Troxler 3430 - Chapter 2: Theory of Operation

Model 3430
2-1
CHAPTER 2
THEORY OF OPERATION
This chapter contains a brief description of the theory of operation
of the Model 3430 Surface Moisture-Density Gauge. The direct
transmission and backscatter modes of operation are illustrated
along with a brief explanation of the cesium-137 source, americium-
241:beryllium or californium-252 source, and detector geometry.
CONTENTS
Density ........................................................................................... 2-2
Moisture ......................................................................................... 2-5
OPERATION THEORY