This document is a manual of operation and instruction for the Model 3440 Surface Moisture-Density Gauge produced by Troxler Electronic Laboratories, Inc. The product is an instrument used for measuring surface moisture density, and it is known for its high accuracy and reliability.
This document serves as a Quick Reference Card for the Troxler 3440 Surface Moisture-Density Gauge. It provides step-by-step instructions for adjusting wet density and moisture offsets, performing tests on soil, base courses, and asphalt surfaces, and utilizing the storage function for project data.
Safety glasses must be worn while smoothing the test surface with a scraper plate and hammering the drill rod.
The reference standard block must have a density of at least 100 pcf (1600 kg/m³).
The test location must be at least 10 m (33 ft) from any other nuclear gauge or radioactive source.