Aquaread Aquaprobe AP-800 User manual

Instruction Manual
for the
Aquaprobe® AP-700, AP-800 & AP-2000
Multiparameter Water uality Probe
and associated
Aquameter®, Utilities & Accessories
Aquaprobe® firmware Revision 4.07 and Above
Aquameter® firmware Revision 6.20 and Above
Document No. 10401-00870
Revision: R
Date: March 27, 2017
Aquaread® Ltd
Bridge House
Northdown Industrial Park
Broadstairs
Kent
CT10 3JP
ENGL ND
Phone: [phone]
www.aquaread.com

quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
PROPRIETARY NOTICE
The information disclosed within this document or separately supplied in furtherance of this document includes
proprietary rights of Aquaread® Ltd. Neither this document nor the information disclosed herein or of a
supplementary nature shall be reproduced or transferred to other documents or used for any other purposes,
except as specifically authorised in writing by Aquaread® Ltd. Copyright 017 Aquaread® Ltd. All rights
reserved.
SOFTWARE LICENCE AGREEMENT
By using the Aquameter , its associated probes and PC based software (AquaLink),
you agree to be bound by the terms and conditions of the following software licence
agreement. Please read this agreement carefully.
Aquaread® Ltd grants you a limited license to use the software embedded in the devices (the “firmware”) in
binary executable form in the normal operation of the products. Title, ownership rights and intellectual
property rights in and to the Software remain in Aquaread® Ltd.
You acknowledge that the Software is the property of Aquaread® Ltd and is protected under British
copyright laws and international copyright treaties. You further acknowledge that the structure, organisation
and code of the Software are valuable trade secrets of Aquaread® Ltd.
You agree not to decompile, dissemble, modify, reverse assemble, reverse engineer or reduce to human
readable form the Software or any part thereof or create any derivative works based on the Software.
RECYCLING
Any product bearing this symbol must be handed over to an applicable collection point for the
recycling of electrical and electronic equipment. By ensuring this product is disposed of properly,
you will prevent possible adverse consequences for the environment which could be caused by
inappropriate waste handling.
Note: For return for recycling, please contact Aquaread® Ltd for instructions on how to return end-of-life
equipment, accessories, and all auxiliary items for proper disposal.
WARNING
Favourable indications made by this equipment do not guarantee water is safe for human or
animal consumption. This equipment can not detect the presence of harmful bacteria or toxins. If in
doubt, ALWAYS TREAT SUSPECT WATER PRIOR TO CONSUMPTION.
Limitations of Liability
Aquaread® Ltd and its affiliates specifically disclaim liability for any and all direct, indirect, special,
general, incidental, consequential, punitive or exemplary damages including, but not limited to, loss
of profits or revenue or anticipated profits or revenue or expenses incurred arising out of the use or
inability to use any Aquaread® product, miscalibration, loss of data or product failure, even if
Aquaread® Ltd and/or its affiliates has been advised of the possibility of such damages or they are
foreseeable or for claims by any third party. Notwithstanding the foregoing, in no event shall
Aquaread® Ltd and/or its affiliates aggregate liability arising under or in connection with Aquaread®
products, regardless of the number of events, occurrences, or claims giving rise to liability, be in
excess of the price paid by the purchaser for the Aquaread® product.
TRADEMARKS
Aquaread , AquaPlus™, Aquameter , Aquaprobe , AquaLink™ and RapidCal™
are all trademarks of Aquaread® Ltd.
Microsoft®, Windows® and Excel® are trademarks of Microsoft Corporation
GOOGLE™ is a trademark of Google, Inc.
Aquaread Ltd has no affiliation with Microsoft Corporation or Google, Inc.
© 2017 quaread® Ltd. www.aquaread.com Page 2 of 141

quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
What's New in this Manual?
This Manual, Revision R, covers the new features introduced in 017 with Aquaprobe®
firmware version 4.07 and Aquameter® firmware version 6. 0.
Aquameter and Aquaprobe Firmware
➢Memory storage increased to 10,000 data points. See Memory Mode
➢New Grab Sample Factor setup facility for all fluorescent electrodes.
See Fluorescent Electrode Grab Sample Correction Factor
➢New variable EC calibration point setup facility to allow EC calibration at any value
See EC / Temperature Electrode Calibration and Maintenance
➢New ORP calibration value selection facility. See Calibrating ORP
➢Calibration report values now stored with each data point with new screens to view
report values for every parameter. See Calibration Data Storage and Retrieval
➢New Probe temperature sensor calibration screen. See Calibrating Temperature
PC Software
Both the AquaLink (Version 5.00) and AquaCal (Version .00) PC applications have been
upgraded to take full advantage of all the new features listed above. The latest versions
can be downloaded free of charge from http://www.aquaread.com/downloads.php
Not Running the Latest Firmware?
All the new firmware featured in this manual can be retrofitted to any existing metal
connector type Aquaprobe® (regardless of current firmware revision) and to any Aquameter
currently running firmware version 4.50 or above.
In order to have access to the new features, both the Aquaprobe® and associated
Aquameter® must be upgraded together.
Aquameters currently running firmware revisions lower than 4.50 can not be upgraded due
to lack of sufficient memory space.
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
Table of Contents
WHAT'S NEW IN THIS MANUAL?...............................................................................................................................3
1. INTRODUCTION..........................................................................................................................................................10
2. WHAT’S IN THE BOX?...............................................................................................................................................10
2.1. THE AQUAMETER® AND THE ENVIRONMENT....................................................................................................................10
2.2. THE AQUAPROBE® AND THE ENVIRONMENT.....................................................................................................................10
2.3. IMPORTANT INFORMATION ABOUT THE PROBE SLEEVE & SLEEVE END CAP ..........................................................................11
2.4. TOP TIPS FOR SUCCESSFUL MEASUREMENTS USING OPTICAL ELECTRODES ................................................................................12
2.5. ABOUT THE LANYARD...................................................................................................................................................12
3. BATTERY INSTALLATION AND CARE.................................................................................................................13
3.1. CHOICE OF BATTERY TYPE............................................................................................................................................13
3.2. BATTERY LIFE..............................................................................................................................................................13
3.3. BATTERY CHARGING.....................................................................................................................................................13
3.4. BATTERY CONDITION ICON.............................................................................................................................................13
3.5. BATTERY SAVER FUNCTIONS..........................................................................................................................................13
4. OVERVIEW OF THE OPERATIN SYSTEM.........................................................................................................14
4.1. INITIAL S ITCH ON, LANGUAGE AND CLOCK SETUP .........................................................................................................14
5. CONNECTIN AN AP-2000........................................................................................................................................15
5.1. CONNECTING THE AQUAMETER®....................................................................................................................................15
6. TAKIN MEASUREMENTS......................................................................................................................................15
6.1. HAT DOES IT ALL MEAN?.........................................................................................................................................16
6.2. TREND INDICATION.......................................................................................................................................................17
6.3. GLOBAL STABILITY INDICATION ......................................................................................................................................17
6.4. TEMPERATURE COMPENSATION.......................................................................................................................................17
6.5. GPS RECEPTION..........................................................................................................................................................18
7. DEPTH MEASUREMENT (AQUAPROBES WITH A - D SUFFIX ONLY).........................................................20
7.1. TAKING DEPTH MEASUREMENTS.....................................................................................................................................20
7.2. DIFFERENTIAL DEPTH MEASUREMENT..............................................................................................................................20
7.3. DEPTH CALIBRATION.....................................................................................................................................................20
8. MEMORY MODE.........................................................................................................................................................21
8.1. MANUALLY SAVING READINGS.......................................................................................................................................21
8.2. RECALLING AND VIE ING SAVED READINGS....................................................................................................................21
8.3. RECALLING GLP DATA................................................................................................................................................21
8.4. CLEARING THE MEMORY................................................................................................................................................22
8.5. AUTOMATIC DATA LOGGING..........................................................................................................................................22
8.6. BATTERY AND MEMORY DURATION IN LO PO ER LOGGING MODE..................................................................................24
8.7. IMPORTANT INFORMATION ABOUT MEMORY MODE...........................................................................................................24
9. SETUP & INSTALL......................................................................................................................................................25
9.1. SETTING UNITS OF MEASUREMENT..................................................................................................................................25
9.2. AUX SOCKET ASSIGNMENT (NOT APPLICABLE TO THE AP-700)........................................................................................26
10. RAPIDCAL CALIBRATION METHOD..................................................................................................................28
10.1. ABOUT CALIBRATION..................................................................................................................................................28
10.2. SPECIAL NOTES CONCERNING ISE ELECTRODES.............................................................................................................28
10.3. USING RAPIDCAL.......................................................................................................................................................28
To Check / Calibrate the 100% DO Saturation Point in Damp Air..........................................................................30
10.4. CALIBRATION ERROR MESSAGES...................................................................................................................................31
10.5. RESETTING TO FACTORY CALIBRATION DEFAULTS...........................................................................................................31
10.6. CALIBRATION REPORTS................................................................................................................................................32
10.7. CALIBRATION DATA STORAGE AND RETRIEVAL...............................................................................................................32
11. AFTER USE..................................................................................................................................................................34
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
12. ENERAL PROBE MAINTENANCE......................................................................................................................35
12.1. IDENTIFYING THE INDIVIDUAL ELECTRODES....................................................................................................................35
13. PH/ORP ELECTRODE CALIBRATION AND MAINTENANCE........................................................................36
13.1. RECOGNISING THE PH/ORP ELECTRODE........................................................................................................................36
13.2. ELECTRODE REMOVAL AND REPLACEMENT.....................................................................................................................36
13.3. KEEPING THE ELECTRODES MOIST.................................................................................................................................36
13.4. CALIBRATING PH........................................................................................................................................................37
13.5. SPECIAL NOTES CONCERNING ISE ELECTRODES.............................................................................................................37
13.5.1. Calibrating the irst Point (pH 7.00)............................................................................................................37
13.5.2. Calibrating the Second Point.........................................................................................................................39
13.5.3. Calibrating the Third Point............................................................................................................................39
13.6. ERRORS DURING CALIBRATION.....................................................................................................................................39
13.7. PH ELECTRODE EFFICIENCY.........................................................................................................................................39
13.8. SERVICING THE PH ELECTRODE.....................................................................................................................................39
13.9. CALIBRATING ORP.....................................................................................................................................................40
13.10. CONVERTING ORP READINGS TO THE HYDROGEN SCALE..............................................................................................42
14. DO ELECTRODE CALIBRATION AND MAINTENANCE.................................................................................43
14.1. RECOGNISING THE DO ELECTRODE TYPE.......................................................................................................................43
14.2. GALVANIC DO ELECTRODE.........................................................................................................................................43
14.3. PRECAUTIONS DURING USE..........................................................................................................................................43
14.4. CALIBRATING THE GALVANIC DO ELECTRODE...............................................................................................................43
14.4.1. Calibrating the DO Zero Point......................................................................................................................43
14.4.2. Calibrating the DO 100% Saturation Point in Moist Air..............................................................................44
14.5. REPLACING A GALVANIC DO ELECTRODE MEMBRANE CAP.............................................................................................45
14.6. OPTICAL DO ELECTRODE............................................................................................................................................46
14.7. CALIBRATING THE OPTICAL DO ELECTRODE..................................................................................................................46
14.8. CALIBRATING THE DO ZERO POINT..............................................................................................................................46
14.9. CALIBRATING THE DO 100% SATURATION POINT IN MOIST AIR.....................................................................................47
14.10. REPLACING THE OPTICAL DO CAP.............................................................................................................................48
15. EC / TEMPERATURE ELECTRODE CALIBRATION AND MAINTENANCE...............................................49
15.1. VERIFYING EC CALIBRATION.......................................................................................................................................51
15.2. ERRORS DURING CALIBRATION.....................................................................................................................................51
15.3. CLEANING THE EC CONTACTS......................................................................................................................................51
15.4. CALIBRATING TEMPERATURE........................................................................................................................................51
16. OPTIONAL OPTICAL ELECTRODES CALIBRATION AND MAINTENANCE............................................53
16.1. TOP TIPS FOR SUCCESSFUL MEASUREMENTS USING OPTICAL ELECTRODES..............................................................................54
16.2. OPTICAL ELECTRODE CALIBRATION SEQUENCE...............................................................................................................54
16.3. FLUORESCENT ELECTRODE GRAB SAMPLE CORRECTION FACTOR.......................................................................................54
16.4. 2000-TURB TURBIDITY ELECTRODE...........................................................................................................................55
16.4.1. About Turbidity..............................................................................................................................................55
16.4.2. Turbidity Electrode Installation.....................................................................................................................55
16.4.3. Precautions During Use.................................................................................................................................56
16.4.4. Negative Turbidity Readings..........................................................................................................................56
16.4.5. Calibrating the Turbidity Electrode...............................................................................................................56
16.4.6. Calibration Points..........................................................................................................................................56
16.4.7. Turbidity Zero Point Calibration...................................................................................................................57
16.4.8. Verifying the Zero Calibration.......................................................................................................................58
16.4.9. Calibrating the Turbidity 20 NTU & 1000 NTU Points.................................................................................58
16.4.10. Errors During Calibration...........................................................................................................................59
16.4.11. Lens and Sleeve Maintenance......................................................................................................................59
16.5. 2000/5000-BGA-PC FRESH ATER BLUE-GREEN ALGAE (PHYCOCYANIN) ELECTRODE.....................................................60
16.5.1. Principle of Operation...................................................................................................................................60
16.5.2. Limitations of Use..........................................................................................................................................60
16.5.3. Calibrating the BGA-PC Electrode................................................................................................................60
16.5.4. Calibration Solution Preparation..................................................................................................................61
16.5.5. Serial Dilution................................................................................................................................................61
16.5.6. Zero Point Calibration...................................................................................................................................62
16.5.7. Calibrating Point 2.........................................................................................................................................63
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
16.5.8. Calculating and Applying a Grab Sample actor.........................................................................................63
16.5.9. Errors During Calibration.............................................................................................................................64
16.5.10. Lens and Sleeve Maintenance......................................................................................................................64
16.6. 2000/5000-BGA-PE SALT ATER BLUE-GREEN ALGAE (PHYCOERYTHRIN) ELECTRODE...................................................65
16.6.1. Principle of Operation...................................................................................................................................65
16.6.2. Limitations of Use..........................................................................................................................................65
16.6.3. Calibrating the BGA-PE Electrode................................................................................................................65
16.6.4. Calibration Solution Preparation..................................................................................................................66
16.6.5. Serial Dilution................................................................................................................................................66
16.6.6. Zero Point Calibration...................................................................................................................................67
16.6.7. Calibrating Point 2.........................................................................................................................................68
16.6.8. Calculating and Applying a Grab Sample actor.........................................................................................68
16.6.9. Errors During Calibration.............................................................................................................................69
16.6.10. Lens and Sleeve Maintenance......................................................................................................................69
16.7. 2000/5000-CPHYLL CHLOROPHYLL ELECTRODE........................................................................................................70
16.7.1. Principle of Operation...................................................................................................................................70
16.7.2. Limitations of Use..........................................................................................................................................70
16.7.3. Calibrating the CPHYLL Electrode...............................................................................................................70
16.7.4. Calibration Solution Preparation..................................................................................................................71
16.7.5. Serial Dilution................................................................................................................................................71
16.7.6. Zero Point Calibration...................................................................................................................................72
16.7.7. Calibrating Point 2.........................................................................................................................................73
16.7.8. Calculating and Applying a Grab Sample actor.........................................................................................73
16.7.9. Errors During Calibration.............................................................................................................................74
16.7.10. Lens and Sleeve Maintenance......................................................................................................................74
16.8. 2000/5000-RHOD RHODAMINE T ELECTRODE........................................................................................................75
16.8.1. Principle of Operation...................................................................................................................................75
16.8.2. Limitations of Use..........................................................................................................................................75
16.8.3. Calibrating the RHOD Electrode...................................................................................................................75
16.8.4. Calibration Solution Preparation..................................................................................................................75
16.8.5. Serial Dilution................................................................................................................................................76
16.8.6. Zero Point Calibration...................................................................................................................................76
16.8.7. Calibrating Point 2.........................................................................................................................................78
16.8.8. Grab Sample actor.......................................................................................................................................78
16.8.9. Errors During Calibration.............................................................................................................................78
16.8.10. Lens and Sleeve Maintenance......................................................................................................................78
16.9. 2000/5000-FSCEIN FLUORESCEIN T ELECTRODE....................................................................................................79
16.9.1. Principle of Operation...................................................................................................................................79
16.9.2. Limitations of Use..........................................................................................................................................79
16.9.3. Calibrating the SCEIN Electrode................................................................................................................79
16.9.4. Calibration Solution Preparation..................................................................................................................79
16.9.5. Serial Dilution................................................................................................................................................80
16.9.6. Zero Point Calibration...................................................................................................................................80
16.9.7. Calibrating Point 2.........................................................................................................................................82
16.9.8. Grab Sample actor.......................................................................................................................................82
16.9.9. Errors During Calibration.............................................................................................................................82
16.9.10. Lens and Sleeve Maintenance......................................................................................................................82
16.10. 2000/5000-REFOIL REFINED OIL ELECTRODE.........................................................................................................83
16.10.1. Principle of Operation.................................................................................................................................83
16.10.2. Limitations of Use........................................................................................................................................83
16.10.3. Special Precautions When Using the RE OIL Electrode............................................................................84
16.10.4. Calibrating the RE OIL Electrode..............................................................................................................84
16.10.5. Calibration Solution Preparation................................................................................................................84
16.10.6. Serial Dilution..............................................................................................................................................84
16.10.7. Zero Point Calibration.................................................................................................................................85
16.10.8. Calibrating Point 2.......................................................................................................................................86
16.10.9. Calculating and Applying a Grab Sample actor.......................................................................................87
16.10.10. Errors During Calibration.........................................................................................................................87
16.10.11. Lens and Sleeve Maintenance....................................................................................................................87
16.11. 2000/5000-CDOM/FDOM CHROMOPHORIC (FLUORESCENT) DISSOLVED ORGANIC MATTER.........................................88
16.11.1. Principle of Operation.................................................................................................................................88
16.11.2. Limitations of Use........................................................................................................................................88
16.11.3. Calibrating the CDOM Electrode................................................................................................................89
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
16.11.4. Calibration Solutions...................................................................................................................................89
16.11.5. Zero Point Calibration.................................................................................................................................89
16.11.6. Calibrating Point 2.......................................................................................................................................91
16.11.7. Calculating and Applying a Grab Sample actor.......................................................................................91
16.11.8. Errors During Calibration...........................................................................................................................92
16.11.9. Lens and Sleeve Maintenance......................................................................................................................92
17. OPTIONAL ISE ELECTRODES CALIBRATION AND MAINTENANCE........................................................93
17.1. ISE ELECTRODE LIMITATIONS......................................................................................................................................93
17.2. CALIBRATION POINTS..................................................................................................................................................93
17.3. SPECIAL NOTES CONCERNING ISE ELECTRODES DURING PH CALIBRATION.........................................................................93
17.4. 2000-AMM AMMONIUM/AMMONIA ELECTRODE...........................................................................................................94
17.4.1. Ammonium Calibration Solution Preparation...............................................................................................94
17.4.2. Three-point Calibration.................................................................................................................................94
POINT 2.............................................................................................................................................................................96
POINT 3.............................................................................................................................................................................96
17.4.3. Two-point Calibration....................................................................................................................................97
17.4.4. Single-point Calibration.................................................................................................................................97
17.4.5. Errors During Calibration.............................................................................................................................97
17.5. 2000-NIT NITRATE ELECTRODE..................................................................................................................................98
17.5.1. Nitrate Calibration Solution Preparation......................................................................................................98
17.5.2. Three-point Calibration.................................................................................................................................98
POINT 2...........................................................................................................................................................................100
POINT 3...........................................................................................................................................................................100
17.5.3. Two-point Calibration..................................................................................................................................101
17.5.4. Single-point Calibration...............................................................................................................................101
17.5.5. Errors During Calibration...........................................................................................................................101
17.6. 2000-CHL CHLORIDE ELECTRODE............................................................................................................................102
17.6.1. Chloride Calibration Solution Preparation.................................................................................................102
17.6.2. Three-point Calibration...............................................................................................................................102
POINT 2...........................................................................................................................................................................104
POINT 3...........................................................................................................................................................................104
17.6.3. Two-point Calibration..................................................................................................................................105
17.6.4. Single-point Calibration...............................................................................................................................105
17.6.5. Errors During Calibration...........................................................................................................................105
17.7. 2000-CAL CALCIUM ELECTRODE.............................................................................................................................106
17.7.1. Calcium Calibration Solution Preparation..................................................................................................106
17.7.2. Three-point Calibration...............................................................................................................................106
POINT 2...........................................................................................................................................................................108
POINT 3...........................................................................................................................................................................108
17.7.3. Two-point Calibration..................................................................................................................................109
17.7.4. Single-point Calibration...............................................................................................................................109
17.7.5. Errors During Calibration...........................................................................................................................109
17.8. 2000-FLU FLUORIDE ELECTRODE.............................................................................................................................110
17.8.1. luoride Calibration Solution Preparation.................................................................................................110
17.8.2. Three-point Calibration...............................................................................................................................111
POINT 2...........................................................................................................................................................................112
POINT 3...........................................................................................................................................................................112
17.8.3. Two-point Calibration..................................................................................................................................113
17.8.4. Single-point Calibration...............................................................................................................................113
17.8.5. Errors During Calibration...........................................................................................................................113
18. AQUALINK PC SOFTWARE..................................................................................................................................114
18.1. DO NLOADING AQUALINK™ PC SOFT ARE FROM THE AQUAREAD® EBSITE...............................................................114
18.2. SOFT ARE INSTALLATION..........................................................................................................................................114
18.3. DRIVER INSTALLATION...............................................................................................................................................114
18.4. RUNNING AQUALINK................................................................................................................................................114
18.5. UPLOADING DATA FROM YOUR AQUAMETER®............................................................................................................115
18.6. DISPLAYING GPS CO-ORDINATES...............................................................................................................................126
18.7. ON SCREEN HELP.....................................................................................................................................................126
18.8. SAVING LOGGED DATA.............................................................................................................................................127
18.9. RETRIEVING LOGGED DATA.......................................................................................................................................127
18.10. EXPORTING DATA...................................................................................................................................................127
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
18.11. EXPORTING TEXT REPORTS......................................................................................................................................127
18.12. TYPICAL TEXT REPORT COVER PAGE........................................................................................................................128
18.13. EXPORTING EXCEL® FILES......................................................................................................................................129
18.14. EXPORTING GOOGLE™ FILES...................................................................................................................................129
18.15. IMPORTING FILES INTO GOOGLE™ EARTH.................................................................................................................129
18.16. GOOGLE™ EXAMPLE..............................................................................................................................................130
19. LIMITED WARRANTY...........................................................................................................................................131
19.1. CLEANING PRIOR TO RETURN....................................................................................................................................131
19.2. DECONTAMINATION CERTIFICATE................................................................................................................................132
20. TROUBLESHOOTIN .............................................................................................................................................133
21. DECLARATION OF CONFORMITY....................................................................................................................134
22. APPENDIX 1. THE TECH BEHIND AQUAREAD’S OPTICAL DO MEASUREMENT SYSTEM..............135
22.1. PRINCIPLE OF OPERATION...........................................................................................................................................135
22.2. SENSOR CAP LIFE.....................................................................................................................................................136
23. APPENDIX 2. FLOW THROU H CELL..............................................................................................................137
23.1. INTRODUCTION..........................................................................................................................................................137
23.2. SPIGOT INSTALLATION...............................................................................................................................................137
23.3. AQUAPROBE® INSTALLATION.....................................................................................................................................137
23.4. ZEROING OPTICAL ELECTRODES..................................................................................................................................137
23.5. OPERATION..............................................................................................................................................................137
23.6. CAUTION.................................................................................................................................................................138
23.7. CLEANING................................................................................................................................................................138
23.8. FLO CELL TROUBLESHOOTING....................................................................................................................................138
24. APPENDIX 3. FITTIN AUX ELECTRODES.....................................................................................................139
24.1. INSTALLING AUX ELECTRODES..................................................................................................................................139
24.2. SOCKET ASSIGNMENT AND CALIBRATION......................................................................................................................140
25. APPENDIX 4. STANDARD ELECTRODES DETAILED SPECIFICATION...................................................142
26. APPENDIX 5. OPTICAL ELECTRODES DETAILED SPECIFICATION AND FAQS..................................143
26.1. HAT ARE THE EXCITATION AND DETECTION AVELENGTHS?..........................................................................................143
26.2. HO DOES THE REFINED OIL SENSOR ORK?...............................................................................................................143
26.3. I CAN SEE ALGAE IN THE ATER BUT MY SENSOR IS GIVING LO READINGS. HY?.............................................................144
26.4. HAT IS THE RANGE AND RESOLUTION OF THE OPTICAL ELECTRODES?...........................................................................144
26.5. HAT IS THE ACCURACY OF THE OPTICAL ELECTRODES?...............................................................................................145
27. APPENDIX 6. ISE ELECTRODES DETAILED SPECIFICATION...................................................................146
27.1. SPECIAL NOTES CONCERNING ISE ELECTRODES DURING PH CALIBRATION.......................................................................147
28. APPENDIX 7. TROUBLESHOOTIN TURBIDITY...........................................................................................148
28.1. LENS AND SLEEVE MAINTENANCE...............................................................................................................................148
28.2. ABOUT TURBIDITY MEASUREMENT..............................................................................................................................149
28.3. PRECAUTIONS DURING USE........................................................................................................................................149
28.4. NEGATIVE TURBIDITY READINGS................................................................................................................................149
28.5. AERATION................................................................................................................................................................150
28.6. REFLECTION.............................................................................................................................................................150
28.7. SENSOR SATURATION.................................................................................................................................................150
28.8. TOP TIPS FOR SUCCESSFUL MEASUREMENTS USING OPTICAL ELECTRODES............................................................................151
28.9. REFERENCES.............................................................................................................................................................152
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
1. Introduction
This manual specifically covers the setup, operation, calibration and maintenance of
Aquaprobe® models AP-700, AP-800 & AP- 000 running V4.07+ firmware, Aquameter®
models running V6. 0+ firmware, AquaLink V5.00+ PC software and associated
Aquaprobe® accessories. If your Aquaprobe® or Aquameter® are running earlier firmware,
the functionality may differ from that shown in this manual. In this case, contact Aquaread
for an earlier version of this manual or return your equipment for firmware upgrade.
2. What’s in the Box?
The Aquameter® is supplied with the following:
The Aquameter® unit.
Quick release lanyard.
Set of 5 AA Alkaline batteries.
USB Cable for downloading logged data to a PC.
Cross-head screwdriver for fitting the batteries and Probe maintenance.
Getting started card for quick reference.
The Aquaprobe® is supplied with the following:
Protective Sleeve End Cap.
Calibration bottle filled with RapidCal Solution.
Spare calibration / rinse bottle.
One mounting nut (pre-fitted).
Getting started card for quick reference.
5mL bottle of pH storage solution.
Pot of silicone grease.
Spare Galvanic DO Membrane Cap (AP-700 & AP-800 only)
5mL bottle of Galvanic DO filling solution (AP-700 & AP-800 only)
If using an AP- 000, you will also need an AP- 000 Extension Cable, which should be
purchased separately.
2.1. The Aquameter and the Environment
The Aquameter® is designed to be used outdoors and is rated to IP67, that is to say it is
waterproof but it is not designed for submersion. In order to prevent accidental dunking or
loss, a lanyard is supplied.
Please note that the socket on the Aquameter is only waterproof when the
associated plug is fitted. Without the plug fitted, water can enter the socket. Damage
caused by water ingress through the socket is not covered by your warranty.
You may notice a small hole on the rear of the unit near the top. This is a waterproof vent
for the internal barometric sensor. Do not poke anything in this hole! Doing so will cause
major damage to the vent’s waterproof membrane and invalidate your warranty.
2.2. The Aquaprobe and the Environment
The Aquaprobe® AP-700 and AP-800 models are designed to be fully submerged in water
and are rated to IP68, that is to say, they are rated for continual immersion to a depth of 10
meters, and short term immersion (less than 1 hours) to a depth of 50 meters.
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The Aquaprobe® AP- 000 and AP- 000-D models are designed to be fully submerged in
water and are rated to IP68, that is to say, they are rated for continual immersion to a depth
of 30 meters, and short term immersion (less than 1 hours) to 100 meters.
2.3. Important Information about the Probe Sleeve & Sleeve End Cap
The Aquaprobe® is constructed with an aluminium sleeve surrounding the delicate sensing
electrodes. The Sleeve can be easily removed by unscrewing to allow cleaning of the
individual electrodes, however, the Probe sleeve forms an integral, working part of the
Probe’s measurement system, and MUST be fitted for correct operation.
Probe sleeves are also specifically matched to the Probe with which they were
supplied. If you have more than one Aquaprobe , be sure not to mix the sleeves up
between the Probes. Doing so may seriously affect the performance of the EC
electrode.
All Aquaread® Optical Electrodes are incredibly sensitive. For example, the Turbidity
electrode is capable of measuring between 0 and 3000NTU with an internal resolution of
greater than 0.1NTU. This means that the electrode is able to detect changes in turbidity
that are less than 0.003% of the full range! The other optical electrodes have a similar level
of sensitivity.
It follows, therefore, that in order to provide stable, repeatable readings, the environment in
which the measurements are made must be completely stable and repeatable.
For this reason, the Aquaprobe®
is constructed with a matt black
aluminium sleeve and end cap
that enclose the sensing
electrodes and provide a closed,
constant condition, non reflective
measurement chamber.
This is essential for the
correct calibration and
operation of all types of
optical electrodes.
A diagram of the Aquaprobe’s
measurement chamber is shown
here.
In order to obtain consistent results, the measurement chamber created within the
Aquaprobe must remain physically constant during both calibration and
measurement.
If the optical electrode is calibrated under one set of conditions then used to measure under
another set of conditions, the readings will naturally be erroneous, especially at low
concentrations.
A perfect example of this is calibrating with the end cap removed then measuring with the
end cap fitted (or vice-versa). By changing the physical characteristics of the measurement
chamber, you also change the calibration and response of the electrode.
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Another particular problem when trying to measure very low
concentrations is air in the form of both visible and microscopic
bubbles. These act like tiny prisms and can refract and reflect both
the excitation light and the return signal being measured.
The photograph to the right was taken in a calibration tube after
fresh water was poured in. The bubbles are clearly visible in the
light beam.
2.4. Top Tips for successful measurements using optical electrodes
Always keep the measurement chamber and electrode lenses clean.
Always fit the sleeve and end cap during both calibration and measurement.
Always allow the readings to settle completely during both calibration and
measurement.
Always try to eliminate air bubbles by agitating the Probe after insertion both during
calibration and measurement.
Always calibrate and zero the electrode as close to your sample temperature as
possible. This is especially important with the Ref-Oil electrode.
Always zero the optical electrodes just prior to use in clean water (bottled still mineral
water is ideal) then deploy without disturbing the measurement chamber. This is
especially important when using the Turbidity and Ref-Oil electrodes.
2.5. About the Lanyard
The lanyard supplied with the Aquameter® may, at first, appear to be a little long. This is
intentional. In order to keep the Meter out of the way whilst your hands are full, the lanyard
has been made long enough to wear round your neck and over your shoulder so the Meter
sits on your hip.
The extra length also allows the meter to be held in a comfortable position in front of you
during normal use. In order to prevent you being dragged into the water in the event of the
Probe cable becoming snagged, the lanyard includes a quick-release clip.
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3. Battery Installation and Care
The Aquameter® requires five AA size batteries. To install the batteries, loosen the two
screws on the centreline of the rear of the meter and remove the battery compartment lid.
Following the battery polarity markings inside the battery compartment, insert five AA cells
then replace the compartment lid and tighten the screws.
3.1. Choice of Battery Type
Alkaline or rechargeable batteries may be used, but never mix battery types in the meter. If
you choose to use rechargeable batteries, we recommend nergizer 500mAh (or greater)
Nickel-Metal Hydride cells, which are widely available. If the Meter is to be out of use for a
long period, remove the batteries to prevent damage due to possible leakage.
3.2. Battery Life
A set of fresh alkaline cells will give over 0 hours use in the AM- 00 GPS Aquameter®. A
fully charged set of 500mAh NiMH cells will give up to 40 hours use in the AM- 00 GPS
Aquameter®. Please be aware however that alkaline battery capacities are extremely
temperature dependant. The figures quoted throughout this manual for battery life assume
a temperature of 1°C. Battery life can be significantly shorter (by up to 50%) at lower
temperatures.
3.3. Battery Charging
During the charging process, batteries generate heat and vent gasses, and must never be
charged inside a sealed unit. Because the Aquameter® is a sealed unit, we do not allow
charging in-situ. Batteries must be removed and charged with a suitable battery charger
outside the Meter. We recommend the use of one of the nergizer range of NiMH chargers.
3.4. Battery Condition Icon
On all the main Aquameter® screens, a battery condition icon is displayed in the top left
corner. The icon shows full when the batteries are fresh, and gradually empties as the
batteries are used. When the batteries need replacing, the empty battery icon will flash on
and off. If you ignore this, the Meter will automatically switch itself off when the battery
voltage becomes too low for reliable operation.
When using rechargeable batteries, the battery icon will not show completely full, even with
freshly charged cells. This is due to the fact that rechargeable batteries are only rated at
1. V per cell compared to 1.5V per cell for alkaline batteries. This indication does not affect
battery life. The icon will simply sit at the ¾ full mark for a longer period of time.
3.5. Battery Saver Functions
The Aquameter® is designed to switch off automatically if you do not touch any of the keys
for 30 minutes. The only exception to this is if you have activated the Automatic Data
Logging feature. In this case, the Meter will continue to operate until either the memory is
full or the batteries go flat.
The display on the Aquameter® incorporates a white backlight to improve visibility in low-
light conditions. As on a mobile phone, the backlight switches on each time a key is
pressed, and stays on at full brightness for 15 seconds. After 15 seconds, the backlight will
fade to half brightness. After a further 15 seconds the backlight will switch off.
During normal operation, if you want to activate the backlight without changing the Meter
function, simply press the ESC key.
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
4. Overview of the Operating System
The operating firmware in the Aquameter® has been designed for simple, intuitive use.
Similarly, a great deal of development work has been put into simplifying and automating
the calibration procedures in the Aquameter® in order to allow normal field operatives (as
opposed to trained lab technicians) to achieve quick and accurate results.
If you are used to operating a mobile phone or programming audio/visual equipment using
a remote control, you should feel at home with the familiar up/down left/right arrow shaped
navigation keys and central OK key.
The tree structure behind the MENU key should also be very familiar. Each item on the
menu leads to a sub menu and then either onto further menus or final choices. Each
branch of the menu system is navigated using the arrow keys. At each point, selections can
be made by either pressing the OK key or the right arrow key.
To reverse along a branch of the menu system, use the ESC (escape) key or left arrow
key. After a short time, you should be able to navigate around the entire menu system at
speed using just the four arrow keys. If, at any time, you leave the Meter in one of the sub-
menu screens, it will automatically back out to the main operating screen after 15 seconds.
4.1. Initial Switch On, Language and Clock Setup
To switch the meter on or off, briefly press the red key. Do not hold it down. The meter
contains a clock and is capable of operating in several different languages. When switching
on for the first time, you must select an operating language and set the clock. The first
screen you will see is the Language Selection Screen.
 English Italiano
Francais Portugues
Deutsch Malaysia
Espanol Indonesia
To select a language, move the cursor around the list using the arrow keys. To enter your
selection, press the OK key or the right arrow key.
The next screen to be displayed is the Time & Date Setting Screen.
Time & Date
 Time:15:46: 7
Date:15/Jun/17
To set the time and date, use the arrow keys to move the cursor around the screen. Use
the up and down arrow keys to adjust values. When the time and date are correct, press
the OK key. Don’t worry if you make a mistake first time round. You can easily get back to
these screens later through the MENU key.
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5. Connecting an AP-2000
The AP- 000 is designed to connect to the Aquameter® using an AP- 000 Extension
Cable. The cable is built-in on the AP-700 & AP-800 models. The AP- 000 Extension
Cable features high-pressure metal connectors, which incorporate several O-ring seals at
the Probe end. Prior to first connection, the seals must be lubricated using the silicone
grease supplied.
Apply a generous smear of grease to the O-rings where indicated above. Be careful not to
get any grease inside the connector near the gold contacts. A small smear of grease
should also be applied to the thread on the Probe to allow easy tightening of the collar.
To connect the Extension Cable to the AP- 000, align the coloured dot on the AP- 000
with the ◄Aquaread logo on the plug body, then press the plug into the socket and
tighten the retaining collar fully. DO NOT TWIST THE CONNECTOR BODY WITH
RESPECT TO THE PROBE. Once the AP- 000 has been connected to the Extension
Cable, the Aquameter® can be connected.
5.1. Connecting the Aquameter
Always ensure the Aquameter® is switched off prior to connecting or disconnecting an
Aquaprobe®. Align the ◄Aquaread logo on the plug body with the red on/off switch on the
Aquameter®, then press the plug into the socket and tighten the retaining collar.
Once the Aquaprobe® is connected to the Aquameter®, switch the Meter on by briefly
pressing the red on/off switch. The Aquameter® should detect the Probe and automatically
start displaying readings.
6. Taking Measurements
The Aquaprobe® includes a pH/ORP electrode, which is kept moist by a storage cap.
Remove the storage cap by pulling the red lanyard marked ‘Remove Before Use / Replace
After Use’ straight down. Do not use a twisting motion to remove or replace the cap as
this can unscrew the electrode from the Probe body. Rinse any salty deposits from the
pH/ORP electrode with fresh water.
Fit the protective Sleeve End Cap into the end of the Probe sleeve. Switch the Aquameter®
on and immerse the Aquaprobe® in the sample water, making sure that the water level
covers the minimum immersion depth groove halfway up the Probe sleeve.
TIP: Occasional application of a smear of silicone grease or similar lubricant to the
protective Sleeve End Cap O ring and the inside rim of the Probe sleeve will make fitting
and removal of the Cap easier.
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If the Aquaprobe® is connected correctly, the meter will read the Probe’s serial number and
model number, then will automatically configure itself to display only those readings the
current Aquaprobe® is capable of taking. Initial Probe readings will be displayed on the
meter’s screen along with the current GPS status. The initial data screen for the GPS
Aquameter® in conjunction with the Aquaprobe® is shown below.
 TEMP:018.5°C 
ORP:0415.2 mV 
pH:06.48 
 GPS:Acquiring 
Left/right arrows at the bottom corners of the screen indicate further data screens are
available. To access these screens, simply press either the left or right arrow keys. Any
value that is out of range or unavailable will be displayed as dashes. The other four screens
available with the standard AM- 00/AP- 000-D combination are shown below.
 DO:098.7% 
EC:6541µS/cm 
TDS: 271mg/L 
 GPS: D Pos 
 SAL:0 .57 PSU 
SSG:01. σt 

 GPS: D Pos 
 BARO:101 mb
DEPTH:01.75m
Hit [OK] to zero
 GPS: D Pos 
 Lat:N51 °21.498
Long:E001°24. 2
Alt:00050M 101 mb
 Sats in use:09 
6.1. What Does It All Mean?
The screens above show the full default range of readings for the AM- 00/AP- 000-D
combination. If you are using a different Meter/Probe combination, you may have fewer
screens to choose from and the readings may appear in a different order to facilitate logical
screen layouts. If an asterisk (*) character is flashing just below the battery symbol, this
indicates that Auto Data Logging is switched on. See Automatic Data Logging in section 8.
The table below explains the readings and indicates which to expect with each Meter/Probe
combination.
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Prefix Meaning Units Available On
TEMP Probe Temperature C or F* All Probe Types
pH pH (Acidity/Alkalinity) pH or pHmV* All Probe Types
ORP Oxidation Reduction Potential mV All Probe Types
GPS GPS Status See section 6.5 AM- 00 + All Probe Types
DO Dissolved Oxygen %Sat & mg/L All Probe Types
EC Electrical Conductivity µS/cm or mS/cm†All Probe Types
TDS Total Dissolved Solids mg/L or g/l†All Probe Types
SAL Salinity PSU or ppt* All Probe Types
SSG Sea Water Specific Gravity σt All Probe Types
BARO Barometric Pressure mb or mmHg* AM- 00 + All Probe Types
DEPTH Depth above / below zero datum Meters / Feet* - D models only
Lat Latitude Degrees & Mins AM- 00 + All Probe Types
Long Longitude Degrees & Mins AM- 00 + All Probe Types
Alt Altitude above Sea Level Meters or Feet* AM- 00 + All Probe Types
Note: the Depth page is not displayed with the standard Aquaprobe®. In this case,
barometric pressure is displayed after the altitude (Alt) at the end of line 3 on the position
and altitude screen, with no prefix (as shown [1013mb] on the above screen example).
Items in the Units column marked with an asterisk (*) can be selected as alternative units of
measurement in the Settings Menu (see section 9 Setting Units of Measurement). Items in
the Units column marked with a dagger (†) are auto-ranging, i.e. when the values become
too large to display, the units of measurement automatically re-scale.
The EC field can be replaced by its reciprocal value, RES (Resistivity), if selected in the
Settings Menu. If selected, readings will be displayed in either Ω▪cm or KΩ▪cm, depending
on the value. See section 9 Setting Units of Measurement for more details.
6.2. Trend Indication
To the right of each reading, (except position, BARO and Depth), a trend indication is
given. This consists of either an upwards facing arrow (which indicates the numeric value of
the reading is rising), a downwards facing arrow (which indicates the numeric value of the
reading is falling) or a two-headed arrow, which indicates a stable reading. Readings are
judged to be stable when the variation over a ten second period drops below 1%.
6.3. Global Stability Indication
In addition to the individual trend indications, there is a global stability indication, which is
displayed when all readings are stable. This takes the form of a flashing double headed
arrow which is displayed at the start of the third line of the display.
When taking a set of readings, gently stir the Probe, or raise and lower it in the sample (if
there is no natural water flow) until the global stability icon appears. The initial display of the
global stability icon will be accompanied by a double beep. When this occurs, all values are
stable and ready for reading or saving.
6.4. Temperature Compensation
The electrochemical properties of all solutions change with the solution's temperature. In
addition, the response of electrochemical measuring electrodes change with temperature. It
is a fundamental, practical requirement in the field of water quality monitoring that test
measurements taken at different temperatures can be compared.
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In order to facilitate this, the Aquaprobe® automatically applies corrections for temperature
wherever required.
During three point calibration of the ISE electrodes, the variation in response of the
electrodes due to temperature is automatically calculated. During measurement, the
variation in response of the electrodes due to temperature is automatically compensated
for.
During calibration of the EC electrode, the variation in the calibration buffer solution due to
temperature is automatically corrected for. During measurement of EC, the readings can be
displayed without any temperature correction, corrected to 0C, or corrected to 5C. See
section 9 Setting Units of Measurement for more details.
During calibration of the DO electrode, variations due to temperature and air pressure are
automatically compensated for. During the measurement of DO, temperature, air pressure
and salinity are automatically compensated for.
During calibration of the ORP electrode, the variation in the calibration buffer solution due
to temperature is automatically corrected for. During measurement of ORP however,
temperature corrections are not applied as the correction factors are system and chemical
dependent and are not easily determined.
ORP potential measurements are mostly made to follow reactions rather than for their own
sake. The completion of an ORP reaction is normally accompanied by a sharp change in
the ORP millivolts reading. This change is usually much larger than the errors induced by
temperature side effects.
During calibration of the optical electrodes, variations in the calibration solutions due to
temperature are automatically compensated for. During the measurement, temperature is
automatically compensated for.
During calibration of the pH electrode, the small variation in the calibration buffer solutions
due to temperature is not compensated for due to the differences in thermal coefficient
between various buffer manufacturers. For this reason, the three pH points should be
calibrated as close to the buffer manufacturer's specified temperature as possible (usually
0ºC or 5ºC) although a variation of up to +/-10ºC makes very little difference in reality.
During pH measurement, temperature variation is automatically compensated for.
6.5. GPS Reception
The GPS version of the Aquameter® (AM- 00) contains a built-in GPS/GLONAS receiver
and antenna. The antenna is situated at the top of the case, just behind the Aquaread®
Logo. For optimum signal reception, the antenna must be able to ‘see’ a reasonably large
amount of the sky. The GPS receiver will not work indoors or when shielded from the
sky by any solid structure.
After switch-on, the GPS receiver will automatically start to search for satellites. During this
phase, the message GPS:Acquiring will be shown on the bottom line of all the screens. As
soon as three satellites are acquired, two dimensional position (no altitude) will be
calculated and the message GPS:2D POS will be shown on the bottom line of the screens.
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Once a fourth satellite is acquired, altitude will be calculated and GPS:3D POS will be
shown on the bottom line of the screens. With a good view of the sky, position should be
calculated within ninety seconds of switch-on. To see your geographic position and the
number of satellites in use, use the left or right arrow keys to scroll to the Position page.
If you switch the meter on indoors, then carry it outside after several minutes, there may be
a considerable delay in acquiring satellites. In this case, switch the meter off, then back on
again to reset the acquisition process.
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
7. Depth Measurement (Aquaprobes with a - D suffix only)
Depth is measured in the Aquaprobe® by a pressure sensor mounted inside the body of the
probe.
Depth is calculated by subtracting the barometric pressure being measured in the
Aquameter® from the water pressure being measured in the Aquaprobe®. The pressure
differential, once corrected for temperature and salinity (water density), is directly
proportional to depth.
The depth measurement system uses the EC sensor to detect when the probe has been
placed in water. All the time the probe is measuring an EC of zero, the depth will read zero.
As soon as an EC value is detected, the meter will start to calculate depth. For this
reason, it is important to ensure the Probe is connected to the Meter and switched
on prior to submerging the probe in water.
7.1. Taking Depth Measurements
Connect the Probe to the Meter and switch on prior to submerging the probe in water.
Select the Baro/Depth screen as illustrated below. The depth should be reading zero.
 BARO:101 mb
DEPTH:00.00m
Hit [OK] to zero
 GPS: D Pos 
If the depth is not reading zero (this is possible if the probe is wet and a low EC reading is
registering), press the OK key. You will be asked to confirm by pressing OK again.
Slowly lower the probe into the water. As soon as the depth value starts to register, you can
lower the probe more quickly.
7.2. Differential Depth Measurement
If you want to measure changes in depth, it may be more convenient to zero the depth
measurement once the probe has been submerged.
To do this, press the OK key whilst displaying depth, then confirm. The unit will now read
positive or negative changes in depth from the current depth (zero datum).
If the values are positive, the water level has increased from the zero datum. If the values
are negative, the water level has decreased.
Using the Automatic Data Logging feature detailed in the following section, it is possible to
monitor water levels over a period of time for later recall.
7.3. Depth Calibration
The depth sensor is automatically re-zeroed each time the DO 100% point is calibrated in
free air. The depth sensor is factory calibrated at two temperatures and two pressures and
vary rarely needs to be recalibrated during the lifetime of the Probe. If two point depth
calibration is required, it must be done using an AP-PC KIT and associated AquaCal PC
Software. Full depth calibration can not be performed using an Aquameter®.
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quaprobe® P-700, P-800 & P-2000 Instruction Manual 10401-00870 Rev R
8. Memory Mode
8.1. Manually Saving Readings
When you are happy that the readings are stable (see section 6.3: Global Stability
Indication), press the M+ key to snapshot the readings along with the time, date, GLP
(calibration) data and position (GPS models only).
As each reading is saved, a numeric memory location ‘Tag’ will be briefly displayed which
you can note down. This Tag can be used to identify readings at a later date, both on the
Aquameter® and when using AquaLink software.
8.2. Recalling and Viewing Saved Readings
To recall your readings, press the MR key. On entering Memory Recall mode, the most
recent Tag and set of readings are displayed first along with the date and time the readings
were taken shown on the bottom line of the screen.
M TEMP:012.5°C M
ORP:0415.2mV
pH:08.21
02/Apr/17 15:04:01
During Memory Recall, an ‘M’ is flashed in the top left and right corners of the screen
alternatively with an up/down arrow and a left/right arrow. This is to indicate that the Meter
is in Memory Recall mode and that other screens can be accessed using the arrow keys.
To see earlier readings, press the up arrow key. Just before each set of readings is
displayed, the Tag will be briefly displayed. To view all the parameters within one set of
readings, use the left/right arrow keys as described earlier. To exit Memory Recall mode,
press the ESC key. If no key is pressed for 30 seconds, Memory Recall mode will be
automatically cancelled.
8.3. Recalling GLP Data
Each time a set of readings is added to memory, the date of the last successful calibration
of each electrode is also appended. This is called GLP (Good Laboratory Practice) Data. In
addition to the date of the last successful EC calibration, the Calibration Standard value at
which the EC was calibrated is also displayed (see section 15: EC / Temperature Electrode
Calibration and Maintenance for further details).
To view the last successful calibration date for each electrode for any particular stored
reading, enter Memory Recall mode, scroll to the reading you are interested in using the
up/down keys, then press the MENU key. The screen below will be displayed.
GLP DATA
>pH/REDOX(ORP)
DO/EC
Aux Electrodes
Using the up/down keys, select the electrode you are interested in, then press either the
OK key or the right arrow key. If, for instance, you selected pH/REDOX(ORP), the screen
below would be displayed.
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