Milwaukee Instruments MA871 User Manual

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INSTRUCTION MANUAL

Milwaukee RefractometerMilwaukee Refractometer

Milwaukee Refractometer

Milwaukee RefractometerMilwaukee Refractometer

MA871

Refractometer for SucroseRefractometer for Sucrose

Refractometer for Sucrose

Refractometer for SucroseRefractometer for Sucrose
MeasurementsMeasurements

Measurements

MeasurementsMeasurements

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Instruction Manual MA871 Refractometer for Sucrose Measurements

TABLE OF CONTENTS

FUNCTIONAL DESCRIPTION ............................................................................. 3

GENERAL DESCRIPTION .................................................................................... 5

SPECIFICATIONS .............................................................................................. 6

PRINCIPLE OF OPERATION................................................................................ 7

MEASUREMENT GUIDELINES .............................................................................. 8

CALIBRATION PROCEDURE ............................................................................... 9

MEASUREMENT PROCEDURE ........................................................................... 10

MAKING A STANDARD % BRIX SOLUTION ........................................................ 11

CHANGING TEMPERATURE UNIT ..................................................................... 12

ERROR MESSAGES ........................................................................................... 13

BATTERY REPLACEMENT................................................................................... 14

WARRANTY ..................................................................................................... 15

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FUNCTIONAL DESCRIPTION

DISPLAYDISPLAY

DISPLAY

DISPLAYDISPLAY

A. BATTERY STATUS ICON (BLINKS WHEN LOW BATTERY CONDITION DETECTED)
B. MEASUREMENT IN PROGRESS TAG
C. SETUP: FACTORY CALIBRATION TAG
D. CAL: CALIBRATION TAG
E. PRIMARY DISPLAY (DISPLAYS MEASUREMENT AND ERROR MESSAGES)
F. AUTOMATIC TEMPERATURE COMPENSATION

(BLINKS WHEN TEMPERATURE EXCEEDS 10-40 °C / 50-104 °F RANGE)
G. TEMPERATURE UNITS
H. SECONDARY DISPLAY (DISPLAYS TEMPERATURE MEASUREMENTS; WHEN BLINKING,

TEMPERATURE HAS EXCEEDED OPERATION RANGE: 0-80 °C / 32-176 °F)

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Instruction Manual MA871 Refractometer for Sucrose Measurements

FRONT PANELFRONT PANEL

FRONT PANEL

FRONT PANELFRONT PANEL

A. LIQUID CRYSTAL DISPLAY (LCD)
B. READ KEY (USER MEASUREMENT)
C. ZERO KEY (USER CALIBRATION)
D. ON/OFF
E. PRIMARY DISPLAY
F. SECONDARY DISPLAY
G. STAINLESS STEEL SAMPLE WELL AND PRISM

BOTTOMBOTTOM

BOTTOM

BOTTOMBOTTOM

H. BATTERY COVER
I. BATTERY COMPARTMENT

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GENERAL DESCRIPTION

SIGNIFICANCE OF USE

Thank you for choosing Milwaukee. This instruction manual will provide you the necessary
information for correct use of the meter.

The MA871 is an optical instrument that employs the measurement of refractive index to
determine the % Brix of 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 % Brix concentration units. The MA871 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 message codes.

Key features include:

• Dual-level LCD

• Automatic Temperature Compensation (ATC)

• Easy setup and storage

• Battery operation with Low Power indicator (BEPS)

• Automatically turns off after 3 minutes of non-use.

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.

Each MA871 instrument is supplied with:

• 9 V battery

• Instruction manual

Note: Save all packing material until you are sure that the instrument

functions correctly. A defective instrument must be returned in its
original packing.

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