Table Of Contents - ABB 7651 Instruction Manual

CONTENTS
Section
1 INTRODUCTION .................................................. 2
1.1 Schematic Diagrams ........................................ 2
2.1 Checking the Code Number ............................. 3
2 PREPARATION .................................................... 3
2.2 Identifying the Electrode Type .......................... 4
2.3 Checking the Cable Specification .................... 6
2.4 Cleaning Options .............................................. 6
3.1 Siting ................................................................ 6
3.1.1 Operating Limits ................................. 6
3 MECHANICAL INSTALLATION ........................... 6
3.1.2 Operating Pressure & Temperature ... 7
3.2 Installing the System ........................................ 7
3.2.1 Models 7651, 7652, 7660 and 7661 .. 7
3.2.2 Model 7652 ........................................ 8
3.2.3 Models 7654, 7655, 7656, 7664 and
7665 ................................................... 8
3.3 Fitting Electrodes ............................................. 8
3.3.1 Removing the Sensor Holder ............. 8
3.3.2 Fitting the Reference Electrode ....... 10
3.3.3 Fitting the Measuring Electrode,
and the Temperature Compensator
1750-000 (if required) ...................... 10
3.3.4 Completion Tasks ............................ 11
3.4 Fitting the Reservoir - Models 7651, 7652,
7660 and 7661 ............................................ 12
4.1 Connection to AX, 4500 and 4600 Series
Transmitters - Fig. 4.1 and Table 4.1 .......... 13
4.2 Connection to Hazardous Area Systems ....... 13
Page Section
4 ELECTRICAL INSTALLATION .......................... 13
4.3 Cable Termination .......................................... 14
5 CALIBRATING THE SYSTEM ........................... 15
5.1 General Calibration of electrodes .................. 15
5.2 Calibration of electrodes used in high purity
water applications. ....................................... 15
5.2.1 Monthly Calibration .......................... 15
5.2.2 3 Monthly Calibration ....................... 15
6.1 'O' Ring Seals ................................................. 16
6.2 Cleaning ......................................................... 16
6 ROUTINE MAINTENANCE ................................ 16
6.3 Checking the Electrolyte Level ....................... 16
6.4 Replacing Electrodes ..................................... 16
6.4.1 Measuring Electrodes ...................... 16
6.4.2 Reference Electrodes .................................. 17
6.5 Recommended Maintenance of the
Company's pH Systems .............................. 17
6.6 Fault Finding .................................................. 17
6.7 Loss of Sample .............................................. 18
7.1 Models 7651, 7652 ......................................... 18
7.2 Models 7654, 7655, 7656 ............................... 18
7.3 Model 7660 (stainless steel) .......................... 18
7.4 Reservoir Spares ........................................... 18
7 SPARES ............................................................. 18
NOTES ..................................................................... 19
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