Instruction Manual Alpha COND 200 1/8 DIN Conductivity Controller Transmitter μS / mS / ºC 68X276103 | Rev.
PREFACE This manual serves to explain the use of the Alpha COND 200 controller/transmitter. This manual functions in two ways: firstly as a step-by-step guide to help you operate the meter; secondly as a handy reference guide. This manual is written to cover as many anticipated applications of the Alpha COND 200 controller/transmitter as possible. If there are doubts in the use of the Alpha COND 200 controller/transmitter, do not hesitate to contact your nearest αlpha Authorized Distributor.
TABLE OF CONTENTS 1 INTRODUCTION 1 2 SAFETY INFORMATION 2 3 OVERVIEW 3 3.1 FRONT PANEL 3 3.2 BACK PANEL 4 3.3 WIRING 5 3.4 PANEL-MOUNTING THE CONTROLLER 6 3.5 INSTALLING SPLIT FERRITE CLAMPING 7 MEASUREMENT MODE 8 4 PASSWORD 9 5 CONDUCTIVITY CALIBRATION 11 6 TEMPERATURE CALIBRATION 13 7 SETUP MODE 14 7.1 GENERAL INFORMATION 14 7.2 SETUP MODE OVERVIEW 15 7.3 SET POINT 1 – P1.0 16 7.4 SET POINT 2 – P2.0 18 7.5 MEASUREMENT RANGE SELECTION – P3.0 20 7.
1 INTRODUCTION Thank you for purchasing a Alpha COND 200 ⅛ DIN Conductivity Controller. This controller is part of a series of quality process controllers available from Eutech Instruments. These sturdy, economical conductivity 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. µS 7. oC 8. mS 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 micro-Siemens / cm Unit of the displayed parameter (temperature) Displayed when measurement range in milli-Siemens / cm Keys 9. MODE 10.
3.2 Back Panel The back panel consists of three different connectors that can be used with removable terminal blocks (included): PT100 NC 10 9 8 7 6 IN NC RELAY2 SENSE 11 - CON 12 RELAY1 + CON GND + 4 - 20mA - 4 - 20mA Caution NC 19 18 17 16 15 14 13 21 20 5 4 NC N L 3 2 1 1. VAC live wire 2. VAC neutral wire 3. unused 4. unused 5. Relay 2 deactivated position (normally closed) 6. Relay 2 center pole 7. Relay 2 activated position (normally open) 8.
3.3 Wiring Caution: Ensure electrical mains are 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 = 20 OR 21 Alpha COND 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.
3.5 Installing Split Ferrite Clamping The power cable (L, N & E) need to be connected to the instrument with two turns through Split Ferrite (Wurth Electronika) clamp which is supplied as an accessory with the instrument.
MEASUREMENT MODE Press MODE to toggle between: • Conductivity measurement mode and • Temperature measurement mode Conductivity Measurement Mode The controller displays the selected Conductivity range number, R X (X ranges from 1 to 8), for 2 seconds before displaying the Conductivity measurement. Conductivity Range 0.00 – 20.00 µS/cm 0.0 – 200.0 µS/cm 0.0 – 200.0 µS/cm 0 – 2000 µS/cm 0.00 – 10.00 mS/cm 0.00 – 20.00 mS/cm 0.0 – 200.0 mS/cm 0.0 – 200.0 mS/cm Range No., R 1 2 3 4 5 6 7 8 Resolution 0.
4 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 Alpha COND 200 controller features two separate passwords: • Conductivity 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.
P. P.000 P.000 P.010 P.020 P.011 P.
5 CONDUCTIVITY 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 Alpha COND 200 controller includes 8 conductivity measurement ranges. One-point slope calibration is possible, in each range.
509 500 ENTER done ENTER Notes: You can view the calibrated Conductivity value from Setup program. See Setup program P5.0. Controller displays calibrated conductivity 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.
6 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 7 SETUP MODE 7.1 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.
7.2 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 P4.1: select ATC or MTC P4.
7.3 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 Conductivity value that will activate Relay 1.
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 µS/cm and hysteresis 100.0 µS/cm, relay will activate when value is below 200.0 µS/cm, but will not de-activate till measured Conductivity value rises above 300.0 µS/cm. Default hysteresis value is 5% of full scale.
7.4 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 Conductivity value that will activate Relay 2.
P2.3: 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: High set point is 1800.0 µS/cm and hysteresis 100.0 µS/cm, relay will activate when value is above 1800.0 µS/cm, but will not de-activate till measured Conductivity value drops below 1700.0 µS/cm. Default hysteresis value is 5% of full scale.
7.5 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 2000 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.
7.6 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.
7.7 Viewing Conductivity Calibration Data – P5.0 Program 5 is a “view only” option, which displays the value at which calibration was performed. P5.1: view Calibrated conductivity 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 Conductivity data 1.
7.8 Viewing Conductivity/ Temperature Electrode Data – P6.0 Program 6 has two “view only” options that let you check the electrode parameters for diagnostic purposes. P5.1: view revised cell constant value of electrode P5.2: 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.
7.9 Controller Reset – P7.0 Resets the controller to factory default values. • Conductivity range remains unchanged based on last selected range • All calibration data and conductivity calibration factor are reset • SP 1 is reset to 10 % of full scale • SP 2 is reset to 90 % of full scale • Hysteresis for both set points is reset to 5 % of full scale • Temperature compensation mode remains unchanged • In MTC mode, temperature value is reset to 25 oC • Temperature Coefficient is reset to 2.
8 RELAYS The Alpha COND 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. 9 TRANSMITTER FUNCTION If remote data logging is required, a 4-20 mA current loop can be connected.
10 SPECIFICATIONS Conductivity Range 0.00 – 20.00 µS/cm 0.0 – 200.0 µS/cm 0.0 – 200.0 µS/cm 0 – 2000 µS/cm 0.00 – 10.00 mS/cm 0.00 – 20.00 mS/cm 0.0 – 200.0 mS/cm 0.0 – 200.
11 ACCESSORIES Product Description Conductivity cell, Epoxy body, Graphite sensor, w/3-wire Pt100, k = 0.1 Conductivity cell, Epoxy body, Graphite sensor, w/3-wire Pt100, k = 1.0 Code no. ECCONSEN89X ECCONSEN88X Note: Above Conductivity electrodes withstand up to 3 bar pressure. These cells have integral 1.0 m, 5-wire double-shielded open-ended cable.
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 HYSTERESISBAND The controller relay activates when the set-point is reached. In the reverse direction, it does not de-activate when the value reaches the setpoint. 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 COND 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.
12 GENERAL INFORMATION Warranty Thermo Scientific 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. Thermo Scientific’s Customer Service Dept. will determine if product problem is due to deviations or customer abuse.
For more information on Thermo Scientific products, contact your nearest distributor or visit our website listed below: Thermo Scientific Water Analysis Environmental Instruments Blk 55, Ayer Rajah Crescent, #04-16/24 Singapore 139949 Tel: (65) 6778 6876 Fax: (65) 6773 0836 E-mail: eutech@thermofisher.com Web-site: http://www.thermo.com/process Distributed by: Oakton Instruments P.O Box 5136, Vernon Hills, IL 60061, USA Tel (in U.S.): 888-462-5866 Tel (outside U.S.
