HI 96804 Refractometer for Invert Sugar Measurements
Contents
1. Sample is reading lower than the 0 96 BRIX standard used for meter calibration Sample exceeds maximum measurement range Wrong calibration used to zero instrument Use deionized or distilled water Press Zero Wrong calibration used to zero instrument Use deionized or distilled water Press Zero Temperature exceeds ATC low limit 10 C during calibration Temperature exceeds ATC high limit 40 C during calibration Prism surface insufficiently covered Too much external light for measurement Cover sample well with hand LED light is not detected Contact Hanna lt 5 of battery life is remaining Temperature measurement out of sampling range 0 0 to 80 070 Outside temperature compensation range 10 to 40 C Factory calibration lost Contact Hanna CALIBRATION Calibration should be performed daily before measurements are made when the battery has been replaced or between a long series of measurements 1 Press the ON OFF key then release Two instrument test screens will be displayed briefly a LCD segment followed by the percentage of remaining battery life When LCD displays dashes the instrument is ready SETUP R 8888 tau BBBB BREE c50 2 Using plastic pipettes fill the sample well with distilled or deionized water Note If the ZERO sample is subject to intense light such as sunlight or another strong source cover the sample well with your hand o2. 01525 850 855 Fax 01525 853 668 USA Tel 401 765 7500 Fax 401 765 7575 80 21 V0896NVIN For e mail contacts and a complete list of Sales and Technical offices please see www hannainst com
3. by absorbing on a soft tissue 5 Using plastic pipettes rinse prism and sample well with distilled or deionized water Wipe dry The instrument is ready for the next sample DISTILLED WATER TO CHANGE TEMPERATURE UNITS To change the temperature measurement unit from Celsius to Fahrenheit or vice versa follow this procedure 1 Press and hold the ON OFF key continuously for aproximately 8 seconds The LCD will display the all segment screen followed by a screen with the model number on the primary display and the version number on the secondary display Continue pressing the ON OFF key 8 seconds r HAGE H E d 8888 i 2 While continuing to hold the ON OFF key press the ZERO key The temperature unit will change from C to F or vice versa 804 Cor F BATTERY REPLACEMENT To replace the instrument s battery follow these steps Turn the instrument OFF by pressing the ON OFF key ON e Turn instrument upside down and remove the battery cover by turning it counterclockwise Extract the battery from its location Replace with fresh 9V battery making certain to observe polarity e Insert the back battery cover and fasten it by turning clockwise to engage WARRANTY HI 96804 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 ch
4. manual Note Save all packing material until you are sure that the instrument functions correctly defective instrument must be returned in its original packing MODEL IDENTIFICATION HI 96804 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 GENERAL DESCRIPTION The HI 96804 Digital Invert Sugar Refractometer is a rugged portable water resistant device that benefits from Hanna s years of experience as a manufacturer of analytical instruments The HI 96804 is an optical instrument that employs the measurement of refractive index to determine the 96 Invert Sugar in aqueous solutions The method is both simple and quick Samples are measured after a simple user calibration with deionized or distilled water Within seconds the instrument measures the refractive index of the sample and converts it to by weight concentration units The HI 96804 digital refractometer eliminates the uncertainity associated with mechanical refractometers and is easily portable for measurements in the field The measurement technique and temperature compensation employ methodology recommended in the ICUMSA Methods Book Internationally recognized body for Sugar Analysis Temperature in C or F is displayed simultaneously with the measurement on the large dual level display along with icons for Low Power and other helpful messag
5. Instruction Manual HI 96804 Refractometer for Invert Sugar Measurements FINN instruments w hannainst com WwW 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 cOhannainst com This instrument is in compliance with C directives TABLE OF CONTENTS PRELIMINARY EXAMINATION scettr nito 2 GENERAL DESCRIPTION satio ri teil e aet etae ta 3 EE ni vicc sores ere 3 PRINCIPLE OF OPERATION Luanda dinne 4 FUNCTIONAL DESCRIPTION cadentia reinen eine uertit cene 5 DISPLAY ELEMENTS ceci orta qnia Rn esi Quat tiu Rice 6 WARNING S caesa dix aA oa Seti Rc ON EE esL A 6 ERROR MESSAGES EE anra RO ER CARLA 7 CALIBRATION PROCEDURE RE an tus ince 8 MEASUREMENT PROCEDURE cuanta iddena tire piu nt Edge PRA 9 CHANGING TEMPERATURE UNITS etait cicearetc zin Rl abere duin 10 BATTERY REPLACEMENT spicccssteoisstessscaiincsntiisnsaninnniianiinnienisnisnnniainnie 11 WARRANTY e 1 PRELIMINARY EXAMINATION Remove the instrument from the packing materials and examine carefully to ensure no damage has occurred during shipping If any damage has occurred notify your Dealer or closest Hanna Customer Service Center Each HI 96804 instrument is supplied with 9 V battery Instruction
6. Temperature Compensation blinks when temperature exceeds 10 40 C 50 104 F range Primary Display displays measurement and error messages Temperature Units Secondary Display displays temperature measurements when blinking temperature has exceeded operation range 0 80 C 32 176 F MEASUREMENT GUIDELINES e Handle instrument carefully Do not drop e o not immerse instrument under water e Do not spray water to any part of instrument except the sample well located over the prism e The instrument is intended to measure Invert Sugar solutions Do not expose instrument or prism to solvents that will damage it This includes most organic solvents and extremely hot or cold solutions e Particulate matter in a sample may scratch the prism Absorb sample on soft tissue and rinse sample well with deionized or distilled water between samples Use plastic pipettes to transfer all solutions Do not use metallic tools such as needles spoons or tweezers as these will scratch the prism ERROR MESSAGES Error Code LO Top display HI Top display LO Top display Cal segment 0 HI Top display Cal segment 0 t LO Top displa Cal segment 0 t HI Top display Cal segment 0 Battery segment blinking Temperature values are blinking 0 0 or 80 0 C ATC segment blinking SETUP segment blinking Description General failure Cyde power to instrument If instrument still has error contact Hanna
7. arge Damage due to accident misuse tampering or lack of prescribed maintenance is 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 SALES AND TECHNICAL SERVICE CONTACTS Australia Tel 03 9769 0666 Fax 03 9769 0699 China Tel 10 88570068 Fax 10 88570060 Egypt Tel amp Fax 02 2758 683 Germany Tel 07851 9129 0 Fax 07851 9129 99 Greece Tel 210 823 5192 Fax 210 884 0210 Indonesia Tel 210 4584 2941 Fax 210 4584 2942 Japan Tel 03 3258 9565 Fax 03 3258 9567 Korea Tel 02 2278 5147 Fax 02 2264 1729 Malaysia Tel 603 5638 9940 Fax 603 5638 9829 Singapore Tel 6296 7118 Fax 6291 6906 South Africa Tel 011 615 6076 Fax 011 615 8582 Taiwan Tel 886 2 2739 3014 Fax 886 2 2739 2983 Thailand Tel 66 2619 0708 Fax 66 2619 0061 United Kingdom Tel
8. e codes Key features include e Dual level LCD Automatic Temperature Compensation ATC Easy setup and storage Battery operation with Low Power indicator BEPS e Automatically turns off after 3 minutes of non use SPECIFICATIONS Range 0 to 85 0 to 80 C 32 to 176 F Resolution 0 1 0 1 C 0 1 F Accuracy 0 2 03 C 0 5 F Temperature Compensation Automatic between 10 and 40 C 50 104 F Measurement Time Approximately 1 5 seconds Minimum Sample Volume 100uL cover prism totally Light Source Yellow LED Sample Cell SS ring and flint glass prism Case Material ABS Enclosure Rating IP 65 Battery Type Life 1 X 9V 5000 readings Auto Off After 3 minutes of non use Dimensions 19 2 W x 10 2 D x 6 7 Hem Mass 420g 3 PRINCIPLE OF OPERATION The Invert Sugar determination is made by measuring the refractive index of a solution Refractive Index is an optical characteristic of a substance and the number of dissolved particles in it Refractive Index is defined as the ratio of the speed of light in empty space to the speed of light in the substance A result of this property is that light will bend or change direction when it travels through a substance of different refractive index This is called refraction When passing from a material with a higher to lower refractive index there is a critical angle at which an incoming beam of light can no longer refract but wil
9. l instead be reflected off the interface The critical angle can be used to easily calculate the refractive index according to the equation sin 0 E n n Where n is the refractive index of the lower density medium n is the refractive index of the higher density medium Refraction Critical Angle Total Internal Reflection 6 O riica 6 Orca 6 gt B critical 0 angle of incidence N4 Ny refractive index 0 angle of refraction In the HI 96804 light from an LED passes through a prism in contact with the sample An image sensor determines the critical angle at which the light is no longer refracted through the sample The HI 96804 automatically applies temperature compensation to the measurement and converts the refractive index of the sample to Invert Sugar concentration in units of percent by weight Sample Well Linear Image Sensor FUNCTIONAL DESCRIPTION TOP VIEW HI 96804 Invert Sugar Refractometer 1 Liquid Crystal Display LCD 2 Read Key User Measurement 3 Zero Key User Calibration 4 On Off 5 Primary Display 6 Secondary Display 7 Stainless Steel Sample Well and Prism BOTTOM 8 Battery Cover 9 Battery Compartment DISPLAY ELEMENTS Un amp OD N Th i omang LI LI LILI BEBE SETUP Factory Calibration Tag Measurement in Progress Tag Battery blinks when low battery condition detected Calibration Tag Automatic
10. r other shade during the calibration Z DISTILLED WATER de ee 3 Press the ZERO key If no error messages appear your unit is calibrated For a description of ERROR MESSAGES see page 7 Note The 0 0 screen will remain until a sample is measured or the power is turned off ATC X n m ATC LI LI eau esd 4 Gently absorb the ZERO water standard with a soft tissue Use care not to scratch the prism surface Wipe off the surface completely The instrument is ready for sample measurement Note If instrument is turned off the calibration will not be lost e MEASUREMENT Verify the instrument has been calibrated before taking measurements 1 Wipe off prism surface located at the bottom of the sample well Ow E 2 Using plastic pipettes drip sample onto the prism surface Fill the well completely Note If the temperature of the sample differs significantly from the temperature of the instrument wait approximately 1 minute to allow thermal equilibration 7 FR FP 3 Press the READ key Measurement is displayed in units of by weight w w Note The last measurement value will be displayed until the next sample is measured or the instrument is turned off Temperature will be continuously updated Note The ATC tag blinks and automatic temperature compensation is disabled if the temperature exceeds the 10 40 C 50 1049F range 4 Remove sample from the sample well
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