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3-E.  Scale Selection:  

Press the 

SCALE 

button to toggle 

though the scales.  The ▼ symbol indicates the active scale. 
 

3-F.  High/Low Range Limit Alert

:  A red light

 

will flash 

when the measurement is outside of the range limit. 

 

• 

Setting the High Range Limit Alert 

• 

With the unit on, press the 

FUNC 

button as needed until  

H.L  Y 

and the flashing H-Limit icon is displayed.   

• 

Press the 

READ 

button and the last digit flashes. 

• 

Use the ▼ and the ◄ buttons to set the high range limit. 

• 

Press the 

READ 

button activate the function. 

• 

Press the 

FUNC 

button as needed to return to the  

measurement screen. 

 

• 

Deactivating the High Range Limit Alert 

• 

Press the 

FUNC 

button as needed until 

H.L 

n

 appears. 

• 

Press the 

Read 

button to deactivate the function. 

• 

Press the 

FUNC 

button as needed to return to the  

measurement screen.  

 

• 

Setting the Low Range Limit Alert 

• 

With the unit 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 the 

Read 

button to deactivate the function. 

• 

Press the 

FUNC 

button as needed to return to the  

measurement screen.  

  

3-G.  Zero Checking:  

Perform Zero Checking if the unit has 

sustained a shock, is subjected to temperature changes, or 
seems inaccurate. 

 

• 

Fill the prism window with a standard solution.  This should 
be the same temperature as the solution to be tested. 

• 

With the unit on, press the 

ZERO 

button.  A refractive index 

between 1.3329~1.3331 indicates that the unit is accurate. 

• 

If the unit is out of range, a flashing crosshair symbol 
will be displayed, indicating that recalibration is required.  

• 

Press any button to exit this function. 

Summary of Contents for 300033

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

Page 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 ...

Page 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 ...

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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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