Operation
05-1
OPERATING CONDITIONS
Test cell and grain MUST be free of any condensation 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) successive 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 temperature of
the unit, preheat the tester per instructions on page 05-3. 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 re-closable 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
NOTE:
Contact Manufacturer if an ERROR message occurs.
