Instruction Manual lpha-DO 1000 Dissolved Oxygen Controller/Transmitter Technology Made Easy ... 68X242101 Rev 3, 06/04 Preface This manual serves to explain the use of the lpha-DO1000 series Dissolved Oxygen controller/transmitter. The manual functions in two ways: firstly as a stepby-step guide to help the user operate the instrument. Secondly, it serves as a handy reference guide. This instruction manual is written to cover as many anticipated applications of the lpha-DO1000 Dissolved Oxygen controller/transmitter. If you have doubts in the use of the instrument, please do not hesitate to contact the nearest Eutech Instruments' Authorised Distributor. The information presented in this manual is subject to change without notice as improvements are made, and does not represent a commitment on part of Eutech Instruments Pte Ltd. Eutech Instruments cannot accept any responsibility for damage or malfunction of the unit due to improper use of the instrument. Copyright ©1998 All rights reserved. Eutech Instruments Pte Ltd. Rev 3, 06/04 Operating Manual alpha DO 1000 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. Operating Manual alpha DO 1000 TABLE OF CONTENTS 1 1.1 1.2 INTRODUCTION ..................................................................................... 1 Description of Unit................................................................................................................1 Applications...........................................................................................................................1 2 2.1 2.2 ASSEMBLY AND INSTALLATION ......................................................... 2 Measurement and Control System .....................................................................................2 Unit Dimensions ....................................................................................................................2 3 3.1 3.2 ELECTRICAL CONNECTION ................................................................. 3 Connection Diagram.............................................................................................................3 Back Panel .............................................................................................................................4 4 4.1 OVERVIEW.............................................................................................. 6 Keypad and Display..............................................................................................................6 4.1.1 Keypad ......................................................................................................................6 4.1.2 Display......................................................................................................................6 Function Groups ...................................................................................................................7 4.2.1 How to view operating parameters without access to change them: ......................7 Control Concept....................................................................................................................8 4.2 4.3 5 5.1 MEASUREMENT..................................................................................... 9 Display in Measurement mode ............................................................................................9 5.1.1 Check electrode performance...................................................................................9 5.1.2 Checking set points...................................................................................................9 Security Codes.....................................................................................................................10 5.2.1 How to enter and change parameters in Calibration mode ..................................10 5.2.2 Clearing the Calibration security code from the display.......................................10 5.2.3 How to enter and change parameters in Advanced Setup mode ...........................10 5.2.4 Clearing the Advanced Setup Security Code from the Display .............................11 5.2 6 6.1 6.2 CALIBRATION MODE .......................................................................... 12 Dissolved Oxygen Calibration ...........................................................................................12 Dissolved Oxygen Calibration in % Saturation of Oxygen ...........................................13 7 7.1 7.2 7.3 7.4 ADVANCED SET-UP MODE................................................................. 15 Electrode Offest (OFS), Salinity and Pressure sub-function .........................................15 Setting the Salinity Value...................................................................................................16 Setting the Pressure Value (mmHg or Pascal) ................................................................16 Setting Temperature (Set °C) sub-function .....................................................................17 7.4.1 Selecting Automatic or Manual Temperature Compensation................................17 7.4.2 Temperature calibration (ATC mode only)............................................................17 7.4.3 Setting Manual Temperature Compensation .........................................................18 Control Relay A/Control Relay B (SP1/SP2) sub-function ............................................18 7.5.1 Entering the Set point 1 (or Set point 2) sub-function ...........................................19 7.5.2 Selecting the Set Point Values................................................................................19 7.5.3 Choosing High or Low Set-points ..........................................................................19 7.5.4 Selecting a Hysteresis (Dead Band) Value ............................................................20 7.5.5 Setting an On-Delay Time Lag...............................................................................20 7.5.6 Setting an Off-Delay Time Lag...............................................................................21 Controller (Cntr) Sub-Function........................................................................................22 7.5 7.6 Operating Manual alpha DO 1000 7.7 7.8 7.9 7.6.1 Entering the Controller sub-function .....................................................................22 7.6.2 Choosing the controller type (limit or proportional).............................................22 7.6.3 Choosing Break/Make Contact Relay Type ...........................................................23 7.6.4 Selecting Proportional Range Value, Xp ...............................................................23 7.6.5 Maximum Pulse Length (tPL) or Maximum Frequency (FPF) .............................24 Current Output (rng) sub-function ..................................................................................25 7.7.1 Entering Current Output sub-function ...................................................................25 7.7.2 Choosing the Output Type......................................................................................25 7.7.3 Selecting Dissolved Oxygen Value at 0(4)mA........................................................25 7.7.4 Selecting Dissolved Oxygen value at 20mA ...........................................................26 Configuration (ConF) sub-function ..................................................................................26 7.8.1 Entering the Configuration sub-function ...............................................................26 7.8.2 Selecting the Units Of Measure (mg/l, ppm or %).................................................27 7.8.3 Selecting the Alarm Time Lag ................................................................................27 7.8.4 Selecting Steady or Pulse Contact for the Alarm Relay ........................................27 7.8.5 Selecting Dissolved Oxygen Probe Type................................................................28 7.8.6 Reverting to Factory Default Settings....................................................................28 Calibration (CAL) sub-function........................................................................................29 7.9.1 Entering Calibration mode from Advanced Set-up mode ......................................29 8 8.1 8.2 AUTO/MANUAL MODE ........................................................................ 30 Auto Mode (Mode After Switch-On) ................................................................................30 Manual Mode ......................................................................................................................30 9 10 10.1 TECHNICAL SPECIFICATIONS ........................................................... 32 ACCESSORIES..................................................................................... 33 Assembly Accessories .........................................................................................................33 11 11.1 11.2 11.3 11.4 GENERAL INFORMATION ................................................................... 34 Warranty .............................................................................................................................34 Packaging.............................................................................................................................34 Return of Goods..................................................................................................................34 Guidelines for Returning Unit for Repair .......................................................................34 12 12.1 12.2 12.3 12.4 APPENDICES........................................................................................ 35 Appendix 1 ­ Jumper Positions for 110 or 230 volts ......................................................35 Appendix 2 ­ Salinity vs Temperature (@ 760 mmHg) .................................................36 Appendix 3 - Explanation on the Function of Hysteresis ...............................................37 Appendix 4 ­ Limit and Proportional Control Functions..............................................38 1 1.1 INTRODUCTION Description of Unit Thank you for purchasing Eutech's ¼ DIN alpha-1000 series Dissolved Oxygen process controller. This unit is used for measuring either in % saturation, mg/l or ppm, one at a time, and the operational mode is switchable from the menu. You can use this unit to measure Dissolved Oxygen with limit or proportional control. This controller has many user-friendly and safety features which include: · · · · · · · · · · · · · · Menu-driven program that simplifies set-up Built-in Memory backup to ensure that calibration data and other information are not erased if power supply fails Push-button one-/two-point calibration and electrode offset adjustment from the keypad Automatic temperature compensation (ATC) Manual temperature compensation with independent setting for calibration and process temperature 0 to 1999 second time delay adjustment on all relays ­ minimise false alarms Separately adjustable high and low set point hysteresis (dead bands) prevent chattering of relays around the set points Three control modes: limit control, proportional pulse length or proportional pulse frequency Large dual display LCD for easy reading with clear multiple annunciators, alarm status and operational message annunciators Two switching contacts as set-point triggering relays and an alarm output relay Separate alarm relay alerts you when set points have exceeded the limits and if the Pt100 wires are broken or disconnected during the ATC function Hold function freezes output current (0/4...20mA) and releases control relays LED indicators signal control activities to monitor controller status from a distance Protection against electromagnetic interference - galvanically isolated 0/4 20mA output provides safety for data logging and control purposes 1.2 Applications Use this controller in panel mounted enclosures for applications such as water treatment and monitoring, galvanic-decontamination, chemical processing, food processing, clean or waste water control and neutralization process. Operating Man ...