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Instruction Manual

HI 96711C

Free and Total Chlorine

 ISM

Summary of Contents for 96711C

Page 1: ...1 Instruction Manual HI 96711C Free and Total Chlorine ISM ...

Page 2: ...GLP 23 BATTERY MANAGEMENT 24 BATTERY REPLACEMENT 24 ACCESSORIES 25 WARRANTY 26 Dear Customer Thank you for choosing a Hanna product This manual will provide you with the necessary information for the correct use of the instrument Please read it carefully before using the meter If you need additional technical information do not hesitate to e mail us at tech hannainst com All rights are reserved Re...

Page 3: ...ame position every time it is placed into the measurement cell It is designed to fit a cuvette with a larger neck making it easier to add both sample and reagents The cuvette is made from special optical glass to obtain best results The HI 96711 meter measures the free and total chlorine Cl2 content in water samples in the 0 00 to 5 00 mg L ppm range The method is an adaptation of the USEPA Method...

Page 4: ...sults HI 96 series block diagram optical layout SPECIFICATIONS PRECISION AND ACCURACY Range Free Cl2 0 00 to 5 00 mg L Total Cl2 0 00 to 5 00 mg L Resolution 0 01 mg L from 0 00 to 3 50 mg L 0 10 mg L above 3 50 mg L Accuracy 0 03 mg L 3 of reading 25 C Typical EMC Deviation 0 01 mg L Light Source Tungsten lamp Light Detector Silicon Photocell with narrow band interference filter 525nm Method Adap...

Page 5: ...tion of light It is recommended not to touch the cuvette walls with hands Furthermore in order to maintain the same conditions during the zeroing and the measuring phases it is necessary to close the cuvette to prevent any contamination INSTRUMENT DESCRIPTION KEYPAD DESCRIPTION ON OFF to turn the meter on and off ZERO CFM this is a bi functional key Just press to zero the meter prior to measuremen...

Page 6: ...ette are inverted Zero A zero reading was not taken Follow the instructions of the measurement procedure for zeroing the meter b on sample reading DISPLAY ELEMENTS DESCRIPTION 1 The measuring scheme lamp cuvette detector appears during different phases of zero or reading measurement 2 Error messages and warnings 3 The battery icon indicates the charge state of the battery 4 The hourglass appears w...

Page 7: ...tion is displayed normal operation of the instrument will be interrupted Change the battery and restart the meter Under range A blinking 0 00 indicates that the sample absorbs less light than the zero reference Check the procedure and make sure you use the same cuvette for reference zero and measurement Over Range A flashing value of the maximum concentration indicates an over range condition The ...

Page 8: ...cap must be tightened to the same degree Whenever the cuvette is placed into the measurement cell it must be dry outside and completely free of fingerprints oil or dirt Wipe it thoroughly with HI 731318 or a lint free cloth prior to insertion Shaking the cuvette can generate bubbles in the sample causing higher readings To obtain accurate measurements remove such bubbles by swirling or by gently t...

Page 9: ... turbidity or color the measurement takes place in two phases First the meter is zeroed using the unreacted sample After the reagents are added the reacted sample is measured Important note Free and Total Chlorine have to be measured separately with fresh unreacted samples if both values are requested MEASUREMENT PROCEDURE Turn the meter on by pressing ON OFF The display briefly shows all tags on ...

Page 10: ...ERFERENCES Bromine positive error Oxidized Manganese and Chromium positive error Chlorine dioxide positive error Ozone positive error Iodine positive error In case of water alkalinity greater than 250 mg L CaCO3 or acidity greater than 150 mg L CaCO3 the color of the sample may develop only partially or may rapidly fade To resolve this neutralize the sample with diluted HCl or NaOH In case of wate...

Page 11: ...rupt calibration procedure at any time by pressing CAL CHECK or ON OFF keys Warning Do not calibrate the instrument with standard solutions other than the HANNA CAL CHECKTM Standards otherwise erroneous results will be obtained When calibrating only the selected range is affected Turn the meter on by pressing ON OFF When the beeper sounds briefly and the LCD displays dashes the meter is ready To c...

Page 12: ...can be verified and the factory calibration can be restored LAST CALIBRATION DATE GLP Press RANGE GLP to edit the desired year 2009 2099 If the key is kept pressed the year number is automatically increased When the correct year has been set press ZERO CFM or READ TIMER to confirm Now the display will show the month blinking Press RANGE GLP to edit the desired month 01 12 If the key is kept presse...

Page 13: ... a new zero has to be performed One fresh battery lasts for around 750 measurements depending on the light level The remaining battery capacity is evaluated at the instrument startup and after each measurement The instrument displays a battery indicator with three levels as follows 3 lines for 100 capacity 2 lines for 66 capacity 1 line for 33 capacity Battery icon blinking if the capacity is unde...

Page 14: ... repair or replacement free of charge Damages due to accident misuse tampering or lack of prescribed maintenance are not covered If service is required contact your dealer If under warranty report the model number date of purchase serial number and the nature of the failure If the repair is not covered by the warranty you will be notified of the charges incurred If the instrument is to be returned...

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