Working with control panel
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When it is possible to determine bulk density of the custom product then correc-
tion coefficient “
2 BDC
” may be tuned for better measurement accuracy. For exam-
ple, the measured bulk density of corn passing through sensor is 0.810 kg/l. Accord-
ing to Table 1, bulk density of corn for which the moisture sensor was calibrated is
0.726 kg/l. Then the value of BDC correction can be calculated:
«BDC» = 0.726/0.810 = 0.896
Changing the value of "BDC" is carried out by analogy with the changing of the
"Offset" correction. "BDC" can be further adjusted manually to achieve better agree-
ment of sensor’s readings with laboratory result within ±1.0% error. Increase of
"BDC” value leads to increase in moisture readings and vice versa. Recommended
step when changing “BDC” value is 0.01-0.02.
Moisture correction shall be performed only when measurement channel of the
sensor is filled with grain to know which correction shall be entered -
“1 Offset” or “2
BDC”.
is more preferable because it provides the most accurate measure-
ment of moisture at the grain dryer outlet for products with temperature up to 40˚С.
When grain temperature at dryer outlet is higher and moisture contents if higher
at the inlet it’s preferable to use
, however this increases measurement er-
ror. The choice of specific measurement mode must be made according to on-site
conditions and the results of laboratory measurements.
To change the mode press button
. Than
will appear that
confirms mode changing (fig. 21).
fig 21. Changing moisture measurement mode
When A315 sensor shows non-zero moisture content value with empty meas-
urement channel or green light indicating the readiness for measurement is off, that
means the sensor requires zero calibration. To perform calibration empty the meas-
