21
AfiMilk MPC
Installation Manual
7.3.3
Milk test for calibration (two sessions) and references by water test
This test is performed by collecting the milk each cow gives into a bucket, measuring it and
comparing it to the reading of the milk meter. Then, statistical deviation calculations are
done to indicate the accuracy level of the device.
It is very important to carry out a proper scaling procedure to ensure accurate scaling in
accordance with regulations.
To carry out the scaling procedure, an electronic weigh scale and a few milk buckets are
required. This chapter describes the correct procedure of scaling and statistical calculations.
If deviations in measurements are found, correct those by adjusting G and H values as
described below.
Before performing the test, the following parlor tests and checks should be carried
out:
o
Clean milk meters properly. Verify functionality and operation of each unit.
o
Replace consumable rubber parts (upper and lower gaskets, diaphragm and valve
gaskets) as recommended, and flawless and clean.
o
Drain the clean air line of water; milk meter solenoid air inlet is properly connected
to the clean air line and to the vacuum supply.
o
Test the vacuum level and stability. Ensure vacuum level above 30 kPa.
7.3.3.1
Collecting the Milk into a Milk Bucket
Per international regulations the following rules are adopted for scaling:
o
Multiple attachments measurements are
not
included in the statistics.
o
Only milking claw air admission is allowed. Tests may not be valid if liners cracks or
piping holes allow additional air intake by the system. Furthermore, tests where
liner slippage or large udder causing squawks (liner slip) occurs are also rejected.
o
The Milk Meter reading should be taken after the last dump of milk (milk dump after
removal).
o
For each reading, list milk meter reading vs. actual milk weighed.
o
At least
three
valid readings are required for calculating milk meter accuracy.
To ensure proper measurements, see that the following restrictions are kept:
o
The collecting bucket must be placed below the meter outlet port.
Summary of Contents for Afimilk MPC version 4
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