TPS WP-82 User manual

Congratulations !
You have purchased the latest in Handheld Dissolved Oxygen-
Temperature instrumentation. We trust that your new WP-82 will give you
many years of reliable service.
The WP-82 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 WP-82. It also contains a full listing of all of the items
that you should have received with your WP-82. 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
WP-82, 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 : www.tps.com.au WP-82 & WP-82Y
Dissolved Oxygen -
Temp Meter
Version : 1.4
Date : 05-Dec-2005
Author : AB

Page 2 Contents
1. Introduction.......................................................................................4
1.1 WP-82 Display and Controls..................................................................4
1.2 Unpacking Information...........................................................................6
1.3 Specifications.........................................................................................8
2. WP-82 Menu Structure....................................................................10
3. Operating Modes.............................................................................11
4. Dissolved Oxygen Calibration.......................................................12
4.1 Calibration Procedure..........................................................................12
4.2 Calibration & Measurement Notes.......................................................13
4.3 Calibration Messages ..........................................................................14
5. Temperature Calibration ................................................................15
5.1 Calibration Procedure..........................................................................15
5.2 Calibration Notes .................................................................................16
5.3 Calibration Messages ..........................................................................16
6. Salinity Correction..........................................................................17
7. Altitude or Atmospheric Pressure Correction .............................18
7.1 Selecting Altitude or Pressure Correction............................................18
7.2 Changing the Altitude or Pressure Correction value ...........................19
7.3 Notes....................................................................................................19
8. Good Laboratory Practices (GLP).................................................20
8.1 To recall GLP information on the display.............................................20
8.2 Failed Calibration.................................................................................22
8.3 Printing GLP Information to the RS232 Port........................................22
8.4 Instrument Serial Number....................................................................23
8.5 Additional GLP Features......................................................................23
9. Notepad Function ...........................................................................24
9.1 Recording Readings into the Notepad.................................................24
9.2 Recalling Records from the Notepad...................................................24
9.3 Erasing Records from the Notepad .....................................................25
9.4 Printing Records from the Notepad to the RS232 Port........................25
10. Automatic Datalogging...............................................................26
11. RS232 Port...................................................................................28
11.1 Setting the Baud Rate......................................................................28
11.2 Sending Readings to the RS232 Port..............................................28
11.3 RS232 Configuration........................................................................28
11.4 Communication and Statistical Software.........................................28

Page 3
11.5 Commands.......................................................................................29
11.6 Data Format..................................................................................... 30
11.7 GLP Data Format............................................................................. 31
11.8 Importing Data into Microsoft Excel................................................. 32
12. Battery Saver Function ..............................................................34
13. Recharging the Battery..............................................................35
14. Clock Function............................................................................ 36
14.1 Setting the Clock.............................................................................. 36
14.2 Displaying or Hiding the Clock......................................................... 36
15. Initialising the WP-82.................................................................. 37
16. Instrument firmware version number....................................... 37
17. Troubleshooting .........................................................................38
17.1 General Errors ................................................................................. 38
17.2 Dissolved Oxygen Troubleshooting................................................. 39
17.3 Temperature Troubleshooting ......................................................... 39
18. Dissolved Oxygen Sensor Fundamentals................................ 40
18.1 Operating Principle .......................................................................... 40
18.2 Probe Storage.................................................................................. 41
18.3 Notes On Units Of Dissolved Oxygen.............................................. 42
18.4 Equilibrium Conditions..................................................................... 43
18.5 Velocity Past The Membrane........................................................... 44
19. Warranty......................................................................................45

Page 4
1. Introduction
1.1 WP-82 Display and Controls

Page 5
Press to record readings into memory. See section 9.1.
Also used to switch the Altitude or Atmospheric Pressure Correction
system on or off. See section 7.1.
Press to show or hide the date, time and Altitude or Pressure. See
section 14.2.
Press to start or stop automatic logging. See section 10.
Alternatively, press to transmit current reading plus date and time to
the RS232 port. See section 11.2.
Only used within the menu system on the WP-82.
Press to access the user-friendly menu system which makes the
WP-82 easy to operate.
and
The and keys are used for calibrating temperature readout
(section 5.1), setting the clock (section 14.1), setting the automatic
logging period (section 10), and displaying GLP information (section
8.1).
The key is also used to initialise the WP-82 at turn-on. See
section 15.
Switches the WP-82 on and off.
Display
32 character alpha-numeric display with user-friendly menu and
prompting system. Shows Dissolved Oxygen, Temperature
simultaneously. Date, time, manual salinity value, altitude or pressure
can also be displayed.

Page 6
1.2 Unpacking Information
Before using your new WP-82, please check that the following
accessories have been included:
1.2.1 WP-82
Part No
1. WP-82 Dissolved Oxygen-Temperature Instrument ................123147
2. Battery charger.........................................................................130037
3. WP-82 / WP-82Y Handbook ....................................................130050
Options that may have been ordered with your WP-82:
1. ED1 Dissolved Oxygen-Temperature Sensor (no cable).........123400
2. 1m Detachable cable for ED1..................................................123228
3. 3m Detachable cable for ED1..................................................123230
4. 5m Detachable cable for ED1..................................................123232
5. RS232 Serial Interface Cable...................................................130041
6. WinTPS Communication Software for Windows 95 & Later ....130086
7. USB to Serial Adaptor (requires 130041 also).........................130087
8. Hard Carry Case......................................................................130059
9. Battery charger lead for 12V cigarette lighter socket...............130046
10. Solar Panel...............................................................................130012
11. Charger cable with clips for external 12V battery.....................130052
Other spares:
1. 6V NiMH Rechargeable Battery..............................................130038

Page 7
1.2.2 WP-82Y
Part No
1. WP-82Y Dissolved Oxygen-Temperature Instrument .............123148
2. Battery charger........................................................................ 130037
3. WP-82 / WP-82Y Handbook.................................................... 130050
Options that may have been ordered with your WP-82Y:
1. YSI Dissolved Oxygen-Temperature Sensor...........................123204
2. 1m Cable for YSI DO2Sensor................................................. 123212
3. 3m Cable for YSI DO2Sensor................................................. 123221
4. 5m Cable for YSI DO2Sensor................................................. 123222
5. RS232 Serial Interface Option (includes cable)....................... 130039
6. WinTPS Communication Software for Windows 95 & Later....130086
7. USB to Serial Adaptor (required 130039 also)........................ 130087
8. Hard Carry Case...................................................................... 130059
9. Battery charger lead for 12V cigarette lighter socket............... 130046
10. Solar Panel.............................................................................. 130012
11. Charger cable with clips for external 12V battery.................... 130052
Other spares:
1. 6V NiMH Rechargeable Battery ..............................................130038
2. RS232 Interface Cable............................................................130041

Page 8
1.3 Specifications
ppM (mg/L)
Ranges *..................................... 0 to 20.00 ppM (ED1 and YSI sensors)
20.0 to 40.0 ppM (YSI sensor only)
Resolution..................................0.01 & 0.1 ppM
Accuracy....................................±0.2% of full scale of selected range
% Saturation
Ranges *..................................... 0 to 240.0 % Saturation (ED1 and
YSI sensors)
240 to 450 % Saturation (YSI sensor
only)
Resolution..................................0.1 & 1 % Saturation
Accuracy....................................±0.3 % Saturation
% Gaseous
Ranges *..................................... 0 to 45.0 % Gaseous (ED1 and
YSI sensors)
45 to 100 % Gaseous (YSI sensor only)
Resolution..................................0.1 & 1 % Gaseous
Accuracy....................................±0.1 % Gaseous
* Ranges subject to sensor performance. Automatic range selection for
YSI sensor.
Temperature
Range.........................................-10.0 to 120.0 oC (Sensor limit 50 oC)
Resolution..................................0.1 oC
Accuracy....................................±0.2 oC
Salinity Correction....................User-set, from 0 to 50.0 ppK NaCl
Barometric Pressure Correction.....User-set, from 800 to 1100 HPa
Altitude Correction.................... User-set, from 0 to 5000m

Page 9
General Specifications
Temperature Compensation........Dual automatic temperature
compensation system.
DO2Sensor Span Range ............WP82 : 70 to 160%
WP82-Y : 65 to 200%
DO2Sensor Zero Range .............0 to 7.5%
Temp. Sensor Offset Range........-10.0oC to +10.0oC
Automatic Calibration ..................Zero in Sodium Sulphite (Na2SO3)
Solution Span in Air.
Memory........................................2400 readings including date and time
Automatic Logging.......................User-set for one reading every 1 to 90
seconds, Minutes or Hours.
RS232 Output .............................300, 1200 9600 & 19200 baud.
8 bits, no parity, 1 stop bit, XON/XOFF
Protocol.
Clock ...........................................Calendar clock displays date, month,
hours, minutes & seconds.
Year is recorded in memory and
transmitted to the RS232 port, but is not
displayed.
Battery Saver...............................On : Auto switch-off after 5 minutes
Off : Continuous use
Bar Graph display of battery charge
level.
Readout of battery voltage available for
troubleshooting.
Good Laboratory Practices..........Date, Time and Value of last Dissolved
Oxygen and Temperature calibration
are stored, along with Altitude or
Pressure setting at time of calibration.
This information can be recalled or sent
to the RS232 port at any time.
Power ..........................................6V NiMH Rechargeable Battery for
approx 75 hours operation.
Dimensions..................................187 x 110 x 51 mm
Mass............................................Instrument only : Approx 440g
Full Kit : Approx 1.5kg
Environment ................................Temperature : 0 to 45 oC
Humidity : 0 to 90 % R.H.

Page 10
2. WP-82 Menu Structure
A detailed breakdown of the menu system of the WP-82 is shown below.
This diagram provides a quick reference for the menu functions available
for the WP-82.
→F1:Cal. →F1:Oxy
F2:Temp
F3:Sal (if ppM-Sal mode selected)
F4:Altitude
or: F4:Pressure (if one or the other is
selected)
→F2:Notepad →F1:Recall
F2:Erase
F3:Print
F4:Prog. →F1:Min
F2:Sec
F3:Hr
↑↓:Set Period
→F3:Mode →F1:ppM-Sal
F2ppM
F3:% Sat
F4:% Gas
→F4:Setup →F1:Batt →F1:OFF
(Disable Battery
Saver)
F2:ON
(Enable Battery
Saver)
F2:Clock
F3:GLP →F1:Recall
F3:Print
F4:Baud →F1:300
F2:1200
F3:9600
F4:19200

Page 11
3. Operating Modes
The WP-82 has four operating modes : Salinity-corrected ppM,
uncorrected ppM, % Saturation, and % Gaseous.
To select a mode…
1. Select the Mode menu ( →F3:Mode)…
F1:ppM-Sal F2:ppM
F3:%Sat F4:%Gas
2. Press to select Salinity-corrected ppM mode.
Press to select ppM mode with no salinity correction.
Press to select % Saturation mode.
Press to select % Gaseous mode.

Page 12
4. Dissolved Oxygen Calibration
4.1 Calibration Procedure
1. Plug the Dissolved Oxygen sensor into the Sensor socket.
2. Switch the meter on.
3. Select the mode of your choice, as per section 3.
4. Ensure that temperature has already been calibrated (see section
5.1).
NOTE: A “ ∗“ in place of the decimal point in the temperature readout
indicates that temperature is not calibrated.
5. Rinse the Dissolved Oxygen sensor in distilled water and blot dry.
6. Zero Calibration
(a) Place the sensor into an oxygen-free solution. This solution may
be prepared by dissolving 2g of Sodium Sulphite in 100mL of
distilled water. A 50g bottle of Sodium Sulphite powder is
supplied with a new ED1 sensor for this purpose (part number
123302).
(b) Allow the reading to stabilise at or near zero. This may take 2-3
minutes.
(c) Select Oxygen Calibration. ( →F1:Cal. →F1:Oxy)
(d) Press the key to calibrate.
(e) A “ ∗” will not be removed from the display after a Zero
Calibration.
7. Rinse the Dissolved Oxygen sensor in distilled water and blot dry.
8. Air Calibration
(a) Hang the Dissolved Oxygen sensor in air. The tip of the sensor
should be pointing downwards.
(b) Allow the reading to stabilise. After a zero calibration, this may
take up to 5 minutes.
(c) Select Oxygen Calibration. ( →F1:Cal. →F1:Oxy)
(d) Press the key to calibrate.
(e) A “ ∗” in the display will be replaced by a decimal point after a
successful air calibration.
9. The WP-82 is now calibrated and is ready for use.

Page 13
4.2 Calibration & Measurement Notes
1. When taking sample measurements, always ensure that there is
adequate flow of solution past the membrane for accurate, stable
readings. See section 18.5.
2. If salinity-corrected ppM Dissolved Oxygen readings are required, set
the salinity correction value before taking sample measurements.
See section 6.
3. If Altitude or Atmospheric Pressure Correction is selected, set the
correction value before calibrating and taking measurements. See
section 7.
4. A zero calibration should be performed at least monthly. In
applications where there is a low level of dissolved oxygen, a zero
calibration may have to be done weekly.
5. An air calibration should be performed at least weekly. Of course,
more frequent calibration will result in greater confidence in results.
6. The salinity correction value is ignored during zero and air calibration.
There is therefore no need to re-set the salinity correction value when
calibrating Dissolved Oxygen.
7. For optimum accuracy, set the altitude of atmospheric pressure
before calibration.
8. All calibration information is retained in memory when the WP-82 is
switched off, even when the battery is removed. This information can
be recalled or printed later using the GLP function (see section 8).

Page 14
4.3 Calibration Messages
1. If a Zero calibration has been successfully performed, the WP-82 will
display the following message, and the zero value of the sensor. For
example…
Zero Cal. OK
Zero= 1.0%
2. If an Air calibration has been successfully performed, the WP-82 will
display the following message, and the span value of the sensor. For
example…
Air Cal. OK
Span=100.0%
3. If an Air calibration has failed, the WP-82 will display the following
message, and the failed span value of the sensor. For example…
Air Cal. Fail
Span= 65.0% or: Air Cal. Fail Span=140.0%

Page 15
5. Temperature Calibration
5.1 Calibration Procedure
1. Plug the Dissolved Oxygen/Temperature sensor into the Sensor
socket.
2. Switch the meter on.
3. Place the sensor into a beaker of room temperature water, alongside
a good quality mercury thermometer. Stir the sensor and the
thermometer gently to ensure an even temperature throughout the
beaker.
4. Select Temperature Calibration. ( →F1:Cal. →F2:Temp).
5. The reading from the probe is now displayed on the right of the
display, and the value you are going to set is shown on the left.
> 25.0< 24*0oc
↑↓:Set F1:Cal.
6. When the reading on the right has stabilised, press the or
keys until the reading on the left shows the same temperature as the
mercury thermometer.
7. Press the key to calibrate the temperature readout.
The ∗will now be replaced by a decimal point, if calibration was
successful.
Alternatively, press the key to abort temperature calibration.

Page 16
5.2 Calibration Notes
1. Temperature calibration information is retained in memory when the
WP-82 is switched off, even when the battery is removed. This
information can be recalled or printed later using the GLP function
(see section 8).
2. Temperature does not need to be recalibrated unless the sensor is
replaced or the meter is initialised.
5.3 Calibration Messages
1. If a temperature calibration has been successfully performed, the
WP-82 will display the following message and the offset value of the
probe. For example…
Calibrate OK
Offset= 1.0oc
2. If a temperature calibration has failed, the WP-82 will display the
following message, and the failed offset value of the probe. For
example…
Calibrate Fail
Offset= 10.5oc

Page 17
6. Salinity Correction
Manual salinity correction for ppM Dissolved Oxygen readings is available
on the WP-82.
1. Select Salinity-corrected ppM mode (section 3).
2. Select the Salinity correction calibration ( →F1:Cal. →F3:Sal).
3. The current salinity correction value is now displayed. For example…
> 36.0< ppK Sal.
↑↓:Set F1:Save
Press the and keys until the display shows the desired salinity
correction value.
4. Press the key to save the salinity correction value.
Alternatively, press the key to quit and retain the current setting.

Page 18
7. Altitude or Atmospheric Pressure Correction
Manual altitude or atmospheric pressure correction are available on the
WP-82. Either one or the other may be selected at any one time or the
system can be switched off.
7.1 Selecting Altitude or Pressure Correction
1. Switch the WP-82 off.
2. Press and hold the key while switching the WP-82 back on.
3. The Altitude or Pressure mode menu is now displayed…
F1:Altitude
F3:Pressure >F4:OFF
The arrow indicates the current selection.
4. Press to select Altitude correction.
Press to select Atmospheric Pressure correction.
Press to switch the Altitude or Pressure correction system OFF.
5. If or was selected, then the WP-82 now asks for the altitude or
pressure.
> 0< m Alt
↑↓:Set F1:Save or: >1013< HPa
↑↓:Set F1: Save
Press the and keys to set the desired Altitude or Pressure.
6. Press the key to save the Altitude or Pressure value.
Alternatively, press the key to quit and retain the current setting.

Page 19
7.2 Changing the Altitude or Pressure Correction value
To change the altitude or atmospheric pressure correction value when
one or the other is switched on…
1. Switch the WP-82 on.
2. Select Altitude or Pressure calibration, depending upon which is
switched on..
i.e. : →F1:Cal. →F4:Altitude
or : →F1:Cal. →F4:Pressure
3. The WP-82 now asks for the altitude or pressure.
> 0< m Alt
↑↓:Set F1:Save or: >1013< HPa
↑↓:Set F1: Save
Press the and keys to set the desired Altitude or Pressure.
4. Press the key to save the Altitude or Pressure value.
Alternatively, press the key to quit and retain the current setting.
7.3 Notes
1. For optimum accuracy, the altitude or pressure should be set before
calibrating or taking measurements.
2. When the altitude or atmospheric pressure correction system is
switched off, the WP-82 assumes sea level (0m) and 1013 HPa
conditions. These values are satisfactory for the precision required
for most Dissolved Oxygen measurements.
3. If Altitude correction is switched on, an “A” is added to the WP-82
display in normal measurement mode.
4. If Atmospheric Pressure correction is switched on, a “P” is added to
the WP-82 display in normal measurement mode.
5. % Saturation and % Gaseous readings are normalised to sea level
(0m) and 1013HPa, when altitude or atmospheric pressure
compensation is in use.
6. ppM and salinity-corrected ppM modes show the actual oxygen
present at the user-set altitude or atmospheric pressure.

Page 20
8. Good Laboratory Practices (GLP)
The WP-82 keeps a record of the date and time of the last Dissolved
Oxygen and Temperature calibrations as part of GLP guidelines.
8.1 To recall GLP information on the display
1. Switch the meter on.
2. Select the GLP menu ( →F4:Setup →F3:GLP).
3. Select F1:Recall from the menu.
4. The instrument model, firmware version number, and instrument
serial number are displayed, along with a prompt describing how to
scroll through the GLP information. For example…
WP82 V1.4 S1234
↓:More ↑:Back or: WP82Y V1.4 S1234 ↓:More ↑:Back
Continued over the page…