10
AfiMilk MPC
Installation Manual
7.3
Accuracy Adjustment
AfiMilk MPC milk meters are supplied with default adjustment calibration values. After the
initial setup (see adjustment per air intake explained above) inaccuracies of milk
measurements vs. bulk tank OR in specific milk meters can be found; therefore
G
and
H
parameters values may need further adjustment. Initial calibration (after installation) is
performed by adjusting the
G
parameter value. If additional
–
fine tune calibration
–
is
required for individual milk meters, update the
H
parameter value according to the
procedure explained here.
Local authorities may require an initial calibration and periodic accuracy checks (usually
yearly) of the milk meters, mainly for herd book approval. This can be done by three
different methods. These methods will be described here. The periodic accuracy check or
periodic routine test is usually done as a water test which will be compared to water test
reference values set during or after the initial calibration (see document
Afimilk MPC
Periodic routine test
).
o
Compaire between bulk tank vs. milk measurements with fine adjustment with a
water test (minimal required for official recording).
Based on the comparison, the
G
parameter is set equal for all meters. A water test is
fulfilled to check differences (i.e. faulty meters) and set a farm avarage as the
reference value. Based on the individual meter results (minimum of two
measurements) a
G
parameter adjustment for each meter is done. If adjustment is
needed for more then 5 points (2%), a minimum two new water tests are required
and are then used as the reference value for this meter.
o
Milk test for calibration and meter adjustment followed by a water test for future
reference values (recommanded by
Afimilk
).
Based on a milk test of at least three valid readings the
G
parameter will be adjusted.
After all milk meters are calibrated, a water test is performed for each meter. This will
be used as reference value.
o
Milk test for calibration and meter adjustment (advanced calibration with H-
parameter).
Based on a first milk test of at least three valid readings the
G
parameter will be
adjusted. A second milk test, which might include milk speed data, is used to adjust
the
H
parameter. After all milk meters are calibrated, a water test is performed for
each meter. This will be used as the reference value.
Summary of Contents for Afimilk MPC version 4
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