Model 3440-L A–1
. THEORY OF OPERATION
APPENDIX A
THEORY OF OPERATION
This appendix contains brief explanations of the principle of operation of
the 3440-L gauge. Backscatter mode and direct transmission mode are
explained, as well as the theoretical differences between the density and
moisture measurement technique.
CONTENTS
Density....................................................................................................A–2
Moisture..................................................................................................A–5