Aquaread Aquaprobe AP-6000 User manual

Instruction Manual
for the
Aquaprobe® AP-6000 & AP-7000Mk2
Multiparameter Water uality Probe
and associated
Aquameter®, Utilities & Accessories
Aquameter® firmware Version 6.20 and Above
Aquaprobe® firmware Version 5.10 and Above
Document No. 10401-01668
Revision: B
Date: May 11, 2021
Aquaread® Ltd
Bridge House
Northdown Industrial Park
Broadstairs
Kent
CT10 3JP
ENGL ND
Phone: [phone]
www.aquaread.com

quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
PROPRI TARY NOTIC
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 0 1 Aquaread® Ltd. All rights
reserved.
SOFTWAR LIC NC AGR M NT
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.
R CYCLING
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 TR AT SUSP CT WAT R 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.
TRAD MARKS
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. StablCal® is a trademark of the HACH company
Aquaread ® Ltd has no affiliation with Microsoft Corporation, Google, Inc. or HACH
© 2021 quaread® Ltd. www.aquaread.com Page 2 of 145

quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
Table of Contents
1. INTRODUCTION...........................................................................................................................................................9
2. WHAT’S IN THE BOX?.................................................................................................................................................9
2.1. THE AQUAMETER® AND THE ENVIRONMENT......................................................................................................................9
2.2. THE AQUAPROBE® AND THE ENVIRONMENT.......................................................................................................................9
2.3. ABOUT THE PROBE SLEEVE AND SLEEVE END CAP...........................................................................................................10
2.4. TOP TIPS FOR SUCCESSFUL MEASUREMENTS USING OPTICAL ELECTRODES ................................................................................11
2.5. IMPORTANT NOTES REGARDING LONG-TERM DEPLO MENT ................................................................................................11
2.5.1. Important Notes Regarding Galvanic Corrosion.............................................................................................12
3. BATTERY INSTALLATION AND CARE.................................................................................................................13
3.1. CHOICE OF BATTER T PE............................................................................................................................................13
3.2. BATTER LIFE..............................................................................................................................................................13
3.3. BATTER CONDITION ICON.............................................................................................................................................13
3.4. BATTER SAVER FUNCTIONS..........................................................................................................................................13
4. OVERVIEW OF THE OPERATING SYSTEM.........................................................................................................14
4.1. INITIAL SWITCH ON, LANGUAGE AND CLOCK SETUP .........................................................................................................14
. CONNECTING AN AQUAPROBE®..........................................................................................................................1
5.1. AQUAPROBE® DEPLO MENT (SEE ALSO SECTIONS 2.5 AND 2.5.1)......................................................................................15
6. TAKING MEASUREMENTS......................................................................................................................................16
6.1. WHAT DOES IT ALL MEAN?.........................................................................................................................................17
6.2. TREND INDICATION.......................................................................................................................................................17
6.3. GLOBAL STABILIT INDICATION ......................................................................................................................................17
6.4. TEMPERATURE COMPENSATION.......................................................................................................................................18
6.5. GPS RECEPTION..........................................................................................................................................................19
7. DEPTH MEASUREMENT...........................................................................................................................................20
7.1. TAKING DEPTH MEASUREMENTS.....................................................................................................................................20
7.2. DIFFERENTIAL DEPTH MEASUREMENT..............................................................................................................................20
7.3. DEPTH CALIBRATION.....................................................................................................................................................20
8. MEMORY MODE.........................................................................................................................................................21
8.1. MANUALL SAVING READINGS.......................................................................................................................................21
8.2. RECALLING AND VIEWING SAVED READINGS....................................................................................................................21
8.3. RECALLING GLP DATA................................................................................................................................................21
8.4. CLEARING THE MEMOR ................................................................................................................................................22
8.5. AUTOMATIC DATA LOGGING ..........................................................................................................................................22
8.6. BATTER AND MEMOR DURATION IN LOW POWER LOGGING MODE ..................................................................................23
8.7. IMPORTANT INFORMATION ABOUT MEMOR MODE...........................................................................................................24
9. SETUP & INSTALL......................................................................................................................................................2
9.1. SETTING UNITS OF MEASUREMENT..................................................................................................................................25
9.2. AUX SOCKET ASSIGNMENT..........................................................................................................................................26
10. RAPIDCAL CALIBRATION METHOD..................................................................................................................28
10.1. ABOUT CALIBRATION..................................................................................................................................................28
10.2. SPECIAL NOTES CONCERNING ISE ELECTRODES.............................................................................................................28
10.3. USING RAPIDCAL.......................................................................................................................................................29
To Check / Calibrate the 100 Saturation Point in Damp Air................................................................................30
10.4. CALIBRATION ERROR MESSAGES...................................................................................................................................31
10.5. RESETTING TO FACTOR CALIBRATION DEFAULTS...........................................................................................................32
10.6. CALIBRATION REPORTS................................................................................................................................................32
10.7. CALIBRATION DATA STORAGE AND RETRIEVAL...............................................................................................................32
11. AFTER USE..................................................................................................................................................................34
12. THE AQUAPROBE® AUTOMATIC CLEANING SYSTEM................................................................................3
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quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
12.1. WIPER REMOVAL AND REPLACEMENT............................................................................................................................35
12.2. WIPER MOTOR REMOVAL AND REPLACEMENT................................................................................................................38
12.3. WIPER MECHANISM SPARE PARTS................................................................................................................................38
12.4. IMPORTANT NOTES REGARDING LONG-TERM DEPLO MENT ..............................................................................................39
13. PH/ORP ELECTRODE CALIBRATION AND MAINTENANCE........................................................................40
13.1. RECOGNISING THE PH/ORP ELECTRODE........................................................................................................................40
13.2. ELECTRODE REMOVAL AND REPLACEMENT.....................................................................................................................40
13.3. KEEPING THE ELECTRODES MOIST.................................................................................................................................40
13.4. CALIBRATING PH........................................................................................................................................................41
13.4.1. Special Notes Concerning ISE Electrodes during pH Calibration................................................................41
13.4.2. Calibrating the First Point (pH 7.00)............................................................................................................41
13.4.3. Calibrating the Second Point.........................................................................................................................43
13.4.4. Calibrating the Third Point............................................................................................................................43
13.5. ERRORS DURING CALIBRATION.....................................................................................................................................43
13.6. PH ELECTRODE EFFICIENC .........................................................................................................................................43
13.7. SERVICING THE PH ELECTRODE.....................................................................................................................................44
13.8. CALIBRATING ORP.....................................................................................................................................................44
13.9. CONVERTING ORP READINGS TO THE H DROGEN SCALE................................................................................................46
14. DO/EC ELECTRODE CALIBRATION AND MAINTENANCE..........................................................................47
14.1. RECOGNISING THE DO/EC ELECTRODE.........................................................................................................................47
14.2. DO MEASUREMENT TECHNIQUE...................................................................................................................................47
14.3. PRECAUTIONS DURING USE..........................................................................................................................................47
14.4. CALIBRATING THE DO/EC ELECTRODE.........................................................................................................................47
14.5. CALIBRATING THE DO ZERO POINT..............................................................................................................................47
14.6. CALIBRATING THE DO 100% SATURATION POINT IN MOIST AIR .....................................................................................49
14.7. REPLACING THE OPTICAL DO CAP...............................................................................................................................49
14.8. CALIBRATING EC.......................................................................................................................................................51
14.9. VERIF ING EC CALIBRATION.......................................................................................................................................53
14.10. ERRORS DURING CALIBRATION...................................................................................................................................53
14.11. CLEANING THE EC CONTACTS....................................................................................................................................53
14.12. CALIBRATING TEMPERATURE......................................................................................................................................54
1 . OPTIONAL OPTICAL ELECTRODES CALIBRATION AND MAINTENANCE............................................
15.1. TOP TIPS FOR SUCCESSFUL MEASUREMENTS USING OPTICAL ELECTRODES ..............................................................................56
15.2. OPTICAL ELECTRODE CALIBRATION SEQUENCE...............................................................................................................56
15.3. FLUORESCENT ELECTRODE GRAB SAMPLE CORRECTION FACTOR.......................................................................................56
15.4. 6000/7000-TURB TURBIDIT ELECTRODE..................................................................................................................57
15.4.1. About Turbidity..............................................................................................................................................57
15.4.2. Precautions During Use.................................................................................................................................57
15.4.3. Negative Turbidity Readings..........................................................................................................................58
15.4.4. Calibrating the Turbidity Electrode...............................................................................................................58
15.4.5. Calibration Points..........................................................................................................................................58
15.4.6. Turbidity Zero Point Calibration...................................................................................................................59
15.4.7. Verifying the Zero Calibration.......................................................................................................................60
15.4.8. Calibrating the Turbidity 20 NTU & 1000 NTU Points.................................................................................60
15.4.9. Errors During Calibration.............................................................................................................................61
15.4.10. Lens and Sleeve Maintenance......................................................................................................................61
15.4.11. References....................................................................................................................................................61
15.5. 6000/7000-BGA-PC FRESHWATER BLUE-GREEN ALGAE (PH COC ANIN) ELECTRODE .....................................................62
15.5.1. Principle of Operation...................................................................................................................................62
15.5.2. Limitations of Use..........................................................................................................................................62
15.5.3. Calibrating the BGA-PC Electrode................................................................................................................62
15.5.4. Calibration Solution Preparation..................................................................................................................63
15.5.5. Serial Dilution................................................................................................................................................63
15.5.6. Zero Point Calibration...................................................................................................................................64
15.5.7. Calibrating Point 2.........................................................................................................................................65
15.5.8. Calculating and Applying a Grab Sample Factor.........................................................................................65
15.5.9. Errors During Calibration.............................................................................................................................66
15.5.10. Lens and Sleeve Maintenance......................................................................................................................66
15.6. 6000/7000-BGA-PE SALTWATER BLUE-GREEN ALGAE (PH COER THRIN) ELECTRODE ...................................................67
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15.6.1. Principle of Operation...................................................................................................................................67
15.6.2. Limitations of Use..........................................................................................................................................67
15.6.3. Calibrating the BGA-PE Electrode................................................................................................................67
15.6.4. Calibration Solution Preparation..................................................................................................................68
15.6.5. Serial Dilution................................................................................................................................................68
15.6.6. Zero Point Calibration...................................................................................................................................69
15.6.7. Calibrating Point 2.........................................................................................................................................70
15.6.8. Calculating and Applying a Grab Sample Factor.........................................................................................70
15.6.9. Errors During Calibration.............................................................................................................................71
15.6.10. Lens and Sleeve Maintenance......................................................................................................................71
15.7. 6000/7000-CPH LL CHLOROPH LL ELECTRODE........................................................................................................72
15.7.1. Principle of Operation...................................................................................................................................72
15.7.2. Limitations of Use..........................................................................................................................................72
15.7.3. Calibrating the CPHYLL Electrode...............................................................................................................72
15.7.4. Calibration Solution Preparation..................................................................................................................73
15.7.5. Serial Dilution................................................................................................................................................73
15.7.6. Zero Point Calibration...................................................................................................................................74
15.7.7. Calibrating Point 2.........................................................................................................................................75
15.7.8. Calculating and Applying a Grab Sample Factor.........................................................................................75
15.7.9. Errors During Calibration.............................................................................................................................76
15.7.10. Lens and Sleeve Maintenance......................................................................................................................76
15.8. 6000/7000-RHOD RHODAMINE ELECTRODE...............................................................................................................77
15.8.1. Principle of Operation...................................................................................................................................77
15.8.2. Limitations of Use..........................................................................................................................................77
15.8.3. Calibrating the RHOD Electrode...................................................................................................................77
15.8.4. Calibration Solution Preparation..................................................................................................................77
15.8.5. Serial Dilution................................................................................................................................................78
15.8.6. Zero Point Calibration...................................................................................................................................78
15.8.7. Calibrating Point 2.........................................................................................................................................80
15.8.8. Grab Sample Factor.......................................................................................................................................80
15.8.9. Errors During Calibration.............................................................................................................................80
15.8.10. Lens and Sleeve Maintenance......................................................................................................................80
15.9. 6000/7000-FSCEIN FLUORESCEIN ELECTRODE...........................................................................................................81
15.9.1. Principle of Operation...................................................................................................................................81
15.9.2. Limitations of Use..........................................................................................................................................81
15.9.3. Calibrating the FSCEIN Electrode................................................................................................................81
15.9.4. Calibration Solution Preparation..................................................................................................................81
15.9.5. Serial Dilution................................................................................................................................................82
15.9.6. Zero Point Calibration...................................................................................................................................82
15.9.7. Calibrating Point 2.........................................................................................................................................84
15.9.8. Grab Sample Factor.......................................................................................................................................84
15.9.9. Errors During Calibration.............................................................................................................................84
15.9.10. Lens and Sleeve Maintenance......................................................................................................................84
15.10. 6000/7000-REFOIL REFINED OIL ELECTRODE.........................................................................................................85
15.10.1. Principle of Operation.................................................................................................................................85
15.10.2. Limitations of Use........................................................................................................................................85
15.10.3. Special Precautions When Using the REFOIL Electrode............................................................................86
15.10.4. Calibrating the REFOIL Electrode..............................................................................................................86
15.10.5. Calibration Solution Preparation................................................................................................................86
15.10.6. Serial Dilution..............................................................................................................................................86
15.10.7. Zero Point Calibration.................................................................................................................................87
15.10.8. Calibrating Point 2.......................................................................................................................................88
15.10.9. Calculating and Applying a Grab Sample Factor.......................................................................................89
15.10.10. Errors During Calibration.........................................................................................................................89
15.10.11. Lens and Sleeve Maintenance....................................................................................................................89
15.11. 6000/7000-CDOM/FDOM CHROMOPHORIC (FLUORESCENT) DISSOLVED ORGANIC MATTER.........................................91
15.11.1. Principle of Operation.................................................................................................................................91
15.11.2. Limitations of Use........................................................................................................................................91
15.11.3. Calibrating the CDOM Electrode................................................................................................................92
15.11.4. Calibration Solutions...................................................................................................................................92
15.11.5. Zero Point Calibration.................................................................................................................................92
15.11.6. Calibrating Point 2.......................................................................................................................................94
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quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
15.11.7. Calculating and Applying a Grab Sample Factor.......................................................................................94
15.11.8. Errors During Calibration...........................................................................................................................95
15.11.9. Lens and Sleeve Maintenance......................................................................................................................95
15.11.10. Special Note Concerning CDOM Calibration Solutions...........................................................................95
16. OPTIONAL ISE ELECTRODES CALIBRATION AND MAINTENANCE........................................................96
16.1. ISE ELECTRODE LIMITATIONS......................................................................................................................................96
16.2. CALIBRATION POINTS..................................................................................................................................................96
16.3. SPECIAL NOTES CONCERNING ISE ELECTRODES.............................................................................................................96
16.4. 6000/7000-AMM AMMONIUM/AMMONIA ELECTRODE..................................................................................................97
16.4.1. Ammonium Calibration Solution Preparation...............................................................................................97
16.4.2. Three-point Calibration.................................................................................................................................97
POINT 2.............................................................................................................................................................................99
POINT 3.............................................................................................................................................................................99
16.4.3. Two-point Calibration..................................................................................................................................100
16.4.4. Single-point Calibration...............................................................................................................................100
16.4.5. Errors During Calibration...........................................................................................................................100
16.5. 6000/7000-NIT NITRATE ELECTRODE......................................................................................................................101
16.5.1. Nitrate Calibration Solution Preparation....................................................................................................101
16.5.2. Three-point Calibration...............................................................................................................................101
POINT 2...........................................................................................................................................................................103
POINT 3...........................................................................................................................................................................103
16.5.3. Two-point Calibration..................................................................................................................................104
16.5.4. Single-point Calibration...............................................................................................................................104
16.5.5. Errors During Calibration...........................................................................................................................104
16.6. 6000/7000-CHL CHLORIDE ELECTRODE...................................................................................................................105
16.6.1. Chloride Calibration Solution Preparation.................................................................................................105
16.6.2. Three-point Calibration...............................................................................................................................105
POINT 2...........................................................................................................................................................................107
POINT 3...........................................................................................................................................................................107
16.6.3. Two-point Calibration..................................................................................................................................108
16.6.4. Single-point Calibration...............................................................................................................................108
16.6.5. Errors During Calibration...........................................................................................................................108
16.7. 6000/7000-CAL CALCIUM ELECTRODE....................................................................................................................109
16.7.1. Calcium Calibration Solution Preparation..................................................................................................109
16.7.2. Three-point Calibration...............................................................................................................................109
POINT 2...........................................................................................................................................................................111
POINT 3...........................................................................................................................................................................111
16.7.3. Two-point Calibration..................................................................................................................................112
16.7.4. Single-point Calibration...............................................................................................................................112
16.7.5. Errors During Calibration...........................................................................................................................112
16.8. 6000/7000-FLU FLUORIDE ELECTRODE....................................................................................................................113
16.8.1. Fluoride Calibration Solution Preparation.................................................................................................113
16.8.2. Three-point Calibration...............................................................................................................................114
POINT 2...........................................................................................................................................................................115
POINT 3...........................................................................................................................................................................115
16.8.3. Two-point Calibration..................................................................................................................................116
16.8.4. Single-point Calibration...............................................................................................................................116
16.8.5. Errors During Calibration...........................................................................................................................116
17. AQUALINK PC SOFTWARE..................................................................................................................................117
17.1. DOWNLOADING AQUALINK™ PC SOFTWARE FROM THE AQUAREAD® WEBSITE...............................................................117
17.2. SOFTWARE INSTALLATION..........................................................................................................................................117
17.3. DRIVER INSTALLATION...............................................................................................................................................117
17.4. RUNNING AQUALINK................................................................................................................................................117
17.5. UPLOADING DATA FROM OUR AQUAMETER®............................................................................................................118
17.6. DISPLA ING GPS CO-ORDINATES...............................................................................................................................118
17.7. ON SCREEN HELP.....................................................................................................................................................119
17.8. SAVING LOGGED DATA.............................................................................................................................................119
17.9. RETRIEVING LOGGED DATA.......................................................................................................................................119
17.10. EXPORTING DATA...................................................................................................................................................119
17.11. EXPORTING TEXT REPORTS......................................................................................................................................119
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quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
17.12. T PICAL TEXT REPORT COVER PAGE........................................................................................................................121
17.13. EXPORTING EXCEL® FILES......................................................................................................................................122
17.14. EXPORTING GOOGLE™ FILES...................................................................................................................................122
17.15. IMPORTING FILES INTO GOOGLE™ EARTH.................................................................................................................122
17.16. GOOGLE™ EXAMPLES.............................................................................................................................................123
18. LIMITED WARRANTY...........................................................................................................................................124
18.1. CLEANING PRIOR TO RETURN....................................................................................................................................124
18.2. DECONTAMINATION CERTIFICATE................................................................................................................................125
19. TROUBLESHOOTING.............................................................................................................................................126
20. DECLARATION OF CONFORMITY....................................................................................................................128
21. APPENDIX 1. THE TECH BEHIND AQUAREAD’S OPTICAL DO MEASUREMENT SYSTEM..............129
21.1. PRINCIPLE OF OPERATION...........................................................................................................................................129
21.2. SENSOR CAP LIFE.....................................................................................................................................................130
22. APPENDIX 2. FITTING AUX ELECTRODES.....................................................................................................131
22.1. SOCKET ASSIGNMENT AND CALIBRATION......................................................................................................................132
23. APPENDIX 3. STANDARD ELECTRODES DETAILED SPECIFICATION...................................................133
24. APPENDIX 4. OPTICAL ELECTRODES DETAILED SPECIFICATION AND FAQS..................................134
24.1. WHAT ARE THE EXCITATION AND DETECTION WAVELENGTHS?..........................................................................................134
24.2. HOW DOES THE REFINED OIL SENSOR WORK?...............................................................................................................134
24.3. I CAN SEE ALGAE IN THE WATER BUT M SENSOR IS GIVING LOW READINGS. WH ?.............................................................135
24.4. WHAT IS THE RANGE AND RESOLUTION OF THE OPTICAL ELECTRODES?...........................................................................135
24.5. WHAT IS THE ACCURAC OF THE OPTICAL ELECTRODES?...............................................................................................136
2 . APPENDIX 4. ISE ELECTRODES DETAILED SPECIFICATION...................................................................137
25.1. SPECIAL NOTES CONCERNING ISE ELECTRODES AND PH BUFFER SOLUTIONS...................................................................138
26. APPENDIX 7. TROUBLESHOOTING TURBIDITY...........................................................................................139
26.1. LENS AND SLEEVE MAINTENANCE...............................................................................................................................139
26.2. ABOUT TURBIDIT MEASUREMENT..............................................................................................................................140
26.3. PRECAUTIONS DURING USE........................................................................................................................................140
26.4. NEGATIVE TURBIDIT READINGS................................................................................................................................140
26.5. AERATION................................................................................................................................................................141
26.6. SENSOR SATURATION.................................................................................................................................................141
26.7. TOP TIPS FOR SUCCESSFUL MEASUREMENTS USING OPTICAL ELECTRODES............................................................................142
26.8. REFERENCES.............................................................................................................................................................143
27. APPENDIX 8. FLOW THROUGH CELL..............................................................................................................144
27.1. INTRODUCTION..........................................................................................................................................................144
27.2. SPIGOT INSTALLATION...............................................................................................................................................144
27.3. AP-6000 PREPARATION PRIOR TO USE.......................................................................................................................144
27.4. AP-6000 INSTALLATION INTO THE FLOWCELL..............................................................................................................145
27.5. AP-7000 INSTALLATION...........................................................................................................................................145
27.6. ZEROING OPTICAL ELECTRODES..................................................................................................................................145
27.7. OPERATION..............................................................................................................................................................145
27.8. CAUTION.................................................................................................................................................................145
27.9. CLEANING................................................................................................................................................................145
27.10. FLOWCELL TROUBLESHOOTING..................................................................................................................................146
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quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
1. Introduction
This manual covers the setup, operation, calibration and maintenance of the Aquaprobe®
AP-6000 & AP-7000Mk , Aquameter® V6. 0+ Meter, AquaLink V5.00+ PC software and
associated Aquaprobe® accessories. If your Aquameter® is 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.
•600mL of RapidCal Solution.
•Two part calibration / rinse cup.
•One mounting nut (pre-fitted).
•Mounting Bracket
To complete your system, you will also need an AP-5000/7000 Extension Cable, which
should be purchased separately.
2.1. The Aquameter® and the nvironment
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 nvironment
The Aquaprobes 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.
The Aquaprobes are manufactured predominantly from marine grade aluminium. When
installing an Aquaprobe®, it is important to recognise and avoid the possibility of creating a
situation where galvanic corrosion can occur. See section .5.1 Important Notes Regarding
Galvanic Corrosion for more details.
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quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
2.3. About the Probe Sleeve and Sleeve nd Cap
The Aquaprobes are 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, end cap and wiper form an
integral, working part of the Probe’s optical and C measurement system, and MUST
be fitted during calibration and measurement for correct operation.
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 Aquaprobes
are 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.
The image to the right represents a
section through the AP-6000
showing the mechanics of the
measurement chamber and
illustrates how the wiper, sleeve
and end cap all have an affect on
the physical characteristics of the
chamber. The AP-7000 is similar.
In order to obtain consistent results, the measurement chamber created within the
Aquaprobe® must remain physically constant during both calibration and
measurement. It is therefore essential that both the sleeve and sleeve end cap are
fitted during calibration and operation of all types of optical electrodes.
If an 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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2.4. Top Tips for successful measurements using optical electrodes
•Always keep the measurement chamber and electrode lenses clean.
•Always fit the wiper, 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 activate the self-cleaning mechanism.
•Always calibrate and zero the electrode as close to your sample temperature as
possible.
•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 electrode.
2.5. Important Notes Regarding Long-Term Deployment
Whilst the Aquaprobes feature an effective electrode cleaning system, the Probes should
not be deployed and left for extended periods without regular checking, calibration and
maintenance.
The time period between maintenance visits depends heavily upon the deployment
conditions. For example, if the Probe is deployed in clean water, the only necessity should
be regular single point calibration of the electrodes. This should be done every 4 – 6
weeks.
If the Probe is deployed in water that is polluted, silt-laden or heavily affected by algal
growth, maintenance visits should be much more frequent.
It is very important to keep the cleaning brushes in good condition. The brushes should be
replaced as soon as they show any signs of clogging or deterioration.
Likewise, it is very important to keep the inside of the Probe Sleeve and End Cap clean and
free from any build up of algae or silt.
The Wiper, Probe Sleeve and End Cap all form an integral part of the optical measurement
system. If they are allowed to become excessively dirty, the accuracy of your readings will
be affected.
It is strongly recommended that after initial deployment, maintenance visits are made on a
weekly basis in order to assess the rate of fouling. After several weeks, it should be
possible to establish the optimum time interval for routine maintenance at any given site.
All ion selective electrodes (ISE) exhibit calibration drift over time (around 3% per week).
Drift should not be a major problem where the electrodes can be frequently calibrated.
Also remember, in order to achieve accurate readings with ISE electrodes, the Probe
needs to be placed in flowing water with a minimum flow rate of 0.3m/s over the electrode.
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If there is no water flow across an ISE electrode, the ions in the immediate area of the
electrode will be depleted and the readings will start to fall.
During long term deployment of ion selective electrodes, the user should obtain grab
samples during the course of the deployment for analysis in the laboratory by chemical
means and use the results to apply post calibration to the recorded results.
2.5.1. Important Notes Regarding Galvanic Corrosion
Galvanic corrosion, sometimes also known as bimetallic corrosion, is an electrochemical
process in which one metal corrodes preferentially when it is in close proximity or in contact
with a dissimilar metal in the presence of an electrolyte (such as water). A similar galvanic
reaction is exploited in batteries to generate an electrical voltage.
When installing any model Aquaprobe®, it is important to recognise and avoid the
possibility of creating a situation where galvanic corrosion can occur.
The Aquaprobes are made primarily from hard-galvanised marine grade aluminium. This is
the same material used to manufacture aluminium boats hulls. All the time that the
aluminium body of the Aquaprobe® is insulated from any other type of metal, there should
be no problem with corrosion (unless the Probe is placed in strong acids or alkalis, for
which it is not designed).
Corrosion problems can occur if the Aquaprobe® is mounted near to, or in contact with a
dissimilar metal, such as steel. Typical examples of this are mounting the Probe inside a
steel pipe or suspending it on a steel wire. In these situations, a steel-aluminium battery is
created that will generate a voltage of around 0.5V and lead to the corrosion of the metal
with the lower potential, in this case the aluminium of the Aquaprobe®.
It is important to avoid creating a situation where galvanic corrosion can occur in
your installation. The easiest way to do this is by electrically insulating the Aquaprobe®
from the supporting structure. This can be done by suspending the Aquaprobe on a Mylar
or Nylon rope rather than a conductive steel wire.
If the Aquaprobe is to be mounted inside a steel pipe, wrap a good thickness of electrical
insulation tape around the top and bottom of the Probe to form ‘fenders’ in order to prevent
the Probe making physical contact with the inside of the pipe. When doing this, ensure that
you do not block any of the holes in the Probe’s sleeve, which are essential for water flow
and correct operation of the Probe.
In addition to the insulation described above, a sacrificial anode must be attached to the
Aquaprobe®. Sacrificial anodes are manufactured from zinc and are designed to slide onto
the threaded connector section of the Aquaprobe® and to be held on by the mounting nut.
Zinc is much more active than aluminium and will therefore corrode first leaving the
Aquaprobe® undamaged.
Sacrificial anodes are, as the name suggest, sacrificial, so will need replacing periodically.
Sacrificial anodes are available for the AP-6000 and AP-7000. Please contact your
Aquaread dealer and order part number SA-7000.
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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
Good quality alkaline batteries must be used. Never use rechargeable batteries as they do
not provide enough voltage to power the Aquaprobe's cleaning system.
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 up to 15 hours use in the AM- 00 GPS Aquameter ®
when used in conjunction with the AP-6000 and AP-7000. 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 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.
3.4. 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 SC key.
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quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
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 M NU 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 SC (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 M NU key.
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5. Connecting an Aquaprobe®
The Aquaprobes are designed to connect to the Aquameter® using an AP-5000/7000
Extension Cable. The AP-5000/7000 Extension Cable features high-pressure metal
connectors, which incorporate several O-ring seals at the Probe end. Prior to first
connection, the O-ring 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 Aquaprobe®, align the white dot on the Aquaprobe®
with the ◄AQUAR AD logo on the plug body, then press the plug into the socket and
tighten the retaining collar fully. Once the Probe has been connected to the Extension
Cable, the Aquameter® can be connected.
Always ensure the Aquameter® is switched off prior to connecting or disconnecting a Probe.
Align the ◄AQUAR AD 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 pressing
the red on/off switch. The Aquameter® should detect the Probe and start displaying
readings.
5.1. Aquaprobe® Deployment (See also sections 2.5 and 2.5.1)
When you are ready to deploy the Aquaprobe®, remove the mounting nut, fit the mounting
bracket then replace and tighten the mounting nut. If you are fitting a sacrificial anode, it
should be fitted between the Probe and the bracket.
During deployment, the Aquaprobe® should not be suspended by the Extension Cable. A
non-conductive Mylar or Nylon chord should be attached to the mounting bracket and be
used to support the weight of the Aquaprobe®.
Deploying the Aquaprobe® on a conductive cable (such as stainless steel) is not
recommended as this can lead to galvanic corrosion.
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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 thread will make fitting and removal of the Cap easier.
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/Aquaprobe® 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 
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quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
 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/Aquaprobe®
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.
Prefix Meaning Units
TEMP Probe Temperature C or F*
pH pH (Acidity/Alkalinity) pH or pHmV*
ORP Oxidation Reduction Potential mV
GPS GPS Status See section 6.5
DO Dissolved Oxygen %Sat & mg/L
EC Electrical Conductivity µS/cm or mS/cm†
TDS Total Dissolved Solids mg/L or g/l†
SAL Salinity PSU or ppt*
SSG Sea Water Specific Gravity σt
BARO Barometric Pressure mb or mmHg*
DEPTH Depth above / below zero datum Meters / Feet*
Lat Latitude Degrees & Mins
Long Longitude Degrees & Mins
Alt Altitude above Sea Level Meters or Feet*
Items in the Units column marked with an asterisk (*) can be selected as alternative units of
measurement in the Settings Menu (see section 9). 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 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.
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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.
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 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.
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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.
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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7. Depth Measurement
Depth is measured in the Aquaprobe® by a pressure sensor mounted inside the body of
the probe. The datum on the probe for depth measurement is the top row of holes on the
probe sleeve.
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. No
further calibration is required for the lifetime of the sensor.
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quaprobe® P-6000 & P-7000Mk2 Instruction Manual 10401-01668 Rev B
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 SC 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 14: Calibrating EC 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 M NU 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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