Troxler 3430 Plus - Chapter 2 Theory of Operation; Density; Moisture; Calibration

Model 3430 Plus & 3440 Plus
2–1
CHAPTER 2
THEORY OF OPERATION
This chapter provides a brief description of the theory of operation
of the Troxler Model 3430 Plus and 3440 Plus Surface Moisture-
Density Gauges. The direct transmission and backscatter modes of
operation are illustrated, along with an explanation of the
cesium-137 source, americium-241:beryllium source, and detector
geometry.
CONTENTS
Density .......................................................................................... 2–2
Moisture ........................................................................................ 2–3
Calibration .................................................................................... 2–5
Offsets .................................................................................... 2–5
2. THEORY OF OPERATION