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
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