4TABLE OF CONTENTSCHAPTER 1- INTRODUCTION1.1 Preliminary Examination ................................................................................. 71.2 Model Identification ....................................................................................... 71.3 General Description ....................................................................................... 81.4 Power Supply ............................................................................................... 101.4.1 Battery Installation .................................................................................. 101.4.2 Charging Batteries .................................................................................. 101.5 Probe Description and Installation .................................................................. 111.5.1 Sensor Description .................................................................................. 111.5.2 Specifications of Sensors .......................................................................... 121.5.3 DO Sensor Activation .............................................................................. 131.5.4 Installation ............................................................................................. 131.6 Specifications ............................................................................................... 141.7 Power Consumption ...................................................................................... 171.8 Display and Keyboard Description .................................................................. 181.9 Help Function .............................................................................................. 19CHAPTER 2 - MEASUREMENT MODE ............................................................. 20CHAPTER 3 - SETUP MODE3.1 Measurement Setup ...................................................................................... 213.2 System Setup ................................................................................................ 233.3 Table of Measurement and System Setup Items .................................................. 27CHAPTER 4 - CALIBRATION MODE4.1 Quick Calibration ........................................................................................ 294.2 pH Calibration ............................................................................................. 314.2.1 Preparation ........................................................................................... 314.2.2 Procedure .............................................................................................. 314.2.3 Error List ................................................................................................ 334.3 Dissolved Oxygen Calibration ........................................................................ 344.4 Conductivity Calibration ................................................................................ 35