User guide

SECTION PAGE
1 INTRODUCTION
1.1 SCOPE......................................................................................................................................................... 1
1.1.1 Functional Descriptions ................................................................................................................. 1
1.1.2 Applications ................................................................................................................................... 1
1.2 SPECIFICATIONS ....................................................................................................................................... 1
1.3 CONDUCTIVITY CELLS .............................................................................................................................. 2
1.3.1 Cell Specifications ......................................................................................................................... 2
1.4 OPTIONAL FEATURES ............................................................................................................................... 2
1.4.1 Accessories................................................................................................................................... 2
1.5 HOW TO ORDER ........................................................................................................................................ 2
2 INSTALLATION
2.1 GENERAL .................................................................................................................................................... 4
2.2 MECHANICAL INSTALLATION.................................................................................................................... 4
2.2.1 Surface Mounting with SMP Assembly .......................................................................................... 5
2.2.2 Surface Mounting without SMP Assembly ..................................................................................... 5
2.2.3 Panel Mounting .............................................................................................................................. 5
2.3 CELL INSERTION / DIP MOUNT ASSEMBLIES ......................................................................................... 5
2.3.1 Insertion Mode Assembly .............................................................................................................. 5
2.3.2 Alternate Dip Cell Assembly .......................................................................................................... 5
2.4 ELECTRICAL INSTALLATION ..................................................................................................................... 6
2.4.1 Main AC Power Installation ............................................................................................................ 6
2.4.2 220 VAC Conversion ..................................................................................................................... 6
2.4.3 Connecting the Cell Cable ............................................................................................................. 7
2.4.4 Alarm Relay Installation ................................................................................................................. 7
2.5 0-10 VDC RECORDER OUTPUT ................................................................................................................ 7
2.6 CONNECTING THE MODEL 758 4-20 mA AND 420D OPTIONS............................................................... 7
2.7 INSTALLATION OF THE MODEL 767 OPTIONS ........................................................................................7
2.7.1 Connecting the 420D Option ......................................................................................................... 7
2.7.2 Connecting the RM Option ............................................................................................................ 7
3 OPERATING PROCEDURES
3.1 SWITCH AND INDICATOR CONTROLS ..................................................................................................... 8
3.1.1 Red “Above Set Point” LED Indicator ............................................................................................ 8
3.1.2 Green “Below Set Point” LED Indicator ......................................................................................... 8
3.1.3 Set Point Adjustment Knob ............................................................................................................ 8
3.1.4 “Set Point Check” Switch ............................................................................................................... 8
3.1.5 Analog / Digital Meter Readouts .................................................................................................... 8
3.1.6 Three “Range” Select Switch ......................................................................................................... 8
3.1.7 Three “Cell” Select Switch ............................................................................................................. 8
3.2 MODEL 767 STANDARD AND OPTIONAL FEATURES.............................................................................. 9
3.3 SETUP PROCEDURES ............................................................................................................................. 10
3.3.1 Decreasing Set Point Conversion ................................................................................................ 10
3.3.2 Set Point Adjustment ................................................................................................................... 10
3.4 CHECK-OUT PROCEDURES ................................................................................................................... 10
3.4.1 Model 755 (Only) ......................................................................................................................... 10
3.4.2 Models 756, 757, 758 & 767 ........................................................................................................ 10
4 COMPONENT IDENTIFICATION, CALIBRATION AND PREVENTIVE CARE
4.1 PRIMARY COMPONENT IDENTIFICATION ..............................................................................................11
4.2 METER MECHANICAL ZERO PROCEDURES ......................................................................................... 12
4.3 CALIBRATION PROCEDURES ................................................................................................................. 12
4.3.1 Calibration Procedures using Standard Solution ......................................................................... 12
4.3.2 Calibration Procedures (Circuit Only) .......................................................................................... 12
4.3.2.1 Model 755 .................................................................................................................. 12
4.3.2.2 Models 756, 757 & 758 .............................................................................................. 12
4.3.3 Model 758 with 4-20mA or 420D Options .................................................................................... 12
4.3.4 Model 767 .................................................................................................................................... 13
4.3.5 Model 767 Equipped with the 420D Option ................................................................................. 13
4.4 PREVENTIVE CARE
5 APPENDIX
A REPLACEABLE COMPONENTS CHART ................................................................................................. 14
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