TPS Aqua-CPA User manual

Congratulations !
You have purchased the latest in Handheld Conductivity-TDS-Salinity-
pH-Temperature instrumentation. We trust that your new Aqua-CPA will
give you many years of reliable service.
The Aqua-CPA is a breeze to operate. This manual has been designed
to help you get started, and also contains some handy application tips. If
at any stage you require assistance, please contact either your local
TPS representative or the TPS factory in Brisbane.
The manual is divided into the following sections:
1. Table of Contents
Each major section of the handbook is clearly listed. Sub-sections
have also been included to enable you to find the information you
need at a glance.
2. Introduction
The introduction has a diagram and explanation of the display and
controls of the Aqua-CPA. It also contains a full listing of all of the
items that you should have received with your Aqua-CPA. Please
take the time to read this section, as it explains some of items that
are mentioned in subsequent sections.
3. Main Section
The main section of the handbook provides complete details of the
Aqua-CPA, including operating modes, calibration, troubleshooting,
specifications, and warranty terms.
4. Appendices
Appendices containing background information and application notes
are provided at the back of this manual.
Model Aqua
-
C
PA
Cond, TDS, Salinity,
pH, Temp. Meter
Version : 2.0
Date : 20/09/2011

Page
2
TPS Pty Ltd
ABN 30 009 773 371
Unit 6 / 253 Leitchs Road
Brendale, QLD,
Australia, 4500
Phone : [phone]
International : 61 7 32 058 027
Fax : [phone]
International : 61 7 3808 4871
Email : [email protected]
Web : www.tps.com.au

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Contents
1. Introduction .................................................................................................. 5
1.1 Aqua-CPA Display and Controls........................................................................ 5
1.2 Unpacking Information....................................................................................... 7
1.3 Specifications .................................................................................................... 8
2. Operating Modes........................................................................................ 10
2.1 Mode Selection................................................................................................ 10
2.2 Setting TDS Factor .......................................................................................... 10
2.3 Display Combination Selection ........................................................................ 11
3. Conductivity (TDS/Salinity) Calibration................................................... 13
3.1 Calibration Procedure...................................................................................... 13
3.2 Calibration Notes ............................................................................................. 15
3.3 Calibration Messages ...................................................................................... 15
4. pH Calibration ............................................................................................ 16
4.1 Calibration ....................................................................................................... 16
4.2 pH Calibration Notes ....................................................................................... 18
4.3 pH Calibration Messages................................................................................. 18
5. Temperature Calibration ........................................................................... 19
5.1 Calibration ....................................................................................................... 19
5.2 Calibration Notes ............................................................................................. 19
5.3 Calibration Messages ...................................................................................... 20
5.4 Manual Temperature Setting ........................................................................... 20
6. Selecting k=10 or k=0.1 sensor ................................................................ 21
7. Selecting Buffers for Auto Buffer Recognition....................................... 22
8. Battery......................................................................................................... 23
8.1 Battery Saver Function .................................................................................... 23
8.2 Changing the Battery....................................................................................... 24
9. Initialising the Aqua-CPA .......................................................................... 25
10. Troubleshooting..................................................................................... 26
10.1 General Error Messages.................................................................................. 26
10.2 Conductivity, TDS and Salinity Troubleshooting.............................................. 27
10.3 pH Troubleshooting ......................................................................................... 29
10.4 Temperature Troubleshooting ......................................................................... 30
11. Appendices............................................................................................. 31

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4
11.1 Care, Cleaning and Maintenance of Conductivity Sensors ............................. 31
11.2 Replatinising Conductivity Sensors ................................................................. 32
11.3 pH Sensor Fundamentals................................................................................ 33
11.4 Instrument software version number. .............................................................. 36
12. Warranty.................................................................................................. 37

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5
1. Introduction
1.1 Aqua-CPA Display and Controls

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6
 Display
24 character alpha-numeric display. The following combinations of
parameters can be displayed simultaneously…
Conductivity + pH + Temperature Conductivity + Temperature
TDS + pH + Temperature TDS + Temperature
Salinity + pH + Temperature Salinity + Temperature
pH + Temperature Temperature
A “Large Digit” mode nearly doubles the size of the digits (section 2).
User-friendly prompts and error messages are also provided.

Used to calibrate all parameters. See sections 3, 4 and 5.
Also used to select buffers for automatic buffer recognition. See
section 7.

Switches between Conductivity or TDS or Salinity, pH and
Temperature. See section 2.
Used to select k=10 or k=0.1 sensor at turn-on. See section 6.

Switches the Aqua-CPA on and off.
Hold this key for 3 seconds to invoke Battery Saver mode. See
section 8.
 and 
These keys toggle the Aqua-CPA between Large Display mode and
Dual Display mode. See section 2.
NOTE: The digits in Large Display mode are made by combining the
two rows of the display. This results in a small gap
approximately half way up the digits.

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1.2 Unpacking Information
Before using your new Aqua-CPA, please check that the following
accessories have been included:
Part No
1. Aqua-CPA Cond-TDS-Salinity-pH-Temperature, Auto-ranging 121135
2. k=1/ATC/Temperature Sensor, plastic body ............................ 122201
3. pH Sensor, plastic body........................................................... 121207
4. 2.76mS/cm Conductivity Standard, 200mL .............................. 122306
5. pH7.00 Buffer, 200mL.............................................................. 121387
6. pH4.01 Buffer, 200mL.............................................................. 121381
7. 9V Battery
8. Aqua-CPA Manual
Options that may have been ordered with your Aqua-CPA:
1. k=10/ATC/Temperature Sensor, plastic body .......................... 122221
2. k=0.1/ATC/Temperature Sensor, plastic body.......................... 122235
3. k=1/ATC/Temperature Sensor, glass body .............................. 122216
4. k=10/ATC/Temperature Sensor, glass body ............................ 122212
5. k=0.1/ATC/Temperature Sensor, glass body ........................... 122229
6. Aluminium Carry Case............................................................. 130057

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1.3 Specifications
Ranges Resolution
Accuracy
Conductivity
k=0.1 cell 0 to 2.000 µS/cm
0 to 20.00 µS/cm
0 to 200.0 µS/cm
0 to 2000 µS/cm
k=1 cell 0 to 20.00 µS/cm
0 to 200.0 µS/cm
0 to 2000 µS/cm
0 to 20.00 mS/cm
k=10 cell 0 to 200.0 µS/cm
0 to 2000 µS/cm
0 to 20.00 mS/cm
0 to 200.0 mS/cm
0.001µS/cm
0.01 µS/cm
0.1 µS/cm
1 µS/cm
0.01 µS/cm
0.1 µS/cm
1 µS/cm
0.01 mS/cm
0.1 µS/cm
1 µS/cm
0.01 mS/cm
0.1 mS/cm
±0.5% of full
scale of selected
range at 25
O
C
TDS
k=0.1 cell 0 to 1.000 ppM
0 to 10.00 ppM
0 to 100.0 ppM
0 to 1000 ppM
k=1 cell 0 to 10.00 ppM
0 to 100.0 ppM
0 to 1000 ppM
0 to 10.00 ppK
k=10 cell 0 to 100.0 ppM
0 to 1000 ppM
0 to 10.00 ppK
0 to 100.0 ppK
0.001ppM
0.01 ppM
1 ppM
0.01 ppK
0.01 ppM
0.1 ppM
1 ppM
0.01 ppK
0.1 ppM
1 ppM
0.01 ppK
0.1 ppK
±0.5% of full
scale of selected
range at 25
O
C
Salinity
k=0.1 cell 0 to 0.10 %
0 to 1.0 PSU
k=1 cell 0 to 1.19 %
0 to 11.9 PSU
k=10 cell 0 to 8.00 %
0 to 80.0 PSU
0.01 %
0.1 PSU
±0.5% of full
scale of selected
range at 25
O
C
pH
0 to 14.00 pH 0.01 pH ±0.01 pH
Temperature
-10.0 to 120.0
O
C
(Cond sensor limit 60
O
C)
0.1
O
C ±0.2
O
C

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Additional Conductivity/TDS/Salinity Specifications
Temperature Compensation.............. Automatic, -5 to 70.0
O
C
Conductivity Sensor Span Range...... 75 to 133 %
Auto Standard Recognition................ Cond : 150µS/cm, 1413µS/cm,
2.76mS/cm, 12.88mS/cm,
58.0mS/cm
TDS Factor........................................ 0.40 to 1.00 user selected
Additional pH Specifications
Temperature Compensation.............. Automatic, -5 to 100.0
O
C
pH Input Impedance.......................... >3 x 10
12
Ω
pH Asymmetry Range ....................... -1.00 to 1.00 pH
pH Slope Range................................ 85.0 to 105.0%
Auto pH Buffer Recognition ............... pH4.01, pH6.86, pH7.00, pH9.18,
pH10.01
Additional Temperature Specifications
Temperature Sensor Offset Range.... -10.0
o
C to +10.0
o
C
General Specifications
Display .............................................. 24 Character alphanumeric LCD,
with full text prompts and error
messages.
Power................................................ 9V Alkaline Battery for 70 hours
operation.
Battery Saver .................................... On: Auto switch-off after 5
minutes
Off: Continuous use
Dimensions ....................................... 165 x 85 x 35 mm
Mass ................................................. Instrument only : Approx 280g
Full Kit : Approx 2.0kg
Environment...................................... Temperature : 0 to 45
O
C
Humidity : 0 to 90 % R.H.

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2. Operating Modes
2.1 Mode Selection
To select Conductivity, TDS or Salinity modes…
1. Press the key until the Aqua-CPA is the mode selection menu.
For example…
Mode: Cond ↑
↑↑
↑↓
↓↓
↓
2. Press or to select the required from the following choices…
•Conductivity
•TDS
•Salinity
3. Press when the required display mode has been selected.
If TDS mode has been selected the user can now enter the TDS
Factor.
2.2 Setting TDS Factor
To set the TDS Factor…
1. Press the key until the Aqua-CPA is the mode selection menu.
Select the TDS Mode.
2. Press the key and the currently selected TDS Factor is
displayed. For example…
TDS Factor ↑
↑↑
↑.65↓
↓↓
↓
Press the key to increase the Factor.
Press the key to decrease the Factor.
Press the key when the desired value is displayed.
The new TDS Factor will be now displayed.
The TDS Factor can be set from 0.40 to 1.00.
The TDS Factor will be reset to 0.65 when the meter is initialized.