Instruction Manual
C401/301/201/102/101
Portable Colorimeter
Technology Made Easy ...
68X357704 Rev. 0 08/04
Page 1: ...Instruction Manual C401 301 201 102 101 Portable Colorimeter Technology Made Easy 68X357704 Rev 0 08 04 ...
Page 2: ...d 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 Instr...
Page 3: ...3 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 CALIBRATION PROCEDURE 23 ...
Page 4: ...er 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 Total Chlorine Cyanuric Acid and pH measurement ...
Page 5: ...ng 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 the...
Page 6: ...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 CAL ppm pH 14 segment Liquid Crystal Display Battery Indicator Calibration Mode Annunciator Units of Measure Figure 2 Customized LCD when switched on ...
Page 7: ...formed Selects the calibration point in an incremental circular manner during calibration ZERO 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 READ ENTER Initiates the measurement of the sample after the chemical reagent has been added ...
Page 8: ...re 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 loc...
Page 9: ...nt 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 s...
Page 10: ...th Ensure that the outside of the vial is dry clean and free from smudges 6 You are now ready to place the vial into the meter for measurement 2 3 Measurement Procedure 1 Place C401 301 202 102 101Colorimeter on a flat and level surface 2 Place the sample vial inside the sample well and align the vial s mark with the meter s index mark See Figure 8 Align index mark on the sample vial with the inde...
Page 11: ... sample vial used for blanking from the instrument and add the appropriate reagent to it Cap the vial and follow the appropriate instructions including the time required to develop the color for each type of reagents 9 Place the vial with the developed color into the sample well and align the mark on the vial with the mark on the instrument and press it down until it snaps fully into the optical h...
Page 12: ... displayed for Free Chlorine determination or CL T is displayed for Total Chlorine determination 3 Press the READ ENTER key to confirm the desired test parameter The meter will read STbY indicating it is in stand by mode waiting for either blanking or measurement READ ENTER 4 Select a clean and dry vial un screw the cap and fill with sample water to the line on the vial Replace the cap ensuring it...
Page 13: ... DPD Total sachet for Total Chlorine determination Invert vial approximately 20 seconds until powder dissolves 9 Gently push the vial back fully into the sample well of the meter whilst again aligning the mark on the vial with the mark on the meter 10 For Free Chlorine determination press the READ ENTER key within two minutes from the time the DPD Free reagent was added to the vial 11 For Total Ch...
Page 14: ...he sample with de ionized water and retest Multiply the result by the dilution factor used Example if the sample was diluted 2 1 with de ionized water i e 1 part sample water to 1 part de ionized water the result is multiplied by 2 to give the true concentration of the original sample Note Results obtained by this method will not be as accurate as stated in this manual because some chlorine will b...
Page 15: ...o effect at less than 2000ppm CaCO3 Monochloramine Monochloramine will cause a gradual increase in the Free Chlorine result over time Take the test result within 1 minute of adding the reagent sachet to avoid these errors Oxidants including Bromine Chlorine Dioxide Iodine and Ozone These will interfere with the test method at all levels It is recommended that an alternative test method is used if ...
Page 16: ...utralising Reagent added 50drops X 0 04 ml 2ml Final Volume 50ml 2ml 52ml Correction Factor 52 50 1 04 A test result of 1 00ppm would then become 1 00ppm X 1 04 1 04ppm 2 4 5 Accuracy Check User Calibration Producing chlorine standards is a difficult procedure that should only be attempted by trained laboratory staff Details of preparation techniques are not provided in this document The prepared ...
Page 17: ...of Free Chlorine can be determined directly and the concentration of Combined Chlorine may be calculated by subtracting the concentration of Free Chlorine from that of Total Chlorine In the Free Chlorine test method Un Combined Chlorine reacts directly with DPD N N diethyl p phenylenediamine in a conditioned sample to give a pink color In the Total Chlorine test method Combined Chlorine reacts wit...
Page 18: ...f the vial is clean dry and absent of any marks or finger prints Gently push the vial fully into the meter whilst aligning the mark on the vial with the mark on the meter 6 Press the ZERO key to blank the meter to that vial the meter will read ZERo whilst this is taking place Note The meter will store the last zero value it took between tests even if it turns off or if the batteries are removed Bl...
Page 19: ...strument whilst again aligning the mark on the vial with the mark on the meter 10 Wait for two minutes and then press the READ ENTER key within five minutes from when the sachet was added to the vial 11 The meter will flash CYNA whilst the measurement is taken It will then display the Cyanuric Acid concentration in parts per million ppm Cyanuric Acid Sample READ ENTER ppm ...
Page 20: ... 5 4 Accuracy Check User Calibration A stock solution of 1000ppm Cyanuric Acid may be produced by dissolving exactly 1g of Cyanuric Acid in 1 litre of de ionised water check the purity of the Cyanuric acid being used if less than 100 adjust the amount used accordingly The stock solution may then be diluted to give a Cyanuric Acid standard To do this take a portion of the stock solution and make up...
Page 21: ... in swimming pool water With correct pool maintenance Cyanuric Acid build up is uncommon however if correct maintenance is not carried out the levels may build up until potentially harmful In the test method the Cyanuric acid reacts with the sachet reagent in a conditioned sample to produce a suspended turbidity The amount of turbidity produced is proportional to the concentration of Cyanuric Acid...
Page 22: ...s or finger prints Gently place the vial fully into the sample well of the instrument whilst aligning the mark on the vial with the mark on the meter 6 Press the ZERO key to blank the meter to that vial the meter will read ZERo whilst this is taking place Note The meter will store the last zero value it took between tests even if it turns off or if the batteries are removed Blanking Sample ZERO pH...
Page 23: ... into the sample well of the instrument whilst again aligning the mark on the vial with the mark on the meter 10 Wait for 1 minute and then press the READ ENTER key within 3 minutes from when the time the reagent was added to the vial 11 The meter will flash PH whilst the measurement is taken It will then display the pH of the solution in pH units pH Sample READ ENTER pH ...
Page 24: ...heck the results obtained with a colorless pH7 0 buffer solution If the result is outside the range pH6 9 7 1 re calibrate the meter please refer to section 3 4 pH Due to the nature of the test method a sample pH of less than 5 9 or greater than 8 2 may result in false readings Do not use this test method to analyze samples with a pH outside of the specified range 2 6 3 Interferences Chlorine Chlo...
Page 25: ... accurate method for measuring pH in the range pH5 9 8 2 A precise amount of phenol red indicator is added to a sample of water The phenol red changes color from yellow at pH5 9 through to dark red at pH8 2 The amount of red color is related to its pH The amount of 525nm light absorbed by the red color is accurately measured by the meter and then converted into the pH of the sample ...
Page 26: ...as indicated in Section 4 Troubleshooting Guide In any event the instrument will continue to read the concentration or pH but with a decreased accuracy until the error is rectified The meter has an auto exit feature whereby it will exits the calibration mode if no key is pressed within 10 minutes or if there is an error during calibration A light shield cap is added in the package as an optional a...
Page 27: ... waiting for a blanking sample NOTE Blanking is compulsory during calibration without blanking the meter will not continue with the calibration procedure 5 Select a clean vial unscrew the cap and fill with deionised water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial 6 Ensure the outside of the vial is clean dry and absent of any marks or finger prints ...
Page 28: ...ine calibration press the READ ENTER key within two minutes from the time the sachet was added to the vial As for Total Chlorine calibration wait for two minutes before pressing the READ ENTER key and this has to be done within five minutes from the time the sachet was added to the vial 15 The meter will display Rd whilst the calibration standard is being measured and then displays SAVE to prompt ...
Page 29: ... instead The meter will display AbRT and CAL annunciator to signify that the calibration has been aborted without saving the calibration value The meter will then return to the beginning of the user calibration as in step 4 NOTE If an error occurs during calibration the display will present an error message Please refer to Section 4 Troubleshooting Guide for details CAL ...
Page 30: ...sory during calibration without blanking the meter will not continue with the calibration procedure 5 Select a clean vial un screw the cap and fill with de ionised water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial 6 Ensure the outside of the vial is clean dry and absent of any marks or finger prints Gently place the vial fully into sample well of the ...
Page 31: ...the mark on the vial with the mark on the meter 15 Wait for two minutes then press the READ ENTER key within five minutes from the time the reagent was added to the vial 16 The meter will display Rd whilst the calibration standard is being measured and then displays SAVE to prompt for calibration acceptance and saving of calibration data Cyanuric Acid Sample 70 ppm ppm READ ENTER CAL 17 Press the ...
Page 32: ...stead The meter will display AbRT and CAL annunciator to signify that the calibration has been aborted without saving the calibration value The meter will then return to the beginning of the user calibration as in step 4 NOTE If an error occurs during calibration the display will present an error message Please refer to Section 4 Troubleshooting Guide for details CAL ...
Page 33: ... indicating it is waiting for a blanking sample Note blanking is compulsory during calibration without blanking the meter will not continue with the calibration procedure 6 Select a clean vial un screw the cap and fill with de ionised water to the line on the vial Replace the cap ensuring it is screwed on finger tight to the vial 7 Ensure the outside of the vial is clean dry and absent of any mark...
Page 34: ... vial with the mark on the meter 15 Wait for one minute and then press the READ ENTER key within 3 minutes from when the time the reagent was added to the vial 16 The meter will display Rd whilst the calibration standard is being measured and then displays SAVE to prompt for calibration acceptance and saving of calibration data pH Sample 7 0 pH pH READ ENTER CAL 17 Press the READ ENTER key The met...
Page 35: ... The meter will display AbRT and CAL annunciator to signify that the calibration has been aborted without saving the calibration value The meter will then return to the beginning of the user calibration as in step 4 NOTE If an error occurs during calibration the display will present an error message Please refer to Section 4 Troubleshooting Guide for details CAL ...
Page 36: ... switched off press MODE and ON OFF keys simultaneously for about 2 seconds 2 The meter will momentarily flash the model number and URST User Reset and then display No 3 Use MODE key to select between YES or No YES To restore meter back to factory calibration values No To retain last calibrated values 4 After selecting YES or No press READ ENTER key 5 The meter will now flash the model number the ...
Page 37: ...imultaneously and hold for 2 seconds before releasing ON OFF Meter s Model Number Meter s Revision Number Measurement Selection Mode Press MODE key to select or YES No To restore factory calibration To retain last calibration values without retrieving factory calibration METER OFF OFF ON MODE MODE Figure 9 Restoring Factory Calibration ...
Page 38: ...urement range as listed in the Specification table in Section 7 ERR0 Inappropriate signal to recognize the blank Sample absorbance is less than blanking or blanking too low to achieve specified resolution Ensure that blanking is done before the chemical reagent is added Repeat the blanking procedure ERR1 Calibration Failure The absorbance of the calibration standard is outside the range allowed fo...
Page 39: ...ange the optical characteristics of the glass Scratches fingerprints and water droplets on the sample vial or inside the sample well can cause stray light interference leading to inaccurate readings Cleaning the vial is accomplished by washing the interior and exterior of the vial in a detergent solution Once cleaned the vial should be rinsed thoroughly 8 to 10 times with clean distilled water to ...
Page 40: ...Kit and batteries in a rugged carrying case ECC201 35645 20 Free Total Chlorine pH Colorimeter with sample vials a 30 ml bottle Chlorine Free DPD Reagent Kit Chlorine Total DPD Reagent Kit pH Indicator Phenol Red Reagent Kit and batteries in a rugged carrying case ECC301 35645 30 Free Total Chlorine pH Cyanuric Acid Colorimeter with sample vials a 30 ml bottle Chlorine Free DPD Reagent Kit Chlorin...
Page 41: ... User selectable 1 point per colorimetric test Display 4 digit 14 segments customized liquid crystal display with annunciators Sample Cells Borosilicate glass with screw caps fill line and indexing mark Height x diameter 51 x 25 mm 2 x 1 in Sample Required 10 ml 0 33 oz Operating Temperature Range 0 50 C 32 F to 122 F Sample Temperature Range 0 50 C 32 F to 122 F Operating Humidity Range 0 90 RH n...
Page 42: ... environment specifications of the products Waterproof Seal Opening the instrument enclosure excluding the battery compartment may void the warranty 9 RETURN OF ITEMS Authorization must be obtained from our Customer Service Department or authorized distributor before returning items for any reason A Return Goods Authorization RGA form is available through our Authorized Distributor Please include ...
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