Hanna Instruments HI759 - Maple Syrup Digital Grader Manual
- Instruction manual (2 pages) ,
- Instruction manual (2 pages)
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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
- 5 mL syringes with tips
- 1.5V AAA battery
- Instruction manual and quick reference guide
Specifications
| 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 |
| Battery 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
Errors and Warnings
 | 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 flashing, 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. |
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 off, press and hold the button for 3 seconds. The meter automaticallyturns off after 10 minutes.
USDA Standards
| 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 |
Tips for an Accurate Measurement
When taking measurements, the outside of the cuvette must be dry and free of syrup, fingerprints, 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 affect 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.
Battery Management
To conserve battery, the instrument shuts down after 10 minutes of non-use. To replace the battery, turn the instrument off by holding the button until the meter shuts off. 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 first. Replace the battery cover and screw.
Accessories
| 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 CheckerHC (4 pcs) |
| HI740028 | 1.5V AAA batteries (4 pcs) |
| HI93703-50 | cuvette cleaning solution (230 mL) |
For more information about Hanna and our products, visit www.hannainst.com.
For technical support, contact your local Hanna office or email us at tech@hannainst.com
Find your local Hanna office on www.hannainst.com
Documents / Resources
References
Download manual
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Hanna Instruments HI759 - Maple Syrup Digital Grader Manual
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