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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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Table of Contents
Troubleshooting
Related Manuals for TPS WP-80M
Summary of Contents for TPS WP-80M
- Page 1 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.
- Page 2 Page 2 TPS Pty Ltd ABN 30 009 773 371 4 Jamberoo Street Springwood, Brisbane, Australia, 4127 Phone : (07) 32 900 400 International : 61 7 32 900 400 : (07) 3808 4871 International : 61 7 3808 4871 Email : tps@tps.com.au...
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Page 3: Table Of Contents
Page 3 Contents Introduction ..................5 WP-80M Display and Controls ............... 5 Unpacking Information ................7 Specifications ..................8 WP-80M Menu Structure .............. 10 Standard Operating Modes ............11 Selecting pH, mV/ORP or Relative mV/ORP mode ......11 Meat Testing Operating Modes ............ 13 Selecting Bendall’s Equation Mode ............. - Page 4 Setting the Clock ................36 15.2 Displaying or Hiding the Clock ............36 Selecting Buffers for Auto Buffer Recognition ....... 37 Initialising the WP-80M ............. 38 Instrument firmware version number........38 Troubleshooting ................ 39 19.1 General Errors .................. 39 19.2...
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Page 5: Introduction
Page 5 Introduction WP-80M Display and Controls... - Page 6 (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). key is also used to initialise the WP-80M at turn-on. See section 17. Switches the WP-80M on and off.
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Page 7: Unpacking Information
Page 7 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. -
Page 8: Specifications
Page 8 Specifications 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 ........ - Page 9 Page 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.
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Page 10: Wp-80M Menu Structure
Page 10 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 →... -
Page 11: Standard Operating Modes
Page 11 Standard Operating Modes Selecting pH, mV/ORP or Relative mV/ORP mode To select pH, mV/ORP or Relative mV/ORP mode… → → → → F3:Mode)… 1. Select the Mode menu ( F1:pH F2:Rel mV F3:mV F4:Bendalls 2. Press to select pH mode. Press to select mV/ORP mode. - Page 12 Page 12 3.1.3 Relative mV/ORP Mode Displays Relative mV/ORP and Temperature readings simultaneously. Press to alternatively show absolute mV/ORP or the date and time. For example… ° ° ° ° c ° ° ° ° c 1000mVR 25.0 1000mVR 25.0 660mV F4:Zeros £...
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Page 13: Meat Testing Operating Modes
Page 13 Meat Testing Operating Modes Selecting Bendall’s Equation Mode The WP-80M is capable of applying the Bendall's Equation to the pH reading for Meat and Livestock Australia grading requirements. To turn this function on or off … → → → → F3:Mode → → → → F4:Bendalls)…... -
Page 14: Ph Calibration
Page 14 pH Calibration A “∗” in place of the decimal point indicates that the pH readout is not calibrated, or a past calibration has failed. The “∗” will be removed once a full two-point pH calibration has been successfully performed. Calibration Procedure 1. - Page 15 14. When the reading has stabilised, press the key to calibrate. The "∗" will now be replaced by a decimal point, if calibration was successful. 15. The WP-80M is calibrated and ready for use in this mode. Discard the used samples of buffer.
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Page 16: Calibration Notes
This information can be recalled or printed later using the GLP function (see section 9). 4. The WP-80M displays the value of the pH buffer to which it will attempt to calibrate. Ensure that the buffer value displayed corresponds to the buffer that you are using. -
Page 17: Mv/Orp Calibration
Page 17 mV/ORP Calibration The mV/ORP section is factory calibrated. There is no user-calibration facility for this mode. Relative mV/ORP Calibration Select Relative mV/ORP mode when measurements relative to a known standard are required. Calibration of the Relative mV/ORP mode is simply a matter of zeroing the reading when the sensor is in the known standard. -
Page 18: Notes
25.0° ° ° ° c 0mVR 0mVR 660mV F4:Zeros 31/12 12:00:00 8. The WP-80M Relative mV/ORP mode is now zeroed and is ready for use. The readout can be re-zeroed by pressing the key whenever required. Notes 1. The Relative mV/ORP offset is retained in memory when the WP-80M is switched off, even when the battery is removed. -
Page 19: Temperature Calibration
Calibration Notes 1. Temperature calibration information is retained in memory when the WP-80M is switched off, even when the battery is removed. This information can be recalled later using the GLP function (see section 2. Temperature does not need to be recalibrated unless the... -
Page 20: Calibration Messages
Page 20 Calibration Messages 1. If a temperature calibration has been successfully performed, the WP-80M will display the following message and the offset value of the sensor. For example: Calibrate OK 1.0° ° ° ° c Offset= 2. If a temperature calibration has failed, the WP-80M will display the following message, and the failed offset value of the sensor. -
Page 21: Good Laboratory Practices (Glp)
Page 21 Good Laboratory Practices (GLP) The WP-80M keeps a record of the date and time of the last pH asymmetry, pH slope and Temperature offset calibrations as part of GLP guidelines. To recall GLP information on the display 1. Switch the meter on. -
Page 22: Failed Calibration
ENDS Instrument Serial Number In case the serial number that is fitted to the rear of the WP-80M is removed or becomes illegible, it is also available on the WP-80M display. • The serial number is displayed at turn-on, for example…... -
Page 23: Notepad Function
3. Repeat steps 1 & 2 as often as required. The maximum number of readings that can be stored in the Notepad is 2600. 10.2 Recalling Records from the Notepad - Standard To recall records from the Notepad onto the WP-80M display: → → → → F2:Notepad). 1. Select the Notepad menu ( 2. -
Page 24: Recording Readings Into The Notepad - Extra Data Entry
Page 24 10.3 Recording Readings into the Notepad – Extra Data Entry This section is applicable when the Extra Data Entry function is enabled. See section 4.2 for details. To record readings into the Notepad memory with Extra Data Entry : 1. -
Page 25: Recalling Records From The Notepad - Extra Data Entry
To erase all records from the Notepad: → → → → F2:Notepad). 1. Select the Notepad menu ( 2. Select F2:Erase from the menu. 3. The WP-80M now asks if you are sure that you wish to erase all records… Erase, You Sure? F1:Yes F2:No 4. -
Page 26: Printing Records From The Notepad To The Rs232 Port
2. Connect the other end of the RS232 cable to an RS232 Printer, or to COM1 or COM2 of a PC. 3. Ensure that the baud rate for the printer or PC and the WP-80M are the same. If necessary, alter the baud rate of the WP-80M (see section 12.1). -
Page 27: Automatic Data Logging
If the period was set to 05, followed by , then the WP-80M will automatically log a record every 5 seconds. 5. The WP-80M will ask if the records are to be logged into the Notepad, or sent directly to the RS232 port. Press to log records into the Notepad (maximum of 2600 readings). - Page 28 25.0° ° ° ° c 7.00pH Sending 12:00:00 The WP-80M will beep each time a record is sent to the RS232 port. 8. Press to stop automatic logging. Notes: 1. The clock must be set before the WP-80M will allow automatic logging to start.
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Page 29: Rs232 Port
Press to instantly send readings to the RS232 port whenever the WP-80M is in normal run mode. This function is disabled if the automatic logging period is set to greater than zero (see section 11). Records can be sent directly to the RS232 port rather than stored in memory during automatic data logging. -
Page 30: Commands
Page 30 12.5 Commands The following commands can be sent from a PC to the WP-80M. Note that <cr> denotes carriage return and <lf> denotes a line feed. Action Command Notes Request current ?D<cr> Returns the current pH or mV/ORP,... -
Page 31: Data Format
Page 31 12.6 Data Format Data is returned to the RS232 Port by the WP-80M in the following format. A “•” shown anywhere in this section denotes one space. With Extra Data Entry turned OFF : LLLL PPPPPPuuu TTTTTTuuu dd/mm/yy hh:mm:ss... -
Page 32: Glp Data Format
@ 31/12/10 11:30 Temperature Offset= 1.0oC @ 21/12/10 11:35 ENDS 12.8 Importing Data into Microsoft Excel The following procedure details the method for importing a WP-80M text ® ® data file into Microsoft Excel and select File → Open ®... - Page 33 TPS recommends the breaks be inserted. Press “Next >” after the column breaks have been inserted. Simply press “Finish” at step 3 of the Text Import Wizard. TPS recommends that the data format for each column be set once the data is in spreadsheet format.
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Page 34: Battery Saver Function
Page 34 13. Battery Saver Function The WP-80M is equipped with a battery saver function. If no button has been pressed for five minutes, the unit beeps and flashes the display for 20 seconds, and then shuts off. This function can be switched off for continuous use. -
Page 35: Recharging The Battery
5.60 volts. The battery should be recharged at this point. If the battery is not recharged, the WP-80M will switch itself off when the battery drops below 5.00 volts. To recharge the battery…... -
Page 36: Clock Function
Notes 1. The WP-80M does not test for a valid day of the month when setting the clock (eg: attempting to enter 31/02/10 is not corrected). 2. The WP-80M does test for leap years. -
Page 37: Selecting Buffers For Auto Buffer Recognition
Page 37 16. Selecting Buffers for Auto Buffer Recognition The WP-80M is factory set to automatically recognise pH4.01, pH7.00 and pH9.18 buffers. However, some users may prefer to use pH6.86 instead of pH7.00 and pH10.01 instead of pH9.18. The following procedure describes how to set which of these buffers are automatically recognised at calibration. -
Page 38: Initialising The Wp-80M
Extra Data Entry is re-set to ON. 18. Instrument firmware version number. If you need to phone or fax TPS for any further technical assistance, the version number of your WP-80M firmware may of benefit to us. The version number is displayed by the WP-80M at turn-on. -
Page 39: Troubleshooting
Possible Causes Remedy Factory Cal. The EEPROM chip which The unit must be returned to Failed contains the factory TPS for service. • mV/ORP & Temperature calibration information then: has failed. readings may be up to 10% incorrect. • pH readings will be... -
Page 40: Ph And Mv/Orp Troubleshooting
Remedy Unit fails to Calibration settings outside Initialise the unit. See section calibrate, even of allowable limits due to 17, Initialising the WP-80M. with new sensor. previous failed calibration. 1 Point calibration 1. Reference junction Clean reference junction, as fails (Asymmetry blocked. -
Page 41: Temperature Troubleshooting
Page 41 pH and mV/ORP Troubleshooting, continued... Unstable 1. Electrolyte chamber Refill with saturated KCl readings. needs to be refilled. filling solution. 2. Reference junction Clean reference junction, as blocked. per instructions supplied with the sensor. 3. Glass bulb not clean. Clean glass bulb as per instructions supplied with the sensor. -
Page 42: Appendices: Ph Sensor Theory
Page 42 20. Appendices: pH Sensor Theory A combination pH Sensor is two sensors in one. The sensing membrane is the round or spear shaped bulb at the tip of the sensor. This produces a voltage that changes with the pH of the Solution. This voltage is measured with respect to the second part of the sensor, the reference section. -
Page 43: Slope Of A Ph Sensor
Page 43 20.2 Slope of a pH Sensor As mentioned above, a pH sensor produces 0 mV output at around 7.00 pH. As the pH goes up, an “ideal” pH sensor produces -59mV/pH unit at C As the pH goes down, an ideal pH sensor produces +59mV/pH unit. -
Page 44: Ph Temperature Compensation
Page 44 20.3 pH Temperature Compensation The slope of a pH sensor is affected by temperature. This effect is compensated either using Automatic Temperature Compensation (ATC) sensor or by entering the sample temperature manually. Figure 20-3 shows the slope of a pH sensor at various temperatures. -
Page 45: Warranty
Please read service details on our ‘Service’ web page first: http://www.tps.com.au/service.htm TPS Pty Ltd has a reputation for prompt and efficient service. If you feel that this equipment is in need of repair, please re-read the manual. Sometimes, instruments are received for "repair" in perfect working order. - Page 46 Page 46 Please check that the following is enclosed with your equipment: • A TPS ‘Service / Return Goods Form’ – see web link below: http://www.tps.com.au/Service/Service%20form_web.pdf • Your full name • Your company name • Your email address or fax number •...
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