TPS WP-80M User manual

Congratulations !
You have purchased the latest in Handheld pH-ORP-Temperature
instrumentation. The WP-80M is a special version of the WP-80, made
specifically to the requirements of Meat and Livestock Australia for
measuring meat pH.
The WP-80M 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-80M. It also contains a full listing of all of the items
that you should have received with your WP-80M. 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-80M, 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 WP
-
80M
Meat pH Meter
Version: 5.2
Date: 22-Nov-2012

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TPS Pty Ltd
ABN 30 009 773 371
4 Jamberoo Street
Springwood, Brisbane,
Australia, 4127
Phone : [phone]
International : 61 7 32 900 400
Fax : [phone]
International : 61 7 3808 4871
Email : [email protected]
Web : www.tps.com.au

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3
Contents
1. Introduction .....................................................................................5
1.1 WP-80M Display and Controls............................................................... 5
1.2 Unpacking Information ........................................................................... 7
1.3 Specifications......................................................................................... 8
2. WP-80M Menu Structure ..............................................................10
3. Standard Operating Modes...........................................................11
3.1 Selecting pH, mV/ORP or Relative mV/ORP mode............................. 11
4. Meat Testing Operating Modes ....................................................13
4.1 Selecting Bendall’s Equation Mode ..................................................... 13
4.2 Selecting Extra Data Entry On or Off................................................... 13
5. pH Calibration................................................................................14
5.1 Calibration Procedure .......................................................................... 14
5.2 Calibration Notes ................................................................................. 16
5.3 Calibration Messages .......................................................................... 16
6. mV/ORP Calibration ......................................................................17
7. Relative mV/ORP Calibration........................................................17
7.1 Notes.................................................................................................... 18
8. Temperature Calibration...............................................................19
8.1 Calibration Procedure .......................................................................... 19
8.2 Calibration Notes ................................................................................. 19
8.3 Calibration Messages .......................................................................... 20
8.4 Manual Temperature Setting ............................................................... 20
9. Good Laboratory Practices (GLP)................................................21
9.1 To recall GLP information on the display............................................. 21
9.2 Failed Calibration ................................................................................. 22
9.3 Printing GLP Information to the RS232 Port........................................ 22
9.4 Instrument Serial Number.................................................................... 22
9.5 Additional GLP Features...................................................................... 22
10. Notepad Function ......................................................................23
10.1 Recording Readings into the Notepad - Standard ........................... 23
10.2 Recalling Records from the Notepad - Standard............................. 23
10.3 Recording Readings into the Notepad – Extra Data Entry .............. 24
10.4 Recalling Records from the Notepad – Extra Data Entry ................ 25
10.5 Erasing Records from the Notepad ................................................. 25
10.6 Printing Records from the Notepad to the RS232 Port.................... 26
11. Automatic Data logging.............................................................27
12. RS232 Port .................................................................................29
12.1 Setting the Baud Rate...................................................................... 29

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12.2 Sending Readings to the RS232 Port .............................................. 29
12.3 RS232 Configuration........................................................................ 29
12.4 Communication and Statistical Software ......................................... 29
12.5 Commands....................................................................................... 30
12.6 Data Format ..................................................................................... 31
12.7 GLP Data Format ............................................................................. 32
12.8 Importing Data into Microsoft Excel ................................................. 32
13. Battery Saver Function ............................................................. 34
14. Recharging the Battery............................................................. 35
15. Clock Function .......................................................................... 36
15.1 Setting the Clock .............................................................................. 36
15.2 Displaying or Hiding the Clock ......................................................... 36
16. Selecting Buffers for Auto Buffer Recognition ....................... 37
17. Initialising the WP-80M ............................................................. 38
18. Instrument firmware version number. ..................................... 38
19. Troubleshooting........................................................................ 39
19.1 General Errors.................................................................................. 39
19.2 pH and mV/ORP Troubleshooting ................................................... 40
19.3 Temperature Troubleshooting.......................................................... 41
20. Appendices: pH Sensor Theory .............................................. 42
20.1 Asymmetry of a pH Sensor .............................................................. 42
20.2 Slope of a pH Sensor ....................................................................... 43
20.3 pH Temperature Compensation....................................................... 44
21. Warranty .................................................................................... 45

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5
1. Introduction
1.1 WP-80M Display and Controls

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Press to record readings into memory. See section 10.1.
Also used at turn-on to select primary and secondary buffers for
automatic buffer recognition. See section 16.
Press to show or hide the date and time. See section 15.2.
Press to start or stop automatic logging. See section 11.
Alternatively, press to transmit current reading plus date and time to
the RS232 port. See section 12.2.
Also used at turn-on to Extra Data Entry ON or OFF. See section 4.2.
Press to zero relative mV/ORP, when relative mV/ORP mode is
selected. See section 7.
Press to access the user-friendly menu system which makes the
WP-80M a breeze to operate.
and
The and keys are used when calibrating temperature readout
(section 8), setting manual temperature compensation (section 8.4),
setting the clock (section 15.1), setting the automatic logging period
(section 11), and displaying GLP information (section 9.1).
The key is also used to initialise the WP-80M at turn-on. See
section 17.
Switches the WP-80M on and off.
Display
32 character alpha-numeric display with user-friendly menu and
prompting system. Shows pH/ORP and temperature simultaneously.
Date and time can also be displayed.

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7
1.2 Unpacking Information
Before using your new WP-80M, please check that the following
accessories have been included:
Part No
1. WP-80M pH-ORP-Temperature Instrument ........................... 130055/1
2. Intermediate Junction pH Sensor, 1m .................................... 121234
3. Stab Type Temperature/ATC Sensor, 1m.............................. 121249
4. pH7.00 Buffer, 200mL............................................................ 121387
5. pH4.01 Buffer, 200mL............................................................ 121381
6. Battery charger ...................................................................... 130037
7. Manual
Options that may have been ordered with your WP-80M:
1. Extended cable...................................................................... 130040
2. RS232 Serial Interface Cable................................................. 130041
3. Communication software for Windows 95 and later ............... 130086
4. USB to Serial Adaptor (requires 130041 also) ....................... 130087
5. Hard Carry Case.................................................................... 130059
6. Battery charger lead for 12V cigarette lighter socket.............. 130046
7. Battery charger lead for 12V DC, with battery clips ................ 130052
8. Solar Panel............................................................................ 130012

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1.3 Specifications
pH
Range..................................0 to 14.00 pH
Resolution ...........................0.01 pH
Accuracy .............................±0.01 pH
mV/ORP
Range..................................0 to ±500.0 and 0 to ±1500 mV (auto-
ranging)
Resolution ...........................0.15 and 1 mV
Accuracy .............................±0.3 and ±1 mV
Temperature
Range..................................-10.0 to +120.0
O
C
Resolution ...........................0.1
O
C
Accuracy .............................±0.2
O
C
General Specifications
Bendall’s Equation ....................User can select Bendall’s Equation On or
Off for final pH value.
Temperature Compensation:
pH (only – not for mV/ORP) .....Automatic 0 to 100
o
C
Manual 0 to 100
o
C
Calibration:
pH Automatic standard recognition in pH4.01,
pH6.86, pH7.00, pH9.18 or pH10.01
buffers
pH Sensor Asymmetry Range -1.00 to +1.00 pH
pH Sensor Slope Range.......85.0 to 105%
Input Impedance ..................>3 x 10
12
Ω
mV/ORP...............................Sensor calibration not available.
Temperature.........................Use a reference thermometer.
Temperature Sensor Offset ..-10.0
o
C to +10.0
o
C

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9
Memory.................................... 2600 readings including date and time
User can select sample identifier entry
On or Off.
Automatic Logging.................... User-set for one reading every 1 to 90
seconds, 1 to 90 minutes, or 1 to 24 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 pH and
Temperature calibration are stored, and
can be recalled or sent to the RS232 port
at any time.
Power....................................... 6V NiMH Rechargeable Battery for
approx 50 hours operation.
Dimensions .............................. 195 x 110 x 55 mm
Mass ........................................ Instrument only : Approx 520g
Full Kit : Approx 2.5kg
Environment............................. Temperature : 0 to 45
O
C
Humidity : 0 to 95 % R.H.

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2. WP-80M Menu Structure
A detailed breakdown of the menu system of the WP-80M is shown below .
This diagram provides a quick reference for the WP-80M menu functions.
→
F1:Cal. → F1:pH (available when in pH mode)
F2:Temp
→ F2:Notepad → F1:Recall
F2:Erase
F3:Print
F4:Prog. → F1:Min
F2:Sec
F3:Hr
↑↓:Set Period
→ F3:Mode → F1:pH.
F2:Rel mV
F3:mV
F4:Bendalls → F1:OFF
F2:ON
→ F4:Setup → F1:Batt → F1:OFF
(Battery Saver)
F2:ON
(Battery Saver)
F2:Clock
F3:GLP → F1:Recall
F3:Print
F4:Baud → F1:300
F2:1200
F3:9600
F4:19200