6
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.
