Operating Conditions; Operational Messages - AgraTronix AG-MAC PLUS Mode D'emploi

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
can pick up moisture when it warms or cools.
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 and average the results (See page
8 for Average Moisture Measurement Functions). Empty and refi ll the tester
with new grain from the sample for test. This unit will automatically average the
3 most recent test results. It is important when emptying the tester to make
sure there is no grain lodged in the cell top ring. See page 16 for Troubleshoot-
ing.
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 40˚F 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 similar temperatures.
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 airtight plastic container.

OPERATIONAL MESSAGES

Symbol
BATTERY LOW
<4.0
>28.0
!
Operation
Defi nition
Battery needs replacing
Moisture is below the lower limit for this grain
(4% is lower limit for selected grain)
Moisture is above the upper limit for this grain (in
this case 28.0% is the upper moisture limit for
the selected grain)
Error code (refer to error code section on page
20 in the manual)
2