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20

METHOD PROCEDURE

8.  METHOD PROCEDURE

REQUIRED REAGENTS
Code Description 

Quantity

HI95762-0

 

Free Chlorine ULR Reagent 

1 packet

REAGENT SETS

HI95762-01

 

Free Chlorine ULR Reagent - 100 tests

HI95762-03

 

Free Chlorine ULR Reagent - 300 tests

For other accessories see ACCESSORIES section.

MEASUREMENT PROCEDURE

Note: 

If tutorial mode is disabled, follow the measurement procedure below. If the 

tutorial mode is enabled, press 

Measure

 and follow the messages on the screen.

• Fill the cuvette with 10 mL of unreacted sample 

(up to the mark). Replace the plastic stopper and 
the cap.

• Insert the cuvette into the holder and ensure that 

the notch on the cap is positioned securely in the 
groove.

• Press 

Zero

. The display will show “-0.0-” when the meter is zeroed and ready for 

measurement.

 

 

• Remove the cuvette.

• Add the content of one packet of 

HI95762-0

 Free 

Chlorine ULR Reagent. Replace the plastic stopper 
and the cap. Shake gently for about 20 seconds.

10 mL

Summary of Contents for HI97762

Page 1: ...INSTRUCTION MANUAL HI97762 Free Chlorine Ultra Low Range Photometer ...

Page 2: ...g a Hanna Instruments product Pleasereadthisinstructionmanualcarefullybeforeusingthisinstrument This manual will provide you with the necessary information for correct use of this instrument as well as a precise idea of its versatility If you need additional technical information do not hesitate to e mail us at tech hannainst com or view our worldwide contact list at www hannainst com Dear Custome...

Page 3: ...ENERAL OPERATIONS 11 6 1 METER VALIDATION CAL CHECK CALIBRATION 11 6 2 GLP 13 6 3 LOGGING DATA LOG RECALL 13 6 4 GENERAL SETUP 14 6 5 REAGENTS ACCESSORIES 16 6 6 CONTEXTUAL HELP 16 6 7 BATTERY MANAGEMENT 17 7 PHOTOMETER 18 7 1 PROPER USE OF POWDER PACKET 18 7 2 CUVETTE PREPARATION 18 8 METHOD PROCEDURE 20 9 WARNING ERROR DESCRIPTIONS 22 10 BATTERY REPLACEMENT 24 11 ACCESSORIES 25 11 1 REAGENT SETS...

Page 4: ...HI97762B CAL Check Cuvette B for Free Chlorine Ultra Low Range Cloth for wiping cuvettes Scissors 1 5V AA Alkaline batteries CAL Check standard certificate Instrument quality certificate Instruction manual Each HI97762 is delivered in a cardboard box and is supplied with Sample cuvette 2 pcs Sample cuvette cap 2 pcs Plastic stopper 2 pcs 1 5V AA Alkaline batteries Instrument quality certificate In...

Page 5: ...up immediately and rinse with plenty of water If reagent contacts skin rinse the affected area thoroughly with water Avoid breathing released vapors Waste disposal For proper disposal of reagent kits and reacted samples contact a licensed waste disposal provider 3 ABBREVIATIONS mg L milligrams per liter ppm mL milliliter C degree Celsius F degree Fahrenheit GLP Good Laboratory Practice HDPE High D...

Page 6: ... Bandpass filter wavelength accuracy 1 0 nm Light detector Silicon photocell Cuvette type Round 24 6 mm diameter 22 mm inside Additional Specifications Auto logging 50 readings Display 128 x 64 pixel B W LCD with backlight Auto off After 15 minutes of inactivity 30 minutes before a READ measurement Battery type 1 5 V AA Alkaline 3 pcs Battery life 800 measurements without backlight Environment 0 t...

Page 7: ...the instrument at any time and apply a user calibration if necessary Hanna Instruments CAL Check cuvettes are made with NIST traceable standards The built in tutorial mode guides users step by step through the measurement process It includes all steps required for sample preparation the required reagents and quantities The HI97762 meter measures the free chlorine content in water samples in the 0 ...

Page 8: ...over Keypad Description The keypad contains 3 direct keys and 3 functional keys with the following functions Press the functional key to perform the function displayed above it on the LCD Press and hold to power off on Press briefly to return to the previous screen Press to access the menu screen Press to display the context sensitive help menu ...

Page 9: ...sorbed by atoms molecules or crystal lattices Photometric chemical analysis is based on specific chemical reactions between a sample and reagent to produce a light absorbing compound If pure absorption occurs the fraction of light absorbed depends both on the optical path length through the matter and on the physical chemical characteristics of the substance according to the Lambert Beer Law If al...

Page 10: ... luminous efficiency providing more light while using less power They also produce little heat which could otherwise affect electronic stability LEDs are available in a wide array of wavelengths whereas tungsten lamps have poor blue violet light output Improved optical filters ensure greater wavelength accuracy and allow a brighter stronger signal to be received The end result is higher measuremen...

Page 11: ...om direct sunlight by keeping them in the original packing Store between 5 and 30 C 41 to 86 F do not freeze To perform a CAL Check 1 Press CAL Check from measurement mode The Not Available message or the date time and status of the last CAL Check will be displayed on the screen 2 Press Check to start a new CAL Check Press the key at any time to abort the validation process 3 Use the functional ke...

Page 12: ...ion no user calibration is required OUT OF SPECIFICATION and Calibrate is available The measured value is near the expected value To update the user calibration press Calibrate Press Accept to confirm or Cancel to return to the previous screen OUT OF SPECIFICATION A user calibration is not allowed the measured value is outside of the tolerance window Check the certified value expiration date and c...

Page 13: ...ll measurements Every time a measurement is made the data is automatically saved The data log can hold 50 individual measurements When the data log is full 50 data points the meter will rewrite the oldest data point Viewing and deleting the data is possible using the Log Recall menu Press the key to enter the menu Use the functional keys to select Log Recall and press Select Use the functional key...

Page 14: ...rease or decrease the value Press Accept to confirm or the key to return to the Setup menu without saving the new value Contrast Option 0 to 100 Press Modify to change the display s contrast Use the functional keys to increase or decrease the value Press Accept to confirm the value or the key to return to the Setup menu without saving the new value Date Time Press Modify to change the date and tim...

Page 15: ...Option Comma or Period Press the functional key to select the desired decimal separator The decimal separator is used on the measurement screen Language Press Modify to change the language Use the functional keys to select the desired language Press Accept to choose one of the languages installed Beeper Option Enable or Disable When enabled a short beep is heard every time a key is pressed A long ...

Page 16: ...tore Factory Settings Press Select to reset to factory settings Press Accept to confirm or Cancel to exit without restoring the factory settings 6 5 REAGENTS ACCESSORIES Press the key to enter the menu Use the functional keys to select Reagents Accessories and press Select to access a list of reagents and accessories To exit press the key 6 6 CONTEXTUAL HELP The HI97762 offers an interactive conte...

Page 17: ...to diagnostic test when it is powered on During this test the Hanna Instruments logo will appear on the LCD If the auto diagnostic test was successful the meter is ready for use The battery icon on the LCD will indicate the battery status battery full battery below 10 replace the batteries soon battery is low replace the batteries with new ones To conserve battery the meter will turn off automatic...

Page 18: ...for each method is listed in the method procedure The mixing method is indicated with shake gently using one of the following icons In order to avoid reagent leaking and to obtain more accurate measurements close the cuvette first with the supplied HDPE plastic stopper and then the black cap Whenever the cuvette is placed into the measurement holder it must be dry outside and free of fingerprints ...

Page 19: ...in each method It is possible to take multiple readings in a row but it is recommended to take a new zero reading for each sample and to use the same cuvette for zeroing and measurement when possible Discard the sample immediately after the reading has been taken or the glass might become permanently stained All the reaction times reported in this manual are at 25 C 77 F In general the reaction ti...

Page 20: ...cedure below If the tutorial mode is enabled press Measure and follow the messages on the screen Fill the cuvette with 10 mL of unreacted sample up to the mark Replace the plastic stopper and the cap Insert the cuvette into the holder and ensure that the notch on the cap is positioned securely in the groove Press Zero The display will show 0 0 when the meter is zeroed and ready for measurement Rem...

Page 21: ...e caused by Bromine Chlorine Dioxide Iodine Oxidized forms of Chromium and Manganese Ozone Alkalinity greater than 1000 mg L CaCO3 if present as bicarbonate pH 8 3 above 25 mg L CaCO3 if present as carbonate pH 9 0 or acidity value greater than 150 mg L CaCO3 the color of the sample may develop only partially or rapidly fade to remove the interference neutralize the sample with diluted HCl or NaOH...

Page 22: ...zero cuvettes are inverted Swap the cuvettes and repeat the measurement There is either too much light or the instrument can not adjust the light level Please check the preparation of the zero cuvette and that the sample does not contain any debris The meter is either overheating or its temperature has dropped too low to operate within published accuracy specifications The meter must be between 0 ...

Page 23: ...he meter If the issue persists please contact Hanna Instruments technical support Battery level is too low for the meter to function properly Replace the batteries with new ones Tutorial mode has been enabled in the Setup menu Press Continue and follow the prompt on the screen Tutorial mode can be disabled in the Setup menu A critical error has occurred Restart the meter If the issue persists plea...

Page 24: ...ent s batteries follow these steps Turn the instrument off by pressing and holding the key Remove the battery cover by turning it counterclockwise Remove the old batteries replace them with three new 1 5V AA batteries Replace the battery cover turn it clockwise to close ...

Page 25: ... Reagent 300 tests 11 2 OTHER ACCESSORIES Code Description HI7101412 blue carrying case for HI977xx and 2 CAL Check cuvettes HI731318 cloth for wiping cuvettes 4 pcs HI731331 glass cuvette 4 pcs HI731336N cap for glass cuvette 4 pcs HI93703 50 cuvette cleaning solution 230 mL HI97762 11 CAL Check standards for Free Chlorine ULR cuvette kit ...

Page 26: ...which it is used Any variation introduced by the user to the supplied equipment may degrade the meter s performance For yours and the meter s safety do not use or store the meter in hazardous environments WARRANTY The HI97762 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to instructions This warranty is limited t...

Page 27: ...Hanna Instruments reserves the right to modify the design construction or appearance of its products without advance notice ...

Page 28: ...World Headquarters Hanna Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA www hannainst com MAN97762 Printed in ROMANIA ...

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