Hanna Instruments HI 95759 User Manual
Instruction Manual
HI 95759
Maple Syrup
Transmittance Analyzer
www.hannainst.com
WARRANTY
HI 95759 is warranted for two years against defects in workmanship
and materials when used for its intended purpose and maintained
according to the 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 your dealer. 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
use of the instrument. Please read it carefully before using
the analyzer. If you need additional technical information,
do not hesitate to e-mail us at tech@hannainst.com or call
1-800-426-6287.
This instrument is in compliance with directives
EN 50081-1 and EN 50082-1.
PRELIMINARY EXAMINATION
Please examine this product carefully. Make sure that the
instrument is not damaged. If any damage occured during
shipment, please notify your Dealer.
Each HI 95759 Transmittance Analyzer is supplied complete
with:
• Six Sample Cuvets • 9V Battery
• One Light Shield Cap • Instruction Manual
• Two 5 mL Syringes • Rigid carrying case
• 30 mL Glycerol (1 bottle)
Note: save all packing material until you are sure that the
instrument works correctly. Any defective item must
be returned in its original packing.
GENERAL DESCRIPTION
The HI 95759 portable microprocessor analyzer measures
the percent light transmittance of maple syrup compared to
analytical reagent grade glycerol. The transmittance value
allows identification of the syrup quality class.
Measurements are made using matched square optical
cuvets having a 10 mm light path.
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.
SIGNIFICANCE AND USE
The primary characteristic for classifying maple syrup is color.
When syrup is very light in color, as matching the minimum
light transmittance standards, the grade assigned to syrup
is high. When syrup color is dark, the grade is low. Color
classes are expressed in percent of light transmission as
compared to an analytical Glycerol Standard Reference fixed
at one hundred percent transmission. All syrup is considered
to be at minimum density, 66.0 degrees Brix at 68 °F (20
°C), and to have no flavors nor other characteristics extraneous to pure maple syrup.
Color Class Range (% Transmittance)
Grade A Light Amber 75.0 to 100.0
Grade A Medium Amber 60.5 to 74.9
Grade A Dark Amber 44.0 to 60.4
Grade B for reprocessing 27.0 to 43.9
Substandard less than 27.0
SPECIFICATIONS
SPECIFICATIONS
Range 0.0 to 100.0% Transmittance
Resolution 0.1% Transmittance
Precision ±1% @ 75.0% Transmittance
Typical EMC Dev. ±0.1% Transmittance
Light Source Tungsten lamp with narrow band
interference filter @ 560 nm
Method Direct Measurement
Light Detector Silicon Photocell
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Battery Type 1 x 9 volt
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 STANDARD
Description Quantity/test
Glycerol 4 mL
GUIDE TO DISPLAY CODES
This prompt appears for 1 second
each time the instrument is turned
on.
This indicates that the meter is in a
ready state and calibration can be
performed.
Sampling in Progress. This flashing
prompt appears each time the meter
is performing a measurement.
This indicates that the meter has
been calibrated and measurement
can be performed.
Light over range: the cuvet is not
inserted correctly and an excess
ambient light is reaching the detector.
If the cap is properly installed, then
contact your dealer or the nearest
Hanna Customer Service Center.
The blinking "BAT" 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. Once
this indication is displayed, the meter
will lock up. Change the battery and
restart.
“Configuration”: this indicates that
the meter has lost its configuration.
Contact your dealer or the nearest
Hanna Customer Service Center.
ERROR MESSAGES
a) on calibration
This indicates that the calibration
procedure failed due to a low signal-tonoise ratio. In this case press CAL again.
“No Light”: the instrument cannot adjust
the light level. Please check that the
sample does not contain any debris.
“Light Low”: there is not enough light
to perform a measurement. Please check
the preparation of the Glycerol cuvet.
“Light High”: there is too much light to
perform a measurement. Please check
the preparation of the Glycerol cuvet.
b) on sample reading
There is too much light for the sample
measurement. Please check if the right
sample cuvet is inserted.
“Cal”: calibration was not performed.
Follow the instruction in the
operational guide for calibrating
the meter.
A blinking “100.0” on sample reading
is a warning that the Glycerol Reference
cuvet is still inserted in the instrument,
or indicates that the sample absorbs less
light than the Glycerol Reference. Check
the procedure and recalibrate the
instrument.
GENERAL TIPS FOR AN
ACCURATE MEASUREMENT
The instructions listed below should be carefully followed
during testing to ensure best accuracy.
• Use matched square cuvets, having 4 clear faces and a
10 mm path length.
• Do not touch the cuvet walls with hands.
• Whenever the cuvet is placed into the measurement cell,
it must be dry outside, and completely free of fingerprints,
oil or dirt. Wipe it thoroughly with HI 731318 or a lintfree cloth prior to insertion.
• It is important that the sample does not contain any
debris. This would corrupt the readings.
• Samples should be completely free of air bubbles. If
bubbles are present, let the samples stand until air
bubbles have completely disappeared (not more than
30 minutes, see note below).
• It is recommended to take the sample of maple syrup in
the middle of the container.
• It is recommended to take and analyze samples at room
temperature.
• Do not use the same cuvet with glycerol for more than
5-10 times to perform calibration and dispose of it after
1 day has passed.
• Never re-use maple syrup sample cuvets, dispose of
them after use.
• Use one syringe for glycerol, and the other one for syrup
in order to avoid contamination.
Note: Maple Syrup samples exposed to direct sunlight
and/or air will darken over time. This is caused by
microorganisms.
OPERATIONAL GUIDE
• Turn the meter on by pressing ON/OFF.
When the LCD displays “759”, it is ready.
• To perform calibration, use a
first syringe to fill one cuvet
with 4 mL of Glycerol, up to 5
mm (0.2”) below the rim. This
is the Glycerol Standard
Reference.
• Place the Glycerol cuvet into
the holder paying attention to
the direction of the light
indicated by the arrows on the
instrument. Then put the light
shield cap on and ensure that
the notch on the cap is
positioned securely into the
groove.
• Press CAL and “SIP” will blink on the display.
• After a few seconds the display
will show “100.0”. The meter is
now calibrated and ready for
measurement.
• Remove the Glycerol cuvet.
• Use the second syringe to add
to a clean cuvet 4 mL of maple
syrup, up to 5 mm (0.2”)
below the rim. This is the
sample.
• Place the sample cuvet into
the holder paying attention to
the direction of the light
indicated by the arrows on the
instrument. Then put the light
shield cap on and ensure that
the notch on the cap is
positioned securely into the
groove.
• Press READ and “SIP” will blink during measurement.
• The instrument directly displays percent of light
transmittance as compared to Glycerol Standard (fixed
at one hundred percent).
• Check in the manual or on the front panel to which
color class the transmittance value corresponds.
INTERFERENCES
Interference may be caused by air bubbles or turbidity in
the sample. Scratched or dirty cuvets will also affect readings.
Always check clearness of cuvets prior to use.
BATTERY REPLACEMENT
Battery replacement must only take place in a non-hazardous
area. 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 replace the cover.
9V
SLIDE
OFF
ACCESSORIES
ANALYSIS KIT
C219/C220 Kit Kit for Maple Syrup analysis, including
82 cuvets, 30 mL of Glycerol and two 5
mL syringe (75 tests average)
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 731335 Caps for cuvets (4 pcs)
CE DECLARATION
OF CONFORMITY
Recommendations for Users
Before using these products, make sure that they are entirely suitable for your specific
application and for the environment in which they are used.
Operation of these instruments may cause unacceptable interferences to other electronic
equipments, this 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 put the instrument in microwave oven. For yours and
the instrument safety do not use or store the instrument in hazardous environments.
IST95759R1 09/02
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