TPS WP-80D Manual
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TPS WP-80D Manual

Ph, orp, temp meter
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Congratulations !
You have purchased the latest in Handheld pH-ORP-Temperature
instrumentation. We trust that your new WP-80D will give you many
years of reliable service.
The WP-80D 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-80D. It also contains a full listing of all of the items
that you should have received with your WP-80D. 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-80D, 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-80D
pH, ORP, Temp Meter
Version:
2.0
Date:
1-Jul-2012

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Summary of Contents for TPS WP-80D

  • Page 1 Introduction The introduction has a diagram and explanation of the display and controls of the WP-80D. It also contains a full listing of all of the items that you should have received with your WP-80D. 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...

  • Page 3: Table Of Contents

    Page 3 Contents Introduction ..................5 WP-80D Display and Controls ............... 5 Unpacking Information ................7 Specifications ..................8 WP-80D Menu Structure..............10 Operating Modes ................11 Selecting pH, mV/ORP or Relative mV/ORP Mode ......11 pH Calibration ................13 Calibration Procedure ................
  • Page 4 Page 4 11.7 GLP Data Format ................30 11.8 Importing Data into Microsoft Excel ..........31 Battery Saver Function ............. 33 Recharging the Battery ............. 34 Clock Function ................35 14.1 Setting the Clock ................35 14.2 Displaying or Hiding the Clock ............35 Selecting Buffers for Auto Buffer Recognition .......

  • Page 5: Introduction

    Page 5 1. Introduction 1.1 WP-80D Display and Controls...
  • Page 6 (section 7), setting manual temperature compensation (section 7.4), setting the clock (section 14.1), setting the automatic logging period (section 10), and displaying GLP information (section 8.1). key is also used to initialise the WP-80D at turn-on. See section 16. Switches the WP-80D on and off.

  • Page 7: Unpacking Information

    6. Right angle BNC adapter ............JSBNCR 7. Battery charger ..............130037 8. Manual Options that may have been ordered with your WP-80D: 1. Extended cable ..............130040 2. RS232 Serial Interface Cable..........130041 3. Communication software for Windows 95 and later ....130086 4.

  • Page 8: Specifications

    Page 8 1.3 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 ........3600 readings including date and time 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.

  • Page 10: Wp-80D Menu Structure

    Page 10 2. WP-80D Menu Structure A detailed breakdown of the menu system of the WP-80D is shown below This diagram provides a quick reference for the WP-80D menu functions. → → F1:Cal. F1:pH1 (available when Channel 1 in pH mode)

  • Page 11: Operating Modes

    Page 11 3. Operating Modes The WP-80D has two channels. Each channel can be individually set up for pH, mV/ORP or Relative mV/ORP mode. 3.1 Selecting pH, mV/ORP or Relative mV/ORP Mode To select pH, mV/ORP or Relative mV/ORP mode…...
  • Page 12 Page 12 5. The decimal point is replaced by a ∗ ∗ ∗ ∗ if a pH or Temperature calibration has failed (sections 4.1, and 0) if the unit is initialised (section 16), or if the unit has lost its factory calibration (section 18.1).

  • Page 13: Ph Calibration

    Page 13 4. 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. 4.1 Calibration Procedure 1.
  • Page 14 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-80D is calibrated and ready for use in this mode. Discard the used samples of buffer.

  • Page 15: Calibration Notes

    This information can be recalled or printed later using the GLP function (see section 8). 4. The WP-80D 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 16: Mv/Orp Calibration

    Page 16 5. mV/ORP Calibration The mV/ORP section is factory calibrated. There is no user-calibration facility for this mode. 6. 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 17: Notes

    7.00pH 0.0R 7.00pH 31/12 12:00:00 F4:Zeros 9. The WP-80D Relative mV/ORP mode is now zeroed and is ready for use. The readout can be re-zeroed by pressing the key whenever required. 6.1 Notes 1. If Relative mV/ORP is selected for BOTH channels, then the WP-80D offers you a choice between Channel 1 or Channel 2 when you press key to zero the Relative mV/ORP reading.

  • Page 18: Temperature Calibration

    7.2 Calibration Notes 1. Temperature calibration information is retained in memory when the WP-80D 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 19: Calibration Messages

    Page 19 7.3 Calibration Messages 1. If a temperature calibration has been successfully performed, the WP-80D will display the following message and the offset value of the probe. For example: Calibrate OK Offset= 2. If a temperature calibration has failed, the WP-80D will display the following message, and the failed offset value of the probe.

  • Page 20: Good Laboratory Practices (Glp)

    Page 20 8. Good Laboratory Practices (GLP) The WP-80D keeps a record of the date and time of the last pH asymmetry, pH slope and Temperature offset calibrations as part of GLP guidelines. 8.1 To recall GLP information on the display 1.

  • Page 21: Failed Calibration

    Page 21 8.2 Failed Calibration If calibration has failed, the GLP function will reset the date and time to zero. The WP-80D still shows the results of the last successful calibration. For example: Asy 0.10pH Slope 100.0% @ 00/00/00 00:00 @ 00/00/00 00:00 Temp Offset 1.0...

  • Page 22: Instrument Serial Number

    Page 22 8.4 Instrument Serial Number In case the serial number that is fitted to the rear of the WP-80D is removed or becomes illegible, it is also available on the WP-80D 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 3600. 9.2 Recalling Records from the Notepad To recall records from the Notepad onto the WP-80D display: → → → → F2:Notepad). 1. Select the Notepad menu ( 2.

  • Page 24: Erasing Records From The Notepad

    To erase all records from the Notepad: → → → → F2:Notepad). 1. Select the Notepad menu ( 2. Select F2:Erase from the menu. 3. The WP-80D now asks if you are sure that you wish to erase all records… Erase, You Sure? F1:Yes F2:No 4.

  • Page 25: Automatic Data Logging

    If the period was set to 05, followed by , then the WP-80D will automatically log a record every 5 seconds. 5. The WP-80D 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 3600 readings).
  • Page 26 7.00pH 500.0 Sending 12:00:00 The WP-80D 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-80D will allow automatic logging to start.

  • Page 27: Rs232 Port

    Windows is optionally available (part number 130086). Once the data is saved to disk, the next problem is how to use it. The data sent by the WP-80D is formatted in columns that can be imported by ® ®...

  • Page 28: Commands

    Page 28 11.5 Commands The following commands can be sent from a PC to the WP-80D. Note that <cr> denotes carriage return and <lf> denotes a line feed. Action Command Notes Request current ?D<cr> Returns current data Temperature, date and time from WP-80D.

  • Page 29: Data Format

    Page 29 11.6 Data Format Data is returned to the RS232 Port by the WP-80D in the following format. A “•” shown anywhere in this section denotes one space. LLLL PPPPPPuuu ppppppuuu TTTTTTuuu dd/mm/yy hh:mm:ss is the Log Number. Maximum 4 characters, right LLLL justified.

  • Page 30: Glp Data Format

    Page 30 11.7 GLP Data Format GLP information is returned as 4 lines terminated by a carriage return. When using the “?G” command (section 11.5), the computer must respond with a character after receiving each line. For example… WP80D V2.0 S1234 @ 31/12/10 12:00 Asy= 0.00pH @ 31/12/10 11:25...

  • Page 31: Importing Data Into Microsoft Excel

    Page 31 11.8 Importing Data into Microsoft Excel The following procedure details the method for importing a WP-80D text ® ® data file into Microsoft Excel and select File → Open ® ® Start Microsoft Excel In the “Files of type:” pull-down box, choose “Text Files (*prn; *.txt;...
  • Page 32 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.

  • Page 33: Battery Saver Function

    Page 33 12. Battery Saver Function The WP-80D 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 34: Recharging The Battery

    5.60 volts. The battery should be recharged at this point. If the battery is not recharged, the WP-80D will switch itself off when the battery drops below 5.00 volts. To recharge the battery…...

  • Page 35: Clock Function

    Notes 1. The WP-80D 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-80D does test for leap years.

  • Page 36: Selecting Buffers For Auto Buffer Recognition

    Page 36 15. Selecting Buffers for Auto Buffer Recognition The WP-80D 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 37: Initialising The Wp-80

    Page 37 16. Initialising the WP-80D If you need to phone or fax TPS for any further technical assistance, the version number of your WP-80D firmware may of benefit to us. The version number is displayed by the WP-80D at turn-on.

  • Page 38: 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 39: Ph And Mv/Orp Troubleshooting

    Remedy Unit fails to Calibration settings outside Initialize the unit. See section calibrate, even of allowable limits due to 16, Initialising the WP-80D with new probe. previous failed calibration. 1 Point calibration 1. Reference junction Clean reference junction, as fails (Asymmetry blocked.

  • Page 40: Temperature Troubleshooting

    Page 40 Continued next page... pH and mV/ORP Troubleshooting, continued... Inaccurate Reference junction blocked. Clean reference junction, as readings, even per instructions supplied with when calibration is the electrode. successful. Displays 7.00 for Electrical short in connector. 1. Check connector. all solutions.

  • Page 41: Appendices: Ph Sensor Theory

    Page 41 19. Appendices: pH Sensor Theory A combination pH Electrode is two electrodes in one. The sensing membrane is the round or spear shaped bulb at the tip of the electrode. This produces a voltage that changes with the pH of the Solution. This voltage is measured with respect to the second part of the electrode, the reference section.

  • Page 42: Slope Of A Ph Sensor

    Page 42 19.2 Slope of a pH Sensor As mentioned above, a pH electrode produces 0 mV output at around 7.00 pH. As the pH goes up, an “ideal” pH electrode produces -59mV/pH unit at 25 C As the pH goes down, an ideal pH electrode produces +59mV/pH unit.

  • Page 43: Ph Temperature Compensation

    Page 43 19.3 pH Temperature Compensation The slope of a pH electrode (section Error! Reference source not found.) is affected by temperature. This effect is compensated for either by using an Automatic Temperature Compensation (ATC) probe or by entering the sample temperature manually. Figure 19-3 shows the slope of a pH electrode at various temperatures.

  • Page 44: 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 45 Page 45 • 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 • Your return street address • A description of the fault. (Please be specific - "Please Repair"...

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