture-Density Gauge.
The versatile 3440 gauge uses two modes of operation (backscatter and
direct transmission) and can store over 450 readings. The gauge also
provides over 30 special functions and operator-selectable precision for all
phases of construction material testing. The LCD display and easy-to-use
keypad ensure the operator of fast, accurate test measurement results.
This manual contains sections that cover basic gauge setup and operation,
as well as advanced operating techniques. The appendices provide
information on radiation theory and radiation safety. Each chapter contains
a table of contents for quickly locating the function required. If a question
arises about the gauge, gauge operation, or an application not covered by
this manual, please contact the closest Troxler Sales/Service Center or your
Troxler Representative.
Changes and additions may be made to the 3440 gauge and this manual
without notice. Acquire updated information or a newer version of this
manual by contacting the Troxler Sales Department or a Troxler
Representative. The current edition of the manual can also be downloaded
and/or viewed (using Adobe→ Acrobat→ Reader) from the Troxler
website, www.troxlerlabs.com.
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