Hanna Instruments HI 83414 User manual

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www.hannainst.com
HI 83414
Turbidity and Free/Total Chlorine
Meter
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.
WARRANTY
HI 83414 is guaranteed for two years against defects in workmanship and materials when used
for its intended purpose and maintained according to instructions. Electrodes and probes are
guaranteed for six months. 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 the dealer from whom you purchased the instrument. If under
warranty, report the model number, date of purchase, serial number 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 instrument is to be returned to Hanna Instruments, first obtain a Returned Goods
Authorization number from the Technical Service department and then send it with shipping
costs prepaid. When shipping any instrument, make sure it is properly packed for complete
protection.
To validate your warranty, fill out and return the enclosed warranty card within 14 days from the
date of purchase.
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
WARRANTY.......................................................................................................................... 2
PRELIMINARY EXAMINATION................................................................................................. 4
GENERAL DESCRIPTION ........................................................................................................ 5
ABBREVIATIONS .................................................................................................................. 6
PRINCIPLE OF OPERATION .................................................................................................... 6
FUNCTIONAL DESCRIPTION ................................................................................................... 9
SPECIFICATIONS ................................................................................................................. 11
GENERAL TIPS FOR AN ACCURATE MEASUREMENT ............................................................... 12
START UP .......................................................................................................................... 20
RANGE SELECTION ............................................................................................................. 20
TUTORIAL MODE ................................................................................................................ 21
HELP MODE ....................................................................................................................... 21
MEASUREMENT PROCEDURE FOR RATIO/NON RATIO TURBIDITY RANGE ............................... 22
CALIBRATION PROCEDURE FOR RATIO/NON RATIO TURBIDITY RANGE ................................... 25
MEASUREMENT PROCEDURE FOR FREE/TOTAL CHLORINE ..................................................... 29
CAL CHECK PROCEDURE FOR FREE/TOTAL CHLORINE ............................................................ 32
CALIBRATION PROCEDURE FOR FREE/TOTAL CHLORINE ........................................................ 34
RESTORE FACTORY CALIBRATION......................................................................................... 35
GOOD LABORATORY PRACTICE (GLP) .................................................................................... 36
LOG AND LOG RECALL ......................................................................................................... 37
SETUP ............................................................................................................................... 38
LAMP REPLACEMENT .......................................................................................................... 41
FUSE REPLACEMENT .......................................................................................................... 41
PC INTERFACE ................................................................................................................... 42
ACCESSORIES ..................................................................................................................... 42

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Please examine this product carefully. Make sure that the instrument is not damaged. If any
damage occurred during shipment, please notify your local Hanna Office.
Each HI 83414 Bench Turbidity and Free/Total Chlorine instrument is supplied complete with:
• Five Sample Cuvettes and Caps
• Calibration Cuvettes for turbidimeter and colorimeter (HI 83414-11)
• Silicone Oil (HI 93703-58)
• Cloth for wiping the cuvettes
• Scissors
• Power cord
• Instruction Manual
• Instrument Quality Certificate
Note:Save all packing material until you are sure that the instrument functions correctly. Any
defective item must be returned in its original packing with the supplied accessories.
PRELIMINARY EXAMINATION

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HI 83414 is a high accuracy, combined meter with technology that benefits from Hanna’s years of
experience as manufacturer of analytical instruments.
The HI 83414 successfully combines turbidity and colorimetric measurements to meet the needs of
measuring the most important parameters of drinking water: turbidity and free/total chlorine. The
meter is especially designed for water quality measurements, providing reliable and accurate
readings on low turbidity and chlorine values. The HI 83414 meets and exceeds the requirements of
USEPAand Standard Methods both for turbidity and colorimetric measurements.
The instrument is based on a state-of-the-art optical system which guarantees accurate results,
assures long term stability and minimizes stray light and color interferences. It also compensates for
variations in intensity of the lamp, so there’s no need for frequent calibration. The 525 nm
intereference filter of the colorimeter assures precise and repeatable results.
The 25 mm round cuvettes made from special optical glass guarantee the repeatability of the
measurements.
Turbidity measurements can be made in the 0.00 to 4000 NTU (Nephelometric Turbidity Units)
range when ratiometric measurements are used and in the 0.00 to 40.0 NTU range when non ratio
method is used. The instrument has an EPA compliance reading mode which rounds the reading to
meet EPA reporting requirements. Alternative EBC and Nephelos measuring units are available.
Depending on the measured sample and needed accuracy, normal measurement, continuous
measurement or signal averaging measurement can be selected.
A two, three, four or five-point calibration can be performed by using the supplied (<0.1, 15, 100,
750 and 2000 NTU) standards. When user prepared standards are used, the calibration points can
be edited.
Free or Total Chlorine measurements can be made in the 0.00 to 5.00 mg/L (ppm) range.
With the powerful CAL CHECK™ function, the performance of the instrument can be validated at any
time by using the exclusive Hanna ready-made, NIST traceable standards.
A one-point calibration can be performed using the same cal check standard.
HI 83414 has complete G.L.P. (Good Laboratory Practice) functions that allow traceability of the
calibration conditions. The last calibration points, time and date can be checked.
HI 83414 has a user-friendly interface with an easy to understand, graphic LCD. All messages are in
plain text, easy to read and understand. Comprehensive contextual help is available at a simple key
press. All help information and messages are available in several languages. Confirmation and error
acoustic signals help the user during instrument operation. Furthermore, a tutorial mode of operation
guides the user step by step through the analytical process.
The instrument’s logging function offers complete information for all measurements. Up to 200
measurements can be stored in the internal memory and consulted at any time. In order to further
store or analyse, the data can be downloaded to a PC using the USB port.
GENERAL DESCRIPTION
GENERAL DESCRIPTION

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ABBREVIATIONS
NTU Nephelometric Turbidity Units
JTU Jackson Turbidity Units
FTU Formazin Turbidity Units
USEPA US Environmental Protection Agency
LCD Liquid Crystal Display
RTC Real Time Clock
RH Relative Humidity
ID Identification
EBC European Brewery Convention
TURBIDIMETER
Turbidity is the optical property that causes light to be scattered and absorbed, rather than transmitted.
The scattering of the light that passes through a liquid is primarily caused by the suspended solids.
The higher the turbidity, the greater the amount of scattered light. Because even the molecules in a
very pure fluid scatter light to a certain degree, no solution will have zero turbidity.
The USEPA Method 180.1 specifies the key parameters for the optical system to measure turbidity
for drinking, saline and surface water, in a 0 to 40 NTU range, using the nephelometric method.
The HI 83414 instrument is designed to meet or exceed the criteria specified by the USEPA Method
180.1 and Standard Method 2130 B.
The light beam that passes through the sample is scattered in all directions. The intensity and pattern
of the scattered light is affected by many variables like wavelenght of the incident light, particle size
and shape, refractive index and color.
The optical system includes a tungsten filament lamp, a scattered light detector (900) and a
transmitted light detector (1800).
PRINCIPLE OF OPERATION

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For the ratio turbidimeter range, the microprocessor of the instrument calculates the NTU value, from
the signals that reach the two detectors, by using an effective algorithm. This algorithm corrects and
compensates for interferences of color, making the HI 83414 instrument color-compensated. The
optical system and measuring technique compensate also for the lamp intensity fluctuations,
minimizing the need of frequent calibration.
For the non ratio turbidimeter range, the NTU value is calculated from the signal on the scattered
light detector (90°). The method offers a high linearity on the low range. The method is more
sensitive to the lamp intensity fluctuations.
The lower detection limit of a turbidimeter is determined by the so called “stray light”. Stray light
is the light detected by the sensors that is not caused by light scattering from suspended particles.
The optical system of HI 83414 instrument is designed to have very low stray light, providing
accurate results for low turbidity samples. However, special care must be taken when measuring low
turbidities (see page 12 “General Tips for an Accurate Measurement” for sample preparation and
measuring techniques).
MEASUREMENT UNITS
The most used units for turbidity are NTU (Nephelometric Turbidity Units). In the beer industry a
common unit is EBC (European Brewery Convention).
The HI 83414 turbidimeter reports the measurements in NTU, EBC or Nephelos. One NTU is
equal with 0.245 EBC or 6.7 Nephelos.
Calibration and measurements are done only in NTU and the results in other units are obtained
by multiplying with the respective factors.
COLORIMETER
Absorption of light is a typical phenomenon of interaction between electromagnetic radiation and
matter. When light beam crosses a substance, some of the radiation may be absorbed by atoms,
molecules or crystal lattices.
If pure absorption occurs, the fraction of absorbed light 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:
–log I/Io =ελ
c d
or
A =ελc d

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Where:
–log I/Io=Absorbance (A)
Io=intensity of incident light beam
I=intensity of light beam after absorption
ελ=molar extinction coefficient at wavelength λ
c=molar concentration of the substance
d=optical path through the substance
Therefore, the concentration “c” can be calculated from the absorbance of the substance as the other
factors are known.
Photometric chemical analysis is based on the possibility to develop an absorbing compound from a
specific chemical reaction between sample and reagents. Given that the absorption of a compound
strictly depends on the wavelength of the incident light beam, a narrow spectral bandwidth should be
selected as well as a proper central wavelength to optimize measurements.
The optical system is based on the turbidimeter tungsten lamp and a separate detector with a narrow
band interference filter @ 525 nm to guarantee both high performance and reliable results for
colorimetric measurements.
The measurement process is carried out in two phases: first the instrument is zeroed and then the
actual measurement is performed.
In this way the cuvette and the water turbidity are compensated during the zero mesurement phase.

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FUNCTIONAL DESCRIPTION
INSTRUMENT DESCRIPTION
1) Liquid Crystal Display (LCD). The LCD has backlight for better visibility in dark environments.
2) Keypad. Splash resistant.
3) Cuvette Lid. Close the cuvette lid prior to start a measurement.
4) Lamp lid
5) USB connector
6) Fuse holder
7) Mains switch
8) Mains connector

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DISPLAY DESCRIPTION
The display contains the following fields:
1) The current time in selected format
2) Information related to the measurement
3) Functional keys
4) Currently selected parameter
5) Measuring units
6) Measured value
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1
2
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5
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KEYBOARD DESCRIPTION
The keyboard contains 8 direct keys and 3 functional keys with the following functions:
The function of each of the three functional keys depends on the name
displayed on the LCD above them.
ESC
Press to return to the main screen.
RANGE
When in the main screen, press to access the change parameter screen.
Press to move up in menu and help or to increment a set value.
LOG
Press to move down in menu and help or to decrement a set value. Press
to log the current reading.
CAL
CHECK
Press to access calibration and cal check menu.
RCL
Press to recall the log.
HELP
Press to display the help screen.
SETUP
Press to access the setup screen.

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SPECIFICATIONS
Turbidity
Range - non ratio mode 0.00 to 9.99; 10.0 to 40.0 NTU
0.0 to 99.9; 100 to 268 Nephelos
0.00 to 9.80 EBC
Resolution - non ratio mode 0.01; 0.1 NTU
0.1; 1 Nephelos
0.01 EBC
Range - ratio mode 0.00 to 9.99; 10.0 to 99.9; 100 to 4000 NTU
0.0 to 99.9; 100 to 26800 Nephelos
0.00 to 9.99; 10.0 to 99.9; 100 to 980 EBC
Resolution - ratio mode 0.01; 0.1; 1 NTU
0.1; 1 Nephelos
0.01; 0.1, 1 EBC
Range selection Automatically
Accuracy ±2% of reading plus 0.02 NTU (0.15 Nephelos; 0.01 EBC)
±5% of reading above 1000 NTU (6700 Nephelos; 245 EBC)
Repeatibility ±1% of reading or 0.02 NTU (0.15 Nephelos; 0.01 EBC)
whichever is greater
Stray Light < 0.02 NTU (0.15 Nephelos; 0.01 EBC)
Light Detector Silicon Photocell
Method Nephelometric method (90°) or Ratio Nephelometric Method
(90° & 180°), Adaptation of the USEPA Method 180.1 and
Standard Method 2130 B.
Measuring mode Normal, Average, Continuous.
Turbidity Standards <0.1, 15, 100, 750 and 2000 NTU
Calibration Two, three, four or five-point calibration
Free and total Chlorine
Range Free Cl20.00 to 5.00 mg/L
Total Cl20.00 to 5.00 mg/L
Resolution 0.01 mg/L from 0.00 to 3.50 mg/L; 0.10 above 3.50 mg/L
Accuracy ±0.02 mg/L @ 1.00 mg/L
Detector Silicon photocell with 525 nm narrow band interference filters
Method Adaptation of the USEPA Method 330.5 and Standard Method
4500-Cl G. The reaction between chlorine and DPD reagent
causes a pink tint in the sample.

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GENERAL TIPS FOR AN ACCURATE MEASUREMENT
HI 83414 is a highly accurate combined meter for turbidity and free & total chlorine. To meet the
instrument’s performance and fully benefit from its features, it is very important for the analyst to use
proper measurement techniques for accurate, precise and repeatable readings. Special care must be
taken during sample preparation and handling. The instructions listed below should be carefully
followed during measuring and calibration to ensure best accuracy.
GENERAL RULES
•Always put the instrument on a flat, rugged surface when taking measurements.
•Do not operate in direct sunlight.
•Keep the lid of the instrument closed when it is not used to prevent dust or dirt entering inside.
•Always close the lid of the instrument during measurement.
•Never use cuvettes with scratches or cracks because they can cause inaccurate readings.
•Always cap the cuvettes to avoid spillage of the sample into the instrument.
•Do not use too much oil to prevent contamination of the optical system.
•If possible use indexed and matched cuvettes.
•If possible use the same cuvette for zero and read for Free and Total Chlorine measurements.
CUVETTE
The cuvette is part of the optical system in all measurements. The light reaches the sample by
passing through the cuvette glass. As a result, the measurement can be affected by the glass
imperfections, dirt, dust, scratches, or fingerprints present on the cuvette surface. Special care
must be taken in preparing and handling the cuvette.
Standards 1 mg/L free chlorine, 1 mg/L total chlorine
Calibration One-point calibration
Other
Light Source Tungsten filament lamp
Lamp life greater than 100,000 readings
Display 40 x 70 mm graphic LCD (64 x 128 pixels) with backlight
LOG Memory 200 records
Serial Interface USB
Environment 0 °C (32 °F) to 50 °C (122 °F); max 95% RH non-condensing
Power supply 230 V/50 Hz or
115 V/60 Hz 20 W
Auto Shut-off After 15 minutes of non-use
Dimensions 230 x 200 x 145 mm (9 x 7.9 x 5.7”) L x W x H
Weight 2.5 Kg (88 oz.)

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Note: In colorimetric measurements, when it is possible, use the same cuvette both for zeroing and
measurement. If this is not possible, always match the cuvettes.
In turbidimetric measurements, if you are using multiple cuvettes, always match the cuvettes.
CUVETTE HANDLING
The cuvettes should be free of scratches or cracks. Any cuvette with visible scratches should be
discarded. The cuvettes should be periodically washed with acid. After washing, the cuvettes
should be well rinsed multiple times with distilled or deionized water. Allow cuvettes to air-dry
and store them for long periods of time with caps, to avoid dirt entering inside. Always handle
the cuvette by touching only the cap or its top side (over the horizontal line).
Always store the cuvettes in separate boxes or with separators between them to avoid scratches
on the surface.
CUVETTE PREPARATION
Whenever a cuvette is used, it must be clean inside and outside. When it is placed into the
instrument, it must be dry outside, completely free of fingerprints or dirt.
If the cuvette is not indexed, put the cuvette with the factory mark aligned with the sign on the
instrument top.
CUVETTE OILING (TURBIDITY only)
Warning: For colorimetric measurements the cuvette should be completely free of any trace of oil.
Do not use the oiling procedure for colorimetric measurements.
To hide minor imperfections and scratches, the cuvettes should be oiled outside with the supplied
silicone oil. This is very important, especially for low turbidity samples (< 1 NTU), otherwise
scratches can contribute and alter turbidity readings.
The silicone oil has the same refractive index as the glass and will not alter the turbidity readings.
It is important to apply only a thin layer of silicone oil.
Warning:Do not apply silicone oil in excess because it may retain dirt or contaminate the cuvette
holder of the instrument, altering the turbidity readings.
It is very important to apply the silicone oil on a clean, dry cuvette. Apply a few drops of oil and wipe
the cuvette thoroughly with a lint-free cloth. Wipe off the excess oil till you obtain a thin, uniform
layer. If the procedure is correctly followed, the cuvette should appear nearly dry with no visible oil.

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Note:The supplied cloth for oiling should be stored together with the silicone oil bottle and
cuvettes, taking care to avoid contamination with dirt. After a few oiling procedures, the cloth
will contain enough oil to wipe the bottle with it without adding more oil. From time to time
add some drops of oil on the cuvette to provide the necessary oil quantity in the cloth.
INDEXING A CUVETTE
It is very important for low turbidity readings to always insert the cuvette into the instrument in
the same position.
All cuvettes are factory indexed. This index can be used to put the cuvette with the factory mark on
the cuvette aligned with the sign on the instrument top.
To further reduce the effect of glass imperfections, the cuvette can be indexed and use this new index
as the position mark.
For indexing one cuvette or matching multiple cuvettes, the continuous reading mode is suggested.
In this mode multiple successive readings are taken without turning off the lamp. The turbidity is
immediately displayed, reducing considerably the measurement time.
Note:The instrument can not perform continuous readings if the average mode is on.
In order to index a cuvette follow the next steps:
•Fill the cuvette with high quality water (<0.1 NTU) up
to the 10 mL mark.
•Clean and oil the cuvette as described before.
•Turn the instrument ON.

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•Insert the cuvette into the instrument and press
the Read key. Record the reading.
•Open the instrument lid, slightly rotate the
cuvette and take a new reading.
•Repeat the last step until you read the lowest
NTU value.
•Alternatively, keep the Read key pressed to
make continuous readings. After the first value
is displayed, open the lid and start rotating the
cuvette until the lowest NTU value is displayed.
•Mark this position on the thicker white band on
the top of the cuvette with a water resistant
pencil.
•Always use this position to align it with the
sign on the instrument top.
In order to match multiple cuvettes follow the next
steps:
•Fill some cuvettes with high quality water
(<0.1NTU) up to the 10 mL mark.
•Clean and oil the cuvettes as described before.
MATCHING MULTIPLE CUVETTES
Precise measurements require the use of a single cuvette. If it is not possible, cuvette selection
and matching must be performed before taking measurements.

•Turn the instrument ON.
•Insert the first cuvette into the instrument and
press the Read key. Record the reading.
•Mark this position on the thicker white band on
the top of the cuvette with a water resistant
pencil.
•Insert the second cuvette into the instrument
and take a reading.
•Open the instrument lid, slightly rotate the
cuvette and take a new reading.
•Repeat the last step for the second cuvette until the reading is within 0.01 NTU of the value
obtained for the first cuvette.
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•Alternatively, keep the Read key pressed and, after the first value is displayed, open the lid and
start rotating the cuvette until the read value matches the first cuvette.
•Mark this position on the second cuvette with a water resistant pencil.
•Follow the same procedure for all the cuvettes you need.
Note:If the cuvette is indexed, use the index to position it in the instrument.
SAMPLING TECHNIQUE
When taking turbidity measurements it is very important to select a representative sample. For
consistent results, follow the next tips when sampling:
•Gently mix the water before taking the sample.
•If the sample is taken from a pipe, discard the first few liters.
•If measuring a non uniform source, collect samples from different places and mix them.
When measuring the collected sample, keep in mind the following:
•Samples should be analyzed immediately after collection because the turbidity can change in
time.
•To avoid dilution of the sample it is better to rinse the cuvette with a quantity of sample and then
discard. Only after this should you fill the cuvette with sample.
•Pay attention that cold samples do not condense on the sample cell.
REMOVING AIR BUBBLES (TURBIDITY only)
Any air bubbles present in the sample will cause high turbidity readings. To obtain accurate
measurements, remove the air bubbles using one of these methods:
•Application of a partial vacuum;
•Addition of a surfactant, such as Triton X-100;
•Use of an ultrasonic bath;
•Heating the sample.
Sometimes it is necessary to combine two or more methods for efficient air bubble removal.
Note:Each method can alter the sample turbidity if misused, so they have to be used with caution.
APPLICATION OF VACUUM
Vacuum works by decreasing the atmospheric pressure. In this way the bubbles from the solution
come out to the surface. Application of vacuum is a very simple procedure and can be applied with
any vacuum source at hand. The simplest equipment at hand is a syringe and a rubber stopper for
vacuum degassing.
Notes:•The vacuum equipment must be clean and oil-free.
•It is not recommended to apply a vacuum to a viscous sample that contains volatile
components. In such cases the vacuum can cause the volatile component of the viscous
sample to increase the bubbles from the sample.

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ADDITION OF SURFACTANT
A surfactant addition works by changing the surface tension of the water. In this way bubbles are
released from the sample. This method is effective in samples that are supersaturated with air.
The procedure consists in the addition of a drop of surfactant in the cuvette before adding the sample
to be analyzed.
A convenient surfactant to use for degassing is Triton X-100.
Warning:Changing the surface tension will cause a rapid settling of particles that cause turbidity.
To avoid this problem, analyze the sample as soon as possible.
Do not shake the sample vigorously because the surfactant may foam. If you are using the same
cuvette, rinse it before adding a new sample in order to avoid surfactant accumulation.
Surfactant contribution to the turbidity readings is negligible.
Note:Surfactant addition should be used for degassing only when other methods are ineffective.
USE OF AN ULTRASONIC BATH
Ultrasonic waves are very effective in removing air bubbles from samples. However, ultrasonic waves
should be used with care because they can alter sample turbidity characteristics by modifying the
shape and size of particles which cause turbidity. The ultrasonic waves can also break the existing air
bubbles, leading to a complication of the degassing process.
In order to avoid excess application of the ultrasonic waves you can apply ultrasound until all visible
air bubbles are removed, and then measure the sample turbidity. This is the most common procedure
for degassing.
If you are not sure that all air bubbles were removed, apply ultrasonic waves again for a short period
of time and then measure the turbidity. Repeat this procedure until the turbidity is increasing instead
of decreasing, a sign that turbidity of the sample was altered.
In order to degas a sample fill a clean cuvette with sample and immerse it (1/2 to 2/3 immersed)
in an ultrasonic bath. Follow the degassing procedure described above. Only after the degassing
procedure is finished can the cuvette be capped.
HEATING THE SAMPLE
Use of heat to remove air bubbles, although very effective in some cases, should be handled with care
because it can alter the turbidity of the sample. When heating a sample, the volatile components
from the sample can vaporize, the suspended components can dissolve or the sample characteristics
can change.
Therefore, the heating procedure should be used with extreme care.
The best way is to use a warm water bath and immerse the cuvette with sample into the bath. Heat
the sample only until the visible bubbles are removed.
Note:Always cool the heated sample to the original sample temperature before measurement.
The heating procedure can be used in combination with vacuum or ultrasonic wave application for a
more effective air bubble removal.

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ADDING REAGENT (COLORIMETRY only)
•Because the reagent quantity is set up to react with 10 mL of
sample, it is very important to fill the cuvette correctly. The
liquid in the cuvette forms a meniscus; the bottom of the meniscus
must be at the same level with as the 10 mL mark.
•To open the powder reagent pack:
a) use scissors to open the powder packet
b) push the edges of the packet to form a spout
c) pour the contents of the packet
•Do not let the reacted sample stand too long after reagent is added or accuracy will be lost.
•All the reaction times reported in this manual were recorded at 20 ºC (68 ºF). As a general rule
of thumb, they should be doubled at 10 ºC (50 ºF) and halved at 30 ºC (86 ºF).
•Insert the cuvette with the mark aligned with the mark on the instrument top.
•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.
•After the reading, it is important to discard the sample immediately, otherwise the glass might
become permanently stained.
Note: In order to maximize accuracy prior to a measurement, follow the validation procedure to
be sure that the instrument is properly calibrated. If necessary, calibrate the instrument.

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RANGE SELECTION
The HI 83414 instrument has four measuring
ranges: Ratio Turbidity, Non Ratio Turbidity, Free
Chlorine, Total Chlorine. When the instrument is in
the main screen, the selected range is displayed
on the right side of the LCD, on the message line.
To change the range, press the RANGE key.
When the display shows the Change parameter
screen, press sor tkeys until the new range is
highlighted.
Press CFM key to select the new range. The
instrument returns to the main screen.
START UP
The HI 83414 Turbidity / Free & Total Chlorine benchmeter is supplied with all necessary accesories
for making measurements.
Unpack the instrument and place it on a flat surface. Do not place the instrument under direct
sunlight.
Connect the instrument to the mains with the provided power cord. Pay attention that the mains
voltage match the value printed on the back of the instrument.
Switch on the instrument. On the LCD, the Hanna Logo will appear for a short time, followed by the
main screen for ratio turbidity measurements.
The instrument loads the selected language. If no language can be loaded, the instrument will work
in the “safe mode”. In “safe mode” all the messages are displayed in English and tutorial and help
information are not available.