Sper scientific 300033 Bedienungsanleitung

DIGITAL REFRACTOMETER

300033, 300034, 300035, 300036

INSTRUCTION MANUAL

CONTENTS

Title Page

1. Intro uction ................................................... 2

2. Panel Description .......................................... 3

3. Operating Instructions

3-A. General Measurement......................... 4

3-B. Changing the Temperature Scale ....... 4

3-C. ATC ..................................................... 4

3-D. Calibration Proce ures........................ 4

3-E. Scale Selection.................................... 5

3-F. Range Limit Alert................................. 5

3-G. Zero Checking ..................................... 5

3-H. Battery Replacement........................... 6

3-I. Precautions ......................................... 6

3-J. Erratic Rea ings.................................. 6

4. Specifications ................................................ 7

5. Warranty .......................................... Back Cover

1. INTRODUCTION

This high precision instrument line is esigne especially for

laboratory accuracy. The igital rea out eliminates

uncertainties, while the water resistant esign facilitates clean

ups an protects the electronics from moist environments. All

mo els isplay sample temperature in a ition to their other

parameters. Refractometers operate on the principle that, as

the concentration or ensity of a solution increases, its

refractive in ex changes proportionately. The larger the

concentration of issolve substances in the solution, the

higher the rea ing.

Features inclu e a wi e measurement range, automatic

temperature control (ATC), °C/°F selectable scales, high/low

range limit alerts, auto shut off, an a low battery in icator.

1. High/Low Range Limit Alert

2. READ an Enter

3. ZERO an ►

4. SCALE an ▼

5. FUNC an Y/N

6. ON an OFF

7. LCD

8. Prism plate

9. Prism

10. Cover

FACEPLATE &

LCD DISPLAY

1. Prism Temperature

2. ATC (activate

when isplaye )

3. High Limit Alert

4. Low Limit Alert

5. Low Battery

6. Measurement Value

7. Calibration Error

8. Scale In icator

2. PANEL DESCRIPTION

1 2 3 4 5 6 7 8 9 10

Brix% nD

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

3. OPERATING INSTRUCTIONS

3-A. General Measure ent

• To avoi amage, it is important to clean the PRISM

WINDOW before an after use.

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

on. The unit will automatically shut off after about 3

minutes of inactivity.

• Perform the Calibration Procedures (below).

• With the unit on, fill the PRISM WINDOW with the sample

to be measure , then close the COVER.

• Press the READ button imme iately to ensure accurate

rea ings. Delays may cause the sample to evaporate.

3-B. Changing the Te perature Scale: With the unit on,

press the FUNC button as nee e until l.P C (or F

) is

isplaye . Press the SCALE button to view the temperature

in Fahrenheit (or Celsius). Press the READ button to exit.

3-C. Auto atic Te perature Co pensation (ATC): This

feature makes manual temperature correction unnecessary.

However, to obtain precise rea ings the sample an the unit

shoul be at similar ambient temperatures. ATC appears on

the LCD when this function is activate . To set the ATC

function, press the FUNC button as nee e until ALC.Y (or n)

appears. Press the SCALE button to toggle between on or

off. Press the READ button twice to exit.

3-D. Calibration Procedures

• Clean the PRISM WINDOW before an after every use.

• Fill the PRISM WINDOW with a stan ar solution such as

istille or eionize water. The i eal temperature of the

solution an the unit shoul 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 secon s.

• When the proce ure is complete, CAL will be isplaye .

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

• This ata can be viewe at any time to show the last

calibration value.

• A flashing crosshair symbol is isplaye when the

calibration solution falls outsi e the accepte range.

3-E. Scale Selection: Press the SCALE button to toggle

though the scales. The ▼ symbol in icates the active scale.

3-F. High/Low Range Li it Alert: A re light will flash

when the measurement is outsi e of the range limit.

• Setting the High Range Li it Alert

• With the unit on, press the FUNC button as nee e until

H.L Y an the flashing H-Limit icon is isplaye .

• Press the READ button an the last igit flashes.

• Use the ▼ an the ◄ buttons to set the high range limit.

• Press the READ button activate the function.

• Press the FUNC button as nee e to return to the

measurement screen.

• Deactivating the High Range Li it Alert

• Press the FUNC button as nee e until H.L n appears.

• Press the Read button to eactivate the function.

• Press the FUNC button as nee e to return to the

measurement screen.

• Setting the Low Range Li it Alert

• With the unit on, press the FUNC button as nee e until

L.L Y an the flashing L-Limit icon is isplaye .

• Press the READ button an the last igit flashes.

• Use the ▼ an the ◄ buttons to set the low range limit.

• Press the READ button activate the function.

• Press the FUNC button as nee e to return to the

measurement screen.

• Deactivating the Low Range Li it Alert

• Press the FUNC button as nee e until L.L n appears.

• Press the Read button to eactivate the function.

• Press the FUNC button as nee e to return to the

measurement screen.

3-G. Zero Checking: Perform Zero Checking if the unit has

sustaine a shock, is subjecte to temperature changes, or

seems inaccurate.

• Fill the prism win ow with a stan ar solution. This shoul

be the same temperature as the solution to be teste .

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

between 1.3329~1.3331 in icates that the unit is accurate.

• If the unit is out of range, a flashing crosshair symbol

will be isplaye , in icating that recalibration is require .

• Press any button to exit this function.

3-H. Battery Replace ent

• When the battery is low, this symbol will be isplaye :

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

• Reinsert the back cover, making sure it is properly seate .

A built-in gasket protects the circuitry from spills.

Note: The battery provi e with your instrument is primarily

inten e to check that the unit operates properly. The battery

itself is not guarantee an shoul be replace when the low

battery symbol is isplaye .

3-I. Precautions

• Protect the LCD from exposure to strong light sources.

• Avoi prolonge use or storage in extreme temperatures.

• Clean the prism an win ow surfaces before an after use

with a soft wet clean cloth or paper towel. Other surfaces

may be cleane with a mil liqui ish etergent an water.

• Do not use in corrosive environments.

• Do not submerge the unit.

• This precision measuring instrument contains elicate

optics an electronics. Han le with care an o not rop.

• To avoi electric shock, make sure the battery compart-

ment is covere an o not isassemble the unit.

3-J. Erratic Readings

If the rea ings are significantly above or below the expecte

results, consi er the following:

• Sample contains more than one issolve soli . For

example, if the sample contains both salt an sugar, a Brix

refractometer will not isplay the true sugar content

because the salt content will skew the brix measurement.

• When iluting samples, be sure to use a pure solution such

as istille water.

• Sample contains suspen e soli s. Filter an thoroughly

mix the sample before testing.

• Perform a calibration.

• Replace the battery.

• Outsi e light can cause erratic rea ings, make sure to

close the COVER on the PRISM uring measurement.

4. SPECIFICATIONS

Models Type Range Res. Accuracy

300033

Brix 45.0~95.0% 0.1% ±0.2%

nD 1.4098~1.5318 0.0001 ±0.001

300034

Brix 0.0~95.0% 0.1% ±0.2%

nD 1.330~1.5318 0.0001 ±0.001

300035

Brix 0.0~60.0% 0.1% ±0.2%

Salinity 0.0~28.0% 0.1% ±0.1%

Salinity

PPT 0~280 1 ±1

300036

USG 1.000~1.090 0.001 ±0.002

Serum

Protein 0.0~12.0 0.1 ±0.1

nD 1.330~1.4098 0.0001 ±0.001

Temperature

(All Mo els)

0~40°C 0.1°C ±1°C

-32~104°F 0.1°F ±2°F

nD 1.3330~1.4419 0.0001 ±0.001

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

Weight: 18 oz (500 g)

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

Operating Temp: 41°~95°F (5°~35°C)

Storage Temp: 14°~122°F (-10°~50°C)

Inclu e : Protective Case, 9V Battery, Distille

Water, an a Transfer-Pipette

1 YEAR METER WARRANTY

Sper Scientific warrants this pro uct against efects in

materials an workmanship for a perio of one (1) year from

the ate of purchase, an agrees to repair or replace any

efective unit without charge. If your mo el has since been

iscontinue , an equivalent Sper Scientific pro uct will be

substitute if available. This warranty oes not cover probes,

batteries, or amage resulting from acci ent, misuse, or

abuse of the pro uct. In or er to obtain warranty service,

simply ship the unit postage prepai to:

SPER SCIENTIFIC LTD.

7720 East Re fiel , Suite 7

Scotts ale, Arizona 85260

(480) 948-4448

info@sperscientific.com

www.sperscientific.com

Please Note: The efective unit must be accompanie by a

escription of the problem an your return a ress. Please

be sure to return your warranty registration car within ten

(10) ays of purchase.

Rev. 3/10/2011

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