Sper scientific 300037 Manuale utente

PROGRAMMABLE

DIGITAL REFRACTOMETER

300037

INSTRUCTION MANUAL

CONTENTS

INTRODUCTION ................................................................... 2

PANEL DESCRIPTION.......................................................... 3

FACEPLATE & LCD DISPLAY ...............................................3

OPERATING INSTRUCTIONS

General Measurement ..........................................................4

Calibration Procedures..........................................................4

Zero Checking...................................................................... 4

PARAMETER SETTINGS

Changing Temperature Scale............................................... 5

Automatic Temperature Compensation .................................5

Scale Selection .....................................................................5

High/Low Range Limit Alert...................................................5

ERRATIC READINGS ........................................................... 6

BATTERY REPLACEMENT .....................................................7

PRECAUTIONS........................................................................7

SPECIFICATIONS ................................................................. 8

WARRANTY ........................................................................... 8

INTRODUCTION

A Refractometer operates on the principle that, as the

concentration or density of a solution increases, its refractive

index changes proportionately. The larger the concentration of

dissolved substances in the solution, the higher the reading.

This high precision instrument is designed for laboratory

accuracy. The digital readout eliminates uncertainties, while

the water resistant design facilitates clean ups and protects

the electronics from moist environments. The large display

provides clear readout for measurements and the sample

temperature in addition to their other parameters.

Features include a wide measurement range, automatic

temperature compensation (ATC), °C/°F selectable scales,

high/low range limit alerts, auto shut-o󰀨 and a low battery

indicator. This Refractometer has built-in Brix% and

nD scales.

WARNING

Do not connect or disconnect the USB cable

while the Refractometer is turned on.

PANEL DESCRIPTION

1. High/Low Range Limit Alert

2. READ and Enter

3. ZERO and ◄

4. SCALE and ▼

5. FUNC and Y/N

6. ON and OFF

FACEPLATE & LCD DISPLAY

1. Prism Temperature

2. ATC (active)

3. High Limit Alert

4. Low Limit Alert

5. Low Battery

6. Measurement Value

7. Calibration Error

8. Scale Indicator

9. Red LED

1 2 3 4 5 6 7 8 9 10

11 12

7. LCD

8. Prism plate

9. Prism

10. Cover

11. 9V DC Power Input

12. USB Data Port

3. FACEPLATE & LCD DISPLAY

1. Prism Temperature

2. ATC (active)

3. High Limit Alert

4. Low Limit Alert

5. Low Battery

6. Measurement Value

7. Calibration Error

8. Scale Indicator

9. Red LED

76.4°F ATC H-Limit L-Limit

-1.8.8.8.8%

▼

READ ZERO SCALES FUNC

ENTER ◄ ▼ Y/N

ON/OFF

1 2 3 4 5

Brix% nD (1

custom2scale3

)

Programmable

Refractometer

OPERATING INSTRUCTIONS

General Measurement

•To avoid damage, it is important to clean the PRISM

WINDOW before and after each use.

•Press the ON/OFF button to turn the Refractometer ON.

The unit will automatically shut o󰀨 after about 3 minutes

of inactivity.

•Perform the Calibration Procedure (4B)

• With the unit on, ll the PRISM WINDOW with the

sample to be measured and then close the COVER.

•Press the READ button immediately to ensure accurate

readings. Delays may cause the sample to evaporate.

Calibration Procedure

•Clean the PRISM WINDOW before and after each use.

•Fill the PRISM WINDOW with a standard solution such as

distilled or deionized water. The ideal temperature of the

solution and the unit should be 65° ~ 72°F (18° ~ 22°C).

•Close the COVER.

•Press the ON/OFF button to turn the unit ON.

•Press the ZERO button for 3 seconds.

•When the procedure is complete, CAL will be displayed.

•To check the nD value, press the ZERO button once.

•This data can be viewed at any time to show the last

calibration value.

• A ashing crosshair symbol is displayed when the

calibration solution falls outside the accepted range.

Zero Checking

•Fill the prism window with distilled water solution that is

at the same temperature as the solution to be tested.

•Close the COVER

•With the unit on, press the ZERO button. A refractive

index reading between 1.3329 ~ 1.3331 indicates that

the unit accurately reads to the calibrated zero point.

• If the unit is out of range, a ashing crosshair symbol will

be displayed, indicating that recalibration is required.

•Press any other button to exit this function.

•Perform Zero Checking if the unit has sustained a shock,

is subjected to temperature changes, or seems inaccurate.

PARAMETER SETTINGS

Changing the Temperature Scale

•With the unit on, press the FUNC button as needed until

t.P C (or F ) is displayed. Press the SCALE button to

view the temperature in Fahrenheit (or Celsius). Press

the READ button to exit.

Automatic Temperature Conversion

•This makes manual temperature correction

unnecessary, but to obtain precise readings the sample

and unit should be at similar ambient temperatures.

ATC appears on the LCD when this function is

activated. To set the ATC function, press the FUNC

button as needed until ALC.Y (or N) appears. Press the

SCALE button to toggle between on or o󰀨. Press the

READ button twice to exit.

Scale Selection

•Press the SCALE button to toggle though the scales.

The ▼ symbol indicates the active scale.

High/Low Range Limit Alert

Setting High Range Alert

•With the unit on, press the FUNC button as needed until

HL Y and the ashing H-Limit icon is displayed.

•Press the READ button and the last digit ashes.

•Use the q and the t buttons to set the high range limit.

•Press the READ button to activate the function.

•Press the FUNC button as needed to return to the

measurement screen.

Deactivating High Range Alert

•Press the FUNC button as needed until HL n appears.

•Press the READ button and the last digit ashes.

•Press the FUNC button as needed to return to the

measurement screen.

Setting Low Range Alert

•With the unit on, press the FUNC button as needed until

LL Y and the ashing L-Limit icon appear.

•Press the READ button and the last digit ashes.

•Use the q and t buttons to set the low range limit.

•Press the READ button activate the function.

•Press the FUNC button as needed to return to the

measurement screen.

Deactivating Low Range Alert

•Press the FUNC button as needed until LL n appears.

•Press the READ button and the last digit ashes.

•Press the FUNC button as needed to return to the

measurement screen.

ERRATIC READINGS

A. If the readings are signicantly above or below the

expected results, consider the following:

B. Sample contains more than one dissolved solid.

For example: if the sample contains both salt and

sugar, a Brix Refractometer will not display the true

sugar content because the salt content will skew the

Brix measurement.

C. When diluting samples, be sure to use a pure solution

such as distilled water.

D. Sample contains suspended solids. Filter and

thoroughly mix the sample before testing.

E. Perform a calibration and check the zero point.

F. Replace the battery.

G. Outside light can cause erratic readings, make sure

to close the COVER to the PRISM during measurement.

BATTERY REPLACEMENT

A. When the battery is low, the above symbol

appears on the LCD.

B. Open the back cover to replace the 9V battery.

C. Reinsert the back cover, making sure it is properly

seated. A built-in gasket protects the circuitry from spills.

PRECAUTIONS

A. Turn o󰀨 the unit before connecting the AC power adapter.

B. Protect the LCD from exposure to strong light sources.

C. Avoid prolonged use or storage in extreme temperatures.

D. Clean the prism and window surfaces before and

after use with a soft wet clean cloth or paper towel.

Other surfaces may be cleaned with a mild liquid dish

detergent and water.

E. Do not use in corrosive environments.

F. Do not submerge the unit.

G. This precision measuring instrument contains delicate

optics and electronics. Handle with care and do not drop.

H. To avoid electric shock, make sure the battery

compartment is covered and do not disassemble the unit.

SOFTWARE DOWNLOAD

With technology upgrading, some computers no longer

have a disc drive for you to install the software that

comes with your meter. You can download the software

that came with your meter directly.

Go to the www.sperdirect.com/software.htm and

nd your meter or search for you meter (300037) and

download from product page.

WARRANTY

Sper Scientic warrants this product against defects in

materials and workmanship for a period of one (1) year from

the date of purchase, and agrees to repair or replace any

defective unit without charge. If your model has since been

discontinued, an equivalent Sper Scientic product will be

substituted if available. This warranty does not cover probes,

batteries, battery leakage, or damage resulting from accident,

tampering, misuse, or abuse of the product. Opening the

meter to expose its electronics will break the waterproof seal

and void the warranty. To obtain warranty service, ship the

unit postage prepaid to:

SPER SCIENTIFIC LTD.

8281 E. Evans Rd., Suite #103

Scottsdale, AZ 85260

(480) 948-4448

The defective unit must be accompanied by a description of the

problem and your return address. Register your product online

at www.sperwarranty.com within 10 days of purchase.

Rev 1/4/2016

SPECIFICATIONS

Type Range Res. Accuracy

Brix 0 to 95.0% 0.1% ±0.2%

nD 1.3330 to 1.5318 0.0001 ±0.001

Temperature 0 to 40°C 0.1°C ±1°C

-32 to 104°F 0.1°F ±2°F

Power Supply: 9V Battery (apx. 5000 tests/battery)

DC Input (AC Power Adapter)

Weight: 18 oz (500 g)

Dimensions: 7" x 4" x 2½" (180 x 100 x 65 mm)

Operating Temp: 41 to 95°F (5 to 35°C)

Storage Temp: 14 to 122°F (-10 to 50°C)

Included: Instructions,Carrying Case, 9V Battery, AC Power

Adapter, PC Software CD, USB Cable, Distilled

Water, and Transfer-Pipette.

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