Hach EC1000 Instruction Manual page 6

TABLE OF CONTENTS,
SECTION 3 SERIAL INTERFACE .......................................................................................................................45
3.1 Optional Serial Interface Board ..............................................................................................................................45
3.2 Data Communications Format/Setup ......................................................................................................................45
3.3 Print Format ............................................................................................................................................................45
3.4 Remote Input Commands .......................................................................................................................................46
SECTION 4 PID CONTROL ..................................................................................................................................49
4.1 pH Controller Basics ...............................................................................................................................................49
4.2 Instrument Settings .................................................................................................................................................49
4.2.1 Set Point ......................................................................................................................................................49
4.2.2 Dead Band ...................................................................................................................................................49
4.2.3 Preset ...........................................................................................................................................................49
4.3 Gain .........................................................................................................................................................................49
4.3.1 Reset (Integral) ............................................................................................................................................52
4.3.2 Rate (Derivative) .........................................................................................................................................52
4.3.3 Curve ...........................................................................................................................................................52
INSTALLATION/MAINTENANCE
SECTION 5 INSTALLATION ...............................................................................................................................57
5.1 Unpacking the Instrument .......................................................................................................................................57
5.2 Industrial Process pH Electrode Preparation ..........................................................................................................57
5.3 Mounting the Controller .........................................................................................................................................57
5.3.1 Panel Mounting ...........................................................................................................................................57
5.3.2 Wall Mounting ............................................................................................................................................59
5.3.3 Pole Mounting .............................................................................................................................................59
5.4 Mounting the Pump .................................................................................................................................................59
5.5 Installing the pH/ORP Electrode ............................................................................................................................60
5.5.1 In-Line Electrode Installation .....................................................................................................................62
5.5.2 Submersible Sensor Installation ..................................................................................................................62
5.5.3 Flow-Thru Cell Installation .........................................................................................................................62
5.6 Wiring the Meter .....................................................................................................................................................63
5.6.1 Wire Preparation .........................................................................................................................................64
5.6.2 Power ...........................................................................................................................................................65
5.6.2.1 Line Voltage Selection for Meter .................................................................................................66
5.6.3 Alarms .........................................................................................................................................................66
5.6.4 Recorder and Controller ..............................................................................................................................66
5.6.5 Electrode Wiring .........................................................................................................................................67
5.6.6 Electrode Output Connections ....................................................................................................................67
5.7 Pump Wiring ...........................................................................................................................................................68
5.7.1 Line Voltage Selection for Electrolyte Pump .............................................................................................69
SECTION 6 BASIC START-UP ..............................................................................................................................71
6.1 Introduction .............................................................................................................................................................71
6.2.1 Assembling the Electrolyte Line .................................................................................................................71
6.2.2 Connection to the Pump Module .................................................................................................................71
6.2.3 Connection to the pH Electrode ..................................................................................................................71
6.3 Purging the System .................................................................................................................................................72
6.4 Calibration ...............................................................................................................................................................73
SECTION 7 SERIAL INTERFACE .......................................................................................................................75
7.1 Installation ...............................................................................................................................................................75
7.2 RS-232C Interface Configuration ...........................................................................................................................77
7.3 Current Loop Configuration ...................................................................................................................................77
continued
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