Instruction Manual HI 83746 REDUCING SUGARS ISM for wine analysis w w . h a n n 20 a i n s t . c o m MAN83746R2 03/06 w This Instrument is in Compliance with the CE Directives www.hannainst.
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 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. TABLE OF CONTENTS PRELIMINARY EXAMINATION .............................................................................................. 3 GENERAL DESCRIPTION .
CE DECLARATION OF CONFORMITY 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.
GENERAL DESCRIPTION BATTERIES REPLACEMENT The HI 83746 is an auto-diagnostic portable microprocessor meter that benefits from Hanna’s years of experience as a manufacturer of analytical instruments. It has an 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.
If the expected RS concentration is less than 5.00 g/L please refer to the instructions below: SPECIFICATIONS • Preheat the Hanna Reactor HI 839800 to 105 °C (221°F). For a correct use of the reactor follow the Reactor Instruction Manual. Use of the optional HI 740217 safety shield is recommended. Do not use an oven or microwave. Range Resolution Precision Light Source Light Detector Method Environment Battery Type Dimensions Weight • Remove the cap from two vials HI 83746A-0 Fehling Solution A.
PRINCIPLE OF OPERATION Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation and matter. When a light beam crosses a substance, some of the radiation may be absorbed by atoms, molecules or crystal lattices.
A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned and beamed to the sample contained in the cuvet. The optical path is fixed by the diameter of the cuvet. Then the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light beam of intensity Io or I. The photoelectric cell collects the radiation I that is not absorbed by the sample and converts it into an electric current, producing a potential in the mV range.
FUNCTIONAL DESCRIPTION MEASUREMENT INSTRUMENT DESCRIPTION Note: A single blank vial may be used more than once; the blank vial is stable up to one week if stored in a dark place at room temperature. Always use the same lot of reagents for blank and samples. For most accurate measurement run a blank for each set of mesurement. Notes: i) If the expected RS concentration is above 50.00 g/L (for example for must analysis), it is recommended to dilute the sample 4 or 5 times with water.
GUIDE TO DISPLAY CODES MEASUREMENT PROCEDURE SAMPLE PREPARATION FOR RED WINE To remove interference of phenols, samples of Red Wine must be treated with activated carbon. This prompt appears for a few seconds each time the instrument is turned ON. • Fill one cuvet with 10 mL of Red Wine. These prompts indicate the type of power supply: “Line” (if the external power supply is used) or the battery level. • Add 2 spoons of HI 93703-59 Charcoal to the cuvet.
Indicates that the batteries are dead and must be replaced. After this message appears, the instrument is switched off. Change the batteries and restart the meter. GENERAL TIPS FOR AN ACCURATE MEASUREMENT ERROR MESSAGES • For dosing the wine sample and the reagent, we recommend to use the supplied Hanna automatic pipettes HI 731340 (200 µL) and HI 731341 Hanna automatic pipette (1000 µL). For a correct use of the Hanna automatic pipette, please follow the related Instruction Sheet.
