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HI97771
Free Chlorine &
Total Chlorine Ultra High Range
Photometer
INSTRUCTION MANUAL
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Dear
Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using this instrument.
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 [email protected] or view our worldwide contact list at
www.hannainst.com.
All rights are reserved. Reproduction in whole or in part is prohibited without the written consent
of the copyright owner, Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
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TABLE OF CONTENTS
1. PRELIMINARY EXAMINATION .......................................................................... 4
2. SAFETY MEASURES ........................................................................................ 5
3. ABBREVIATIONS ........................................................................................... 5
4. SPECIFICATIONS ............................................................................................ 6
5. DESCRIPTION ................................................................................................ 7
5.1. GENERAL DESCRIPTION & INTENDED USE .............................................. 7
5.2. FUNCTIONAL DESCRIPTION ................................................................... 8
5.3. PRECISION & ACCURACY ....................................................................... 9
5.4. PRINCIPLE OF OPERATION .................................................................... 9
5.5. OPTICAL SYSTEM ................................................................................10
6. GENERAL 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. METHOD SELECTION ..........................................................................18
7.2. COLLECTING & MEASURING SAMPLES AND REAGENTS ...........................18
7.3. CUVETTE PREPARATION ...................................................................... 19
8. METHOD PROCEDURE .................................................................................. 21
8.1. FREE CHLORINE (POWDER REAGENT) .................................................. 21
8.2. FREE CHLORINE (LIQUID REAGENT) ..................................................... 23
8.3. TOTAL CHLORINE UHR ........................................................................ 26
9. WARNING & ERROR DESCRIPTIONS...............................................................28
10. BATTERY REPLACEMENT ............................................................................. 30
11. ACCESSORIES ............................................................................................31
11.1. REAGENT SETS.................................................................................31
11.2. OTHER ACCESSORIES ....................................................................... 31
CERTIFICATION ................................................................................................. 32
RECOMMENDATIONS FOR USERS .......................................................................32
WARRANTY ...................................................................................................... 33
TABLE OF CONTENTS
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PRELIMINARY EXAMINATION
1. PRELIMINARY EXAMINATION
Remove the instrument and accessories from the packaging and examine it carefully.
For further assistance, please contact your local Hanna Instruments Office or email us
at [email protected].
Each HI97771C is delivered in a rugged carrying case and is supplied with:
• Sample cuvette (2 pcs.)
• Sample cuvette cap (2 pcs.)
• Plastic stopper (2 pcs.)
• A ZERO - CAL Check Cuvette A
• HI97701B - CAL Check Cuvette B for Free and Total Chlorine (Powder & Liquid)
• HI97771B - CAL Check Cuvette B for Total Chlorine Ultra High Range
• Cloth for wiping cuvettes
• Scissors
• 1.5V AA Alkaline batteries
• CAL Check standard certificate
• Instrument quality certificate
• Instruction manual
Each HI97771 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
• Instruction manual
Note: Save all packing material until you are sure that the instrument works
correctly. Any damaged or defective item must be returned in its original packing
material with the supplied accessories.
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2. SAFETY MEASURES
• The chemicals contained in the reagent kits may be hazardous if
improperly handled.
• Read the Safety Data Sheets (SDS) before performing tests.
• Safety equipment: Wear suitable eye protection and clothing when
required, and follow instructions carefully.
• Reagent spills: If a reagent spill occurs, wipe 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.
SAFETY MEASURES
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 Agency
GLP Good Laboratory Practice
HDPE High Density Polyethylene
LED Light Emitting Diode
NIST National Institute of Standards and Technology
UHR Ultra High Range
ABBREVIATIONS
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4. SPECIFICATIONS
SPECIFICATIONS
Free Chlorine
(All Methods)
Total Chlorine
UHR
Measurement
System
Additional
Specifications
Range 0.00 to 5.00 mg/L (as Cl
)
2
Resolution 0.01 mg/L
Accuracy ±0.03 mg/L ±3% of reading at 25 °C
Method
Range 0 to 500 mg/L (as Cl
Adaptation of US EPA Method 330.5,
DPD Colori metric Method
)
2
Resolution 1 mg/L
Accuracy ±3 mg/L ±3% of reading at 25 °C
Adaptation of Standard Methods for
Method
Examination of Water and Wastewater,
th
Edition, 4500-Cl
20
Light source Light Emitting Diode
Bandpass filter 525 nm
Bandpass filter
bandwidth
Bandpass filter
wavelength accuracy
8 nm
±1.0 nm
Light detector Silicon photocell
Cuvette type Round 24.6 mm diameter (22 mm inside)
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 to 122 °F);
0 to 100% RH, non-serviceable
Dimensions 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0")
Weight
(with batteries)
Case ingress
protection rating
380 g (13.4 oz.)
IP67, floating case
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5. DESCRIPTION
5.1. GENERAL DESCRIPTION & INTENDED USE
The HI97771 is an auto-diagnostic portable photometer that benefits from Hanna’s
years of experience as a manufacturer of analytical instruments. It has an advanced
optical system that uses a Light Emitting Diode (LED) and a narrow band interference
filter that allows for accurate and repeatable readings.
The optical system is sealed from outside dust, dirt and water. The meter uses an
exclusive positive-locking system to ensure that the cuvettes are placed into the holder
in the same position every time.
With the CAL Check™ functionality, users are able to validate the performance 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 HI97771 meter measures free chlorine from 0.00 to 5.00 mg/L (ppm) and total
chlorine from 0 to 500 mg/L (ppm).
The method for free chlorine is an adaptation of US EPA Method 330.5, DPD Colorimetric Method.
The method for total chlorine is an adaptation of Standard Methods for Examination of
Water and Wastewater, 20
th
Edition, 4500-Cl.
DESCRIPTION
The HI97771 photometer is a compact and versatile meter suitable for field or bench
measurements, featuring a:
• Sophisticated optical system
• Meter validation using certified CAL Check cuvettes
• Tutorial mode guides the user step-by-step
• Auto logging
• Waterproof IP67, floating case
• GLP features
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5.2. FUNCTIONAL DESCRIPTION
DESCRIPTION
1. ON/OFF power button 3. Liquid Crystal Display (LCD) 5. Indexing mark
2. Keypad 4. Cuvette holder 6. Battery cover
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.
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5.3. PRECISION & ACCURACY
Precision is how closely repeated measurements are to one another. Precision is usually
expressed as standard deviation (SD).
Accuracy is defined as the closeness of a test result to the true value and is method
specific.
Although good precision suggests good accuracy, precise results can be inaccurate. The
figure explains these definitions.
5.4. PRINCIPLE OF OPERATION
Absorption of light is a typical phenomenon of interaction between electromagnetic
radiation and matter. When a light beam crosses a substance, some of the radiation
may be absorbed 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 all other factors are constant, the
concentration "c" can be calculated form the absorbance of the substance.
Lambert-Beer Law:
= el c d
-log I/I
o
or
A = el c d
= intensity of incident light beam
I
o
I = intensity of light beam after absorption
el = molar extinction coefficient at wavelength l
c = molar concentration of the substance
d = optical path through the substance
DESCRIPTION
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5.5. OPTICAL SYSTEM
DESCRIPTION
The internal reference system (reference detector) of the HI97771 photometer
compensates for any drifts due to power fluctuations or ambient temperature changes,
providing a stable source of light for your blank (zero) measurement and sample
measurement.
LED light sources offer superior performance compared to tungsten lamps. LEDs have
a much higher 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 measurement stability and less
wavelength error.
A focusing lens collects all of the light that exits the cuvette, eliminating errors from
cuvette imperfections and scratches, eliminating the need to index the cuvette.
Instrument Block Diagram
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6. GENERAL OPERATIONS
6.1. METER VALIDATION: CAL CHECK & CALIBRATION
Validation of the HI97771 involves verifying the concentration of the certified CAL Check
standards. The CAL Check screen guides the user step-by-step through the validation
process and user calibration (if necessary).
WARNING: Do not use any solutions or standards other than the Hanna
Instruments
please perform these at room temperature, 18 to 25 °C (64.5 to 77.0 °F).
Note: CAL Check Standards will not read the specified value in measurement
mode. Protect the CAL Check cuvettes from direct sunlight by keeping them in
the original packing. Store between 5 and 30
To perform a CAL Check:
1. Press the
®
CAL Check Standards. For accurate validation and calibration results,
°
C (41 to 86 °F), do not freeze.
key to enter menu. Use the functional keys to select
CAL Check / Calibration and press Select.
The “Not Available“ message or the date, time and status of the last CAL Check
will be displayed on the screen.
GENERAL OPERATIONS
Note: CAL Check & Calibration is for the selected method.
2. Press Check to start a new CAL Check. Press the
the validation process.
3. Use the functional keys to enter the certificate value of the calibration standard
found on the CAL Check Standard Certificate. Press Next to continue.
Note: This value will be saved in the instrument for future validation. If a new set
of calibration standards is obtained, please update the certificate value.
key at any time to abort
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GENERAL OPERATIONS
4. Insert the A ZERO CAL Check Cuvette A then press Next to continue. The “Please
wait...“ message will be displayed during the measurement.
5. Insert the CAL Check Cuvette B for the selected method (HI97701B for Free Chlorine
or HI97771B for Total Chlorine Ultra High Range) then press Next to continue.
The “Please wait...“ message will be displayed during the measurement.
6. When the CAL Check is complete, the display will show one of the following
messages and the value obtained during the measurement:
• “PASSED“: The measured value is within the accuracy specification, 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.
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• “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.
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6.2. GLP
Press the
press Select. Good Laboratory Practice (GLP) shows the date and time of the last user
calibration (if available) or factory calibration. To erase the last user calibration and to
clear the CAL Check, press Clear and follow the prompts. Press Yes to erase and return
to the factory calibration data or No to exit the clear procedure.
6.3. LOGGING DATA & LOG RECALL
The instrument features a data autolog function to help users keep track of all
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
and press Select.
key to enter the menu. Use the functional keys to select GLP and
key to enter the menu. Use the functional keys to select Log Recall
GENERAL OPERATIONS
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 previous screen.
Press Yes to delete selected log.
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GENERAL OPERATIONS
Press Del All to erase all the logged data. If Del All is pressed, follow the prompt to
confirm. Press Yes to delete all logged data, No or the
recall.
6.4. GENERAL SETUP
Press the
press Select. Use the functional keys to highlight desired option.
Backlight
Option: 0 to 100 %
Press Modify to access the backlight intensity. Use the functional keys to increase or
decrease the value. Press Accept to confirm or the
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
Setup menu without saving the new value.
key to enter the menu. Use the functional keys to select Setup and
key to return to the log
key to return to the Setup
key to return to the
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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 highlighted value. Use the functional keys to change the value.
Press Accept to confirm or the
key to return to the previous screen.
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Time Format
Option: AM/PM or 24-hour
Press the functional key to select the desired time format.
Date Format
Press Modify to change the date format. Use the functional keys to select the desired
format. Press Accept to confirm or the
saving the new format.
Decimal Separator
Option: Comma ( , ) or Period ( . )
Press the functional key to select the desired decimal separator. The decimal separator
is used on the measurement screen.
key to return to the Setup menu without
GENERAL OPERATIONS
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 enable or disable the beeper.
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GENERAL OPERATIONS
Tutorial
Option: Enable or Disable
When enabled, the user will be guided step-by-step through the measurement
procedure.
Meter Information
Press Select to view the model, serial number, firmware version and selected language.
Press the
Restore Factory Settings
Press Select to reset to factory settings. Press Accept to confirm or Cancel to exit
without restoring the factory settings.
key to return to the Setup menu.
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6.5. REAGENTS & ACCESSORIES
Press the
Reagents / Accessories and press Select to access a list of reagents and accessories.
To exit press the
6.6. CONTEXTUAL HELP
The HI97771 offers an interactive contextual help mode that assists the user at any
time. To access the help screen press the
key to enter the menu. Use the functional keys to select
key.
key.
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The instrument will display additional information related to the current screen. To read
all the available information, scroll the text using the functional keys.
To exit help mode press the
previous screen.
6.7. BATTERY MANAGEMENT
The meter will perform an auto-diagnostic test when it is powered on. During this test,
the Hanna Instruments
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
®
logo will appear on the LCD. If the auto-diagnostic test was
or the key and the meter will return to the
GENERAL OPERATIONS
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.
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7. PHOTOMETER
7.1. METHOD SELECTION
Press Methods when in measurement mode to access the list of methods. Use the
functional keys to highlight the desired method then press Select.
PHOTOMETER
The selected method will be saved when the instrument is powered off.
7.2. COLLECTING & MEASURING SAMPLES AND REAGENTS
Proper Use of Powder Packet
1. Use scissors to open the powder packet.
2. Push the edges of the packet to form a spout.
3. Pour out the content of the packet.
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Proper 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.
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7.3. CUVETTE PREPARATION
Proper mixing is very important for reproducibility of the measurements. The proper
mixing technique is listed in the method procedure.
(a) Invert the cuvette a couple of times or for a specified time: hold the cuvette in the
vertical position. Turn the cuvette upside-down and wait for all of the solution to
flow to the cap end, then return the cuvette to the upright vertical position and
wait for all of the solution to flow to the cuvette bottom. This is one inversion.
The correct speed for this mixing technique is 10-15 complete inversions in 30
seconds. This mixing technique is indicated with “invert to mix” and the following
icons:
(b) The mixing method is indicated with “shake gently“ using one of the following icons:
PHOTOMETER
(c) The mixing method is indicated with “swirl“ 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.
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Whenever the cuvette is placed into the measurement holder, it must be dry outside
and free of fingerprints, oil or dirt. Wipe it thoroughly with HI731318 microfiber
cleaning cloth or a lint-free wipe prior to insertion.
PHOTOMETER
Shaking the cuvette can generate bubbles in the sample, causing higher readings. To
obtain accurate measurements, 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 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 time should be increased for temperatures lower than 20 °C (68 °F), and
decreased for temperatures higher than 25 °C (77 °F).
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8. METHOD PROCEDURE
8.1. FREE CHLORINE (POWDER REAGENT)
REQUIRED REAGENTS
Code Description Quantity
HI93701-0 Free Chlorine Reagent 1 packet
REAGENT SETS
HI93701-01 Free Chlorine Reagent - 100 tests
HI93701-03 Free Chlorine Reagent - 300 tests
For other accessories see ACCESSORIES section.
MEASUREMENT PROCEDURE
• Select the Free Chlorine (Powder) method using the procedure described in the
METHOD SELECTION section.
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.
METHOD PROCEDURE
• 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.
10 mL
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• Remove the cuvette.
• Add the content of one packet of
HI93701-0 Free Chlorine Reagent.
Replace the plastic stopper and the cap.
Shake gently for 20 seconds.
METHOD PROCEDURE
• Insert the cuvette into the holder and
ensure that the notch on the cap is
positioned securely in the groove.
• Press Read. The display will 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 chlorine (Cl
INTERFERENCES
Interference may be caused by:
• Bromine, Iodine, Oxidized forms of Chromium and Manganese, Ozone
• Hardness greater than 500 mg/L CaCO3, to remove the interference shake the
sample for approximately 2 minutes after adding the powder reagent
• Alkalinity greater than 250 mg/L CaCO3 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
).
2
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8.2. FREE CHLORINE (LIQUID REAGENT)
REQUIRED REAGENTS
Code Description Quantity
HI93701A-F Free Chlorine Reagent A 3 drops
HI93701B-F Free Chlorine Reagent B 3 drops
REAGENT SETS
HI93701-F Free Chlorine Reagent - 300 tests
For other accessories see ACCESSORIES section.
MEASUREMENT PROCEDURE
• Select the Free Chlorine (Liquid) method using the procedure described in the
METHOD SELECTION section.
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.
METHOD PROCEDURE
• 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.
10 mL
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• Remove the cuvette.
• To an empty cuvette add 3 drops of
HI93701A-F Free Chlorine Reagent A and
3 drops of HI93701B-F Free Chlorine
Reagent B.
METHOD PROCEDURE
• Swirl gently to mix.
• Add 10 mL of unreacted sample (up to the
mark). Replace the plastic stopper and the
cap. Shake gently to mix.
• Insert the cuvette into the holder and ensure
that the notch on the cap is positioned securely
in the groove.
×3 ×3
10 mL
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• Press Read. The display will 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 chlorine (Cl
).
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INTERFERENCES
Interference may be caused by:
• Bromine, Iodine, Oxidized forms of Chromium and Manganese, Ozone
• Hardness greater than 500 mg/L CaCO3, to remove the interference shake the
sample for approximately 2 minutes after adding the powder reagent
• Alkalinity greater than 250 mg/L CaCO3 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
METHOD PROCEDURE
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8.3. TOTAL CHLORINE UHR
REQUIRED REAGENTS
Code Description Quantity
HI95771A-0 Total Chlorine UHR Reagent A 1 packet
HI95771B-0 Total Chlorine UHR Reagent B 1 packet
REAGENT SETS
HI95771-01 Total Chlorine UHR Reagent - 100 tests
METHOD PROCEDURE
HI95771-03 Total Chlorine UHR Reagent - 300 tests
For other accessories see ACCESSORIES section.
MEASUREMENT PROCEDURE
• Select the Total Chlorine UHR method using the procedure described in the METHOD
SELECTION section.
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.
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• 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.
10 mL
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• Remove the cuvette.
• Add the content of one packet of HI95771A-0
Total Chlorine UHR Reagent A and the content of
one packet of HI95771B-0 Total Chlorine UHR
Reagent B. Replace the plastic stopper and the cap.
Shake gently for 20 seconds.
• Press Read. The display will show a 1 minute
countdown prior to the measurement. To skip the
timer, press Read twice. After 1 minute, invert the
cuvette 5 times.
• Insert the cuvette into the holder and ensure that
the notch on the cap is positioned securely in the
groove.
METHOD PROCEDURE
• Press Read twice. The instrument displays the results in mg/L of chlorine (Cl
INTERFERENCES
Interference may be caused by:
• Bromine, Chlorine Dioxide, Chromium, Iodine, Oxidized Manganese, Ozone
).
2
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9. WARNING & ERROR DESCRIPTIONS
The instrument shows clear warning messages when erroneous conditions appear and
when measured values are outside the expected range.
The information below provides an explanation of the errors and warnings, and
recommended action to be taken.
There is an excess amount of ambient light reaching
the detector. Ensure that the notch on the cap is
positioned securely in the groove before performing
any measurements. If the issue persists, please contact
Hanna Instruments technical support.
The sample and the zero cuvettes are inverted. Swap the
cuvettes and repeat the measurement.
WARNING & ERROR DESCRIPTIONS
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 and 50 °C
(32 and 122 °F) to perform any measurements.
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Meter temperature has changed significantly since
the zero measurement has been performed. The zero
measurement must be performed again.
The measured value is outside the limits of the method.
Verify that the sample does not contain any debris.
Check the sample preparation and the measurement
preparation.
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Date and time settings have been lost. Please reset
the values. If the issue persists, please contact Hanna
Instruments technical support.
English is the only available language. Help function
is not available. Restart the 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, please contact Hanna Instruments
technical support.
WARNING & ERROR DESCRIPTIONS
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10. BATTERY REPLACEMENT
To replace the instrument’s batteries, follow these steps:
• Turn the instrument off by pressing and holding the
• 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.
BATTERY REPLACEMENT
key.
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11. ACCESSORIES
11.1. REAGENT SETS
Code Description
HI93701-01 Free Chlorine Reagent - 100 tests (powder)
HI93701-03 Free Chlorine Reagent - 300 tests (powder)
HI93701-F Free Chlorine Reagent - 300 tests (liquid)
HI95771-01 Total Chlorine UHR Reagent - 100 tests
HI95771-03 Total Chlorine UHR Reagent - 300 tests
11.2. OTHER ACCESSORIES
Code Description
HI7101413 blue carrying case for HI977xx and 3 CAL Check cuvettes
HI731318 cloth for wiping cuvettes (4 pcs.)
HI731331 glass cuvette (4 pcs.)
HI731336N cap for glass cuvette (4 pcs.)
ACCESSORIES
HI93703-50 cuvette cleaning solution (230 mL)
®
HI97701-11 CAL Check
HI97771-11 CAL Check
standards for Free and Total Chlorine - cuvette kit
®
standards for Total Chlorine UHR - cuvette kit
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CERTIFICATION
compliant
All Hanna Instruments conform to the CE European Directives.
RoHS
CERTIFICATION
Disposal of Electrical & Electronic Equipment. The product should not be treated
as household waste. Instead hand it over to the appropriate collection point for the
recycling of electrical and electronic equipment which will conserve natural resources.
Disposal of waste batteries. This product contains batteries, do not dispose of them
with other household waste. Hand them over to the appropriate collection point for
recycling.
Ensuring proper product and battery disposal prevents potential negative consequences
for the environment and human health. For more information, contact your city, your local
household waste disposal service, the place of purchase or go to www.hannainst.com.
RECOMMENDATIONS FOR USERS
Before using this product, make sure it is entirely suitable for your specific application
and for the environment in 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.
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WARRANTY
The HI97771 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 to repair or replacement free of charge. Damage due to accidents,
misuse, tampering or lack of prescribed maintenance is not covered.
If service is required, contact your local Hanna Instruments Office. If under warranty,
report the model number, date of purchase, serial number (engraved on the bottom of
the meter) and the nature of the problem. If the repair is not covered by the warranty,
you will be notified of the charges incurred. If the meter is to be returned to Hanna
Instruments, first obtain a Returned Goods Authorization (RGA) number from the
Technical Service department and then send it with shipping costs prepaid. When
shipping any meter, make sure it is properly packed for complete protection.
WARRANTY
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MAN97771 12/19
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Hanna Instruments reserves the right to modify the design, construction or appearance
of its products without advance notice.
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World
Headquarters
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
www.hannainst.com
MAN97771 Printed in ROMANIA
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