Instruction Manual lpha pH 200 1/8 DIN pH / ORP Controller with Temperature display and Transmitter Technology Made Easy ... 68X276101 Rev 3 1/2004 Preface This manual serves to explain the use of the lpha pH 200 controller/transmitter. This manual functions in two ways: first, as a step-by-step 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 pH 200 controller/transmitter as possible. If there are doubts in the use of the lpha pH 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 mail 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© Sep 2001 Eutech Instruments Pte Ltd. All rights reserved. Rev 3 1/2004 TABLE OF CONTENTS 1 2 3 INTRODUCTION ........................................................................................... 1 SAFETY INFORMATION .............................................................................. 2 OVERVIEW.................................................................................................... 3 3.1 3.2 3.3 3.4 4 5 6 7 8 9 FRONT PANEL ........................................................................... 3 BACK PANEL............................................................................. 4 WIRING ..................................................................................... 5 PANEL-MOUNTING THE CONTROLLER ...................................... 6 MEASUREMENT MODE............................................................................... 7 PASSWORD.................................................................................................. 8 PH CALIBRATION ...................................................................................... 10 ORP CALIBRATION ................................................................................... 13 TEMPERATURE CALIBRATION................................................................ 14 SETUP MODE ............................................................................................. 15 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 GENERAL INFORMATION ........................................................ 15 SETUP MODE OVERVIEW......................................................... 16 SET POINT 1 ­ P1.0 ................................................................. 17 SET POINT 2 ­ P2.0 ................................................................. 19 CONFIGURATION ­ P3.0.......................................................... 21 VIEWING CALIBRATION POINTS: PH OR ORP ­ P4.0 ............. 23 VIEWING PH ELECTRODE DATA ­ P5.0.................................. 24 VIEWING ORP ELECTRODE DATA ­ P5.0 .............................. 25 CONTROLLER RESET ­ P6.0 ................................................... 26 10 11 12 13 14 15 RELAYS....................................................................................................... 27 TRANSMITTER FUNCTION ....................................................................... 27 ERROR MESSAGES................................................................................... 27 SPECIFICATIONS....................................................................................... 28 ACCESSORIES........................................................................................... 29 GENERAL INFORMATION......................................................................... 34 -2- 1 INTRODUCTION Thank you for purchasing a pH 200 DIN pH/ORP Controller. This controller is part of a series of quality process controllers available from Eutech Instruments. These sturdy, economical pH/ORP 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; When shipped, the controller is set to the pH mode. See Setup program P3.1 for directions on selecting ORP mode. 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 · Two-point pH calibration, offset temperature and ORP calibration · Adjustable hysteresis band prevents rapid contact switching near set-point · Selectable automatic or manual temperature compensation · Two-level password protection · Removable terminal strips for quick and easy connections · Non-Volatile memory 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 · · · -1- 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. -2- 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. pH 7. oC 8. mV Keys 9. MODE 10. ENTER 11. / (increment / decrement) 12. Full 14-segment display Use to toggle between measurement modes (pH/ORP and temperature) Press to confirm changes or to enter into further levels of the lower menu Use during calibration and setup modes to increment or decrement . Press both keys together in calibration and setup modes 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 Unit of the displayed parameter (pH) Unit of the displayed parameter (temperature) Unit of the displayed parameter (ORP) -3- 3.2 Back Panel The back panel consists of four different connectors that can be used with removable terminal blocks (included): 19 18 17 16 15 14 13 J3 D pH/ORP Pt 100 - IN Pt 100 - GND NC NC NC NC Pt 100 - SENSE C WARNING 12 11 10 9 8 7 6 5 4 3 2 1 J1 B J2 RELAY 1 - POLE RELAY 2 - NO RELAY 1 - NO RELAY 1 - NC RELAY 2 - POLE RELAY 2 - NC GROUND N L LIQUID GND A A. 3 pin connector (for power supply) B. 9 pin connector (for relays) C. 7 pin connector (for temperature sensor) D. BNC connector (for pH or ORP electrode) A. 1. L- Live 2. N- Neutral 3. E- Earth Ground C. 13. Pt 100- SENSE 14. Pt 100- IN 15. Pt 100-GND 16. NC 17. NC 18. NC 19. NC BNC for pH/ORP + 4 - 20 mA - 4 - 20 mA B. 4. Liquid GND 5. RELAY 2- NC 6. RELAY 2- POLE 7. RELAY 2- NO 8. RELAY 1- NC 9. RELAY 1- POLE 10. RELAY 1- NO 11. ­ 4 to 20 mA 12. +4 to 20 mA -4- D. 3.3 Wiring Caution: Ensure electrical mains is disconnected before proceeding. · · · 1. Connect the power supply to the three-pin terminal block (D) VAC protective ground wire = 3 VAC neutral wire = 2 VAC live wire = 1 The alpha pH 200 controller accepts voltages from 85 to 260 VAC, 50/60 Hz or DC. 2. Connect the Pt 100 leads to terminals 13 and 15 (terminal block B). Either wire can be connected to either terminal. Terminals 13 and 14 must be shunted unless using a 3-wire RTD. NOTE: pH 200 is factory set for manual temperature compensation. ATC can be selected in Program P3.3. 3. Slide the BNC connector of the pH (ORP) probe to the BNC connector on the back of the controller. Turn the notches of the connector until they lock into place. 4. Power on the controller. The display automatically shows the pH (ORP) reading, and the pH (ORP) annunciator lights. NOTE: In the event Pt 100 is not connected or the connection is broken in the ATC mode, the pH/ORP display flashes to alert you. -5- 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. BACK VIEW 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 -6- Threaded rod Catch approx. 100 approx. 154.20 4 MEASUREMENT MODE Press MODE to toggle between: · pH (or ORP) measurement mode · Temperature measurement mode pH (ORP) measurement mode The controller starts up in the mode when last powered off (pH or ORP). The appropriate annunciator lights up. NOTE: Select pH or ORP measurement mode in Setup program P3.1. 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. The oC annunciator lights when you are measuring temperature. See Setup program P3.3 for further instructions. -7- 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 alpha pH 200 controller features two separate passwords: · pH (ORP) 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 and keys to change the second digit to the correct number (1 or 2). Press ENTER. 4. Press the and keys to change the third digit to the correct number (1 or 2). Press ENTER. The whole display will now flash to prompt for its confirmation. If you enter an incorrect digit, press MODE to back up. 5. Press ENTER again to confirm your password. You are now in Calibration mode or Setup mode, depending on password entered. -8- P . P .000 P .000 .0 P 10 P .020 P 11 .0 .022 P P .011 .022 P -9- 6 PH CALIBRATION The alpha pH 200 controller features seven preset buffer values (pH 1.68, 4.01, 6.86, 7.00, 9.18, 10.01, 12.45) for quick auto-calibration at one or two points. The first calibration point must be pH 6.86 or 7.00. When you calibrate this instrument, you need to use FRESH standard pH buffer solution that matches these values. NOTE: If you are in ORP mode, see Program 3.0 for instructions on switching to pH mode. 1. 2. 3. Key in the password "011" using the method described in Section 5. The display scrolls BUFF and either pH 7.00 or 6.86. You must calibrate at one of these two buffers for the first calibration. Use / keys to select pH 7.00 or 6.86. Make sure the electrode is in the buffer solution. In ATC mode, you must also immerse the temperature sensor in the buffer solution. In the symmetrically high-resistance measurement mode, you must also immerse the solution ground (potential equalization pin) in the buffer. Allow the electrode time to stabilize. Press ENTER. The instrument will blink with the uncalibrated pH value corresponding to the mV output of your pH probe. Press ENTER to confirm the buffer value. The display blinks the calibrated value twice, shows "DONE" and moves to the next buffer. 4. 5. 6. NOTE: Buffer must be within ±1.5 pH of the value you are calibrating to or Err1 will display. To clear the Err1 display and return to calibration mode, press / keys together. NOTE: If the ATC mode has been selected and the Pt 100 is not connected or if it is broken, the pH display will flash. Under this condition, the calibration will not be allowed. - 10 - 70 .0 bU f f ENTER 6.9 7 ENTER 70 .0 dn oe ENTER .0 10 1 bU f f ENTER 3 10.0 ENTER 10.0 1 dn oe ENTER - 11 - If you are performing 1-point calibration, press /keys together to return to measurement mode. If you are performing two-point calibration, proceed with the next step. 7. Use /keys to select the next buffer value (pH 1.68, 4.01, 9.18, 10.01 an ...