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EUTECH INSTRUMENTS ALPHA CON 100 CONDUCTIVITY CONTROLLERTRANSMITTER Instruction Manual

Conductivity controller / transmitter
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INSTRUCTION MANUAL
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68X103704
6/98
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Summary of Contents for EUTECH INSTRUMENTS ALPHA CON 100 CONDUCTIVITY CONTROLLERTRANSMITTER

  • Page 1 INSTRUCTION MANUAL 8 8 8 MODE ENTER READY RELAY SETU uS/mS Technology Made Easy ... 68X103704 6/98...
  • Page 2 The information presented in this manual is subject to change as improvements are made, and does not represent a commitment of Eutech Instruments Pte Ltd. This instruction manual is written to cover as many anticipated applications of the Alpha CON 100 C/CX Conductivity Controller/Transmitter as possible.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. INTRODUCTION 2. GETTING ACQUAINTED 2.1 Front Panel 2.2 The Back Panel 2.3 Selecting Conductivity Measurement Range 2.4 Wiring 3. OPERATING THE CONTROLLER The Main Display 4. SETTING UP THE CONTROLLER 4.1 Setting and Changing the Password 4.2 Setting the Controller Range (Software) 5.

  • Page 4: Introduction

    1. INTRODUCTION The alpha CON 100 series Conductivity Controller/Transmitter is an addition to the line of process controllers from Eutech Instruments. Incorporated with the ASIC (Application Specific Integrated Circuit) microprocessor technology, this panel- mounted on-line controller provides many user-friendly features desirable in conductivity Controllers.

  • Page 5: Appendix

    Some of the features of this Controller are : Automatic temperature compensation (with PT 100) Manual temperature compensation setting without the temperature probe Adjustable temperature coefficient from 0.0 to 10.0% Push button calibration with cell correction function High and Low alarm triggering relays User-defined Password feature to prevent unauthorized entry to change the calibration data, hysteresis function, high and low setpoints information...

  • Page 6: Getting Acquainted

    2. Getting Acquainted Front Panel The front panel consists of a 3 digit LED display together with 5 LED annunciators. There are also 4 keys as shown below. 8 8 8 MODE ENTER SETUP READY RELAY uS/mS The keys available (UP/INCREMENT), (DOWN/DECREMENT), MODE and ENTER keys.

  • Page 7: The Back Panel

    The Back Panel The back panel consists of two connectors. The first one is a 4- way screw terminal and the second is a 12-way screw terminal. Refer to the label on top of the unit for diagram. The connection for the 4-way screw terminals are (from the left to right): 1.

  • Page 8: Selecting Conductivity Measurement Range

    You can set the temperature at a selected value. The temperature is set to factory default at 25.0 NOTE : Eutech Instruments will not be responsible for incorrect application of the controller using improper voltage sources or wrong jumper settings.

  • Page 9: Operating The Controller

    3. Operating the Controller The Main Display Press MODE key to switch to MODE three main displays ENTER Conductivity display, uS/mS temperature display and “SEt” display. Press MODE key once to get into 24.0 MODE temperature measurement. ENTER The C annunciator lights up when you are measuring temperature.

  • Page 10: Setting Up The Controller

    4. Setting Up the Controller Setting and Changing the Password 4.1.1 Setting New Password To set a password, press MODE key until the “SEt” is displayed. MODE Press ENTER key and the ENTER display shows "CAL” SETUP “Con” alternately. Press once and the display shows “Set”...
  • Page 11 To calibrate the controller at any time, you may have to enter the password that you set, in order to access the calibration mode. Once you have entered the password correctly, the display shows "CAL COn” indicating that you are in one of the lower-level SETUP menus.

  • Page 12: Setting The Controller Range (Software)

    Setting the Controller Range (Software) At the measurement mode, press MODE both keys simultaneously ENTER until the “CLr” display shows. Press uS/mS key to select the appropriate Conductivity measurement range. Press ENTER key to confirm. MODE ENTER uS/mS Cell Constant either 0.1 or 1.0 blinks when the 999 uS range is selected MODE ENTER...

  • Page 13: Calibrating The Controller

    5. Calibrating the Controller The Lower Level Menus The "CAL COn" display is the first menu seen upon entering the lower-level menus. Press key to display the various menus as shown in the figure below. Press ENTER key to go to the lower level menus.
  • Page 14 When “CAL COn” displays, press ENTER key to view the default cell constant at 100%. Press ENTER key again to show MODE the measured conductivity value. ENTER keys to scroll to SETUP the standard’s Conductivity value at 25 Press ENTER key to calibrate the Conductivity value shown.

  • Page 15: Calibrating The Controller For Temperature Measurement

    5.3 Calibrating the Controller for Temperature Measurement 5.3.1 The CAL C menu Enter this menu by pressing MODE MODE key twice to the “SEt” display if you are in measurement mode. ENTER SETUP Press ENTER key. password has been set earlier, key in the password using the method described in section 4.1.
  • Page 16 ATC OFF : If a PT 100 is not used, A t c then the ATC should be set to OFF. MODE step above, choose ENTER pressing keys to select SETUP ATC OFF. Then press ENTER. The display will now show the default of 25 C or the last set value (blinking).

  • Page 17: Setting The Alarm Feature

    Setting the Alarm Feature This menu allows you to change the Hi and Lo Setpoint and Hysteresis values. See Section 8 for hysteresis applications. IMPORTANT : When SETUP mode is entered, the 4-20 mA output (only for transmitter model) freezes and the relay de- activates (if it was in an alarm condition).
  • Page 18 5.4.2 The Hi HYS Menu Enter this menu by pressing the MODE key to the “SEt” display MODE if you are in the measurement ENTER mode. SETUP Press ENTER key. password has been set earlier, key in the password using the method described in section 4.1.
  • Page 19 5.4.3 The Lo SEt Menu Enter this menu by pressing MODE key twice to the “SEt” MODE display if you are in measurement ENTER mode. SETUP Press ENTER key. If the password has been set earlier, key in the password using the method described in section 4.1.
  • Page 20 5.4.4 The Lo HYS Menu Enter this menu by pressing M O D E the MODE key to the “SEt” E N TE R display if you are in the S E TU P measurement mode. Press ENTER key. If the password been earlier, key in the password...

  • Page 21: Setting Temperature Coefficient

    5.5 Setting Temperature Coefficient 5.5.1 Temperature Coefficient This menu allows you to set the Temperature Coefficient corresponding to the solution whose Conductivity is being measured. In most controllers, this is fixed at 2.10% per However, for alpha CON 100 C/CX models, it is adjustable from 0.0 to 10.0% per C (please refer to Appendix 3 for Temperature Coefficient determination and limits).

  • Page 22: Setting To Factory Default

    6. Setting to Factory Default All the controller settings and user-defined password, except calibration data will be cleared when you enter into the “Usr” “Clr” menu. Press both the keys MODE simultaneously while you are in any ENTER mode menu. The unit requests for the SETUP password if it was set previously.

  • Page 23: Using The Controller Current Loop For Datalogging (For Transmitter Model Only)

    7. Using the Controller Current Loop for Datalogging (for Transmitter Model Only) The 4-20 mA Current Loop A 4-20 mA current loop can be connected if a remote data logging is required. The current will be proportional to the Conductivity displayed on the panel display. The 4-20 mA current loop can drive a load resistance of no more than 200 .

  • Page 24: Additional Information

    8. Additional Information The controller allows you to set High and Low alarms that switch on or off relays, and activating or deactivating devices linked to the controller. In cases where the Conductivity values fluctuate close to the high or low setpoints, the relays will continuously switch on/off very quickly and may cause problems to the linked devices.
  • Page 25 Explanation of the diagram in the previous page A - Reading reaches (Hi SET - ½ HI HYS), the Hi-Set relay remains inactivated. B - Reading reaches above High Setpoint but below (Hi SET + ½ Hi HYS), Hi-Set relay remains inactivated. C - Reading reaches between (Hi SET - ½...

  • Page 26: Appendix 1

    Appendix 1 Jumper Positions - Internal to the Controller Selects the input voltage between 110 VAC or 220 VAC. Fuse Note that there is a fuse internal to the Controller. Before opening the unit, ENSURE that the power cable is physically separated from the mains supply.

  • Page 27: Appendix 2

    Appendix 2 Temperature Coefficient The Temperature Coefficients (TC) of most solutions vary between 1.8 to 2.4 % per C. This is true of most salt solutions when the Conductivity exceeds about 100 uS. Thus, the default value of TC will be set to 2.10 % per C when the Controller is shipped from the factory.

  • Page 28: Technical Specifications

    Technical Specifications Specifications Range Resolution Cell Constant Conductivity Range 0 - 99.9 uS 0.1 uS 0 - 999 uS 1 uS 0 - 999 uS 1 uS 0 - 9.99 mS 0.01 mS 0 - 99.9 mS 0.1 mS 0 - 200 mS 1 mS 0 - 200 mS 1 mS...
  • Page 29 NOTES...

This manual is also suitable for:

Alpha con 100 cAlpha con 100 cx

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