11
AfiMilk MPC
Installation Manual
7.3.1
Use of bulk tank and fine adjustment and references by water test
Bulk tank calibration is used for adjusting average accuracy of all the milk meters together.
This procedure is performed by calculating the parlor difference between the milk measured
by the milk meters and the bulk tank total. This results in an average
G
parameter at which
the bulk tank and the total of the milk recorded by the Afikim MPC meters is more or less
equal.
Before performing the test the following parlor tests and checks should be carried
out:
o
Milk meters are cleaned properly. Verify functionality and operation of each unit.
o
Consumable rubber parts (upper and lower gaskets, diaphragm and valve gaskets)
are replaced as recommended, and seem flawless and clean.
o
Clean air line is drained 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.
Below an example of using data of bulk tank and total milk yield recorded
Note
- Use the same measurement unit
-
Make sure to be accurate in adding and subtracting
-
For further expenation calculating difference and adjustment (see
Statistical Accuracy Calculation
Description
The amount collected by the milk tanker
12.480 Kg
Milk consumption locally (not loaded in tanker)
100 Kg
Thru milk meter but not in bulk tank (i.e. bucket collection)
-150 Kg
Total milk amount
12.430 Kg
The milk amount recorded by all AfiMilk MPC in the same period
12.315 Kg
Previous G parameter value (i.e. based on air blend)
50
New G parameter (50 +(12.430/12.315) x 2,5))
1)
53
1) milk meters show almost 1% less than bulk tank collection
So modify the G parameter: -1 x (-2,5)=+2,5 to 53 (rounded)
Amount
Summary of Contents for Afimilk MPC version 4
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