TPS smartCHEM-D Manual
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TPS smartCHEM-D Manual

Dissolved oxygen, conductivity, tds, temperature meter
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Congratulations !
The smartCHEM-D is an advanced, high quality Dissolved Oxygen, Conductivity, TDS and
Temperature meter.
Despite its impressive list of features, the smartCHEM-D 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
smartCHEM-D. 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.
3. Main Section
The main section of the handbook provides complete details of the smartCHEM-D, 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.
smartCHEM-D
Dissolved Oxygen,
Conductivity, TDS,
Temperature Meter
Date
: 20-Aug-2002
Author : KE
Version : 1.0

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Summary of Contents for TPS smartCHEM-D

  • Page 1 The introduction has a diagram and explanation of the display and controls of the smartCHEM-D. 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 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

    Contents Introduction ............................5 smartCHEM-D Display and Controls ..................5 smartCHEM-D 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 12.8 Importing Data into Microsoft Excel ..................46 Recorder Port ..........................48 13.1 Recorder Port Configuration ......................48 13.2 Recorder Port Specifications ......................48 Setting the Clock..........................49 Initialising the smartCHEM-D.......................50 Instrument firmware version number..................50 Troubleshooting...........................51 17.1 General Errors ...........................51 17.2 Dissolved Oxygen Troubleshooting....................51 17.3 Conductivity / TDS Troubleshooting..................52...

  • Page 5: Introduction

    1. Introduction 1.1 smartCHEM-D Display and Controls 1.2 smartCHEM-D Rear Panel Connectors Turn the retaining nut clockwise until it clicks into place when plugging in plastic connectors. This is essential to produce a waterproof seal. Always replace the waterproof cap when a connector is not in use to maintain...

  • 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-D, please check that the following accessories have been included: Part No Standard Kit… 1. smartCHEM-D Dissolved Oxygen, Conductivity, TDS, Temperature Meter... 123104 2. k=1/ATC/Temp Conductivity/TDS Sensor............... 122230 3. Temperature/ATC Sensor..................121248 4. 2.76 mS/cm Conductivity Standard, 200mL ............. 122306 5.

  • Page 8: Specifications

    1.9 Specifications 1.9.1 Dissolved Oxygen Ranges Resolution Accuracy ED1 Sensor to 20.00 ppM 0.01 ppM ±0.2% of full scale of 20.0 to 40.0 selected range 0 to 250.0 % Saturation % Saturation ±0.3 % Saturation 250 to 450 % Saturation % Saturation 0 to 50.0 % Gaseous...
  • Page 9 1.9.2 Conductivity Ranges Resolution Accuracy k=0.1 Sensor 0 to 2.000 µS/cm 0.001 µS/cm ±0.5% of full scale of 0 to 20.00 µS/cm 0.01 µS/cm selected range at 25 0 to 200.0 µS/cm µS/cm 0 to 2000 µS/cm µS/cm k=1.0 Sensor 0 to 20.00 µS/cm...
  • Page 10 1.9.3 TDS Ranges Resolution Accuracy k=0.1 Sensor 0 to 1.000 ppM 0.001 ppM ±0.5% of full scale of 0 to 10.00 0.01 selected range at 25 0 to 100.0 0 to 1000 k=1.0 Sensor 0 to 10.00 0.01 ±0.5% of full scale of 0 to 100.0 selected range at 25...
  • Page 11 1.9.4 Temperature Range Resolution Accuracy -10.0 to 120.0 ±0.2 Sensor Type .......... Silicon transistor Calibration ........... Automatic offset calibration Sensor Offset Range......-10.0 to 10.0 1.9.5 General Specifications Memory ..........1489 readings including date and time Automatic Logging....... User-set for one reading every 2 to 90 seconds, minutes or hours.

  • Page 12: Smartchem-D Menu Structure

    2. smartCHEM-D Menu Structure A detailed breakdown of the menu system of the smartCHEM-D is shown below. This diagram provides a quick reference for the menu functions available for the smartCHEM-D. → → F1:Calibrate F1:Oxygen F3:Cond. or TDS F5:Temp. →...

  • Page 13: Dissolved Oxygen Mode

    3.2 Dissolved Oxygen Stirrer The smartCHEM-D is equipped with a 4.5V DC output to power a stirrer for the Dissolved Oxygen sensor. This power output is suitable for the YSI self-stirring BOD sensor (part number 123213), or the TPS submersible DO stirrer (part number 123305).

  • Page 14: Dissolved Oxygen Calibration

    Automatic Temperature Compensation in the ppM Dissolved Oxygen modes. When the Temperature sensor is not connected, the smartCHEM-D will use the Temperature sensor built into the tip of the Dissolved Oxygen sensor for Automatic Temperature Compensation in the ppM Dissolved Oxygen modes.
  • Page 15 A “∗” in the display will be replaced by a decimal point after a successful air calibration. 4. The smartCHEM-D is now calibrated and is ready for Dissolved Oxygen measurement. Rinse the Dissolved Oxygen sensor in distilled water and blot dry before placing into unknown...
  • Page 16 This span calibration provides an alternative to calibrating the Dissolved Oxygen sensor in air. It is only available when the smartCHEM-D is in Salinity-corrected ppM mode. Please note that the normal AIR calibration (section 3.3.2) is still available for Salinity-corrected ppM mode.

  • Page 17: Dissolved Oxygen Calibration Notes

    Do not try to infer Oxygen content from one mode to another. 2. The smartCHEM-D automatically detects if a TPS ED1 or a YSI sensor is connected. When the unit has been calibrated for one type, and the other type is then connected, the message “Probe”...
  • Page 18 Calibration Failed, Span=205.0% 5. The smartCHEM-D will display the following message if the calibration point is too high. The unit must be calibrated in the lower of the two ranges that are provided for each Oxygen mode. Oxygen OvrRange Not Calibrated 6.

  • Page 19: Conductivity Mode

    If the smartCHEM-D has been calibrated on one k factor sensor and a different k factor sensor is subsequently connected, the word “Probe” appears instead of the Conductivity reading. In this...

  • Page 20: Conductivity Calibration

    4.1 to 4.3. Automatic Temperature Compensation is done via a temperature sensor inside the Conductivity sensor. It is therefore not necessary to calibrate the Temperature readout of the smartCHEM-D before taking Conductivity measurements. 1. Plug the Conductivity sensor into the Cond / TDS socket.
  • Page 21 To calibrate immediately without waiting for complete stability, press to disable the Automatic Stability Function. The “ ∗ ” will now be replaced by a decimal point if calibration was successful. 9. The smartCHEM-D is now calibrated for Conductivity and is ready for use in this mode.

  • Page 22: Conductivity Calibration Notes

    This information can be recalled or printed later using the GLP function (see section 9). 5. The smartCHEM-D displays the value of the standard to which it will attempt to calibrate. Ensure that the standard value displayed corresponds to the standard that you are using. Alter the Standards set-up if necessary (see section 4.2).

  • Page 23: Tds Mode

    → → F3:Mode → → F6:TDS). 1. Select Mode ( 2. The smartCHEM-D now proceeds to TDS measurement mode. Note that a “ ∗ ∗ ” is shown in place of the decimal point until a successful calibration has been performed (see section 5.4).

  • Page 24: Tds Calibration

    DO NOT BLOT THE ELECTRODE PLATES. Zero Calibration 3. Let the sensor dry in air. → → F1:Calibrate → → F3:TDS). 4. Select TDS Calibration ( 5. The smartCHEM-D will recognise the low TDS signal and attempt a Zero calibration. For example… 0*01ppM ZERO Calibration Press Enter 6.
  • Page 25 To calibrate immediately without waiting for complete stability, press to disable the Automatic Stability Function. The “ ∗ ” will now be replaced by a decimal point if calibration was successful. 9. The smartCHEM-D is now calibrated for TDS and is ready for use in this mode.

  • Page 26: Tds Calibration Notes

    This information can be recalled or printed later using the GLP function (see section 9). 5. The smartCHEM-D displays the value of the standard to which it will attempt to calibrate. Ensure that the standard value displayed corresponds to the standard that you are using. Alter the Standards set-up if necessary (see section 5.2).

  • Page 27: 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-D is now calibrated for Temperature and is ready for use in this mode.

  • Page 28: Temperature Calibration Notes

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

  • Page 29: Auto Stability Function (Asf)

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

  • Page 30: Asf With Manual Datalogging

    7.3 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… 99.8 25.0 2760. 31/12/01 Auto Log#1 12:00:00 Store As each parameter becomes stable, the highlighting is removed.

  • Page 31: Asf With Automatic Datalogging

    ASF off. 8. Display Backlight The smartCHEM-D is fitted with an Electro-Luminescence (“EL”) backlight. This can be set up according to your preferences as follows… 1. Switch the meter on.

  • Page 32: Good Laboratory Practices (Glp)

    9. Good Laboratory Practices (GLP) The smartCHEM-D keeps a record of the date and time of the last calibrations for all parameters as part of GLP guidelines. 9.1 To recall GLP information on the display 1. Switch the meter on.

  • Page 33: Failed Calibration

    If calibration has failed, the GLP function will reset the date and time for the failed parameter to zero. The smartCHEM-D still shows the results for the last successful calibration, as shown in the following example where the last Conductivity calibration has failed…...

  • Page 34: Glp Calibration Alarm

    9.4 GLP Calibration Alarm A new feature of the smartCHEM-D 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 35: Instrument Serial Number

    GLP Calibration Alarm will still be on the following Monday. 9.5 Instrument Serial Number In case the serial number that is fitted to the rear of the smartCHEM-D is removed or becomes illegible, it is also available on the smartCHEM-D display.

  • Page 36: Access Code

    Re-enter the access code as per the previous step. Press to quit without enabling the Access Code system. 5. The smartCHEM-D now confirms that the Access Code system is enabled before returning to the Access Code menu. 10.2 Using the Access Code System When the Access Code system is enabled (as per section 10.1), the smartCHEM-D prompts the...

  • Page 37: 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-D now confirms that the Access Code system is enabled before returning to the Access Code menu. 10.4 Disabling the Access Code System →...

  • Page 38: 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-D 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 39 5. The smartCHEM-D 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 F3:Send to RS232 Press to log records into the Logger (maximum of 1489 readings).

  • Page 40: Recalling Readings From The Logger

    Notes on Automatic Datalogging 1. The clock must be set before the smartCHEM-D 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 41: 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-D are the same. If necessary, alter the baud rate of the smartCHEM-D (see section 12.1).

  • Page 42: Rs232 Port

    12.2 Sending Readings to the RS232 Port Press to instantly send readings to the RS232 port whenever the smartCHEM-D is in normal display mode. Records can be sent directly to the RS232 port rather than stored in memory during automatic datalogging.

  • Page 43: Commands

    12.5 Commands The following commands can be sent from a PC to the smartCHEM-D. 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-D.

  • Page 44: Data Format

    When requested by a PC with the ?D or ?R commands (section 12.5), the data is terminated with a carriage return. When the data is sent by the smartCHEM-D using the Print function (section 11.5) or the Instant Send function (section 12.2), the data ends with a carriage return and a line feed.

  • Page 45: Glp Data Format

    GLP information is returned as 18 lines terminated by a carriage return. When using the “?G” command (section 12.5), the computer must respond with a character after receiving each line. For example… smartCHEM-D V1.0 S1234 @ 31/12/2001 15:00 Oxygen Zero= 0.1%...

  • Page 46: Importing Data Into Microsoft Excel

    12.8 Importing Data into Microsoft Excel The following procedure details the method for importing a smartCHEM-D 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 47 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 48: Recorder Port

    The optional Recorder Port can be used to send the data from any one parameter to a chart recorder or other analogue logging device. 13.1 Recorder Port Configuration 1. Select the Recorder set-up menu → → F4:Setup → → F4:Ports → → F5:Recorder). The smartCHEM-D will now display the Recorder Port configuration screen… RECORDER >F1:Oxygen F3:Conductivity F5:Temperature The arrow indicates the current selection.

  • Page 49: Setting The Clock

    Alternatively, press menu to quit and retain the current setting. Notes 1. The smartCHEM-D tests that a valid day of the month is entered. If an invalid date is entered (eg. 31/02/2001), the smartCHEM-D beeps and displays the message “Invalid Date”.

  • Page 50: Initialising The Smartchem-D

    15. Initialising the smartCHEM-D If the calibration settings of the smartCHEM-D exceed the allowable limits, the unit may need to be initialised to factory default values. This action may be required if a sensor is replaced. Initialising the unit will reset all user setups to their factory default values and erase all readings logged in memory.

  • Page 51: 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 service. contains the factory calibration 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 52: Conductivity / Tds Troubleshooting

    17.3 Conductivity / TDS 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. Unit attempts Span Sensor has Zero error. Thoroughly rinse sensor in distilled water calibration instead of Zero and allow to completely dry in air before...

  • Page 53: Temperature Troubleshooting

    Dissolved Oxygen data. versa. sensor. Displays flashing “M” when 1. Faulty instrument socket. Return the instrument to the TPS factory for service. Temperature and/or Dissolved Oxygen sensor 2. Faulty Dissolved Oxygen or Return Dissolved Oxygen or Temperature plugged in.

  • Page 54: Appendices

    18. Appendices 18.1 Dissolved Oxygen 18.1.1 Dissolved Oxygen Sensor Fundamentals The electrode used is the amperometric type of Clark Electrode and is suitable for the measurement of oxygen pressures in the range 0 to 100 cm of mercury. While the probe actually reads partial pressure of oxygen, the circuit is calibrated to be read in percentage saturation or parts per million (Milligrams/litre).
  • Page 55 (a) Membrane correction is achieved AUTOMATICALLY ; (b) To provide the mass units (ppM) readout (so popular due to the Winkler process used in the past), the smartCHEM-D Meter has Solubility Correction via an additional temperature sensor in the electrode ;...
  • Page 56 18.1.6 Equilibrium Conditions Whilst Saline Water has a lower ppM than does Fresh Water, it does not mean it necessarily has less biologically available oxygen. Both have 100% Saturation (presuming no Chemical Oxygen Demand (C.O.D.), Biological Oxygen Demand (B.O.D.), etc.) because both are in partial pressure equilibrium with air.

  • Page 57: Conductivity/Tds

    18.2.1 Care, Cleaning and Maintenance of Conductivity Sensors Care of Conductivity sensors The conductivity section of the sensor supplied with your smartCHEM-D consists of two platinum plates that are plated with a layer of “platinum-black”. This is quite a soft layer and is required for stable, accurate measurements.
  • Page 58 Replatinising Conductivity Sensors There are several ways to replatinise Conductivity electrodes. 1. The simplest way is to return the electrode to the TPS factory. We can fully clean the electrode, replatinise it and test all aspects of its performance. 2. An automatic replatiniser is available from TPS, along with replatinising solution. This will plate the electrodes for the right amount of time at the correct current.

  • Page 59: 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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