Hanna Instruments HI 96760 - Manual (Page 3)

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GENERAL DESCRIPTION
ABBREVIATIONS
SPECIFICATIONS
The HI 96760 is an auto diagnostic portable microprocessor meter that benefits from Hanna’s
years of experience as a manufacturer of analytical instruments. It has the advanced optical
system based on a special tungsten lamp and a narrow band interference filter that allows most
accurate and repeatable readings. All instruments are factory calibrated and the electronic and
optical design minimizes the need of frequent calibration.
All instruments are splash waterproof and the lamp and filter units are protected from dust or dirt
by a transparent cup. This makes the instruments fulfill field applications. Display messages aid
the user in routine operation. The meter has an auto-shut off feature that will turn off the
instrument after 10 minutes of non use in
measurement mode or after 1 hour if left in
calibration mode.
The meter uses an exclusive positive-locking system to ensure that the cuvette is in the same
position every time it is placed into the measurement cell. It is designed to fit a cuvette with a
larger neck making it easier to add both sample and reagents. The cuvette is made from special
optical glass to obtain best results.
The
HI 96760 measures the percent light transmittance of maple syrup compared to analytical
grade glycerol. The transmittance value allows identification of the syrup quality class.
degree Celsius
degree Fahrenheit
milligrams per liter. mg/L is equivalent to ppm (parts per million)
milliliter
millivolts
Liquid Crystal Display °C:
°F:
mg/L:
mL:
mV:
LCD:
Range 0.0 to 100.0% Transmittance
Resolution 0.1% Transmittance
Accuracy ±3% @ 75.0% Transmittance
Typical EMC Deviation ±0.1% Transmittance
Light Source
Tungsten lamp
Light Detector Silicon Photocell with narrow band interference filter @ 560nm
Method Direct Measurement
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 in measurement mode;
after 1 hour of non-use in calibration mode;
with last reading reminder.
Dimensions 192 x 102 x 67 mm (7.6 x 4 x 2.6")
Weight 290 g (10 oz.).
REQUIRED STANDARD
Description
Quantity/test
Glycerol 4 mL
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 or other characteristics extraneous to pure maple syrup.
Color Class Range (% Tansmittance)
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