CMM 100 :
INSTALLATION, CALIBRATION AND OPERATION
7
2.3
Correcting the Moisture Reading
The grain moisture reading should be checked periodically against a reading
from a reference moisture meter, particularly when combining oily or dirty
crops, since the sensor can produce a false reading due to extraneous
material adhering to it.
A Moisture Correction Factor (C) is needed if the harvest moisture reading is
different from that of a reference moisture meter.
A Moisture Correction Factor (C) is specific to each crop. To establish the
factor, subtract the instrument moisture reading from the reference meter
reading. The difference is the correction factor.
For example:
Instrument reading = 20%
Reference meter reading = 18.5%.
So the Correction factor = (18.5 - 20) = -1.5 (%)
If a large Correction factor is needed, first check that the fin on the moisture
sensor is clean.
2.3.1 Setting the Moisture Correction Factor
The Moisture Content reading can be corrected by adjusting the Correction
Factor C while the instrument is in the normal operating mode.
1.
To change the correction factor, first press and hold the button until
the current correction factor (
x.x
) is displayed.
2.
Then press the button or the button set the correction factor in 0.1
increments.
3.
On releasing the buttons, the instrument should then display the correct
moisture content reading.
2.4 Displaying the Grain Temperature
Press and hold the button to display the (grain) temperature.
Release the button to return to the Moisture Content display.
2.4.1 Nudging the Temperature Display
If determined that the displayed temperature is not correct, then press and
and hold the button,
then press either the button or the button to adjust the temperature
readout to the correct value.
