COFFEE PRO MOISTURE-MAC, Руководство оператора

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Operation
OPERATING CONDITIONS
Test cell and grain MUST be free of any conden-
sation or surface moisture. Moisture on grain or
in test cell will cause high readings. Very hot or
cool grain will pick up moisture when it warms
or cools. The pressure cap of the tester can
squeeze moisture from high moisture grains,
such as corn, into the bottom of the test cell.
Because grains are irregularly shaped and may
not always pack the same way in the test cell,
minor variations in readings may occur. To
enhance accuracy, always take three (3) succes-
sive readings of the total sample being tested
and average the results. Empty and refill the
tester with new grain from the sample between
each test.
The tester is most accurate when grain and tester are between 60˚F (16˚C) and 90˚F
(32˚C). The unit will, however, operate at temperatures between 33˚F (1˚C) and 120˚F
(49˚C). For best results, grain temperature should not be below 40˚F (4˚C) or above
110˚F (43˚C). If the grain temperature is 20˚F (11˚C) more or less than the tempera-
ture of the unit, preheat the tester per instructions on page 5. Condensation on the
grain or test cell is best avoided by having the tester and grain at about the sample
temperature.
The environment to which a grain sample is exposed can appreciably change its
moisture content. Exposed to the open air, grain can gain or lose 1% to 2% indicated
moisture in only a few minutes. If a sample is to be held for even a short time before
being tested, it should be placed into a tightly closed, air-tight container, such as a
ziplock bag or jar.
OPERATIONAL MESSAGES
Symbol Definition
SYSTEM BATTERY LOW -------------------------- System battery needs replacing
MOISTURE BELOW LIMIT----------------------------------- Moisture is below limit
MOISTURE ABOVE LIMIT ----------------------------------- Moisture is above limit
ERROR (---) ---------------------------------------------------------- Electronic Failure
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