Instruction Manual αlpha TDS 200 1/8 DIN Total Dissolved Solids Controller with Temperature display and Transmitter Technolo gy Made Easy ...
PREFACE This manual serves to explain the use of the αlpha 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 αlpha TDS 200 controller/transmitter as possible. If there are doubts in the use of the αlpha TDS 200 controller/transmitter, do not hesitate to contact the nearest Eutech Instruments Authorized Distributor.
TABLE OF CONTENTS 1 INTRODUCTION 5 2 SAFETY INFORMATION 6 3 OVERVIEW 7 3.1 FRONT PANEL 7 3.2 BACK PANEL 8 3.3 WIRING 3.4 PANEL-MOUNTING THE CONTROLLER 9 10 4 MEASUREMENT MODE 11 5 PASSWORD 12 6 TDS CALIBRATION 14 7 TEMPERATURE CALIBRATION 17 8 SETUP MODE 18 8.1 GENERAL INFORMATION 18 8.2 SETUP MODE OVERVIEW 19 8.3 SET POINT 1 – P1.0 21 8.4 SET POINT 2 – P2.0 24 8.5 MEASUREMENT RANGE SELECTION – P3.0 26 8.6 CONFIGURE TEMPERATURE SETTINGS – P4.0 27 8.
1 INTRODUCTION Thank you for purchasing a ⅛ 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.
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.
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 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 Keys 9.
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 3 2 1 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.
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 αlpha 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.
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: 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. Catch Threaded rod approx.
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.
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 αlpha 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.
P. P.000 P.000 P.010 P.020 P.011 P.
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 αlpha TDS 200 controller includes 8 total dissolved solids measurement ranges. One-point slope calibration is possible, in each range.
If any or both conditions are not satisfied, controller will display ERR 1 (blinking). 1. 2. 3. 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.
509 500 ENTER done 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.
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.
22.5 25.0 ENTER done 8 SETUP MODE 8.1 General Information IMPORTANT: When Setup 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. To enter setup mode: 1. Key in password “022” using method described in section 5. 2. Press ▲or ▼keys to display various sub-menus shown here. 3.
P1.0 P6. P2.0 P7.0 P3.0 P6.0 P4.0 P5.0 8.2 Setup mode overview P1.0: Set Point 1 P1.1: select relay 1 set point value P1.2: select relay 1 as low or high set point P1.3: set relay 1 hysteresis value P2.0: Set Point 2 P2.1: select relay 2 set point value P2.2: select relay 2 as low or high set point P2.3: set relay 2 hysteresis value P3.0: Range P3.1: select measurement range (with the corresponding cell constant value). Eight measurement ranges are available. P4.0: Temperature Data P4.
P6.0: Electrode Properties P6.1: view cell correcting factor constant value after calibration P6.2: view temperature offset value after calibration (only if in ATC mode) P7.0: TDS Factor P7.1: select TDS factor for appropriate application P8.0: Reset P8.
8.3 Set Point 1 – P1.0 Setup program P1.0 allows you to set parameters for relay 1. P1.1: select relay 1 set point value P1.2: select relay 1 as low or high set point P1.3: set relay 1 hysteresis value (dead band) P1.0 SP 1 P1.1 SP 1 200 P1.2 P1.3 SP 1 HYSt LOW 100 HIGH Press ▲and ▼keys together (ESCAPE) at anytime, to leave Setup mode and return to Measurement mode. P1.1: Select relay set point value Set the TDS value that will activate Relay 1.
P1.2: Set relay as high or low set point Select low set point to activate Relay when measured value undershoots Set point; select high set point to activate Relay when measured value overshoots Set point. Using both SP1 and SP2, you can select lo/lo, lo/hi, hi/lo or hi/hi set points. 1. Key in password “022” as per procedure in Section 5. 2. The screen will scroll P1.0 and SP1. Press ENTER twice. 3. The screen will scroll P1.2, SP1, and LOW or HIGH (Default is LOW). 4.
P1.3: Set Hysteresis value Hysteresis prevents rapid contact switching if measured value is fluctuating near the set point. Once activated, relay will not de-activate until measured value reaches set point plus hysteresis value. Example: Low set point is 200.0 ppm and hysteresis 100.0 ppm, relay will activate when value is below 200.0 ppm, but will not de-activate till measured TDS value rises above 300.0 ppm. Default hysteresis value is 5% of full scale.
8.4 Set Point 2 – P2.0 Setup program P2.0 allows you to set parameters for relay 2. P2.1: select relay 2 set point value P2.2: select relay 2 as low or high set point P2.3: set relay 2 hysteresis value (dead band) P2.0 SP 2 P2.1 SP 2 1800 P2.2 P2.3 SP 2 HYSt LOW 100 HIGH Press ▲and ▼keys together (ESCAPE) at anytime, to leave Setup mode and return to Measurement mode. P2.1: Select relay set point value Set the TDS value that will activate Relay 2.
P2.2: Set relay as high or low set point Select low set point to activate Relay when measured value undershoots Set point; select high set point to activate Relay when measured value overshoots Set point. Using both SP1 and SP2, you can select lo/lo, lo/hi, hi/lo or hi/hi set points. 1. Key in password “022” as per procedure in Section 5. 2. Press ▲key until screen displays P2.0 and SP2. Press ENTER twice. 3. The screen will scroll P2.2, SP2, and LOW or HIGH (Default is HIGH). 4.
8.5 Measurement Range Selection – P3.0 Setup program P3.0 is for selecting the range of measurement. P3.1: select measurement range and corresponding cell constant P3.0 RNGE P3.1 1000 K 10 . Press ▲and ▼keys together (ESCAPE) at anytime, to leave the Setup mode and return to Measurement mode. P3.1: Select Measurement Range Set controller to the specific range of measurement. Ensure the cell you have connected to the controller has the same cell constant as that stated in the range. 1. 2. 3. 4.
8.6 Configure Temperature Settings – P4.0 Setup program P4.0 is for selecting ATC or MTC, set temperature coefficient values, and select normalization temperature P4.1: ATC or MTC mode (default : ATC mode) P4.2: set temperature coefficient (default : 2.10 %) P4.3: set Normalization temperature (default : 25.0 oC) P4.0 TEMP P4.1 MODE ATC MTC P4.2 COEF 2.0 P4.3 NORM 25.0 P4.1: Selecting ATC or MTC 1. Key in the password “022” as per procedure in Section 5. 2. Press ▲key until screen displays P4.
8.7 Viewing TDS Calibration Data – P5.0 Program 5 is a “view only” option, which displays the value at which calibration was performed. P5.1: view Calibrated TDS value (if no calibration performed for this range, controller displays ‘- - - - ‘. These parameters will change each time you recalibrate the controller. P5.0 CL P5.1 CAL 300 Press ▲and ▼keys together (ESCAPE) at anytime, to leave the Setup mode and return to Measurement mode. P5.0: Viewing Calibrated TDS data 1.
8.8 Viewing TDS / Temperature Electrode Data – P6.0 Program 6 has two “view only” options that let you check the electrode parameters for diagnostic purposes. P6.1: view revised cell correcting factor value of electrode P6.2: view temperature probe offset (ATC on only) These parameters will change each time you recalibrate the controller. P6.0 elec P6.1 FCTR 1.000 P6.2 t.ofs 0.0 Press ▲and ▼keys together (ESCAPE) at anytime, to leave the Setup mode and return to Measurement mode. P6.
8.9 Set TDS Factor – P7.0 The alpha TDS 200 Controller allows the TDS factor to be selected, depending on the application. P .0 tds . 0 0 P7.1: Viewing Temperature electrode data 1. Key in the password “022” as per procedure in Section 5. 2. Press ▲key until screen displays P7.0 and TDS. Press ENTER. 3. Screen will scroll P7.1, ‘FACT.’ then TDS factor. (Default is 0.70) 4. Press the ▲or ▼keys to change TDS factor (0.40 to 1.0). Press ENTER. 5. Press ▲and ▼keys together (ESCAPE) to return to P7.0. 8.
Press ▲and ▼keys together (ESCAPE) at anytime, to leave the Setup mode and return to Measurement mode. P8.0: Controller reset 1. Key in the password “022” as per procedure in Section 5. 2. Press ▲key until screen displays P8.0 and RST. Press ENTER. 3. Screen will scroll P8.1, then ‘No’. 4. Press ▲or ▼keys to toggle between YES and NO. Press ENTER to confirm selection. 5. Press ▲and ▼keys together (ESCAPE) to return to P8.0. Press ▲and ▼keys together again, to return to measurement mode.
9 RELAYS The alpha TDS 200 features two SPDT non-powered relays; rated for 6A at 110 VAC, 250 VAC maximum. When your process exceeds the set parameters of a relay set point, the REL 1 or REL 2 indicator lights up. To set parameters for relay one and relay two, see Setup programs P1.0 and P2.0. 10 TRANSMITTER FUNCTION If remote data logging is required, a 4-20 mA current loop can be connected.
11 SPECIFICATIONS 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 – 200.
12 ACCESSORIES Product Description TDS cell, Epoxy body, Graphite sensor, w/3-wire Pt100, k = 0.1 TDS cell, Epoxy body, Graphite sensor, w/3-wire Pt100, k = 1.0 Code no. ECCONSEN89X ECCONSEN88X Note: Above TDS electrodes withstand up to 3 bar pressure. These cells have integral 1.0 m, 5-wire double-shielded open-ended cable. Please contact your authorised distributor or dealer for the prices of extension measuring cables and other accessories like tee joints, electrode assembly, and calibration solutions.
Appendix 1: Simple Explanation on the Function of Hysteresis SP1 Set to LO SP2 Set to HI 100 RELAYON RELAY OFF SP1 120 1880 1900 µS SP2 F O R W A R D D I R EC T I O N R E VE R S E D I R E C T I O N The controller relay activates when the set-point is reached. In the reverse direction, it does not deactivate when the value reaches the set-point. Instead, it continues to be active till the value reaches the amount set by the Hysteresis band.
Appendix 3: External Relays The relays on the alpha TDS 200 series controller are rated for 6 amps at 110 VAC and can be wired directly to your final control element (provided its power requirements does not exceed this). However, to preserve the life of your controller, or if higher power is needed, it is recommended that you use the controller relay to drive an external relay. Diagram below shows a typical installation. Wiring should be changed appropriately if normally closed (N.C.) operation is desired.
13 GENERAL INFORMATION Warranty Eutech Instruments warrants this product to be free from significant deviations in material and workmanship for a period of one year from the date of purchase. If repair is necessary and has not been the result of abuse or misuse within the warranty period, please return by freight pre-paid and amendment will be made without any charge. Eutech Instruments’ Customer Service Dept. will determine if product problem is due to deviations or customer abuse.
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For more information on Eutech Instruments products, contact your nearest Eutech Instruments distributor or visit our website listed below: Manufactured by: Eutech Instruments Pte Ltd. Blk 55, Ayer Rajah Crescent, #04-16/24 Singapore 139949 Tel: (65) 6778 6876 Fax: (65) 6773 0863 E-mail: marketing@eutechinst.com Web-site: http://www.eutechinst.
