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Table of Contents
1. Introduction............................................................................................4
2. Display and keypad functions .............................................................5-6
2.1 Display ...................................................................................................................................5
2.2 Keypad ...................................................................................................................................6
3. Preparation ..........................................................................................7-9
3.1 Inserting the batteries ..........................................................................................................7
3.2 Probe information — Connecting the probes...............................................................8-9
4. Calibration .......................................................................................10-19
4.1 Important information on meter calibration .................................................................10
4.2 Preparing the meter for pH calibration ..........................................................................11
4.3 pH calibration................................................................................................................12-13
4.4 Preparing the meter for DO calibration..........................................................................14
4.5 Dissolved oxygen calibration in % saturation..........................................................15-16
4.6 Dissolved oxygen calibration in mg/l (ppm) mode ...............................................17-18
4.7 Temperature calibration ....................................................................................................19
5. Measurement ...................................................................................20-24
5.1 Taking DO readings......................................................................................................20-21
5.2 Taking pressure/salinity compensated DO measurements ...................................21-22
5.3 Taking pH readings ......................................................................................................23-24
5.4 Manual temperature compensation ................................................................................25
6. Hold function ........................................................................................26
7. Backlit LCD............................................................................................27
8. Advanced SETUP functions ..............................................................28-55
8.1 Advanced setup mode overview................................................................................29-31
pH measurement mode overview ................................................................................29
% saturation measurement mode overview ...............................................................30
mg/l (ppm) measurement mode overview.................................................................31
8.2 pH mode—Program P1.0: Viewing previous calibration data....................................32
8.3 pH mode—Program P2.0: Viewing electrode data..................................................33-34
P2.1 Electrode offset .........................................................................................................33
P2.2 Electrode slope .........................................................................................................34
8.4 pH mode—Program P3.0: pH measurement configuration...................................35-37
P3.1 READY indicator and auto endpoint function....................................................35
P3.2 Selecting number of pH calibration points ..........................................................36
P3.3 Selecting °C or °F .....................................................................................................37
8.5 pH mode—Program P4.0: Resetting to factory default settings .................................38
8.6 % saturation mode—Program P1.0: Dissolved oxygen parameters
Pressure adjustment mode..............................................................................................39
8.7 % saturation mode—Program P2.0: Offset adjustment................................................40
8.8 % saturation mode—Program P3.0: Previous calibration information......................41
8.9 % saturation mode—Program P4.0: Electrode properties ...........................................42
8.10 % saturation mode—Program P5.0: Unit configuration .......................................43-44
P5.1 READY indicator and auto endpoint function....................................................43
P5.2 Selecting °C or °F temperature readout................................................................44
8.11 % saturation mode—Program P6.0: Adjusting LCD brightness ...............................45
8.12 % saturation mode—Program P7.0: Resetting to factory default .............................46
8.13 mg/l (ppm) mode—Program P1.0: Dissolved oxygen parameters ....................47-48
P1.1 Pressure adjustment mode .....................................................................................47
P1.2 Salinity adjustment mode .......................................................................................48
8.14 mg/l (ppm) mode—Program P2.0: Previous calibration information.....................49
8.15 mg/l (ppm) mode—Program P3.0: Electrode properties ..........................................50
8.16 mg/l (ppm) mode—Program P4.0: Unit configuration ........................................51-53
P4.1 READY indicator and auto endpoint function....................................................51
P4.2 Selecting mg/l or ppm units..................................................................................52
P4.3 Selecting °C or °F temperature readout................................................................53
8.17 mg/l (ppm) mode—Program P5.0: Adjusting LCD brightness................................54
8.18 mg/l (ppm) mode—Program P6.0: Resetting to factory default ..............................55
9. Probe care and maintenance...........................................................56-60
9.1 pH electrode care ..........................................................................................................56-57
9.2 DO probe care .....................................................................................................................57
9.3 Membrane replacement ...............................................................................................58-59
9.4 Electrolyte solution ............................................................................................................60
10. Troubleshooting..................................................................................61
11. Error Messages ....................................................................................62
12. Specifications ......................................................................................63
13. Accessories .....................................................................................64-65
14. Appendix 1: Meter theory ..................................................................66
15. Appendix 2: Pressure vs. Altitude table.............................................67
16. Appendix 3: Factory default settings.................................................68
17. Warranty .............................................................................................69
18. Return of Items...................................................................................69
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