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TPS smartCHEM-Titro Manual

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Congratulations !
The smartCHEM-Titro is an advanced, high quality pH, mV & Temperature instrument. It
features the ability to directly connect to a Schott Universal burette for Automatic Titration
applications.
Despite its impressive list of features, the smartCHEM-Titro 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.
Introduction
2.
The introduction has a diagram and explanation of the display and controls of the
smartCHEM-Titro. It also contains a full listing of all of the items that you should have
received with the unit. Please take the time to read this section, as it explains some of items that
are mentioned in subsequent sections.
Main Section
3.
The main section of the handbook provides complete details of the smartCHEM-Titro,
including operating modes, calibration, troubleshooting, specifications, and warranty terms.
Appendices
4.
Appendices containing background information and application notes are provided at the back
of this manual.
smartCHEM-Titro
pH, mV, Temperature Meter
with Automatic Titrator
function
Date
: 29-Jun-2007
Author
: AB
Version : 1.2

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Summary of Contents for TPS smartCHEM-Titro

  • Page 1 The introduction has a diagram and explanation of the display and controls of the smartCHEM-Titro. It also contains a full listing of all of the items that you should have received with the unit. Please take the time to read this section, as it explains some of items that are mentioned in subsequent sections.
  • Page 2 TPS Pty Ltd ABN 30 009 773 371 Unit 6 / 253 Leitchs Road Brendale, QLD, Australia, 4500 Phone : (07) 3205.8027 International : 61 7 3205 8027 : (07) 3808.4871 International : 61 7 3808 4871 Email : tps@tps.com.au...

  • Page 3: Table Of Contents

    Contents Introduction .............................. 5 smartCHEM-Titro Display and Controls ..................5 smartCHEM-Titro Rear Panel Connectors ..................5 Function and Menu Keys ........................6 One-Touch Keys ..........................6 Numeric Keypad ..........................6 Delete Key ............................6 240 x 64 Dot Graphic Display ......................6 Unpacking Information ........................
  • Page 4 Data Format ............................ 50 13.7 GLP Data Format ........................... 51 13.8 Importing Data into Microsoft Excel ..................... 52 Setting the Clock ..........................555 Initialising the smartCHEM-Titro ..................... 55 Instrument firmware version number ..................... 55 Troubleshooting ..........................56 17.1 General Errors ..........................56 17.2 pH and mV Troubleshooting ......................

  • Page 5: Introduction

    1. Introduction 1.1 smartCHEM-Titro Display and Controls 240 x 64 dot Graphic LCD with Backlight Function One-Touch Numeric and Menu and Enter Keypad Keys Keys 1.2 smartCHEM-Titro Rear Panel Connectors Titration On / Off Switch Karl Fischer Polarisation Burette Reference Sensor...

  • Page 6: Function And Menu Keys

    1.3 Function and Menu Keys Press to enter the user-friendly menu system. is also used to step backwards through the menu one level at a time, and as an “escape” key to quit functions such as calibration, data entry etc. Press the function keys to select desired options within the menu system.

  • Page 7: Unpacking Information

    1.8 Unpacking Information Before using your new smartCHEM-Titro, please check that the following accessories have been included: Part No Standard Kit… 1. smartCHEM-Titro pH / mV Automatic Titrator ............121106 2. Cable to connect Schott Burette to smartCHEM-Titro ..........130122 3.

  • Page 8: Specifications

    1.9 Specifications 1.9.1 pH Ranges Resolution Accuracy 0 to 14.000 pH 0.001 pH ±0.002 pH 0 to 14.00 0.01 ±0.01 Sensor Type .......... Glass bulb pH sensor, combination or half cell. Input Impedance ........>3 x 10 Ohms Temperature Compensation ....Automatic, 0 to 100 Calibration ..........
  • Page 9 1.9.4 General Specifications Memory ..........2340 readings including date and time Automatic Logging ....... User-set for one reading every 1 to 60 seconds, minutes or hours. RS232 Port ..........1200, 9600, 19200 & 38400 baud. 8 bits, no parity, 1 stop bit, XON/XOFF Protocol. Clock .............

  • Page 10: Smartchem-Titro Menu Structure

    2. smartCHEM-Titro Menu Structure A detailed breakdown of the menu system of the smartCHEM-Titro is shown below. This diagram provides a quick reference for the menu functions available for the smartCHEM-Titro. → → F1 does not appear in the menu...

  • Page 11: Automatic Titrator Mode

    Automatic Titrator function ON. Press to turn the Automatic Titrator function OFF. Press to quit without changing the current selection. 3. In normal display mode, the smartCHEM-Titro will now prompt you to press to start the Standard Titration. For example… 7.00pH 25.0 0.00mL...

  • Page 12: Setting Up The Apparatus For Automatic Titrations

    3.2 Setting up the apparatus for Automatic Titrations Illustration of connections for smartCHEM-Titro Standard Titration setup… 1. Select a flat Benchtop with enough free space to fit the entire Titration apparatus. 2. If computer interfacing is desired, connect the Serial cable (130041) to the Power / RS232 socket of the smartCHEM-Titro.
  • Page 13 Schott Burette and Burette socket on the smartCHEM-Titro. See the Schott Burette handbook for full details on setting up this device. The default factory settings should not need to be changed for use with the TPS smartCHEM-Titro.

  • Page 14: Titration Parameters

    • The delay time is the number of seconds the smartCHEM-Titro will wait for when the end point is reached before pronouncing the titration complete.
  • Page 15 To set the minimum dose rate… → → → → F4:Setup → → → → F6:Titr.). 1. Select the Titration menu ( 2. Select F3:Min Rate from the menu. The following screen is now displayed… Enter Minimum mL/min Addition Rate:0.2 Enter the minimum dose rate, from 0.1 to 3.0 mL / minute, and press To set the proportional band...
  • Page 16 3.3.2 Standard Titration Parameters This section is applicable directly to a Standard Titration procedure. The user is able to set the Titration variables to their requirements… → → → → F4:Setup → → → → F6:Titr.). 1. Select the Titration menu ( 2.

  • Page 17: Performing A Standard Titration

    See section 3.3.1 for details on changing the Titration Parameters. Press at any time during the titration procedure to abort the titration. 1. When the smartCHEM-Titro is in Standard Titrator mode, the following display is shown in normal display mode… 4.00pH 25.0...

  • Page 18: Dc Switched Output

    3.5 12V DC Switched Output (Optional) When the smartCHEM-Titro is in Standard Titrator mode, the 12V DC output can be activated manually to switch on devices such as a solenoid valve for degassing. This function is available at any time.

  • Page 19: Standard Ph Mode

    4. Standard pH Mode 4.1 Selecting pH Mode To select or change the pH Mode… → → → → F3:Mode )… 1. Select the Mode menu ( Mode >F1:0.01pH F2:0.001pH F3:mV F4:Rel mV F5:Titrator The arrow indicates the current selection. Press to select pH mode with 0.01 pH resolution.

  • Page 20: Selecting The Ph Buffer Set

    4.2 Selecting the pH Buffer Set The smartCHEM-Titro can be programmed to automatically recognise any of the following buffer sets during pH calibration. All pH values listed below are at 25 1. pH4.00, pH6.88, pH9.23 2. pH4.00, pH6.88, pH10.06 3. pH4.00, pH7.00, pH9.23 4.
  • Page 21 5. If you wish to use a pH buffer other than one of those listed above, its value can be keyed in during calibration. Make sure that pH versus Temperature data for the buffer is known.

  • Page 22: Calibration Buffer Sequence

    4.3 Calibration Buffer Sequence Before proceeding to pH Calibration (section 4.4), please consider the sequence in which the buffers should be used. This will vary depending on whether a 1, 2 or 3 point pH calibration is required. 4.3.1 1 Point Calibration A 1 point pH calibration can be performed in any buffer and will only adjust for the asymmetry of the pH sensor.

  • Page 23: Ph Calibration

    4.4 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 at least a two-point pH calibration has been successfully performed.
  • Page 24 4.3.3 for details on the correct sequence of buffers to ensure the instrument is correctly calibrated at the 3 points. 12. The smartCHEM-Titro is now calibrated for pH and is ready for use in this mode. Discard the used samples of buffer.

  • Page 25: Ph Calibration Notes

    4. A full 2 point calibration should be performed at least monthly. Of course, more frequent calibration will result in greater confidence in results. 5. All calibration information is retained in memory when the smartCHEM-Titro is switched off, even when the power supply is removed. This information can be recalled or printed later using the GLP function (see section 10).

  • Page 26: Ph Calibration Messages

    Asymmetry Calibration OK +0.10pH Asym 2. If a 1-point calibration has failed, the smartCHEM-Titro will display the following message and the failed asymmetry value of the electrode. Calibration Failed, Repeat Cal. or Initialise 1.1 pH Asymmetry...
  • Page 27 Calibration Failed, Repeat Cal. or Initialise 80.0% SlopeB 7. If the smartCHEM-Titro has been 3-point calibrated and the incorrect buffer sequence is subsequently used, the following message will be displayed… Cal. sequence wrong. Cannot 3 Point Cal. Change to 2 point ?

  • Page 28: Absolute Millivolt Mode

    Press to quit without changing the current selection. 2. The smartCHEM-Titro will display the actual millivolts produced by the sensor in this mode. 5.2 Absolute Millivolt Calibration This calibration procedure uses a Redox/ORP sensor and ZoBell calibration as examples. For other types of sensors (eg.

  • Page 29: Mv Calibration Notes

    Automatic Stability Function. 7. The smartCHEM-Titro is now calibrated for mV and is ready for use in this mode. Discard the used samples of standard. Rinse the Redox sensor in distilled water and blot dry before placing into unknown samples.

  • Page 30: Mv Calibration Messages

    Calibration Failed, Offset=-100.0mV 3. The smartCHEM-Titro has an allowable Offset range of –60 to +60 mV. If calibration fails due to the Offset being outside these limits, then please consult the Troubleshooting guide (section 17.2) for possible remedies.

  • Page 31: Relative Millivolt Mode

    Relative Millivolt mode. Press to quit without changing the current selection. 4. The smartCHEM-Titro will display the millivolt data relative to a known, user-selectable zero point. 6.2 Relative Millivolt Calibration Calibration of the Relative mV mode is simply a matter of zeroing the reading when the sensor is in the known standard.

  • Page 32: Relative Millivolt Calibration Notes

    To Zero immediately without waiting for complete stability, press to disable the Automatic Stability Function. 8. The smartCHEM-Titro Relative mV mode is now zeroed and is ready for use. The readout can be re-zeroed by pressing whenever required. 6.3 Relative Millivolt Calibration Notes 1.

  • Page 33: Temperature Mode

    When the Temperature reading has stabilised, the unit will calibrate itself. To calibrate immediately without waiting for complete stability, press to disable the Automatic Stability Function. 6. The smartCHEM-Titro is now calibrated for Temperature and is ready for use in this mode.

  • Page 34: Temperature Calibration Notes

    1. If a temperature calibration has been successfully performed, the smartCHEM-Titro will display the following message and the offset of the sensor. Calibration OK Offset=0.1 2. If a temperature calibration has failed, the smartCHEM-Titro will display the following message and the failed offset value of the sensor. Calibration Failed Offset=11.0 3.

  • Page 35: Manual Temperature Setting

    Alternatively, press to quit and retain the current setting. 6. When returning the smartCHEM-Titro to normal measurement mode, note the “ C ” in the temperature readout alternating with an “ M ” indicating that Manual Temperature Compensation is in use. For example…...

  • Page 36: Auto Stability Function (Asf)

    8. Auto Stability Function (ASF) ASF adds an extra level of versatility to the smartCHEM-Titro. When ASF is activated, the smartCHEM-Titro monitors all parameters that are currently in use. When ALL parameters become stable, the readings are frozen on the display.

  • Page 37: Asf With Manual Datalogging

    8.3 ASF with Manual Datalogging 1. Press then in normal measurement mode. All active parameters are highlighted and the symbol appears in the display, along with the message “Auto Store”. For example… r r r r 31/12/04 Log#1 12:00:00 Auto Store As each parameter becomes stable, the highlighting is removed.

  • Page 38: Asf With Automatic Datalogging

    8.4 ASF with Automatic Datalogging Using ASF with Automatic Datalogging allows continuous logging until all readings are stable. This is useful in titrations etc, where logging is no longer required once an end point is reached. See section 12.2 for details on programming the Automatic Datalogging function. 1.

  • Page 39: Display Backlight

    9. Display Backlight The smartCHEM-Titro is fitted with an Electro-Luminescence (“EL”) backlight. This can be set up according to your preferences as follows… 1. Switch the meter on. → → → → F4:Setup → → → → F3:Backlight ). 2. Select the Backlight menu ( 3.

  • Page 40: Good Laboratory Practices (Glp)

    10. Good Laboratory Practices (GLP) The smartCHEM-Titro keeps a record of the date and time of the last calibrations for all parameters as part of GLP guidelines. 10.1 To recall GLP information on the display 1. Switch the meter on.

  • Page 41: Glp Calibration Alarm

    10.4 GLP Calibration Alarm A new feature of the smartCHEM-Titro is the GLP calibration alarm. The operator can select how often they wish to be reminded that the instrument requires calibration, and for which parameters they wish to be reminded.

  • Page 42: Instrument Serial Number

    GLP Calibration Alarm will still be on the following Monday. 10.5 Instrument Serial Number In case the serial number that is fitted to the rear of the smartCHEM-Titro is removed or becomes illegible, it is also available on the smartCHEM-Titro display.

  • Page 43: Access Code

    Access Code menu. 11.2 Using the Access Code System When the Access Code system is enabled (as per section 11.1), the smartCHEM-Titro prompts the operator to enter the access code whenever is pressed in normal display mode. No further access code entry is required to access any of the menu functions.

  • Page 44: Changing The Access Code

    Re-enter the access code as per the previous step. Press to quit without changing the Access Code. 5. The smartCHEM-Titro now confirms that the Access Code system is enabled before returning to the Access Code menu. 11.4 Disabling the Access Code System →...

  • Page 45: Datalogging

    The display should now look similar to that shown below. The current Logging/Printing Period is displayed. Enter Logging/Print Period: 0 secs 3. Use the Numeric Keypad to set the period at which the smartCHEM-Titro will automatically log records into memory or to the RS232 port. Press to save the Logging/Printing Period. Press to quit without changing the current setting.
  • Page 46 5. The smartCHEM-Titro will ask if the records are to be logged into the instrument’s memory, or sent directly to the RS232 port. The display will look like this… F1:Log to Memory F2:Send to RS232 Press to log records into the Logger (maximum of 2340 readings).

  • Page 47: Recalling Readings From The Logger

    Notes on Automatic Datalogging 1. The clock must be set before the smartCHEM-Titro will allow automatic datalogging to start. The message “ Clock Not Set ” is displayed if the clock is not set. See section 14 for details on setting the clock.

  • Page 48: Printing Records From The Logger To The Rs232 Port

    2. Connect the other end of the RS232 cable to an RS232 Printer, or to a Serial port of a PC. 3. Ensure that the baud rate for the printer or PC and the smartCHEM-Titro are the same. If necessary, alter the baud rate of the smartCHEM-Titro (see section 13.1).

  • Page 49: Rs232 Port

    (part number 130086). Once the data is saved to disk, the next problem is how to use it. The data sent by the smartCHEM-Titro is formatted in fixed-width columns that can be imported by programs such as ® ®...

  • Page 50: Commands

    13.5 Commands The following commands can be sent from a PC to the smartCHEM-Titro. Note that <cr> denotes carriage return and <lf> denotes a line feed. Action Command Notes Request current data ?D<cr> Returns the current data of all parameters plus date and time from the smartCHEM-Titro.

  • Page 51: Data Format

    When requested by a PC with the ?D or ?R commands (section 13.5), the data is terminated with a carriage return. When the data is sent by the smartCHEM-Titro using the Print function (section 12.5) or the Instant Send function (section 13.2), the data ends with a carriage return and a line feed.

  • Page 52: Glp Data Format

    13.7 GLP Data Format GLP information is returned as 18 lines terminated by a carriage return. When using the “?G” command (section 13.5), the computer must respond with a character after receiving each line. For example… smartCHEM-T V1.0 T1234 @ 31/12/2004 13:00 Offset= 10.0mV @ 01/04/2004 12:00...

  • Page 53: Importing Data Into Microsoft Excel

    13.8 Importing Data into Microsoft Excel The following procedure details the method for importing a smartCHEM-Titro text data file into ® ® Microsoft Excel and select File → Open ® ® 1. Start Microsoft Excel 2. In the “Files of type:” pull-down box, choose “Text Files (*prn; *.txt; *.csv)”.
  • Page 54 Press “Next >” after all the column breaks have been inserted. 6. 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 55: Setting The Clock

    Alternatively, press menu to quit and retain the current setting. Notes 1. The smartCHEM-Titro tests that a valid day of the month is entered. If an invalid date is entered (eg. 31/04/2004), the smartCHEM-Titro beeps and displays the message “ Invalid Date ”.

  • Page 56: Initialising The Smartchem-Titro

    1. Select Initialise from the Setup menu ( 2. The smartCHEM-Titro now asks if you are sure that you wish to initialise ALL parameters, or just the Slope B from a 3 point pH calibration. The latter is only offered when a 3 point pH calibration has actually been performed…...

  • Page 57: Troubleshooting

    17.1 General Errors Error Message Possible Causes Remedy Factory Cal. Failure The EEPROM chip which The unit must be returned to TPS for contains the factory calibration service. Need Factory Service information has failed. EEPROM Write Failure User calibration settings have Switch the meter OFF for 5 seconds and been lost or corrupted.

  • Page 58: Ph And Mv Troubleshooting

    17.2 pH and mV Troubleshooting Symptom Possible Causes Remedy Unit fails to calibrate, even Calibration settings outside of Initialise the unit. See section 15. with new probe. allowable limits due to previous failed calibration. 1 Point calibration fails. 1. Reference junction blocked. Clean reference junction as per instructions (pH asymmetry is greater supplied with the pH or reference electrode.

  • Page 59: Temperature Troubleshooting

    2. Faulty Temperature sensor. Return Temperature sensor for repair, or replace sensor. Displays flashing “M” when 1. Faulty instrument socket. Return the instrument to the TPS factory for service. Temperature sensor plugged 2. Faulty Temperature sensor. Return Temperature sensor for repair, or replace sensor.

  • Page 60: Appendices

    18. Appendices 18.1 pH Electrode Fundamentals pH electrodes are generally combination electrodes, where the pH sensing membrane and the reference system are contained in a single body. 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.
  • Page 61 18.1.2 Slope of a pH or Specific Ion Electrode 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 –59.16mV/pH unit at 25 C As the pH goes down, an ideal pH electrode produces +59.16mV/pH unit.
  • Page 62 Karl Fischer titrations. This titration is a method for determining minute quantities of water in non-aqueous liquids. The TPS Double Platinum electrode (part no 122237) has two connectors. The bayonet type BNC connector fits to the pH/mV/Ion BNC socket and the black plastic connector fits to the Accessories socket.
  • Page 63 6. If the value obtained is still outside 7.06 +/-0.05 pH, then the electrode should be replaced. 18.1.6 Determining if an instrument or electrode is faulty The following test can be performed to help determine if the smartCHEM-Titro or the pH or Redox electrode is faulty.

  • Page 64: Warranty

    TPS Pty. Ltd. has a fine reputation for prompt and efficient service. In just a few days, our factory service engineers and technicians will examine and repair your equipment to your full satisfaction.

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