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6

DISPLAY ELEMENTS

MEASUREMENT GUIDELINES

Handle instrument carefully. Do not drop.

Do not immerse instrument under water.

Do not spray water to any part of instrument except the “sample well”
located over the prism.

The instrument is intended to measure Wine and Grape products. Do
not expose instrument or prism to solvents that will damage it. This
includes most organic solvents and extremely hot or cold solutions.

Particulate matter in a sample may scratch the prism. Absorb sample
with a 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.

• To reduce the effects of evaporation or absorption of water when taking

readings over a period of time, the prism and sample well can be
covered with plastic wrap.

1. Battery (blinks when low battery condition detected)

2. Primary Display (displays measurement and error messages)

3. Measurement in Progress Tag

4. SETUP: Factory Calibration Tag

5. CAL: Calibration Tag

6. Measurement Unit

7. Automatic Temperature Compensation

(blinks when temperature exceeds 10-40 °C / 50-104 °F range)

8. Temperature Units

9. Secondary Display (displays temperature measurements; when

blinking, temperature has exceeded operation range: 0-80 °C / 32-
176 °F)

Summary of Contents for HI 96811

Page 1: ...Instruction Manual HI 96811 Refractometer for Sucrose in Wine and Grape Products Measurements...

Page 2: ...DISPLAYELEMENTS 6 MEASUREMENTGUIDELINES 6 CALIBRATIONPROCEDURE 7 MEASUREMENTPROCEDURE 8 MAKINGASTANDARD BRIXSOLUTION 9 TOCHANGETEMPERATUREUNIT 9 BATTERYREPLACEMENT 10 WARRANTY 10 ERRORMESSAGES 11 PREL...

Page 3: ...ertainty associated with mechanical refractometers and are easily portable for measurements in the field Temperature in Cor F isdisplayedsimultaneouslywiththemeasurement on the large dual level displa...

Page 4: ...a higher to lower refractive index thereisacriticalangleatwhichanincomingbeamoflightcannolonger refract but will instead be reflected off the interface The critical angle can be used to easily calcul...

Page 5: ...tainless Steel Sample Well and Prism The HI 96811 converts the refractive index of the sample to sucrose concentration in units of percent by weight Brix also referred to as Brix The conversion used i...

Page 6: ...es Useplasticpipettestotransferallsolutions Donotusemetallictools such as needles spoons or tweezers as these will scratch the prism Toreducetheeffectsofevaporationorabsorptionofwaterwhentaking readin...

Page 7: ...distilled or deionized water Make sure the prism is completely covered Note If the ZERO sample is subject to intense light such as sunlight or another strong source cover the sample well with your ha...

Page 8: ...oximately 1 minute to allow thermal equilibration 3 Press the READ key The result is displayed in units of BRIX Note The last measurement value will be displayed until the next sample is measured or t...

Page 9: ...dissolved The total quantity can be scaledproportionallyforsmallercontainersbutaccuracymay besacrificed Example with 25 Brix Brix g Sucrose g Water g Total 25 25 000 75 000 100 000 TO CHANGE TEMPERATU...

Page 10: ...the instrument is off Turn instrument upside down and remove the battery cover by turning it counterclockwise Extract the battery from its location Replace with new 9V battery making certain to obser...

Page 11: ...a C N O t n e m g e s w o l C T A s d e e c x e e r u t a r e p m e T g n i r u d C 0 0 1 t i m i l n o i t a r b i l a c I H t y r a m i r p y a l p s i d l a C N O t n e m g e s h g i h C T A s d e...

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