Hanna Instruments HI 93752 User Manual
Instruction Manual
HI 93752
Calcium & Magnesium
High Range
ISM
www.hannainst.com
WARRANTYWARRANTY
WARRANTY
WARRANTYWARRANTY
HI 93752 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.
Damages due to accident, 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.
This Instrument is in
Compliance with the CE Directives
Dear Customer,
Thank you for choosing a Hanna product. This manual will
provide you with the necessary information for the correct
operation of the meter. Please read it carefully before using
the meter. If you need additional technical information, do
not hesitate to e-mail us at tech@hannainst.com.
This instrument is in compliance with directives
EN 50081-1 and EN 50082-1.
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
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: Conserve all packing material until the instrument
has been observed to function correctly. Any defective
item must be returned in its original packing.
BATTERY REPLACEMENTBATTERY REPLACEMENT
BATTERY REPLACEMENT
BATTERY REPLACEMENTBATTERY REPLACEMENT
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.
9V
SLIDE
OFF
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
The HI 93752 meter measures the calcium content in the 0
to 400 mg/L (ppm) range and the magnesium content in
the 0 to 150 mg/L (ppm) range in water and wastewater.
The meter uses 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 form and are supplied in bottles.
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
instrument off after 10 minutes of non-use.
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
Range 0 to 400 mg/L (ppm) as Calcium
0 to 150 mg/L (ppm) as Magnesium
Resolution 1 mg/L
Accuracy ±10 mg/L ±5% of reading (Ca)
±3 mg/L ±3% of reading (Mg)
Typical EMC ±1 mg/L
Deviation
Light Source Light Emitting Diode @ 470 nm
Method To determine Calcium: Adaptation of the
Oxalate method
To determine Magnesium: Adaptation of
the Calmagite method
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.).
REQUIRED REAGENTS
Code Description Quantity
- Buffer Reagent 4 drops
HI 93752A-0 Ca Calcium Buffer Reagent 7 mL
HI 93752B-0 Ca Calcium Oxalate Reagent 1 mL
HI 93752A-0 Mg Magnesium Buffer Reagent 1 mL
HI 93752B-0 Mg Magnesium Indicator 9 mL
Reagent
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.
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
MEASUREMENT PROCEDURE TO
DETERMINE CALCIUM
• Turn the meter on by pressing ON/OFF.
• When the LCD displays "- - -", it is
ready.
• Select Calcium by pressing Ca/Mg. A "c" will
appear on the right corner of the display.
• Using the 5 mL syringe add exactly
3.00 mL of sample to the cuvet.
probable
level of liquid
taken up by
syringe
• Add 4
drops of
Buffer
Reagent.
• Use the pipette to fill the cuvet up to
the 10 mL mark with the HI 93752A-0
Ca reagent.
• Replace the cap
and invert several
times to mix.
• 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.
• Wait for a few seconds and the display
will show "-0.0-". Now the meter is zeroed and ready for measurement.
• Remove the cuvet.
• Using the 1 mL syringe,
add exactly 1 mL of the HI
93752B-0 Ca Oxalate reagent. Replace the cap and
invert the cuvet 10 times
to mix.
ZERO
1 mL
3 mL
of sample
10 mL
ON
OFF
• Wait for 5 minutes, then invert again the cuvet 10
times and after that reinsert the cuvet into the instrument.
• Wait for 10 seconds, press
READ and SIP will appear on the display.
• The instrument directly displays concentration in mg/L of
Calcium on the Liquid Crystal Display.
Note: To ensure accurate results, perform the tests at room
temperature, between 18°C and 28°C (65F to 83F).
Interferences:
concentration reading
Acidity (as CaCO3) above 1000 mg/L lower
Alkalinity (as CaCO3) above 1000 mg/L higher
Magnesium (Mg2+) above 400 mg/L higher
MEASUREMENT PROCEDURE TO
DETERMINE MAGNESIUM
• Select Magnesium by pressing Ca/Mg. An
"m" will appear on the right corner of the
display.
• Using one 1 mL syringe add exactly 1.00
mL of HI 93752A-0
Mg Buffer reagent to
the cuvet and use the
pipette to fill the cuvet
up to the 10 mL mark
with the HI 93752B-0
Mg Indicator reagent.
• Replace the cap and
invert several times to
mix.
• 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.
• Wait for a few seconds and the display
will show "-0.0-". Now the meter is zeroed and ready for measurement.
• Remove the cuvet.
• Using the other 1 mL syringe, add to the
cuvet exactly 0.5 mL of sample.
Note: Do not mix up the two syringes!
1 mL
0.5 mL
of sample
• Replace the cap and
invert several times to
mix. Wait for 15 seconds.
• Reinsert the cuvet into the instrument.
• Press READ and SIP will
appear on the display.
• The instrument directly displays concentration in mg/L of
Magnesium on the Liquid Crystal Display.
Interferences:
concentration reading
Acidity (as CaCO3) above 1000 mg/L lower
Alkalinity (as CaCO3) above 1000 mg/L higher
Calcium (Ca2+) above 200 mg/L higher
Iron -- higher
Aluminum -- higher
Copper -- higher
FOR BEST RESULTS BOTH FOR CALCIUM AND MAGNESIUM DETERMINATION:
Intensely colored samples will cause interference, therefore
they should be adequately treated before performing the
test. Suspended matter in large amounts should be removed by prior filtration.
ACCESSORIES FOR CALCIUM AND MAGNESIUM
• 1 syringe (5 mL) with tip
• 3 syringes (1 mL) with tips
• 2 plastic pipettes
TIPS FOR AN ACCURATETIPS FOR AN ACCURATE
TIPS FOR AN ACCURATE
TIPS FOR AN ACCURATETIPS FOR AN ACCURATE
MEASUREMENTMEASUREMENT
MEASUREMENT
MEASUREMENTMEASUREMENT
The instruction listed below should be carefully followed during testing
to ensure best accuracy.
• Do not touch the cuvet walls with hands.
• 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.
• Do not let the test sample stand too long after reagent is added or
accuracy will be affected.
• 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.
• 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).
ACCESSORIESACCESSORIES
ACCESSORIES
ACCESSORIESACCESSORIES
REAGENT SETS
HI 93752-01 Reagents for 100 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 Caps for cuvets (4 pcs)
HI 740142 1 mL graduated syringe
HI 740143 1 mL graduated syringes (6 pcs)
HI 740144 Pipette tip (6 pcs)
HI 740157 Plastic refilling pipette (20 pcs)
HI 93703-50 Cuvets cleaning solution (230 mL)
C115-00300 5 mL graduated syringe
CE DECLARATIONCE DECLARATION
CE DECLARATION
CE DECLARATIONCE DECLARATION
OF CONFORMITYOF CONFORMITY
OF CONFORMITY
OF CONFORMITYOF 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.
PRINTED IN PORTUGAL
IST93752 11/99
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