TPS 90-FL User manual

Congratulations !
The 90-FL is complete water quality logger in a single portable unit. It combines Dissolved
Oxygen, Conductivity, TDS, pH and Temperature.
Despite its impressive list of features, the 90-FL 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 90-FL. It
also contains a full listing of all of the items that you should have received with unit. 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 90-FL, 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.
TPS Pty Ltd
4 Jamberoo Street
Springwood, Brisbane,
Australia, 4127
Phone : [phone]
International : 61 7 32 900 400
Fax : [phone]
International : 61 7 3808 4871
E-mail : [email protected]
Web Site : www.tps.com.au
90-FL
Dissolved Oxygen,
Conductivity, TDS, pH,
Temperature Logger
Date :01-Feb-2001
Author :MS
Version :6.0

1
Contents
1. Introduction .......................................................................................................................................3
1.1 90-FL Display and Controls.............................................................................................................3
1.2 90-FL Rear Panel Connectors..........................................................................................................3
1.3 Menu and Function Keys.................................................................................................................4
1.4 Numeric Keys..................................................................................................................................4
1.5 Enter Key........................................................................................................................................4
1.6 Delete Key ...................................................................................................................................... 4
1.7 ON and OFF Keys...........................................................................................................................4
1.8 80 Character Display.......................................................................................................................4
1.9 Unpacking Information.................................................................................................................... 5
1.10 Specifications..............................................................................................................................6
2. 90-FL Menu Structure........................................................................................................................ 9
3. Dissolved Oxygen Mode.................................................................................................................. 10
3.1 Selecting Dissolved Oxygen Mode ................................................................................................ 10
3.2 Dissolved Oxygen Calibration ....................................................................................................... 10
3.3 Dissolved Oxygen Calibration Notes ............................................................................................. 13
3.4 Dissolved Oxygen Calibration Messages ....................................................................................... 13
3.5 Dissolved Oxygen Stirrer............................................................................................................... 14
4. Conductivity Mode........................................................................................................................... 15
4.1 Selecting Conductivity Mode......................................................................................................... 15
4.2 Setting the Conductivity calibration standard................................................................................. 15
4.3 Setting the Conductivity sensor k factor......................................................................................... 16
4.4 Conductivity Calibration................................................................................................................ 17
4.5 Conductivity Calibration Notes...................................................................................................... 18
4.6 Conductivity Calibration Messages................................................................................................ 18
5. TDS Mode......................................................................................................................................... 19
5.1 Selecting TDS Mode ..................................................................................................................... 19
5.2 Setting the TDS calibration standard.............................................................................................. 19
5.3 Setting the TDS sensor k factor...................................................................................................... 20
5.4 TDS Calibration ............................................................................................................................ 21
5.5 TDS Calibration Notes .................................................................................................................. 22
5.6 TDS Calibration Messages............................................................................................................. 22
6. pH Mode........................................................................................................................................... 23
6.1 Selecting the pH Buffer Set ........................................................................................................... 23
6.2 pH Calibration............................................................................................................................... 24
6.3 pH Calibration Notes..................................................................................................................... 25
6.4 pH Calibration Messages............................................................................................................... 26
7. Temperature Mode........................................................................................................................... 27
7.1 Temperature Calibration................................................................................................................ 27
7.2 Temperature Calibration Notes...................................................................................................... 28
7.3 Calibration Messages..................................................................................................................... 28
7.4 Manual Temperature Setting.......................................................................................................... 29
8. Good Laboratory Practices (GLP)................................................................................................... 30
8.1 To recall GLP information on the display ...................................................................................... 30
8.2 Failed Calibration.......................................................................................................................... 32
8.3 Printing GLP Information to the RS232 Port.................................................................................. 32
8.4 Instrument Serial Number.............................................................................................................. 33
8.5 Additional GLP Features............................................................................................................... 33

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9. Datalogging...................................................................................................................................... 34
9.1 Setting the A & B Data Input Function .......................................................................................... 34
9.2 Manually Recording Readings into the Logger............................................................................... 34
9.3 Automatic Datalogging.................................................................................................................. 37
9.4 Recalling Readings from the Logger.............................................................................................. 41
9.5 Erasing Records from the Logger................................................................................................... 42
9.6 Printing Records from the Logger to the RS232 Port...................................................................... 42
10. RS232 Port....................................................................................................................................... 43
10.1 Setting the Baud Rate................................................................................................................ 43
10.2 Sending Readings to the RS232 Port ......................................................................................... 43
10.3 RS232 Configuration................................................................................................................. 43
10.4 Communication and Statistical Software.................................................................................... 43
10.5 Commands................................................................................................................................ 43
10.6 Data Format .............................................................................................................................. 45
10.7 GLP Data Format...................................................................................................................... 46
10.8 Importing Data into Microsoft Excel.......................................................................................... 47
11. Setting the Clock ............................................................................................................................. 49
12. Initialising the 90-FL........................................................................................................................ 50
13. Instrument firmware version number ............................................................................................. 50
14. Battery Saver Function.................................................................................................................... 51
15. Moisture Protection......................................................................................................................... 52
15.1 Silica Gel Pack.......................................................................................................................... 52
15.2 Corrosion Inhibitor Tab............................................................................................................. 52
16. Troubleshooting .............................................................................................................................. 53
16.1 General Errors........................................................................................................................... 53
16.2 Dissolved Oxygen Troubleshooting........................................................................................... 54
16.3 Conductivity / TDS Troubleshooting......................................................................................... 55
16.4 pH Troubleshooting................................................................................................................... 56
16.5 Temperature Troubleshooting.................................................................................................... 57
17. Appendices...................................................................................................................................... 58
17.1 Dissolved Oxygen..................................................................................................................... 58
17.2 Conductivity/TDS..................................................................................................................... 61
17.3 pH............................................................................................................................................. 63
18. Warranty........................................................................................................................................... 67

3
1. Introduction
1.1 90-FL Display and Controls
1.2 90-FL Rear Panel Connectors

4
1.3 Menu and Function Keys
Press the to function keys to select desired options within the menu system.
Additionally, these keys perform the following function directly in normal measurement mode…
:Press to record readings into the Logger. See section 9.
:Press to start and stop the optional Dissolved Oxygen stirrer. See section 3.5.
:Press to transmit current reading plus date and time to the RS232 port. See section 10.2.
:Press to start automatic datalogging in the Sampling Period and Duration mode. See section
9.3.3.
:Press to obtain context-sensitive help messages. This function is disabled within menus.
1.4 Numeric Keys
Used to enter values during set-up and calibration. A negative sign and decimal point are provided.
1.5 Enter Key
Press the key to accept default values or those entered on the Numeric Keypad.
1.6 Delete Key
Press the key to make corrections to values entered on the Numeric Keypad.
1.7 ON and OFF Keys
Press the relevant key to switch the 90-FL on and off as required.
1.8 80 Character Display
80 character alphanumeric display with user-friendly menu and context-sensitive help system.
Shows Dissolved Oxygen, Conductivity/TDS, pH, Temperature, Date and Time simultaneously.

5
1.9 Unpacking Information
Before using your new 90-FL, please check that the following accessories have been included:
Part No
Standard Kit…
1. 90-FL Field Lab.....................................................126103
2. pH6.88 Buffer, 200mL...........................................121306
3. pH4.00 Buffer, 200mL...........................................121381
4. 2.76 mS/cm Conductivity Standard, 1 Litre............ 122305
5. Plug-Pack Power Supply........................................ 130009
6. 90-FL Handbook................................................... 130050
Sensors…
1. YSI Field type DO2sensor.....................................123204
2. 3m Cable for YSI Field DO2sensor .......................123215
3. 5m Cable for YSI Field DO2sensor .......................123219
4. 7.5m Cable for YSI Field DO2sensor ....................123216
5. 15m Cable for YSI Field DO2sensor .....................123217
6. YSI Non-stirring DO2sensor for BOD bottles........123214
7. YSI Self-stirring DO2sensor for BOD bottles ........123213
8. k=10/ATC/Temp Conductivity Sensor, 5m ............122218
9. k=1/ATC/Temp Conductivity Sensor, 5m.............. 122196
10. Submersible pH Sensor, Gel Filled, 5m..................111224
11. Intermediate Junction pH Sensor, 5m..................... 111227
12. Temperature Sensor, 5m ........................................124210
(not required when Conductivity sensor is in use)
Options…
1. PVC Sensor holder assembly, 5m s/s cable ............121343
2. Dissolved Oxygen stirrer, 5m.................................123306
3. Extended cable for sensors (order by the metre).....130040
4. RS232 Serial Interface Cable .................................130015
5. Communication software for Windows 3.1, ........... 130086
95, 98 and NT
6. Solar Panel.............................................................130012
7. Clip lead for external 12V DC battery....................130013
8. Hard Carry case for meter and accessories .............130058
Spares…
1. 7.2V NiCad Battery Pack.......................................130027
2. Senson®VapaguardTab corrosion inhibitor........NRP2
3. Membrane, Filling Solution and Zero DO2kit........123300

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1.10 Specifications
1.10.1 Dissolved Oxygen
Range Resolution Accuracy
0 to 32.00 ppM 0.01 ppM ±0.2% of full scale
0 to 320.0 % Saturation 0.1 % Saturation ±0.3 % Saturation
0 to 66.0 % Gaseous 0.1 % Gaseous ±0.1 % Gaseous
Note : Full scales are subject to sensor performance.
Sensor Type...........................................Clark type polarographic sensor with in-built ATC.
Salinity Correction for ppM.................0 to 50.0 ppK, automatic using conductivity/TDS reading.
Temperature Compensation.................Automatic for membrane permeability.
Automatic for Dissolved Oxygen solubility in ppM mode.
Calibration............................................Automatic zero and span calibration.
Sensor Span Range ...............................65 to 200 %
1.10.2 Conductivity
Ranges Resolution Accuracy
k=0.1 Sensor
0 to 2.000 µS/cm
0 to 20.00 µS/cm
0 to 200.0 µS/cm
0 to 2000 µS/cm
0.001 µS/cm
0.01 µS/cm
0.1 µS/cm
1 µS/cm
±0.5% of full scale of
selected range at 25 OC
k=1.0 Sensor
0 to 20.00 µS/cm
0 to 200.0 µS/cm
0 to 2000 µS/cm
0 to 20.00 mS/cm
0.01 µS/cm
0.1 µS/cm
1 µS/cm
0.01 mS/cm
±0.5% of full scale of
selected range at 25 OC
k=10 Sensor
0 to 200.0 µS/cm
0 to 2000 µS/cm
0 to 20.00 mS/cm
0 to 200.0 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 OC
Note : Ranges are automatically selected. Exact auto-ranging points and full scales are subject to
sensor performance.
Sensor Type...........................................Ryton®plastic body with two platinised platinum plates
with in-built ATC.
Temperature Compensation.................Automatic, 0 to 100 OC
(standard Conductivity sensor is limited to 60 OC)
Calibration............................................Automatic zero and span calibration
Sensor Span Range ...............................±25% of nominal k factor

7
1.10.3 TDS
Ranges Resolution Accuracy
k=0.1 Sensor
0 to 1.000 ppM
0 to 10.00 ppM
0 to 100.0 ppM
0 to 1000 ppM
0.001 ppM
0.01 ppM
0.1 ppM
1 ppM
±0.5% of full scale of
selected range at 25 OC
k=1.0 Sensor
0 to 10.00 ppM
0 to 100.0 ppM
0 to 1000 ppM
0 to 10.00 ppK
0.01 ppM
0.1 ppM
1 ppM
0.01 ppK
±0.5% of full scale of
selected range at 25 OC
k=10 Sensor
0 to 100.0 ppM
0 to 1000 ppM
0 to 10.00 ppK
0 to 100.0 ppK
0.1 ppM
1 ppM
0.01 ppK
0.1 ppK
±0.5% of full scale of
selected range at 25 OC
Note : Ranges are automatically selected. Exact auto-ranging points and full scales are subject to
sensor performance.
Sensor Type...........................................Ryton®plastic body with two platinised platinum plates
with in-built ATC.
Temperature Compensation.................Automatic, 0 to 100 OC
(standard Conductivity sensor is limited to 60 OC)
Calibration............................................Automatic zero and span calibration.
Sensor Span Range ...............................±25% of nominal k factor.
1.10.4 pH
Range Resolution Accuracy
0 to 14.00 pH 0.01 pH ±0.01 pH
Sensor Type...........................................Glass bulb pH sensor, combination or half cell.
Input Impedance...................................>3 x 1012 Ohms
Temperature Compensation.................Automatic, 0 to 100 OC
Calibration............................................Automatic asymmetry and slope calibration.
Automatic Buffer Recognition..............pH4.00, pH6.88, pH7.00, pH9.23 & pH10.06.
Any other can be entered during calibration.
Sensor Asymmetry Range ....................-1.00 to 1.00 pH
Sensor Slope Range...............................85.0 to 105.0 %

8
1.10.5 Temperature
Range Resolution Accuracy
-30.0 to 110.0 OC 0.1 OC ±0.2 OC
Note : When using Conductivity/TDS sensor for Temperature readout, sensor is limited to 60 OC.
Sensor Type...........................................Silicon transistor built into tip of Conductivity/TDS
sensor, or separate Temperature sensor if Conductivity /
TDS sensor is not in use.
Calibration............................................Automatic offset and span calibration
Sensor Offset Range..............................-15.0 to 15.0 OC
Sensor Span Range ...............................93 to 107 %
1.10.6 General Specifications
Memory.................................................2032 readings including date and time with A&B function
disabled.
1632 readings including date and time with A&B function
enabled.
Automatic Logging ...............................Rate per Day
1 to 288 readings per day.
Time of Day
1 to 12 discrete times of the day, in 24 hour format.
Sampling Period and Duration
One reading every 1 to 300 seconds for a duration of 1 to
720 minutes or continuous.
RS232 Port ............................................300, 9600 & 19200 baud.
8 bits, no parity, 1 stop bit, XON/XOFF Protocol.
Clock......................................................Calendar clock displays date, month, hours, minutes &
seconds. Year is Y2K compliant and is attached to all
stored data.
Good Laboratory Practices ..................Date, time and results of last calibration for all parameters
are stored. This information can be recalled or sent to the
RS232 port at any time.
Power.....................................................7.2V, 1300mAH NiCad battery built in.
Battery charger for country of destination is included.
Solar panel and external battery clip lead optionally
available.
Battery Saver ........................................Auto switch-off after 5 minutes or 1 hour. Battery saver
can be switched off to allow continuous use.
Dimensions............................................230 x 140 x 100 mm
Mass.......................................................Instrument only :Approx. 1.5 kg
Full Kit :Approx. 5.0 kg
Environment .........................................Temperature :0 to 45 OC
Humidity :0 to 90 % R.H.

9
2. 90-FL Menu Structure
A detailed breakdown of the menu system of the 90-FL is shown below. This diagram provides a
quick reference for the menu functions available for the 90-FL.
→F1:Calibrate →F1:Oxygen
F2:Conductivity
or: F2:TDS
F3:pH
F4:Temperature
→F2:Mode →F1:Oxygen →F1:ppm
F2:ppM (Sal)
F3:%Sat
F4:%Gas
F3:Conductivity
F4:TDS
→F3:Logger →F1:Recall
F2:Erase →F1:Erase All
F2:Erase Last
F3:Print Log
F4:Start
or: F4:Stop
F5:Program →F1:Rate per Day
F2:Time of Day
F3:Sampling Period
and Duration
→F4:Setup →F1:Standards →F1:Conductivity
F2:TDS
F3:pH Buffers
F2:GLP →F1:Recall
F3:Print
F4:Initialise Meter
F3:Set AB →F1:A=Pond,No B
F2:A=Pond,B=Data
F3:A=Data,NoB
F4:A&B=Data
F5:OFF
F4:k factor * →F1:k=.1 *
F2:k=1 *
F5:System →F1:Bat. Saver →F1:OFF
F2:5 minutes
F3:1 hour
F2:Set Clock
F3:Baud Rate →F1:300
F2:9600
F3:19200
F4:Stirrer Enable
or: F4:Stirrer Disable
* This function not available when a TPS k=10 sensor is connected.