Hanna Instruments HI 93741 User Manual
HANNA LITERATUREHANNA LITERATURE
HANNA LITERATURE
HANNA LITERATUREHANNA LITERATURE
Hanna publishes a wide range of catalogs and handbooks for
an equally wide range of applications. The reference literature
currently covers areas such as:
• Water Treatment
• Process
• Swimming Pools
• Agriculture
• Food
• Laboratory
• Thermometry
and many others. New reference material is constantly being
added to the library.
For these and other catalogs, handbooks and leaflets contact
your dealer or the Hanna Customer Service Center nearest to
you. To find the Hanna Office in your vicinity, check our home
page at www.hannainst.com.
Instruction Manual
MULTIPARAMETER
ION SPECIFIC METERS
www.hannainst.com
MANISMMPR4
09/03
Manufacturers since 1978
These Instruments are in
Compliance with the CE Directives
Dear Customer,
Thank you for choosing a Hanna product. Please read this instruction
manual carefully before using the meter. This manual will provide you
with the necessary information for the correct use of the instrument. If
you need additional technical information, do not hesitate to e-mail
us at tech@hannainst.com. These instruments are in compliance
with directives.
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
PRELIMINARY EXAMINATION ................................................................................. 3
GENERAL DESCRIPTION ......................................................................................... 3
PRINCIPLE OF OPERATION ..................................................................................... 3
DISPLAY CODE GUIDE ............................................................................................ 5
TIPS FOR AN ACCURATE MEASUREMENT ............................................................... 6
COMMON SPECIFICATIONS ................................................................................... 6
HI 93710 - pH/CHLORINE .....................................................................................7
HI 93724 - CYANURIC ACID/pH............................................................................. 9
HI 93725 - pH/TOTAL HARDNESS ........................................................................ 11
HI 93741 - TOTAL HARDNESS/IRON LOW RANGE.................................................. 13
HI 93742 - IRON LOW RANGE/MANGANESE LOW RANGE......................................15
HI 93743 - IRON LOW RANGE/pH........................................................................19
HI 93744 - pH/TOTAL HARDNESS/IRON LOW RANGE ............................................ 21
HI 93745 - pH/FREE & TOTAL CHLORINE
TOTAL HARDNESS/IRON LOW RANGE............................................... 23
C 101 - pH/FREE & TOTAL CHLORINE/CYS/IODINE/BROMINE
IRON LOW RANGE ......................................................................... 26
C 104 - pH/FREE & TOTAL CHLORINE/CYS ........................................................... 29
BROMINE MEASUREMENT ...................................................................................32
FREE CHLORINE MEASUREMENT ......................................................................... 34
TOTAL CHLORINE MEASUREMENT ........................................................................36
CYANURIC ACID MEASUREMENT.......................................................................... 38
HARDNESS MEASUREMENT .................................................................................39
IODINE MEASUREMENT ....................................................................................... 42
IRON LOW RANGE MEASUREMENT ...................................................................... 44
pH MEASUREMENT ............................................................................................. 46
BATTERY REPLACEMENT ....................................................................................... 47
ACCESSORIES ..................................................................................................... 48
WARRANTY ......................................................................................................... 49
OTHER ISM FROM HANNA...................................................................................50
CE DECLARATION OF CONFORMITY ......................................................................51
Potassium HI 93750 0.0 to 50.0 mg/L Tetraphenylborate
Sulfate HI 93751 0 to 150 mg/L Turbidimetric
Silica HI 93705 0.00 to 2.00 mg/L Heteropoly Blue
Silver HI 93737 0.000 to 1.000 mg/L PAN
Zinc HI 93731 0.00 to 3.00 mg/L Zincon
CE DECLARATION OF CONFORMITYCE DECLARATION OF CONFORMITY
CE DECLARATION OF CONFORMITY
CE DECLARATION OF CONFORMITYCE DECLARATION OF CONFORMITY
Recommendations for Users
Before using these products, make sure that they are entirely suitable for the environment in which
they are used.
Operation of these instruments in residential area could cause unacceptable interferences to radio and
TV equipments, requiring the operator to take all necessary steps to correct interferences.
Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC
performance.
To avoid damages or burns, do not perform any measurement in microwave ovens.
2
51
OTHER ISM FROM HANNAOTHER ISM FROM HANNA
OTHER ISM FROM HANNA
OTHER ISM FROM HANNAOTHER ISM FROM HANNA
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
Single-parameter Colorimeters
Description Code Range Method
Aluminum HI 93712 0.00 to 1.00 mg/L Aluminon
Ammonia LR HI 93700 0.00 to 3.00 mg/L Nessler
Ammonia MR HI 93715 0.00 to 9.99 mg/L Nessler
Ammonia HR HI 93733 0.0 to 50.0 mg/L Nessler
Bromine HI 93716 0.00 to 8.00 mg/L DPD
Calcium HR 0 to 400 mg/L Oxalate
& Magnesium HR HI 93752 0 to 150 Calmagite
Chlorine, Free HI 93701 0.00 to 2.50 mg/L DPD
Chlorine, Total HI 93711 0.00 to 3.50 mg/L DPD
Chlorine, Free HR 0.00 to 9.99 mg/L DPD
& Total HR HI 93734 0.00 to 9.99 mg/L DPD
Chlorine Dioxide HI 93738 0.00 to 2.00 mg/L Chlorophenol Red
Chloride HI 93753 0.0 to 20.0 mg/L Mercury (II) Thiocyanate
Chromium VI, LR HI 93749 0 to 300 µg/L Diphenylcarbohydrazide
Chromium VI, HR HI 93723 0 to 1000 µg/L Diphenylcarbohydrazide
Color of Water HI 93727 0 to 500 PCU Colorimetric Platinum Cobalt
Copper, LR HI 93747 0 to 990 µg/L Porphyrin
Copper, HR HI 93702 0.00 to 5.00 mg/L Bicinchoninate
Cyanide HI 93714 0.000 to 0.200 mg/L Pyridine-Pyrazalone
Cyanuric Acid HI 93722 0 to 80 mg/L Turbidimetric
Fluoride HI 93729 0.00 to 2.00 mg/L SPADNS
Fluoride, HR HI 93739 0.0 to 20.0 mg/L SPADNS
Hardness, Ca HI 93720 0.00 to 2.70 mg/L Calmagite/colorimetric
Hardness, Mg HI 93719 0.00 to 2.00 mg/L EDTA/colorimetric
Hardness, Total HI 93735 0 to 750 mg/L Calmagite
Hydrazine HI 93704 0 to 400 µg/L p-Dimethylaminobenzaldehyde
Iodine HI 93718 0.0 to 12.5 mg/L DPD
Iron, LR HI 93746 0 to 400 µg/L TPTZ
Iron, HR HI 93721 0.00 to 5.00 mg/L Phenantroline
Manganese, LR HI 93748 0 to 300 µg/L PAN
Manganese, HR HI 93709 0.0 to 20.0 mg/L Periodate Oxidation
Molybdenum HI 93730 0.0 to 40.0 mg/L Mercaptoacetic Acid
Nickel LR HI 93740 0.000 to 1.000 mg/L PAN
Nickel HR HI 93726 0.00 to 7.00 g/L Photometric
Nitrate HI 93728 0.0 to 30.0 mg/L Cadmium Reduction
Nitrite, LR HI 93707 0.00 to 0.35 mg/L Diazotization
Nitrite, HR HI 93708 0 to 150 mg/L Ferrous Sulfate
pH HI 93710 5.9 to 8.5 pH Phenol Red
Phosphate, LR HI 93713 0.00 to 2.50 mg/L Ascorbic Acid
Phosphate, HR HI 93717 0.0 to 30.0 mg/L Amino Acid
Phosphorus HI 93706 0.0 to 15.0 mg/L Amino Acid
Remove the instrument from the packing material and examine it
carefully to make sure that no damage has occurred during shipment. If there is any damage, notify your Dealer.
Each Ion Specific Meter is supplied complete with:
• 9V Battery
• Two Sample Cuvets and Caps*
• One Transport Cap
Note: Save all packing material until you are sure that the instru-
ment functions correctly. Any defective item must be returned
in its original packing with the supplied accessories.
* HI 93725 is supplied with 3 cuvets and caps
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
The Hanna Instruments Ion Specific Meters are portable, microprocessor-based colorimeters that measure the ion content in water and
waste waters.
The meters use an exclusive positive-locking system to ensure that the
cuvet is in the same place every time it is placed into the measurement cell.
The reagents are in liquid or powder form and are supplied in bottles
or in packets. The amount of reagent is precisely dosed to ensure
maximum repeatability.
Display codes aid the user in routine operations.
The meters have an auto-shut off feature that will turn the meter off
after 10 minutes of non-use.
PRINCIPLE OF OPERATIONPRINCIPLE OF OPERATION
PRINCIPLE OF OPERATION
PRINCIPLE OF OPERATIONPRINCIPLE OF OPERATION
The color of every object we see is determined by a process of
absorption and emission of the electromagnetic radiation (light) of its
molecules.
Colorimetric analysis is based on the principle that specific compounds
react with others and form a color, the intensity of which is
proportional to the concentration of the substance to be measured.
When a substance is exposed to a beam of light of intensity Io, a
portion of the radiation is absorbed by the substance's molecules and
a radiation of intensity I, lower than Io, is emitted.
50
3
The quantity of radiation absorbed is given by the Lambert-Beer
Law:
log Io/I = ελ c d
Where log Io/I = Absorbance (A)
ελ= molar extinction coefficient of the substance at
wavelength λ
c = molar concentration of the substance
d = optical distance light travels through sample
Therefore, the concentration "c" can be calculated from the color
intensity of the substance determined by the emitted radiation I, as
the other factors are known.
LED
EMITTED LIGHT
CUVET MICROPROCESSOR
BLOCK DIAGRAM OF A COLORIMETER
LIGHT
DETECTOR
A monochromatic LED (Light Emitting Diode) emits radiation at a
single wavelength, supplying the system with the intensity Io.
Since a substance absorbs the color complimentary to the one it emits
(for example, a substance appears yellow because it absorbs blue
light), Hanna colorimeters use LEDs that emit the appropriate
wavelength to measure the sample.
The optical distance (d) is measured by the diameter of the cuvet
containing the sample.
The photoelectric cell collects the radiation I that is not absorbed by
the sample and converts it into an electric current, producing a
potential in the mV range.
The microprocessor uses this potential to convert the incoming value
into the desired measuring unit and to display it on the LCD.
The measurement process is done in two phases: setting the meter to
zero and the actual measurement.
The cuvet has a very important role because it is an optical element,
and thus requires particular attention.
It is important that both the measurement and the calibration
(zeroing) cuvets are optically identical to provide the same measurement conditions. Whenever possible use the same cuvet for both.
It is also necessary that the cuvet's surface is clean and not scratched,
in order to avoid measurement interference due to unwanted reflection and absorption of light.
WARRANTYWARRANTY
WARRANTY
WARRANTYWARRANTY
All Hanna Instruments meters are warranted for two years
against defects in workmanship and materials when used for their
intended purpose and maintained according to instructions.
This warranty is limited to repair or replacement free of charge.
Damages due to accidents, misuse, tampering or lack of prescribed
maintenance are 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 failure. If the repair
is not covered by the warranty, you will be notified of the charges
incurred.
If the instrument is to be returned to Hanna Instruments, first obtain
a Returned Goods Authorization Number from the Customer Service
department and then send it with shipment costs prepaid. When
shipping any instrument, make sure it is properly packaged 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.
Hanna Instruments reserves the right to modify the design,
construction and appearance of its products without advance notice.
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49
ACCESSORIESACCESSORIES
ACCESSORIES
ACCESSORIESACCESSORIES
REAGENT SETS
HI 93701-01 100 free chlorine tests
HI 93701-03 300 free chlorine tests
HI 93701-F 300 free chlorine tests (liquid version)
HI 93701-T 300 total chlorine tests (liquid version)
HI 93710-01 100 pH tests
HI 93710-03 300 pH tests
HI 93711-01 100 total chlorine tests
HI 93711-03 300 total chlorine tests
HI 93716-01 100 bromine tests
HI 93716-03 300 bromine tests
HI 93718-01 100 iodine tests
HI 93718-03 300 iodine tests
HI 93719-01 100 Mg hardness tests
HI 93719-03 300 Mg hardness tests
HI 93722-01 100 cyanuric acid tests
HI 93722-03 300 cyanuric acid tests
HI 93746-01 50 iron LR tests
HI 93746-03 150 iron LR tests
HI 93748-01 50 manganese LR tests
HI 93748-03 150 manganese LR tests
OTHER ACCESSORIES
HI 710009 Blue rubber boot
HI 710010 Orange rubber boot
HI 721310 9V battery (10 pcs)
HI 731318 Tissue for wiping cuvets (4 pcs)
HI 731321 Glass cuvets (4 pcs)
HI 731325 Cap for cuvet (4 pcs)
HI 93703-50 Cuvets cleaning solution (230 mL)
MANISMMPR3 Instruction manual
It is recommended not to touch the cuvet walls with hands.
Furthermore, in order to maintain the same conditions during the
zeroing and the measuring phases, it is necessary to close the cuvet
to prevent any contamination.
DISPLAY CODE GUIDEDISPLAY CODE GUIDE
DISPLAY CODE GUIDE
DISPLAY CODE GUIDEDISPLAY CODE GUIDE
This indicates that the meter is in a ready state
and zeroing can be performed.
Sampling in Progress. This prompt appears each
time the meter is performing a measurement.
This indicates that the meter is in a zeroed state
and measurement can be performed.
A zero reading was not taken. Insert a sample
before adding reagent and press ZERO.
Under range. A blinking "0.00" indicates that the
sample absorbs less light than the zero reference.
Check the procedure and make sure you use the
same cuvet for reference (zero) and measurement.
Over range. A flashing value higher than the
maximum concentration readable (see specifications) indicates that the sample absorbs too much
light, meaning that the concentration is too high.
Dilute the sample.
Light over range. The cuvet is not inserted correctly
and an excess ambient light is reaching the
detector. If the cover is properly installed, then
contact your dealer or the nearest Hanna Customer
Service Center.
Light under range. The zero sample is too dark for
proper zeroing. If this is not the case, contact your
dealer or the nearest Hanna Customer Service
Center.
V
The "V" indicates that the battery voltage is
getting low and the battery needs to be replaced.
This indicates that the battery is dead and must
be replaced.
Note: once this indication is displayed, the meter
will lockup. Change the battery to restart.
48
5
TIPS FOR AN ACCURATE MEASUREMENTTIPS FOR AN ACCURATE MEASUREMENT
E
TIPS FOR AN ACCURATE MEASUREMENT
TIPS FOR AN ACCURATE MEASUREMENTTIPS FOR AN ACCURATE MEASUREMENT
BATTERY REPLACEMENTBATTERY REPLACEMENT
BATTERY REPLACEMENT
BATTERY REPLACEMENTBATTERY REPLACEMENT
The instruction listed below should be carefully followed during testing
to ensure best accuracy.
• Do not let the test sample stand too long after reagent is added or
accuracy will be lost.
• Whenever the cuvet is placed into the measurement cell, it must be
completely free of fingerprints, oil or dirt. Wipe it thoroughly with
HI 731318 or a lint-free cloth prior to insertion.
• It is important that the sample does not contain any debris. This
would corrupt the readings.
• Each time the cuvet is used, the cap must be tightened to the
same degree.
• It is possible to take multiple readings in a row, but it is
recommended that a zero reading be taken for each sample and
that the same cuvet is used for zeroing and measurement.
• It is important to discard the sample immediately after the
reading is taken because the glass might become permanently
stained.
• Shaking the cuvet can generate bubbles in the sample, causing
higher readings. To obtain accurate measurements, remove such
bubbles by swirling or by gently tapping the vial.
• All the reaction times reported in this manual are referred to
20°C (68°F). As a general rule of thumb, they should be doubled
at 10°C (50°F) and halved at 30°C (86°F).
To prolong battery life, switch your meter off after use. However, the
meter has an auto-shut off feature that will turn itself off after 10
minutes of non-use.
A "V" on the LCD indicates low voltage and the
battery should be replaced.
If the battery is not replaced immediately, in
order to prevent erroneous readings due to low
voltage "-BA-" is displayed soon afterwards.
At this point, the meter will completely lockup and will not allow any
commands and the display will go blank.
Battery replacement must only take place in a non-hazardous area
using a 9V alkaline battery.
Simply slide off the battery cover on the back of the meter. Detach the
battery from the terminals and attach a fresh 9V battery while
paying attention to the correct polarity. Replace the battery and the
cover.
V
9V
SLID
OFF
COMMON SPECIFICATIONSCOMMON SPECIFICATIONS
COMMON SPECIFICATIONS
COMMON SPECIFICATIONSCOMMON SPECIFICATIONS
All the ion specific meters in this manual have the following common
features:
Light Life Life of the instrument
Light Detector Silicon Photocell
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Battery Type/Life 1 x 9 volt/40 hours
Auto-Shut off After 10' of non-use
Dimensions 180 x 83 x 46 mm (7.1 x 3.3 x 1.8")
Weight 290 g (10 oz.)
6
The meter will turn on automatically when a new
battery is connected. You can turn it off by pressing
ON/OFF.
47
ON
OFF
pp
H MEASUREMENTH MEASUREMENT
p
H MEASUREMENT
pp
H MEASUREMENTH MEASUREMENT
HI 93710 - pH & ChlorineHI 93710 - pH & Chlorine
HI 93710 - pH & Chlorine
HI 93710 - pH & ChlorineHI 93710 - pH & Chlorine
10 mL
• Fill the cuvet up to the mark with 10 mL of
unreacted sample and replace the cap.
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and “SIP” will appear on the display.
ZERO
• Wait for a few seconds and the display will
show “-0.0-”. Now the meter is zeroed and
ready for measurement.
• Remove the cuvet and add 5
drops of the HI 93710 Phenol
Red Indicator. Replace the cap
x 5
and swirl the solution.
• Reinsert the cuvet into the instrument.
• Press the READ key and “SIP” will appear on the display during
measurement.
• The instrument directly displays the pH measured value on the
Liquid Crystal Display.
The HI 93710 meter measures both pH and chlorine (Cl2, free and
total) content in water and wastewater in the following ranges:
pH 5.9 to 8.5 pH units
Free Chlorine 0.00 to 2.50 mg/L (ppm)
Total Chlorine 0.00 to 3.50 mg/L (ppm).
SPECIFICATIONS
Range pH 5.9 to 8.5
Free Cl20.00 to 2.50 mg/L
Total Cl20.00 to 3.50 mg/L
Resolution 0.1 pH/0.01 mg/L Cl
2
Accuracy ±0.1 pH
±0.03 mg/L ±3% of Cl2 reading
Typical EMC ±0.2 pH
Deviation ±0.02 mg/L Cl
2
Light Source Light Emitting Diode @ 555 nm
Method Adaptation of the EPA recommended DPD method
330.5 for chlorine analysis. The reaction with
reagents causes a pink tint in the sample.
For pH, Phenol red method. The reaction with
reagents causes a red tint in the sample.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93701-0 Free Cl
DPD 1 packet
2
HI 93710
pH
46
7
pH/Chlorine
HI 93711-0 Total Cl
DPD 1 packet
2
Liquid version (chlorine):
Code Unit Description Quantity
HI 93701A-F Free Cl
HI 93701B-F Free Cl
HI 93701A-T Total Cl
HI 93701B-T Total Cl
HI 93701C-T Total Cl
2
2
2
2
2
DPD1 indicator 3 drops
DPD1 buffer 3 drops
DPD1 indicator 3 drops
DPD1 buffer 3 drops
DPD3 solution 1 drop
REAGENT SETS
HI 93701-01 Reagents for 100 free chlorine tests
HI 93701-03 Reagents for 300 free chlorine tests
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93711-01 Reagents for 100 total chlorine tests
HI 93711-03 Reagents for 300 total chlorine tests
HI 93701-F Reagents for 300 free chlorine tests (liquid version)
HI 93701-T Reagents for 300 total chlorine tests (liquid version)
For other accessories see page 48.
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF.
ON
OFF
• The meter will automatically default to pH measurement mode.
• When the LCD displays “- - -”, it is ready.
pH
pH MEASUREMENTS
In order to perform pH measurements, follow the procedure on
page 46.
CHLORINE MEASUREMENTS
• Press the pH/CL range key to select the chlorine scale. “C” will
appear on the LCD.
• Follow the procedures on page 34 and 36.
Note: Free and total chlorine have to be measured separately
following the indicated procedure with fresh unreacted samples
if both values are requested.
• Fill a cuvet with 10 mL of the reacted
sample up to the mark and replace the
cap. This is the sample.
10 mL
• Insert the sample into the instrument.
• Wait for 3 minutes and then press READ. "SIP" will appear
during measurement.
• The instrument directly displays concentration in µg/L of iron on
the Liquid Crystal Display.
NoteNote
Note: For better accuracy wash glassware with HCl 6N.
NoteNote
INTERFERENCES
Interference may be caused by:
Cadmium above 4.0 mg/L
3+
Chromium
Chromium
Cobalt above 0.05 mg/L
Copper above 0.6 mg/L
Cyanide above 2.8 mg/L
Manganese above 50.0 mg/L
Mercury above 0.4 mg/L
Molybdenum above 4.0 mg/L
Nickel above 1.0 mg/L
Nitrite ion above 0.8 mg/L
Sample pH should be between 3 and 4 to avoid developed color to
fade or turbidity.
above 0.25 mg/L
6+
above 1.2 mg/L
HI 93710
pH/Chlorine
8
45
Iron LR
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