Hanna Instruments HI97779 Скачать руководство пользователя страница 20 | Manualshive

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Hanna Instruments HI97779 Скачать руководство пользователя страница 20

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METHOD PROCEDURE

8. METHOD PROCEDURE

REQUIRED REAGENTS
Code Description

Quantity

HI96779A-0

Chlorine Dioxide Reagent A

5 drops

HI96779B-0

Chlorine Dioxide Reagent B

1 packet

REAGENT SETS

HI96779-01

Chlorine Dioxide Reagent - 100 tests

HI96779-03

Chlorine Dioxide Reagent - 300 tests

For other accessories see ACCESSORIES section.

PRINCIPLE

The reaction between the chlorine dioxide and DPD indicator causes a pink tint in
the sample, the addition of glycine as a masking agent inhibits the response of free
chlorine.

APPLICATION

Drinking water, tap water, treated water

SAMPLING PROCEDURE

Collect the sample in a clean glass bottle and analyze it immediately. Chlorine dioxide
is a strong oxidizing agent and is unstable in water.

SIGNIFICANCE & USE

Chlorine dioxide is a commonly-used alternative to chlorine (Cl

2

) as a water disinfectant.

The Chlorophenol Red method (non-rapid method) reacts specifically with chlorine
dioxide with little interference from free chlorine or chloramines, but the method
procedure is cumbersome. The Chlorine Dioxide Rapid Method based on the DPD (N,N-
Diethyl-p-phenylenediamine) indicator is a much simpler method by comparison, but
it is susceptible to interference from other oxidizers. Glycine (Reagent A) is able to
convert free chlorine to chloroaminoacetic acid without affecting the analysis of chlorine
dioxide content.

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Содержание HI97779

Страница 1: ...INSTRUCTION MANUAL HI97779 Chlorine Dioxide Rapid Photometer ...

Страница 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...

Страница 3: ...OPERATIONS 11 6 1 METER VALIDATION CAL CHECK CALIBRATION 11 6 2 GLP 12 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 COLLECTING MEASURING SAMPLES AND REAGENTS 18 7 2 CUVETTE PREPARATION 18 8 METHOD PROCEDURE 20 9 WARNING ERROR DESCRIPTIONS 23 10 BATTERY REPLACEMENT 25 11 ACCESSORIES 25 11 1 REAGE...

Страница 4: ...e A HI97779B CAL Check Cuvette B for Chlorine Dioxide Rapid Cloth for wiping cuvettes Scissors 1 5V AA Alkaline batteries CAL Check standard certificate Instrument quality certificate Instruction manual Each HI97779 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 Instr...

Страница 5: ...th 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 DPD N N Diethyl p phenylenediamine EPA US Environmental Protection ...

Страница 6: ... 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 to 50 C 32...

Страница 7: ...rmance of 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 HI97779 meter measures the chlorine dioxide content in water samp...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 12: ... 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 clean the outside of the cuvette Repeat the CAL Check procedure If this error continues contact your nearest Hanna Instruments Customer Service Center 6 2 GLP Press the key to enter the menu Use the funct...

Страница 13: ... the key to enter the menu Use the functional keys to select Log Recall and press Select Use the functional keys to highlight a log and press Info to view additional information about the log From this screen Next and Previous can be used to view other logs Press Delete to erase logged data After pressing Delete a prompt on display is asking for confirmation Press No or the key to return to the pr...

Страница 14: ...on 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 time Press the functional keys to highlight the value to be modified year month day hour minute or second Press Edit to modify the highl...

Страница 15: ...tor 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 beep alert sounds when the pressed key is not active or an error is detected Press the functional key to e...

Страница 16: ...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 HI97779 offers an interactive contextual help mode that assists the user at any time To access the help screen press the key The instrument will display additional information related to the current screen To read all t...

Страница 17: ...nostic 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 automatically after 15 minutes of inactivity If a zero reading has been done but not a read auto off time is increased to 30 minutes ...

Страница 18: ... Use of Dropper Bottle 1 Tap the dropper on the table several times and wipe the outside of the tip with a cloth 2 Always keep the dropper bottle in a vertical position while dosing the reagent 7 2 CUVETTE PREPARATION Proper mixing is very important for reproducibility of the measurements The proper mixing technique is listed in the method procedure The mixing method is indicated with shake gently...

Страница 19: ...ts remove such bubbles by swirling or by gently tapping the cuvette Do not let the reacted sample stand too long after reagent has been added For best accuracy respect the timings described in the 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...

Страница 20: ...SAMPLING PROCEDURE Collect the sample in a clean glass bottle and analyze it immediately Chlorine dioxide is a strong oxidizing agent and is unstable in water SIGNIFICANCE USE Chlorinedioxideisacommonly usedalternativetochlorine Cl2 asawaterdisinfectant The Chlorophenol Red method non rapid method reacts specifically with chlorine dioxide with little interference from free chlorine or chloramines ...

Страница 21: ...ed sample up to the mark Add5dropsofHI96779A 0ChlorineDioxideReagentA Replace the plastic stopper and the cap Shake gently for 30 seconds 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 a 30 second countdown prior to zeroing To skip the timer press Zero twice The meter will display 0 0 when the meter is z...

Страница 22: ...ll show a 1 minute countdown prior to the measurement To skip the timer press Read twice When the timer ends the meter will perform the reading The instrument displays the results in mg L of ClO2 INTERFERENCES Interference may be caused by Acidity Alkalinity Flocculating agents Hardness Inorganic and Organic Chloramines Manganese Metals Monochloramine OxidizedformsofChromiumandManganese Ozone and ...

Страница 23: ...d the 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 betw...

Страница 24: ...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...

Страница 25: ...cover turn it clockwise to close 11 ACCESSORIES 11 1 REAGENT SETS Code Description HI96779 01 Chlorine Dioxide Reagent 100 tests HI96779 03 Chlorine Dioxide 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 ...

Страница 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 HI97779 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...

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

Страница 28: ...World Headquarters Hanna Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA www hannainst com MAN97779 Printed in ROMANIA ...

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