Table of Contents
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CONTENTS
1
TURBIDITY MEASUREMENT SYSTEMS .................... 2
1.1
Introduction ........................................................ 2
1.2
Turbidity Measurement Systems ........................ 3
2
MECHANICAL INSTALLATION .................................... 5
2.1
Siting Requirements ........................................... 5
2.1.1
Analyzer ................................................ 5
2.1.2
and 7997 300 only) ............................... 5
2.2
Mounting the Transmitter Unit ............................ 6
2.2.1
Wall-mounted Instrument ..................... 6
2.2.2
Panel-mounted Instrument ................... 7
2.3
Installing the Turbidity Sensor Unit ...................... 8
2.3.1
7997 201 and 7997 202 ....................... 9
2.3.2
7997 200 Series and 7997 300 ............ 9
2.3.3
7997 400 Series ................................... 9
2.3.4
7997 450 Series ................................... 9
2.3.5
Flow Unit Dimensions ........................... 9
2.3.6
Mounting the Sensor ............................ 9
2.3.7
Mounting the De-bubbler .................... 11
2.3.8
Optional De-bubbler ........................... 11
3
ELECTRICAL CONNECTIONS ................................ 12
3.1
Access to Terminals ......................................... 12
3.1.1
Wall-mounted Instrument ................... 12
3.1.2
Panel-mounted Instrument ................. 12
3.2
Connections, General ....................................... 13
3.2.1
Interference Suppression .................... 13
3.3
Wall-mounted Instrument Connections ............ 14
3.4
Panel-Mounted Instrument Connections .......... 15
3.5
Selecting the Mains Voltage ............................. 16
3.5.1
Wall-mounted Instrument ................... 16
3.5.2
Panel-mounted Instrument ................. 16
3.6
Turbidity Unit Connection Box .......................... 17
3.7
Connections for 7997 450 Series ..................... 17
4
CONTROLS AND DISPLAYS ..................................... 18
4.1
Displays ............................................................ 18
4.2
Control Familiarization ...................................... 18
5
START UP AND OPERATION .................................... 19
5.1
Instrument Start-up .......................................... 19
5.2
Operation - Turbidity Measurement Mode ........ 19
5.2.1
Operating Page .................................. 19
5.2.2
Calibration Page ................................. 20
6
6.1
Access to Secure Parameters .......................... 23
6.2
Language Page ................................................ 23
6.3
Set Up Parameter Page ................................... 23
6.4
Set Up Outputs Page ....................................... 25
6.5
Electrical Calibration ......................................... 27
6.5.1
Equipment Required ........................... 27
6.6
Preparation ....................................................... 27
6.7
Electrical Calibration Page ................................ 28
7
MAINTENANCE .......................................................... 29
7.1
Scheduled Maintenance ................................... 29
7.1.1
Sensor Cleaning ................................. 29
7.1.2
Calibration .......................................... 29
7.1.3
Using Dry Calibration Standards ......... 29
7.2
Calibration Checks ........................................... 30
7.2.1
Procedure ........................................... 30
7.3
Using Formazine Standard Solution ................. 32
7.3.1
for Wet Calibration .............................. 32
7.4
Unscheduled Maintenance ............................... 33
7.4.1
Transmitter Diagnostic messages ....... 33
7.4.2
Unstable or Erratic Readings .............. 33
7.4.3
in Turbidity Readings .......................... 34
7.4.4
of Dry Calibration Standards ............... 34
7.4.5
400 Series Sensors ............................ 34
7.4.6
(with Integral Cleaning) ........................ 34
8
SPECIFICATION ......................................................... 35
9
SPARES ...................................................................... 38
9.1
Model 7997 200 Series .................................... 38
9.2
Model 7997 300 ............................................... 38
9.3
Model 7997 400 Series .................................... 39
9.4
Calibration Standards ....................................... 39
9.5
De-bubbler ....................................................... 39
APPENDIX A ....................................................................... 40
A1
Principle of Operation ....................................... 40
A1.1
Nephelometric .................................... 40
A1.2
Absorption .......................................... 40
A1.3
Calibration .......................................... 40
APPENDIX B ....................................................................... 41
B1
Determination of the Correction Factor ............ 41
B1.1
Definition ............................................. 41
B1.2
Method ............................................... 41
APPENDIX C ....................................................................... 42
C1
7997 100 Sensors ............................................ 42
C1.1
Description ......................................... 42
C1.2
Flow Unit Dimensions ......................... 42
C1.3
Connections ....................................... 43
C1.4
Connections ....................................... 44
C1.5
Turbidity Unit Connection Box ............ 45
C1.6
Maintenance ....................................... 46
C1.7
Spares ................................................ 46
C1.8
Specification ....................................... 46
1
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