Instruction Manual lpha TDS 200 1/8 DIN Total Dissolved Solids Controller with Temperature display and Transmitter Technolo gy Made Easy ... 68X276105 rev 0 08/2002 PREFACE This manual serves to explain the use of the lpha TDS 200 controller/transmitter. This manual functions in two ways: first, as a step-bystep guide to help you operate the meter; second, it serves as a handy reference guide. This manual is written to cover as many anticipated applications of the lpha TDS 200 controller/transmitter as possible. If there are doubts in the use of the lpha TDS 200 controller/transmitter, do not hesitate to contact the nearest Eutech Instruments Authorized Distributor. Eutech Instruments cannot accept any responsibility for damage or malfunction to the controller/transmitter caused by improper use of the instrument. Remember to fill in the guarantee card and mail it to your Authorized Distributor or Eutech Instruments Pte Ltd. The information presented in this manual is subjected to change without notice as improvements are made, and does not represent a commitment on the part of Eutech Instruments Pte Ltd. Copyright© Aug 2002 Eutech Instruments Pte Ltd. All rights reserved. TABLE OF CONTENTS 1 2 3 INTRODUCTION SAFETY INFORMATION OVERVIEW 3.1 3.2 3.3 3.4 FRONT PANEL BACK PANEL WIRING PANEL-MOUNTING THE CONTROLLER 5 6 7 7 8 9 10 4 5 6 7 8 MEASUREMENT MODE PASSWORD TDS CALIBRATION TEMPERATURE CALIBRATION SETUP MODE 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 GENERAL INFORMATION SETUP MODE OVERVIEW SET POINT 1 ­ P1.0 SET POINT 2 ­ P2.0 MEASUREMENT RANGE SELECTION ­ P3.0 CONFIGURE TEMPERATURE SETTINGS ­ P4.0 VIEWING TDS CALIBRATION DATA ­ P5.0 VIEWING TDS / TEMPERATURE ELECTRODE DATA ­ P6.0 SET TDS FACTOR ­ P7.0 11 12 14 17 18 18 19 21 24 26 27 28 29 30 30 8.10 CONTROLLER RESET ­ P8.0 9 RELAYS 32 32 33 34 37 10 TRANSMITTER FUNCTION 11 SPECIFICATIONS 12 ACCESSORIES 13 GENERAL INFORMATION 1 INTRODUCTION Thank you for purchasing a DIN TDS 200 Controller. This controller is part of a series of quality process controllers available from Eutech Instruments. These sturdy, economical TDS controllers are designed with the features and reliability of a much more expensive instrument. Your controller includes: · · Removable terminal blocks for easy connections; Two mounting brackets for easy panel mounting; Some features of this controller are: · Two set point, two SPDT relay operation · Scrolling, 14-segment LED guides user easily through setup functions · Reliable power supply from 85 to 260 V AC, 50/60 Hz or DC withstands voltage fluctuations · Push-button operation from the front panel · Single-point calibration for each individual range · Adjustable hysteresis band prevents rapid contact switching around set-point · Selectable automatic or manual temperature compensation · Two-level password protection · Removable terminal strips for quick and easy connections · Built-in memory backup retains setup even if power fails, and lets you configure unit before installation · Isolated 4-20 mA output for remote monitoring or hard copy recording 5 2 SAFETY INFORMATION The Eutech Controller/Transmitter shall be installed and operated only in the manner specified in the Instruction manual. Only skilled, trained or authorized person should carry out installation, setup and operation of the instrument. Before powering up the unit, make sure that power source it is connected to, is as specified in the top label. Failure to do so may result in a permanent damage to the unit. The unit has live and exposed parts inside. If it has to be opened, make sure that the power to the unit is off and disconnected. The unit is Fuse protected. In the event the fuse has to be replaced, use only those as specified in the manual. The degree of protection against electric shock will be achieved only by observance of the corresponding installation rules. 6 3 OVERVIEW 3.1 Front Panel The front panel consists of a 4-digit LED display, 8 LED annunciators and 4 keys. Annunciators 1. REL 1 2. REL 2 3. MEAS 4. CAL 5. SETUP 6. ppm 7. oC 8. ppt Keys 9. MODE 10. ENTER 11. (increment) 11. (decrement) 12. LED Display Toggle between TDS and temperature display Confirm changes or to enter into further levels of sub-menu Use during calibration and setup modes to increment values. Press /keys together to escape to Measurement mode Use during calibration and setup modes to decrease values. Press /keys together to escape to Measurement mode Displayed when Relay 1 is activated Displayed when Relay 2 is activated Displayed in measurement mode Displayed in calibration mode Displayed in setup mode Displayed when measurement range in parts-per-million Unit of the displayed parameter (temperature) Displayed when measurement range in parts-per-thousands 14 segment LED display 8.8.8.8. 7 3.2 Back Panel The back panel consists of three different connectors that can be used with removable terminal blocks (included): 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 321 1. VAC live wire 2. VAC neutral wire 3. VAC protective ground wire 4. unused 5. Relay 2 deactivated position (normally closed) 6. Relay 2 center pole 7. Relay 2 activated position (normally open) 8. Relay 1 deactivated position (normally closed) 9. Relay 1 center pole 10. Relay 1 activated position (normally open) 11. 4-20 mA connection, negative 12. 4-20 mA connection, positive 13. Pt 100 connection: sense (jumper to terminal 14 if using 2-wire RTD) 14. Pt 100 connection: input 15. Pt 100 connection: ground 16. TDS positive terminal 17. TDS negative terminal 18. unused 19. unused 8 3.3 Wiring Caution: Ensure electrical mains is disconnected before proceeding. 1. Connect the power supply to the three-pin terminal block · VAC live wire = 1 · VAC neutral wire = 2 · VAC protective ground wire = 3 lpha TDS 200 controller accepts voltages from 85 to 260 VAC, 50/60 Hz or DC. 2. Connect the Pt 100 leads to terminals 13 to 15 of the seven-pin terminal block. Either wire can be connected to either terminal. Terminals 13 and 14 must be shunted unless using a 3-wire RTD. NOTE: TDS 200 is factory set for Automatic temperature compensation. MTC can be selected in Program P4.0. 3. Power on the controller. The display automatically shows the TDS reading, the ppm and `MEAS' annunciators lights. NOTE: In the event Pt 100 is not connected or the connection is broken in the ATC mode, the display flashes in TDS mode and display OR in temperature mode. 9 3.4 Panel-mounting the controller The supplied mounting hardware allows surface mounting to all panels and protective enclosures. Mounting cut-out size is 91 x 45 mm. To attach the mounting to the controller: 1. Align the catch to the side of the controller, and insert threaded rods through catch. 2. Screw the threaded-rod through the catch in a clock-wise direction. Tighten until the catch holds the controller firmly against the back of the panel or protective housing. Repeat on the other side. Wall pa Threaded Catch TOP VIEW SIDE VIEW 10 Threaded rod Catch approx. 100 approx. 154.20 4 MEASUREMENT MODE Press MODE to toggle between: · TDS measurement mode and · Temperature measurement mode Total Dissolved Solids Measurement Mode The controller displays the selected TDS range number, R X (X ranges from 1 to 8), for 2 seconds before displaying the TDS measurement. TDS Range 0.00 ­ 10.00 ppm 0.0 ­ 100.0 ppm 0.0 ­ 100.0 ppm 0 ­ 1000 ppm 0.00 ­ 5.00 ppt 0.00 ­ 10.00 ppt 0.0 ­ 100.0 ppt 0.0 ­ 100.0 ppt Range No., R 1 2 3 4 5 6 7 8 Resolution 0.01 ppm 0.1 ppm 0.1 ppm 1 ppm 0.01 ppt 0.01 ppt 0.1 ppt 0.1 ppt Cell Constant 0.1 0.1 1 1 1 1 1 10 Temperature Measurement mode Press MODE key once to view the temperature measurement. The display shows ATC (Automatic Temperature Compensation) or MTC (Manual Temperature Compensation), then the current measured temperature (for ATC) or the set temperature (for MTC). The oC annunciator lights when you are measuring temperature. NOTE: After pressing the MODE key to display Temperature, if there is no further keypress, the Controller will automatically revert to TDS Measurement mode after about 30 seconds. See Setup program P4.0 for further instructions. 11 5 PASSWORD To access Calibration and Setup functions, you need to enter a password code. You cannot change calibration and setup parameters unless you first enter the password. The lpha TDS 200 controller features two separate passwords: · TDS and Temperature calibration mode password = 011 · Setup program password = 022 To enter the password: 1. Press ENTER twice. The display reads "P.000". The first "0" flashes. 2. Press ENTER again to leave the first digit "0" and to scroll to the next number. 3. Press the or keys to change the second digit to the correct number (1 or 2). Press ENTER. 4. Press the or keys to change the second digit to the correct number (1 or 2). Press ENTER. If you enter an incorrect digit, press MODE to back up. 5. Press ENTER again. You are now in Calibration mode or Setup mode, depending on password entered. Note: In the Password Entry mode, if there is no key-press for more than 30 seconds, Controller will automatically revert to measurement mode. 12 P . P .000 P .000 .0 P 10 P .020 P .011 P .022 13 6 TDS CALIBRATION IMPORTANT: When Calibration mode is entered, controller automatically goes into a "HOLD" mode where the 4-20 mA output freezes and relays are de-activated (if it was in an activated condition). Upon return to measurement mode, both 4-20mA output and relay activities resume, depending on settings. The lpha TDS 200 controller includes 8 total dissolved solids measurement ranges. One-point slope calibration is possible, in each range. Choose fresh standard solutions, whose value is reasonably close to the measurement value. Before calibration, make sure electrode is clean. Use iso-propyl alcohol followed by thorough rinsing in distilled water to clean electrode. Important: To achieve a successful TDS calibration, two conditions must be satisfied: 1. Difference between measured value of standard solution, and actual value of standard solution, must be within ± 40 %. (e.g. if value of standard solution is 500 ppm, then allowable measured values by controller must be within 700 ppm {+ 40%} and 300 ppm{- 40%}); and 2. the lowest possible value must be at least 10% of full scale (e.g. if range of 0 to 1000 ppm is selected, min. measured value at calibration, must be at least 100.0 ppm). 14 If any or both conditions are not satisfied, controller will display ERR 1 (blinking). Key in the password "011" using the method described in Section 5. Controller flashes the value of the standard solution. Use electrode to agitate standard solution to obtain a homogeneous solution and to dislodge any bubbles. Allow electrode time to stabilize with solution temperature. 4. Use / keys to adjust displayed readings to the value of the standard solution. Press ENTER. 5. If any of the two conditions mentioned above is not satisfied, controller will display ERR1, blinking. 6. If calibration is successful, Controller displays DONE, blinking. Press ENTER to revert to TDS measurement mode (Relays and 4-20 mA output resume activities as per previous settings). NOTE: To clear the ERR1 display and return to calibration mode, press / keys together. 1. 2. 3. 15 50 9 50 0 ENTER dn oe ENTER Notes: You can view the calibrated TDS value from Setup program. See Setup program P5.0. Controller displays calibrated TDS point for selected range. If calibration is not done for the selected range, controller displays `- - - -`. If after thorough cleaning of electrode and ERR1 is displayed after an attempted calibration, consider changing electrode. 16 7 TEMPERATURE CALIBRATION IMPORTANT: When Calibration mode is entered, controller automatically goes into a "HOLD" mode where the 4-20 mA output freezes and relays are de-activated (if it was in an activated condition). Upon return to measurement mode, both 4-20mA output and relay activities resume, depending on settings. This controller features selectable Automatic Temperature Compensation (ATC) or Manual Temperature Compensation (MTC). ATC: ATC mode requires a Pt 100 temperature element. ATC automatically compensates for temperature fluctuations. ATC temperature readings can be offset by ±10 oC. Important: If there is no temperature element wired to controller and ATC is selected on, screen will flash in TDS mode, and an error message (OR) is displayed in temperature mode. MTC: MTC lets you select a specific value at which temperature will be compensated. You can select a manual temperature value from 0 to 50oC. Factory default is 25.0oC. See Setup program P4.0 for instructions on ATC or MTC selection. To offset temperature: 1. Press MODE to select oC mode. Display shows MTC or ATC, then temperature. 2. Key in password "011" as per procedure in Section 5. 3. The screen will flash current oC reading. 4. For ATC: Determine tem ...