TABLE OF CONTENTS
CHAPTER 1. INTRODUCTION TO THE MODEL 3450
Introduction................................................................................... 1–2
Gauge Parts and Accessories........................................................ 1–4
Unpacking and Inspection ............................................................ 1–6
CHAPTER 2. THEORY OF OPERATION
Density.......................................................................................... 2–2
Moisture........................................................................................ 2–3
Thin Layer .................................................................................... 2–5
Calibration .................................................................................... 2–6
CHAPTER 3. GETTING STARTED
Model 3450 Illustration ................................................................ 3–2
Keypad.......................................................................................... 3–3
Source Rod Positions.................................................................... 3–5
Daily Inspection............................................................................ 3–6
Turning the Gauge On .................................................................. 3–7
Setup............................................................................................. 3–9
CHAPTER 4. USING THE GAUGE
Taking a Standard Count.............................................................. 4–2
Preparing a Test Site..................................................................... 4–6
Taking Measurements................................................................... 4–9
CHAPTER 5. PROJECT DATA
Separating the Control Unit.......................................................... 5–2
Handling Project Data................................................................... 5–5
Storing Data................................................................................ 5–10
CHAPTER 6. ADJUSTING MEASUREMENTS
Calibration Offset ......................................................................... 6–2
Special Calibration...................................................................... 6–11
APPENDIX A. RADIATION THEORY AND SAFETY
Radiation Theory ......................................................................... A–2
Radiation Safety........................................................................... A–5
Regulatory Requirements .......................................................... A–15
Gauge Use Precautions.............................................................. A–18
3450 Radiation Profile............................................................... A–19
