Instruction Manual CON 500 LCD Transmitter Conductivity Transmitter with Display lpha CON500 MEAS READY 1413 . µS °C ATC 2-wire Conductivity Transmitter 68X216867 Technology Made Easy ... Rev 0 11/04 Preface This manual serves to explain the use of the CON 500 transmitter. It functions in two ways, firstly as a step by step guide to help you to operate the transmitter. Secondly, it serves as a handy reference guide. It is written to cover as many anticipated applications of the transmitter as possible. If there are doubts in the use of the transmitter, please do not hesitate to contact the nearest Authorized Distributor. Eutech Instruments will not accept any responsibility for damage or malfunction to the transmitter caused by improper use of the instrument. The information presented in this manual is subject to change without notice as improvements are made, and does not represent a commitment on the part of Eutech Instruments. Copyright © 2004 All rights reserved Eutech Instruments Rev 0 11/04 TABLE OF CONTENTS 1 2 INTRODUCTION ................................................................................... 1 PREPARATION .................................................................................... 2 2.1 POWER SUPPLY REQUIREMENTS (SL2 POSITION)........................................... 3 2.2 CONNECTING THE ELECTRODE AND TEMPERATURE SENSOR (SL1 POSITION) .... 3 2.2.1 To connect the Conductivity electrode: ............................................. 3 2.2.2 To connect ATC temperature sensor: ............................................... 4 3 INSTALLATION .................................................................................... 5 3.1 3.2 3.3 MECHANICAL DIMENSIONS ............................................................................ 5 WALL MOUNT.............................................................................................. 5 PANEL MOUNT ............................................................................................ 6 4 DISPLAY AND KEYPAD FUNCTIONS ................................................ 7 4.1 4.2 DISPLAY ..................................................................................................... 7 KEYPAD ...................................................................................................... 8 5 CALIBRATION ...................................................................................... 9 5.1 5.2 5.3 IMPORTANT INFORMATION ON TRANSMITTER CALIBRATION ............................... 9 TEMPERATURE CALIBRATION ...................................................................... 11 CONDUCTIVITY CALIBRATION ...................................................................... 12 6 ADVANCED SETUP FUNCTIONS ..................................................... 13 6.1 RANGE AND ZOOMING SELECTION SETTING.................................................. 13 6.2 TEMPERATURE COMPENSATION SETTING ..................................................... 15 6.2.1 Automatic Temperature Compensation .......................................... 15 6.2.2 Manual Temperature Compensation............................................... 16 6.3 HOLD CURRENT SETTING.......................................................................... 18 6.4 OUT-OF-RANGE CURRENT SETTING ............................................................ 18 6.5 TEMPERATURE COEFFICIENT AND NORMALIZATION TEMPERATURE SETTING .... 19 6.5.1 Setting the temperature coefficient ................................................. 19 6.5.2 Setting the normalization temperature ............................................ 19 6.6 CELL CONSTANT SETTING .......................................................................... 20 6.7 LINE RESISTANCE SETTING ......................................................................... 20 6.8 VIEWING CALIBRATION POINT...................................................................... 21 6.9 VIEWING THE ELECTRODE DATA.................................................................. 21 6.10 RESET FUNCTION ...................................................................................... 22 7 8 FACTORY DEFAULT SETTINGS ...................................................... 23 TROUBLE SHOOTING GUIDE........................................................... 24 9 10 11 12 SPECIFICATIONS .............................................................................. 25 ACCESSORIES............................................................................... 26 WARRANTY .................................................................................... 27 RETURN OF ITEMS ........................................................................ 27 Instruction Manual CON 500 1 INTRODUCTION Thank you for selecting a CON 500 LCD Transmitter. This isolated output 4-20mA transmitter is a sturdy microprocessor-based instrument that measures conductivity and temperature and transmits its output via the 2-wire power supply loop. This transmitter has many user-friendly features ­ all of which are completely accessible through the water-resistant membrane keypad. Your transmitter includes an instruction manual and a warranty card. Please read this manual thoroughly before operating your transmitter. lpha CON500 MEAS READY 1413 . µS °C ATC 2-wire Conductivity Transmitter -1- Instruction Manual CON 500 2 PREPARATION Remove screws from the four corners at the back of the Transmitter, and remove back cover. Connectors should be exposed as follows: NC NC NC Figure 1 ­ Connection Guide All wiring is done on 2 detachable connectors: ­ 1. 2. 9-pin connector (located on SL1 position) for Conductivity electrode and temperature sensor; & 3-pin connector (located on SL2 position) for power supply. Using a suitable screwdriver, loosen screws from top of connector. When inserting the wires, always hold connector with top screws facing up. -2- Instruction Manual CON 500 2.1 Power Supply Requirements (SL2 Position) The CON 500 transmitter requires a 12 to 24V DC power supply. Other Transmitters and/or a chart recorder may be connected in the loop. 1. 2. Insert positive loop wire from power supply to pin 1, tighten screw. Insert negative loop wire to pin 2, tighten screw. This wire may be linked to a chart recorder or to negative terminal of power supply. Alpha CON 500 1 Power Supply 2 Chart Recorder 2.2 Connecting the Electrode and Temperature Sensor (SL1 Position) To connect the Conductivity electrode: 2.2.1 The CON 500 transmitter accepts any industrial electrodes for conductivity measurements and they are usually offered with bare wires. 1. 2. Insert the electrode's conductivity wire Low into pin 3 of SL1 connector. Tighten the screw. Insert the electrode's conductivity wire High into pin 4 of SL1 connector. Tighten the screw. Pt 100 Input wire Pt 100 Sense wire Pt 100 Return wire Conductivity wire High Conductivity wire Low Shield wire To Electrode -3- Instruction Manual CON 500 2.2.2 To connect ATC temperature sensor: For Automatic Temperature Compensated (ATC) Conductivity readings, an in-built temperature sensor is usually integrated in the industrial conductivity electrodes. Otherwise, a separate 100 Pt RTD temperature probe can be used. 3 wire temperature sensor 1. 2. 3. Insert the Pt100 input wire to pin 5 of SL1 connector. Tighten the screw. Insert the Pt100 sense wire to pin 6 of SL1 connector. Tighten the screw. Insert the Pt100 return wire and the shield wire to pin 7 of SL1 connector. Tighten the screw. Take a small length of wire and short pins 5 and 6 of SL1 connector. Insert Pt 100 sense wire into pin 6 of SL1 connector and tighten the screws. Insert Pt 100 return wire and the shield wire to pin 7 of SL1 connector. Tighten the screw. 2 wire temperature sensor 1. 2. IMPORTANT: It is necessary to connect the SHIELD wire to the pin 7 as stated above to eliminate possible oscillation of the conductivity and/or temperature reading due to electrical noise or interference. Ensure that no bare wires are exposed and all screws are tightened for proper contact. -4- Instruction Manual CON 500 3 INSTALLATION 3.1 Mechanical Dimensions lpha CON500 2-wire Conductivity Transmitter 3.2 Wall Mount -5- Instruction Manual CON 500 3.3 Panel Mount 1. Prepare panel cut-out of 92.0 mm by 92.0 mm Panel (side) 2. Remove back cover of transmitter and slide it through panel cut-out 4. Thread rods through lugs until transmitter is held in place against panel 3. Attach lugs to either side of transmitter -6- Instruction Manual CON 500 4 DISPLAY AND KEYPAD FUNCTIONS 4.1 Display The LCD has a primary and secondary display. · The primary display shows the measured conductivity value. · The secondary display shows the measured temperature. In Calibration mode, measured conductivity values are displayed here. Primary Display (Upper Display) 1 2 3 4 SETUP 16 15 14 MEAS CAL R. % ON K= -. . . 888 -. . . 1888 10 Secondary Display (Lower Display) 9. ATC - Automatic Temp. Compensation 10. K = - Cell Constant indicator. 11. ERR ­ Wrong key press error indicator mS µS 5 6 7 8 13 ERR °C ATC 9 12 11 1. SETUP - Setup mode indicator 2. MEAS - Measurement mode indicator 3. CAL - Calibration mode indicator 4. R. ­ Line Resistance in Ohms 5. % - Temperature Coefficient indicator 6. mS - Milli Siemens indicator 7. µS - Micro Siemens indicator 8. °C - Temperature indicator 13. - Calibration standard indicator 14. ON /OFF­ READY set up enable/disable indicator. 15. HOLD ­ Hold indicator 16. READY ­ Ready indicator 12. - Electrode indicator -7- Instruction Manual CON 500 4.2 Keypad lpha CON500 MEAS READY 1413 . µS °C ATC 2-wire Conductivity Transmitter The four-button keypad allows easy and quick operations of the Transmitter. Key CAL Function Brings you directly into the Calibration mode. If you were in Conductivity Measurement mode, press CAL to enter Conductivity Calibration mode. / To scroll through the various submenus To increment/decrement values or toggle between options (in the SETUP/CAL modes) When pressed together, serves as escape function to return to MEAS mode from any point (CAL or SETUP modes). ENT To confirm your calibration values in Calibration mode. To confirm selections in SETUP mode. While in MEAS mode, pressing ENT takes you directly to SETUP submenu NOTE: Error indicator `ERR' will be displayed if an invalid key is pressed during a particular operation. -8- Instruction Manual CON 500 5 CALIBRATION 5.1 Important Information on Transmitter Calibration Calibration should be carried when you are using your transmitter with a new electrode for the first time or when you suspect that the transmitter/electrode is out of calibration. Your transmitter allows you to perform temperature calibration and conductivity calibration. As temperature readings affect the accuracy of conductivity measurements, it is recommended that temperature calibration should be carried out only if the temperature value displayed on the transmitter is different from that of a calibrated thermometer. A temperature offset calibration of ± 5 °C from the default reading is allowed. Once a temperature calibration is performed, conductivity calibration should be carried out to ensure the accuracy of conductivity measurements are maintained. Your transmitter has up to six selectable conductivity measuring ranges. The selection for the sixth range, range 6 (0.00 to 199.9 mS/cm), only appears in the Setup mode if the cell constant is selected to be K =1.0 or K =10 whereas range 1(0.00 to 19.99uS/cm), will only appear when cell constant is selected to be K = 0.1 or K = 1.0. Other wise, the selection will be limited to five ranges only. You can only calibrate one point in the measuring range that you have selected for your process application. You have to recalibrate your transmitter every time you change the measuring range since the calibration data of your transmitter will be erased every time a new measuring range is selected. During conductivity calibration, the transmitter allows a calibration window of ± 40% from the measured default reading of the calibration standard. The minimum allowable calibration point is 10% of the full scale reading of the range selected. For best results, select a standard value close to the sample value you are measuring. Alternatively use a calibration solution value that is approximately 2/3 the full-scale value of the measurement range you plan to use. The following table 1 lists the corresponding conductivity ranges. You should calibrate, in the range that you have selected, using a solution that falls between the values in the "recommended calibration solution range" column. -9- Instruction Manual CON 500 Table 1 Conductivity Measuring Range 0.00 0.0 0 0.00 0.00 0.0 19.99 µS 199.9 µS 1999 µS 10.00 mS 19.99 mS 199.9 mS Recommended Calibration Solution Ran ...