Instruction Manual C401/301/201/102/101 Portable Colorimeter 68X357704 Rev. 0 08/04 Technology Made Easy ... Preface This manual functions in two ways: first as a step by step guide to help you operate the waterproof C401/301/201/102/101 Colorimeter; second, it serves as a handy reference guide. It contains basic instructions that you must follow during the operation, care and maintenance of the instrument. The safety protection provided by this equipment may be impaired if it is used in a manner not described in this manual. It is recommended that all operators should read this manual prior to working with this instrument. 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 © 2004 All rights reserved. Eutech Instruments Pte Ltd Oakton Instruments Rev. 0 08/04 TABLE OF CONTENTS 1 INTRODUCTION .................................................................................................................. 1 1.1 1.2 1.3 1.4 2 UNPACKING C401/301/201/102/101 COLORIMETER AND ACCESSORIES ........................... 2 DISPLAY ............................................................................................................................ 3 KEYS AND FUNCTIONS....................................................................................................... 4 BATTERY INSTALLATION ................................................................................................... 5 MEASUREMENT .................................................................................................................. 6 2.1 GENERAL INFORMATION.................................................................................................... 6 2.2 PREPARATION OF SAMPLE VIAL ........................................................................................ 7 2.3 MEASUREMENT PROCEDURE ............................................................................................. 7 2.4 CHLORINE, FREE & TOTAL (0 ­ 6PPM CL2) ........................................................................ 9 2.4.1 Sample Collection ................................................................................................... 11 2.4.2 Sample Measurement .............................................................................................. 11 2.4.3 Interferences ........................................................................................................... 12 2.4.4 Correcting for dilution ............................................................................................ 13 2.4.5 Accuracy Check / User Calibration ........................................................................ 13 2.4.6 Chemistry ................................................................................................................ 14 2.5 CYANURIC ACID (5-90 PPM) ............................................................................................ 15 2.5.1 Sample Collection ................................................................................................... 17 2.5.2 Sample Measurement .............................................................................................. 17 2.5.3 Interferences ........................................................................................................... 17 2.5.4 Accuracy Check / User Calibration ........................................................................ 17 2.5.5 Chemistry ................................................................................................................ 18 2.6 PH (5.9-8.2 PH UNITS) ..................................................................................................... 19 2.6.1 Sample Collection ................................................................................................... 21 2.6.2 Sample Measurement .............................................................................................. 21 2.6.3 Interferences ........................................................................................................... 21 2.6.4 Accuracy Check / User Calibration ........................................................................ 21 2.6.5 Chemistry ................................................................................................................ 22 3 CALIBRATION.................................................................................................................... 23 3.1 3.2 3.3 3.4 3.5 CALIBRATION PROCEDURE .............................................................................................. 23 CHLORINE, FREE & TOTAL .............................................................................................. 24 CYANURIC ACID .............................................................................................................. 27 PH.................................................................................................................................... 30 RESTORING FACTORY CALIBRATION ............................................................................... 33 4 5 TROUBLESHOOTING GUIDE ......................................................................................... 35 ROUTINE MAINTENANCE .............................................................................................. 36 5.1 VIALS ­ HANDLING, CLEANING AND CARE ..................................................................... 36 6 7 8 9 ACCESSORIES .................................................................................................................... 37 SPECIFICATIONS .............................................................................................................. 38 WARRANTY ........................................................................................................................ 39 RETURN OF ITEMS ........................................................................................................... 39 Introduction C401/301/201/102/101 1 INTRODUCTION Thank you for selecting the waterproof portable C401/301/201/102/101 Colorimeter. Depending on the model selected, the C401/301/201/102/101 Colorimeter allows you to measure up to four parameters - namely the pH, Cyanuric acid, Free Chlorine and Total Chlorine of an aqueous sample in the field. You have one of the following models: · C101: pH measurement · C102: Cyanuric Acid measurement · C201: Free Chlorine and Total Chlorine measurement · C301: Free Chlorine, Total Chlorine and pH measurement · C401: Free Chlorine, measurement Total Chlorine, Cyanuric Acid and pH 1 Introduction C401/301/201/102/101 1.1 Unpacking C401/301/201/102/101 Colorimeter and Accessories The table below indicates the items that you should find in your Colorimeter shipment. Item 1. Field Portable C401/301/202/102/101Colorimeter with 4 "AAA" batteries 2. Instruction Manual 3. Instrument Carrying Case 4. Empty Vial 5. pH Indicator (Phenol Red) Reagent Kit (Only for C101, C301, C401) 6. Cyanuric Acid Reagent Kit (Only for C102, C401) 7. Free Chlorine DPD Reagent Kit (Only for C201, C301, C401) 8. Total Chlorine DPD reagent Kit (Only for C201, C301, C401) Quantity 1 1 1 4 1 1 1 1 Remove C401/301/201/102/101 Colorimeter from the packing carton. Carefully inspect all items to ensure that no visible damage has occurred during shipment. If the items you received do not match your order, please contact your nearest distributor immediately. WARNING: Extra care should be taken when unpacking, opening, and handling the sample vials. Surface scratches or finger smudges on the vial surface may cause measurement errors. Handle these items by their caps only. Batteries provided with the meter package are to be installed prior to use. See Section 1.4 Battery Installation on page 5. In the next page, Figure 1 depicts the meter. The three main components of the instrument are the sample well, the display, and the keypad. The following sections will describe the functionality of the display and the keypad. The proper use of the instrument will be discussed in later sections. 2 Introduction C401/301/201/102/101 Sample Vial Sample Well Liquid Crystal Display Meter Index Marking Keypad Figure 1: Parts of C401/301/201/102/101Colorimeter 1.2 Display All the LCD segments and annunciators that can appear on the display are shown in Figure 2. The display is used for reporting the colorimeter reading, communicate error messages and provide guidance for the operation of the instrument. Calibration Mode Annunciator Battery Indicator CAL ppm pH Units of Measure 14-segment Liquid Crystal Display Figure 2: Customized LCD when switched on 3 Introduction C401/301/201/102/101 1.3 Keys and Functions The keypad has four keys: ON/OFF, MODE, ZERO and READ/ENTER. Keys ON/OFF MODE Functions ZERO READ / ENTER Powers on and shuts off the meter. With the auto switch-off feature the meter automatically shuts off 10 minutes after last key press. Selects the test to be performed. Selects the calibration point in an incremental circular manner during calibration. Blanks the instrument (sets the meter to zero) before chemical reagent is added. Initiates the calibration mode when used with the ON/OFF key. Aborts the calibration process without saving. Exits the calibration mode. Initiates the measurement of the sample after the chemical reagent has been added. Confirms the test selection. WATERPROOF READ ENTER ZERO MODE ON OFF Figure 3: C401/301/201/102/101 Keypad 4 Introduction C401/301/201/102/101 1.4 Battery Installation Four AAA-sized batteries are included in your meter's packaging: 1. Use a Philips screwdriver to remove the two screws holding the battery cover. See Figure 4 : Battery Installation. 2. Remove the battery cover. 3. Insert the batteries. Follow the diagram inside the cover for correct polarity. 4. Replace the battery cover onto its original position using the two screws removed earlier. 5. The meter is now ready to operate. Philips Screws Battery cover Four 'AAA'-sized batteries Figure 4 : Battery Installation NOTE: Dispose used batteries in accordance with your local regulations. 5 Measurement C401/301/201/102/101 2 MEASUREMENT 2.1 General Information The waterproof C401/301/202/102/101Colorimeter allows you to measure up to four parameters - namely the pH, Cyanuric acid, Free Chlorine and Total Chlorine of a sample and reports the results in appropriate units (ppm or pH). Each specific measurement has its own range as listed in the specifications. The meter will go through a power sequence as shown below. Meter's Model Number Meter's Revision Number Measurement Mode Selection Figure 5: Power Up Sequence An accurate colorimeter measurement depends on good measurement techniques. Factors such as clean sample vials, positioning of vial in the sample well, covering the vial with the light shield cap, meter calibration, handling of meter, and others, have to be taken into consideration. NOTE: Do not pour liquid directly into the sample well of the instrument. Always use a vial. The instrument will only accurately measure the sample when vials sealed with the black caps are used. The black cap serves as both seal and a light shield. NOTE: Do not attempt to clean the sample well. The optics may be damaged. NOTE: This instrument is designed to measure solutions contained in the custom made glass vials and therefore the use of other type of sample vials or sample cells may result in inaccurate measurements. 6 Measurement C401/301/201/102/101 2.2 1. 2. 3. Preparation of Sample Vial Obtain a clean and dry sample vial (Figure 6). Take care to handle the sample vial by the top. Rinse the vial with approximately 10 ml of the sample water, capping the vial with the black screw cap and gently inverting it several times. Discard the used sample and repeat the rinsing procedure two more times. Fill the rinsed vial with the remaining portion (approximately 10 ml) of the grab sample up to the mark indicated in the vial. Cap the vial with the supplied black screw cap. Figure 6: Sample Vial 4. 5. 6. 2.3 1. 2. Wipe the vial with a soft, lint-free cloth. Ensure that the outside of the vial is dry, clean and free from smudges. You are now ready to place the vial into the meter for measurement. Measurement Procedure Place C401/301/202/102/101Colorimeter on a flat and level surface. Place the sample vial inside the sample well and align the vial's mark with the meter's index mark. See Figure 8. Align ...