Hanna Instruments HI759 User manual

HI759
Maple Syrup Digital Grader
INSTRUCTION MANUAL
Specications
Range golden, amber, dark, very dark
Light Source light emitting diode @ 560 nm
Light Detector silicon photocell
Environment 0 to 50°C (32 to 122°F); RH 95% max
Batter y Type 1 x 1.5V AAA
Auto-Off after 10 minutes of non-use
Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”)
Weight 64 g (2.3 oz)
Functional Description
Preliminary Examination
Please examine this product carefully. Make sure that the instrument is not
damaged. If any damage occurred during shipment, please notify your Dealer.
Each HI759 meter is supplied complete with:
• (3) Sample cuvettes and caps
• Glycerol standard cuvette
• (3) 5 mL syringes with tips
• 1.5V AAA battery
• Instruction manual and quick reference guide
Errors and Warnings
Cover
Cuvette with cap
Cuvette holder
LCD Liquid Crystal Display
Operation button
Out of Range: The sample is out of the measurement
range. Check to make sure you use the sealed glycerol
reference cuvette to calibrate the meter before taking
a measurement.
Inverted Cuvette: The glycerol reference cuvette and
sample have been inserted in the wrong order. Otherwise,
check if the cuvette has been inserted upside down.
Low Battery: The battery is low and must
be replaced soon. Normal operation of the
instrument will not be interrupted.
Dead Battery: The battery is dead and must be
replaced. Once the battery display is ashing, normal
operation of the instrument will be interrupted.
Change the battery and restart the meter.
Light High: There is too much light to
perform a measurement. Please check that
the cover is fully closed, and that the glycerol
reference cuvette was used properly.
Light Low: There is not enough light to perform a
measurement. Check to see if the light is blocked or
dirty. Do not use a syrup sample to calibrate the meter.
Error: Internal error. Please contact your
local Hanna Customer Service Center.
Thank You
Thank you for choosing a Hanna Instruments product. Please read
this instruction manual carefully before using the instrument.
For more information about Hanna and our products,
visit www.hannainst.com.
For technical support, contact your local Hanna oce or email
us at [email protected]
Find your local Hanna oce on www.hannainst.com

Measurement
Procedure
Turn the meter on by pressing the button.
All tags will be displayed. The display will
show “INSERT REF” with “PRESS” blinking
to indicate the meter is ready to calibrate.
Open the cover and insert the
sealed glycerol reference cuvette
into the meter. Close the cover.
Press the button to calibrate the meter.
The maple leaf icon will blink to show
that calibration is taking place.
The display will then show “INSERT
SAMPLE” with “PRESS” blinking when the
meter has successfully been calibrated.
Fill a clean, dry cuvette with 10 mL of
maple syrup sample and replace the cap.
Open the cover and insert the cuvette
into the meter. Close the cover.
Press the button to take the
measurement. The maple leaf
icon will blink to show that a
measurement is taking place.
The meter directly displays the grade of
maple syrup. To turn o, press and hold
the button for 3 seconds. The meter
automaticallyturns o after 10 minutes.
Recommendations for Users
Before using Hanna products, make sure that they are entirely suitable for your
specic application and for the environment in which they are used. Operation
of these instruments may cause unacceptable interferences to other electronic
equipment, thus requiring the operator to take all necessary steps to correct such
interferences. Any variation introduced by the user to the supplied equipment
may degrade the instrument’s 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.
Code Description
HI759-11 glycerol standard cuvettes (2 pcs)
HI93703-57 glycerol bottles, 30 mL (4 pcs)
HI731318 cloth for wiping cuvettes (4 pcs)
HI731321 glass cuvettes (4 pcs)
HI731225 black cuvette caps for Checker®HC (4 pcs)
HI740028 1.5V AAA batteries (4 pcs)
HI93703-50 cuvette cleaning solution (230 mL)
Accessories
HI759 INSTMAN 1.3 09/15
Hanna Instruments reserves the right to
modify the design, construction, or appearance
of its products without advance notice.
Warranty
HI759 is warranted for a period of one year after date of purchase 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. Damage due to accidents, misuse,
tampering or lack of prescribed maintenance is not covered. If service is
required, contact your local Hanna oce. 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 notied of the charges
incurred. If the instrument is to be returned to Hanna Instruments, rst
obtain a Return 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.
Battery Management
To conserve battery, the instrument shuts down after
10 minutes of non-use. To replace the battery, turn the
instrument o by holding the button until the meter shuts
o. Turn the instrument upside down and remove the
battery cover with a screwdriver. Remove the battery from
its location and replace it with a new one, inserting the
negative end rst. Replace the battery cover and screw.
Tips for an Accurate
Measurement
When taking measurements, the outside of the cuvette
must be dry and free of syrup, ngerprints, oil, or dirt.
Wipe it thoroughly with a lint-free cloth prior to insertion.
Make sure cuvettes and syringes are completely
dry before using. Excess water will leave streaks
in the syrup sample which may aect results.
Dispense or pour the sample slowly. When transferring
the syrup into the cuvette, be careful not to generate
bubbles as they may cause inaccurate readings.
Grade A Color
Classes Taste Light Transmittance
Grade A Golden Delicate ≥75.0
Grade A Amber Rich 50 to 74.9
Grade A Dark Robust 25 to 49.9
Grade A Very Dark Strong < 25
USDA Standards