Great Lakes Instruments 692P - Page 3

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Model 692P Rev. 9-898

-2-

Table of Contents

Default Chapter4
- Default Chapter4
  - Table of Contents4
- Part One - Introduction8
General Information8
- Instrument Capability: Input Versatility8
- Battery Backup8
- Product Identification9
Section 2 - Specifications10
- Part Two - Installation11
Section 1 - Unpacking11
Mechanical Requirements11
- Location11
- Mounting11
- Plugging Conduit Holes13
Electrical Connections13
- GLI 5-Wire Differential Technique Sensor13
- Figure 2-4 Connection Details for Combination Electrode with Triaxial Cable14
- Figure 2-3 Connection Details for Combination Electrode with Coaxial Cable14
- Temperature Compensation14
- Part Three - Operation20
Operating Controls20
- Keypad Switches20
- Slide Switches23
- Program Jumper25
Measured Variables26
- Calling up Setup Variables27
- Entering Values27
Setup Variables27
- Setup Variables Call-Up Chart and Table of Descriptions27
Figure 3-3 Display Modes and Call-Up Chart of Setup Variables28
Table B Description of Ph Setup Variables29
Table C Description of Temperature Setup Variables29
- Checking Battery Backup Jumper30
Instrument Startup30
- Setting Sensor Input Type30
  - GLI 5-Wire Differential Technique Sensor30
  - Conventional Combination Electrode30
Table D Description of MV Setup Variables30
- Selecting Default State for Out-Of-Range Condition31
- Selecting Temperature Display Units (°C or °F)31
Temperature Calibration31
- Temperature Effects on Ph Reading31
- Understanding Calibration31
- Single-Point Method32
Ph CALIBRATION 6.1 Summary of Methods33
- Conventional Single-Point Method34
- Conventional Two-Point Method35
- Two-Point Method35
- Two-Key" Two-Point Method36
Table E Buffer Values for "Two-Key" Table Method40
- Performing Calibration41
Output Setup42
- Using Range Expand Feature42
  - Setting Low Endpoint42
  - Setting High Endpoint43
- Locking Stored Values44
- Using Output Hold Feature44
Using Security Lock Feature44
- 4- Rev. 9-89845
- Part Four - Operating Aids46
  - Unlocking Stored Values45
Preserving Measurement Accuracy46
- Keeping Sensor Clean46
- Keeping Instrument Calibrated46
- Checking Sensor Slope46
- Avoiding Ground Loop Errors46
- Avoiding Electrical Interference46
  - Checking Buffers for "Two-Key" Table Method of Ph Calibration46
MV CALIBRATION48
- Single-Point Method48
- Two-Point Method48
Section 3 - Simulating Measured Values50
Figure 5-1 Instrument Operations Block Diagram51
Part Five - Principle of Operation51
Table F System Diagnostic Error Messages/Meanings53
- Resetting Instrument to Factory-Default Values54
- Isolating the Problem54
  - Checking Electrical Connections54
  - Checking Instrument55
- Customer Assistance56
Part Six - Service and Maintenance53
- Inspecting Sensor Cable53
- Checking System Periodically53
Troubleshooting53
- System Diagnostic Error Messages53
Table G Troubleshooting Common Problems56
Part Seven - Spare Parts and Accessories58