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 3-H.  Battery Replacement   

 

• 

When the battery is low, this symbol will be displayed: 

• 

Open the back cover to replace the 9V battery. 

• 

Reinsert the back cover, making sure it is properly seated.  
A built-in gasket protects the circuitry from spills. 

 

Note:  The battery provided with your instrument is primarily 
intended to check that the unit operates properly.  The battery 
itself is not guaranteed and should be replaced when the low 
battery symbol is displayed.   
 

3-I.  Precautions 

 

• 

Protect the LCD from exposure to strong light sources. 

• 

Avoid prolonged use or storage in extreme temperatures. 

• 

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. 

• 

Do not use in corrosive environments. 

• 

Do not submerge the unit. 

• 

This precision measuring instrument contains delicate  
optics and  electronics.  Handle with care and do not drop. 

• 

To avoid electric shock, make sure the battery compart-
ment is covered and do not disassemble the unit. 

 
3-J.  Erratic Readings 

 

If the readings are significantly above or below the expected 
results, consider the following:  
 

• 

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. 

• 

When diluting samples, be sure to use a pure solution such 
as distilled water.  

• 

Sample contains suspended solids. Filter and thoroughly 
mix the sample before testing. 

• 

Perform a calibration. 

• 

Replace the battery. 

• 

Outside light can cause erratic readings, make sure to 
close the 

COVER 

on the 

PRISM 

during measurement.   

Содержание 300033

Страница 1: ...DIGITAL REFRACTOMETER 300033 300034 300035 300036 INSTRUCTION MANUAL ...

Страница 2: ...tory accuracy The digital readout eliminates uncertainties while the water resistant design facilitates clean ups and protects the electronics from moist environments All models display sample temperature in addition to their other parameters Refractometers operate on the principle that as the concentration or density of a solution increases its refractive index changes proportionately The larger ...

Страница 3: ...Cover FACEPLATE LCD DISPLAY 1 Prism Temperature 2 ATC activated when displayed 3 High Limit Alert 4 Low Limit Alert 5 Low Battery 6 Measurement Value 7 Calibration Error 8 Scale Indicator 2 PANEL DESCRIPTION 1 2 3 4 5 6 7 8 9 10 Brix nD 6 7 8 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 ...

Страница 4: ... manual temperature correction unnecessary However to obtain precise readings the sample and the 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 off Press the READ button twice to exit 3 D Calibration Procedures Clean ...

Страница 5: ...t on press the FUNC button as needed until L L Y and the flashing L Limit icon is displayed Press the READ button and the last digit flashes Use the and the 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 the Low Range Limit Alert Press the FUNC button as needed until L L n appears Press...

Страница 6: ...etergent and water Do not use in corrosive environments Do not submerge the unit This precision measuring instrument contains delicate optics and electronics Handle with care and do not drop To avoid electric shock make sure the battery compart ment is covered and do not disassemble the unit 3 J Erratic Readings If the readings are significantly above or below the expected results consider the fol...

Страница 7: ...T 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 Models 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 2 180 x 100 x 65 mm Operating Temp 41 95 F 5 35 C Storage Temp 14 122 F 10 50 C Included Protective Case 9V Battery Dis...

Страница 8: ...lable This warranty does not cover probes batteries or damage resulting from accident misuse or abuse of the product In order to obtain warranty service simply ship the unit postage prepaid to SPER SCIENTIFIC LTD 7720 East Redfield Suite 7 Scottsdale Arizona 85260 480 948 4448 info sperscientific com www sperscientific com Please Note The defective unit must be accompanied by a description of the ...

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