Instruction Manual CON 510 Bench Conductivity/TDS Meter 68X090820 Rev 2 01/04 Technology Made Easy ... Preface This manual serves to explain the use of the CON 510 bench meter. It functions in two ways, firstly as a step by step guide to help you to operate the meter. Secondly, it serves as a handy reference guide. It is written to cover as many anticipated applications of the meter as possible. If there are doubts in the use of the meter, please do not hesitate to contact the nearest Authorized Distributor. Eutech Instruments/ Oakton Instruments cannot accept any responsibility for damage or malfunction to the meter 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 Pte Ltd/ Oakton Instruments. Note: Eutech Instruments Pte Ltd/ Oakton Instruments reserves the right to make improvements in design, construction, and appearance of our products without notice. Copyright © 2002 All rights reserved. Eutech Instruments Pte Ltd Oakton Instruments Rev 2 01/04 TABLE OF CONTENTS 1 2 2.1 2.2 INTRODUCTION DISPLAY AND KEYPAD FUNCTIONS Display Keypad 1 1 1 2 3 3.1 3.2 3.3 3.4 PREPARATION Conductivity Electrode Information Connecting the probe to the meter Connecting the AC/DC Adapter Connecting the Electrode Holder 3 3 3 3 4 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 CALIBRATION Important Information on Meter Calibration Preparing the Meter for Calibration Calibration with Conductivity Standards and TDS factor Calibration for TDS Standards Directly Selection of Automatic or Manual Calibration Automatic Calibration Manual Calibration Temperature Calibration 5 5 6 6 6 6 7 8 9 5 5.1 5.2 5.3 5.4 5.5 MEASUREMENT Automatic Temperature Compensation Manual Temperature Compensation Taking Measurements Using Manual Ranging Function HOLD Function 10 10 11 11 12 12 6 6.1 6.2 MEMORY AND DATA INPUT FUNCTIONS Memory Input Memory Recall 13 13 13 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 SETUP FUNCTIONS SETUP Mode Overview P1.0: Viewing Calibration Data P2.0: Viewing Electrode Diagnosis P3.0: Meter Configuration P4.0: Temperature P5.0 Mode of calibration P6.0 Selecting the cell constant P7.0: Resetting to factory default settings 14 14 15 16 16 18 20 21 22 8 9 PROBE CARE AND MAINTENANCE TROUBLE SHOOTING GUIDE 23 24 24 25 26 27 27 28 29 30 30 10 ERROR MESSAGES 11 SPECIFICATIONS 12 ACCESSORIES 13 ADDENDUM 1: CALIBRATION TIPS 14 ADDENDUM 2: CALCULATING TDS CONVERSION FACTORS 15 ADDENDUM 3: CALCULATING TEMPERATURE COEFFICIENTS 16 ADDENDUM 4: METER FACTORY DEFAULT SETTINGS 17 WARRANTY 18 RETURN OF ITEMS Instruction Manual CON 510 1 INTRODUCTION Thank you for selecting the CON510 bench meter. This meter is a microprocessor-based instrument that is designed to offer advanced yet user-friendly features for discerning users - ideal for laboratory and plant applications. It measures Conductivity, Total Dissolved Solids (TDS) and temperature (oC/oF). It incorporates large memory capacity of up to 50 data sets and user-customisable functions ­ all are accessible through the membrane tactile keypad. A pull-out reference card (concealed at bottom of meter) provides a quick handy guide to the functions of the individual keys as well as useful troubleshooting hints for your reference. The meter is packaged with a 2-ring Stainless Steel Ultem-body Conductivity/TDS electrode (cell constant K = 1.0) with built-in temperature sensor (Order Code: EC-CONSEN91W/ 35608-50) and an integral electrode holder. For the list of accessories refer to the Section 12 on Accessories. Please read this manual thoroughly before operating your meter. 2 2.1 DISPLAY AND KEYPAD FUNCTIONS Display The LCD (Liquid Crystal Display) has an upper and lower display. The upper display shows the measured conductivity or TDS reading. The lower display shows the measured temperature. The display also shows error messages, keypad functions and program functions. Upper Display 1 2 3 4 SETUP 17 16 15 14 13 MEAS CAL MEM mS READY HOLD ON OFF K= -... 8888 ERR O µS ppt ppm O 5 6 7 8 CF 10 ATC 11 12 Lower Display 9 1. SETup mode indicator 2. MEASurement mode indicator 3. CALibration indicator 4. MEMory mode indicator 5. millisiemens indicator (mS) 6. microsiemens indicator (µS) 7. parts per thousand indicator (ppt) 8. parts per million indicator (ppm) 9. Automatic Temperature Compensation indicator 10. Temperature scale indicator (oC oF) 11. ERRor indicator 12. Probe indicator 13. Calibration solution indicator 14. Cell constant indicator 15. ON / OFF indicator 16. HOLD indicator 17. READY indicator 1 Instruction Manual CON 510 2.2 Keypad The splash-proof membrane tactile keypad allows easy key entry. Each button, when pressed, has a corresponding graphic icon or indicator displayed on LCD. Some buttons have several functions depending on its mode of operation. Key ON/OFF Function Powers on and shuts off the meter. When you switch on the meter, the meter starts up in the mode that you last switched off from. For example, if you shut the meter off in TDS measurement mode, the meter will be in TDS measurement mode when you switch the meter on. Freezes the measured reading. To activate, press HOLD while in measurement mode. To release, press HOLD again. Selects the measurement parameter. Toggles between conductivity and TDS. Toggles between Calibration and Measurement mode. NOTE: Temperature calibration is available from conductivity/TDS calibration mode. ENTER function: Press to confirm values in Calibration mode and to confirm selections in SETUP mode. RANGE function: Press to enter manual ranging function. The MEAS indicator blinks while in manual ranging function. In Measurement mode: Press MI (memory input) to store values with its corresponding temperature values in the memory. Press MR (memory recall) to retrieve data from memory (Last-In-First-Out Sequence). In Calibration mode: Press to scroll through calibration values. In SETUP mode: Press to scroll through the setup subgroup program. Takes you into the SETUP mode. This mode lets you customize meter preference and defaults, and view calibration data and select cell constant. HOLD MODE CAL/MEAS ENTER / RANGE MI & MR / SETUP 2 Instruction Manual CON 510 3 3.1 PREPARATION Conductivity Electrode Information The CON510 bench meter is supplied with a Conductivity/TDS electrode (with a sturdy locking 6-pin connector). This Conductivity/TDS electrode (Code No: ECCONSEN91W/ 35608-50) comes with Stainless Steel rings, cell constant of K = 1.0, and a built-in temperature sensor for Automatic Temperature Compensation (ATC). Its specially designed Ultem-body housing has good chemicalresistant properties. It provides fast temperature response and reduces air bubble entrapment, which makes it easy to obtain accurate, stable readings. The probe materials used which have good chemical durability include: 1. Polyetherimide (Ultem) ­ protective probe guard 2. Polybutylterphalate (Valox) ­ sensor housing 3. Stainless Steel (SS 304) ­ 2 steel bands Proper use of probe is essential to ensure that the optimum measurement is taken in a short time. The removable protective plastic probe guard is meant for simple periodic maintenance and it must be kept in tact during measurement and calibration. Always immerse the probe beyond upper steel band. NOTE: DO NOT remove the protective probe guard during measurement and calibration as it may affect your readings. NOTE: We recommend that you do not submerge the probe above the protective probe guard. You can submerge the cable for brief periods of time, but not continuously. See Section 8 for "Probe Care and Maintenance" information. 3.2 1. 2. Connecting the Probe to the Meter Align the notch and 6 pins on the meter with the holes in the 6-pin connector. Push down and turn the locking ring clockwise to lock into place. To remove probe, turn the locking ring counterclockwise on probe connector until it is free. Pull probe gently away from the meter. CAUTION: DO NOT pull on the probe cord or the probe wires might disconnect. NOTE: Keep connectors clean. Do not touch connector with soiled hands. 3.3 Connecting the AC/DC Adapter Slide the AC/DC adapter jack into the socket marked DC of the meter until it is firmly seated. Ensure that the power to the AC/DC adapter is switched off. For AC/DC adapter always ensure that main voltage matches that of the adapter. AC/DC adapters used should have the following specifications or settings. Output: - Voltage: 9 VDC Current: 500 mA. NOTE: Ensure that the input main voltage (110/220 V) matches your adapter requirements before connection. 3 Instruction Manual CON 510 3.4 Connecting the Electrode Holder The integral electrode holder serves as a handy holder for a few electrodes or a separate temperature probe during measurement or when not in use. This bench meter's base plate has a side metal bar to which you can attach an integral swivel electrode holder. You can mount the electrode holder on either right or left side of the meter. To position the electrode arm: Use a Phillips screwdriver to remove the screw holding the electrode holder. Slide the side metal bar until the second screw slot lines up with the original screw hole. Use the screw removed earlier to secure the electrode holder into position. Note the side metal bar is reversible. If desired, remove screw holding electrode holder base and slide out of brackets, slide base into brackets on opposite side, and tighten screw. Body of Electrode Holder To install the electrode arm to the meter: To mount the electrode arm into the metal rod on the side bar, align the slot with the metal rod and base of electrode arm. Push it downwards until it fully sits into position. Avoid using excessive force when fixing or removing. The electrode arm is ready for use. NOTE: Move the base of the electrode holder if you wish to swing the electrode holder. To prevent the meter from toppling over causing accidental spills, DO NOT swing the body of the electrode holder. Base of Electrode Holder Side Metal Bar 4 Instruction Manual CON 510 4 4.1 CALIBRATION Important Information on Meter Calibration The CON 510 bench meter allows you to perform automatic calibration (only for Conductivity mode) or manual calibration (applicable to both Conductivity/TDS mode). The meter can calibrate either single point or multi-point up to 5 calibration points (manual mode) with a maximum of 1 point in each measurement range. Use single-point automatic calibration when calibrating using Conductivity standard calibration solutions (as mentioned in Section 4.6) as it suffices. When calibrating using uncommon or non-standard Conductivity/TDS calibration solutions which are freshly prepared, use the manual calibration option as it allows you to manually set to the desired value to match the standards being used. However if you are measuring sample values in more than one range, it is recommended to calibrate each of the ranges which you are measuring to ensure best meter accuracy. · · · If you are measuring in ranges near to or greater than 20 mS (10 ppt if TDS factor is set to 0.5), or near to or lower than 100 µS (50 ppm), calibrate the meter at least once a week to get specified ±1% Full Scale accuracy. If you are measuring in the mid-ranges and you washed the probe in de-ionized water and stored it dry, calibrate the meter at least once a month. If you take measurements at extreme temperatures, calibrate the meter at least once a week. 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. For example, in the 0 to 2000 µS/cm conductivity range, a 1413 µS/cm solution is a good solution for calibration. The following table lists all the corresponding conductivity and TDS ranges. You should calibrate each range using a suitable standards solution that falls between the values in the "recommended calibration solution range" column. Range Indicator r1 r2 r3 r4 r5 Conductivity Range 0 ­ 20.00 µS/cm 0 ­ 200.0 µS/cm 0 ­ 2000 µS/cm 0 ­ 20.00 mS/cm 0 ­ 200.0 mS/cm Recommended Calibration Solution Range 6.00 - 17.00 µS/cm 60.0 - 170.0 µS/cm 600 - 1700 µS/cm 6.00 - 17.00 mS/cm 60.0 - 170.0 mS/cm TDS Range 0 ­ 10.00 ppm 0 ­ 100.0 ppm 0 - 1000 ppm 0 ­ 10.00 ppt 0 - 100 ppt Recommended Calibration Solution Range 3.00 - 8.50 ppm 30.0 - 85.0 ppm 300 - 850 ppm 3.00 - 8.50 ppt 30.0 ­ 85.0 ppt When you recalibrate your meter, old calibration values are replaced on that specific measurement range. For example, if you previously calibrated the meter at 1413 µS/cm in the 0 - 2000 µS/cm range and you recalibrate at 1500 µS/cm (in the same range of 0 - 2000 µS/cm), the meter will replace old calibration ...