Periodic checking of meters - Year 2014

ICAR International Agreement
of Recording Practices
1. PERIODIC CHECKING OF APPROVED METERS.
HINTS FOR THE SAMPLE TAKER AND FARMER
2. PERIODIC CHECKING OF JARS
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January 2013
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1
TABLE OF CONTENT
PERIODIC CHECKING OF APPROVED AND PROVISIONALLY APPROVED METERS
HINTS FOR THE SAMPLE TAKER AND FARMER
AFIFLO 2000 MILK METER ............................................................................................................... 3
AFIFREE MILK METER ...................................................................................................................... 7
AFIKIM MILK METERS ................................................................................................................... 10
BOU-MATIC M+ MILK METER ....................................................................................................... 14
BOUMATIC PERFECTION 3000 AND BOUMATIC
SMARTCONTROL METER (also called PerfectionMetrix 3000) ........................................................... 17
DAIRY MANAGER MILK METER ....................................................................................................... 21
DAIRYMASTER WEIGHALL MILK METER ........................................................................................... 25
JM 100 MILK METER .................................................................................................................... 27
LACTOCORDER BY WMB AG .......................................................................................................... 29
LELY MWS .................................................................................................................................... 32
LEVEL MILK METER (NEDAP) ........................................................................................................... 39
MANUFLOW 2 MILK METER ............................................................................................................ 41
MDS SACCOMATIC IDC 3 .............................................................................................................. 44
MELTEC MILK METER, also called MEMOLAC 2 ................................................................................. 46
METATRON MILK METERS ............................................................................................................. 49
MILKO-SCOPE MK II MILK METER ................................................................................................... 53
MM15 (PREVIOUSLY FLOMASTER 2000/ALPRO OR FLOMASTER PRO) ............................................... 55
MR 2000 MILK METER also called COMBINA 2000 .......................................................................... 59
MK V MILK METER......................................................................................................................... 62
PULSAMETER 2-1 ......................................................................................................................... 65
SCR FREE FLOW METERS................................................................................................................ 68
TRU-TEST MILK METERS ................................................................................................................ 74
VMS SYSTEM DELAVAL ................................................................................................................. 78
PERIODIC CHECKING OF JARS ....................................................................................................... 84
ICAR International Agreement
of Recording Practices
AFIFLO 2000 MILK METER
General
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The periodic checking will be done at least once in every 12 months.
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The testing procedure with water should be carried out with milk meters that are cleaned properly.
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Meters should be prepared to the test according to instructions in SAE Afikim's Afiflo 2000
installation Manual, p/n 904139, chapter 9, sections: "Checks before installation" and "Additional
checks".
Reference value
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The reference value is calculated difference in kg between the reading of the milk meter and weighted
amount of water which has passed the milk meter.
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The "reference value" of the "AFIFLO 2000" milk meter is the average of the two measurements
with water, found during the testing procedure with water of the installation test or a reference
value determined later.
•
When proceeding to periodic checking, the reference values are handed over for support.
Required equipment
A Fullwood sucking set:
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Sucking pipe with a rubber cap and with a sucking opening of 3.5mm, air inlet of 1mm, which
provides 7-8 LPM (liter per minute).
Locate a clip tap near the milk meter body (around 10-20 cm).
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The same sucking set should be applied in both tests (reference value and periodic checking).
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Electric weigh-beam/bascule.
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Some buckets of sufficient capacity.
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Some receivers for the collecting of testing liquid.
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Thermometer.
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Periodic checking of approved and
provisionally approved meters
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Addition of around 60 grams of salt per 20kgs of water. The conductivity of the testing liquid
should end-up with 12 at the display.
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Testing liquid
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Water with a temperature of 20º C±5º C.
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Suck a quantity of testing liquid until 12 kg is shown on the display. Stop the water when the milk
meter valve is opened.
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The principle of the test
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Fill a bucket with 20 kg of testing liquid.
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3
Periodic checking of approved and
provisionally approved meters
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The flowed - and collected quantity of water will be weighed and recorded.
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The testing liquid should provide minimal 10.5 conductivity measured during the test by using the
milk meter conductivity (button ~ or display) and written on the form. If less then 10.5 add more
salt (5-10 grams) to around 12 conductivity.
Quality of the observations/measurements
"
If the first measurement value deviates 0.1 kg from the reference value: meter is correct.
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If the first measurement value deviates more than 0.1kg from the reference value, proceed to a
second measurement.
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If duplicate measurements have an average deviation of 0.2 kg or less from the reference value:
meter is correct.
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The difference between duplicate measurements should not exceed 0.1kg.
Deviating meters
"When the measurements do not come up to the standard, the testing procedure with water should
be repeated after checking the equipment, which may include, among other things, remeasuring the
conductivity of the testing liquid, the air flow of the sucking set, tilting of the milk meter body,
straightening up, and if necessary, dismantling of the meter. If it is still impossible to come up to the
standard, the meter should be calibrated/adjusted or replaced.
Replacement or repair of meters
•
When meters are replaced or when repairs influence the measurement, the meters are to be
tested during the milking, after which the testing procedure with water should be carried out
twice.
•
This water test will then serve as "reference value".
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Figure 1. The AFIFLO 2000 milk meter and the different components.
4
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ICAR International Agreement
of Recording Practices
Reporting the results
The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, tot he
main supplier and to the national milk recording organisation.
Sampling equipment
•
Check the sampling equipment for cleanness and parts
See to it that the sampling equipment is stored in a dry place, free from dust.
Hints for the sample taker and the farmer for correct sampling
Guide lines from S.A.E. Afikim.
Before sampling
See to it that:
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The meters are cleaned properly
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The air inlet of the claw is opened
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The meter and the sampling equipment are suspended upright
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All equipment for sampling contains no water residues. (Uncarefulness in this matter leads to a too
low indication of percentages, especially where the first range of cows is concerned.
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It is to be recommended to use a draining rack for good emptying of bowls and bottles;
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It is desirable, that there are some sample bottles extra on the farm during the milk recording. It is
strongly advised not to use bottles with colored glass.
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Then turn over the sample bottle several times transfuse the milk in the mixture bowl and take a
sample be means of the sample spoon;
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When removing the filled sample bottles, a well-emptied sample bottle should be put in
simultaneously;
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This waiting time (about 15 seconds) is necessary for complete discharging of the last portion;
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After taking the meter reading, the meter should be set to zero again.
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The operational panel
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One should press the "start button" twice, shortly one after the other, when the milking set is
kicked off and "automatic removal" occur, in order to retain the milk quantity that is already measured;
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After the cow is off, the sample taker must observe a waiting time before reading off the display
and before removing the sample bottles;
Periodic checking of approved and
provisionally approved meters
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Taking the sample
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The display of the meter should always be at zero before starting to milk another cow;
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5
Periodic checking of approved and
provisionally approved meters
After sampling
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The farmer removes the bottles and the sample equipment for a careful cleaning by hand;
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Store the sample equipment and bottles on a dry place, free from dust.
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ICAR International Agreement
of Recording Practices
AFIFREE MILK METER
General
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Perform the periodic check at least once every 12 months.
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Clean milk meters thoroughly before performing the periodic check.
Reference Value
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The "reference value" is the difference in Kg between the reading of the milk meter and the weighed
amount of water that has passed through the milk meter.
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The "reference value" of the "AFIFREE" milk meter is the average of the two water measurements
found during the water test procedure of the installation test or a reference value determined
later.
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During the first periodic check, save the reference values for use in future annual checks.
Required Equipment
The Afikim's sucking set:
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The Sucking Unit with a 3.5mm sucking opening, which provides 4±1 LPM water flow.
The Air Admission Unit with a 1mm air inlet, which provides 10±3 LPM air flow. The Air Admission
unit must be attached close to the Milk Meter Inlet with the air admission hole facing upward.
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A clip-tap located before the air admission unit.
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Bucket of sufficient capacity.
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The internal diameter of piping connecting the milk meter and bucket for nipples and rubber pipes
must be at least 16mm.
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Electric scales.
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Level.
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Airtight container for collecting testing liquid.
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Periodic checking of approved and
provisionally approved meters
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Before the test
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Ensure that the sucking set is clean and all its holes are open.
It is recommended to use the same sucking set for the same milk meters each year.
Ensure that all pipes, fittings, buckets and clip-tap are in the good condition.
Check that Milk Meter is leveled.
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The target is to achieve a normal solution of saltwater with a conductivity value of 10.1±0.3 (in
AfiFree conductivity units).
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To Prepare Testing Liquid
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7
Periodic checking of approved and
provisionally approved meters
1.
Initially take 20 Kg of water at approximately ambient temperature.
2.
Add about 80 g of salt and mix thoroughly.
3.
Measure liquid's conductivity value:
4.
a)
When Milk Meter is in the cleaning mode, perform "double click" on Start/Stop button. Display
will show conductivity (in AfiFree conductivity units).
b)
Without pressing on Start/Stop button, pass all the liquid through the milk meter to measure
the conductivity value.
If the required conductivity value is not achieved:
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if the measured value is less than the target value, add more salt
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if the measured value is greater than the target value, add more water
For example:
Start with 20Kg of water and add 80 grams of salt. Measure the conductivity and add water or salt
to reach a conductivity value between 9.8 and 10.4 units.
The principle of the test
Fill a bucket with at least 20 Kg of Testing Liquid.
2.
Press Start/Stop button to start measuring.
3.
Open clip-tap to suck in the Testing Liquid.
4.
Stop the water by closing of clip-tap when the display shows ~ 10.0 kg.
5.
Wait until all remaining water flows into the airtight container.
6.
Press Start/Stop button to finish measuring.
7.
Weigh and record the collected water in the airtight container and proceed as follows:
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If the first measurement value deviates by 0.1 Kg or less from the reference value: the
meter is correctly calibrated.
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If the first measurement value deviates by more than 0.1Kg from the reference value, perform
a second measurement.
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If duplicate measurements have an average deviation of 0.2 Kg or less from the reference
value: the meter is correctly calibrated.
Inaccurate Meters
If the measurements do not conform to this standard, check the equipment and repeat the water
testing procedure. Equipment checks include the following:
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Re-measure the conductivity of the testing liquid.
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Ensure that the milk meter body is level.
If it is still impossible to conform to the standard, the meter should be calibrated/ adjusted or
replaced.
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1.
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ICAR International Agreement
of Recording Practices
Replacement or Repair of Meters
After replacing the meters, or when repairs affect the measurement, test the meters during milking.
After this perform the water test procedure twice. This water test will then serve as the new
"reference value".
Reporting Results
The following results must be reported:
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Periodic checks of the milk meters.
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Interim changes to milk meters and parlor configuration.
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Checks carried out following these changes.
To those concerned, including:
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The farmer.
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The main supplier.
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The national milk recording organization.
Storage of the checking equipment
1. Inspect the checking equipment for cleanness and parts.
Store the checking equipment in a package in a dry and free from dust place.
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Periodic checking of approved and
provisionally approved meters
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9
Periodic checking of approved and
provisionally approved meters
AFIKIM MILK METERS
also called - Fullflow
- Manuflow
- Sureflow
- Afikim/Combina
Frequency of periodic checking at least once in 12 months.
General
The testing procedure with water should be carried out with milk meters that are cleaned properly.
Reference value
•
The “reference value” of the “Afikim/Fullflow” milk meter is the average of the two measuring with
water, found during the testing procedure with water of the installation test or a reference value
determined later.
•
When proceeding to periodic checking, the reference values are handed over for support.
Required equipment
•
A Fullwood sucking set:
Sucking pipe with a rubber cap and with a sucking opening of 3.5 mm.
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Electronic weigh-beam/Basle.
Some buckets of sufficient capacity.
Some receivers for the collecting of testing liquid.
Thermometer.
Testing liquid
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Water with a temperature of 20 C +/- 5 C.
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Addition of 60 grams of salt per 20 kg of water.
The principle of the test
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Fill a bucket with at least 15 kg of testing liquid.
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Suck a quantity of testing liquid till 12 kg is shown at the display.
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The flowed - and collected quantity of water will be weighed.
Quality of the observations/measurings
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If the first measuring value deviates 0.1 kg from the reference value: meter = correct.
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Air inlet of 1 mm.
10
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ICAR International Agreement
of Recording Practices
•
If the first measuring value deviates more than 0.1 kg from the reference value, proceed to a
second measuring.
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If duplicate measuring have an average deviation of 0.2 kg or less from the reference value: meter
= correct.
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The difference between duplicate measuring should not be bigger than 0.1 kg.
Deviating meters
•
When the measuring do not come up to this standard, the testing procedure with water should be
repeated after checking the equipment, which may include, among other things, straightening up,
and if necessary, dismantling of the meter.
•
If it is still impossible to come up to this standard, the meter should be recalibrated/adjusted or
replaced.
Replacement or repair of meters
•
When meters are replaced or when repairs influence the measuring, the meters are to be tested
during the milking, after which the testing procedure with water should be carried out twice.
•
This water test will then serve as “reference value”.
Reporting the results
The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, to the
main supplier and to the national milk recording organization.
Sampling equipment
•
Check the sampling equipment for cleanness and parts.
•
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Periodic checking of approved and
provisionally approved meters
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See to it that the sampling equipment is stored in a dry place, free from dust.
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11
Periodic checking of approved and
provisionally approved meters
Hints for the sample taker and the farmer for correct sampling by means of
Afikim:
Before sampling
See to it that:
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the air inlet in the milk claw is opened;
the air inlet of the meter is cleaned and opened (blockage causes a delayed operation of the valve,
extra foam formation and deviations in measuring quantities and con­tents). The air inlet of the
meter is on the cover (older types of milk meters) or in the housing of the milk meter in the top of
the bypass canal (new type);
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the meter and the sampling equip­ment are suspended upright;
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the sampling equipment is placed in such a manner, that the arrows on the sampling equipment
point in the direction of the milk flow;
•
all equipment for sampling contains no water residues. (Uncarefulness in this matter leads to a too
low indica­tion of percentages, espe­cial­ly where the first range of cows is concerned).
Taking the sample
•
the display of the meter should always be at zero before starting to milk another cow;
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ICAR International Agreement
of Recording Practices
•
after the cow is off, the sample taker must observe a waiting time before reading off the display
and before removing the sample bottles;
•
this waiting time (± 30 seconds) is necessary because of the presence of foam in the meter foam chan­ges into milk -;
•
when removing the filled sample bottles, a well-emptied sample bot­tle should be put in
simultaneously;
•
then turn over the sample bottle several times, transfuse the milk in the mixture bowl and take a
sample by means of the sample spoon;
•
it is to be recommended to use a draining rack for good emptying of bowls and bottles;
•
it is desirable, that there are some sample bottles extra on the farm during the milk recording. It is
strongly advised not to use bot­tles with colored glass.
The operation panel
•
two types of the meter are avail­able, i.e. with a standard panel or with an information panel (see
above);
•
on the standard panel, the middle switch “Continue Counting” is a switch to continue the same
count­ing and is used when a milking set is kicked off. In such a case, the measured quantity of milk
remains on the display and will be added to the measured quantity after replacement of the teat
cups;
•
at farms where milk meters with information panels are installed, one should press the “start
but­ton” twice, shortly one after the other, when the milking set is kicked off, in order to retain the
milk quantity that is already measured;
•
after taking the meter reading, the meter should be set at zero again. In case of a standard panel
the two outer switches “CR” and “Start” must be pressed simultaneously. In case of the information
panel, the “start” and “take off” keys (above the start key) should be pressed simultaneously.
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Periodic checking of approved and
provisionally approved meters
•
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After sampling
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the farmer removes the bottles and the sample equipment for a careful cleaning by hand;
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store the sample equipment and bottles on a dry place, free from dust.
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Farmer, do rinse your equipment with acids on a regular basis!
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13
Periodic checking of approved and
provisionally approved meters
BOU-MATIC M+ MILK METER
Frequency of periodic checking at least once in 12 months
General
•
The testing procedure with water should be carried out with milk meters that are cleaned properly.
•
Grease the bottom of the rotor with a thin coat of water test fat, especially meant for this purpose.
Reference value
For the Bou-Matic milk meter, a fixed standard is used 12.5 kg; +/- 0.2 kg) instead of a “reference
value”. Moreover, when proceeding to periodic checking, results of former checks are handed over
for support.
Required equipment
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A Bou-Matic sucking set:
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Tube with flow restriction with a sucking opening of 4.1 mm.
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Air inlet of 2.5 mm.
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Electronic weigh-beam/bascule.
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Some buckets of sufficient capacity.
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Some receivers for collecting testing liquid.
•
Thermometer.
Testing liquid
•
Water with a temperature of 20 C +/- 2 C.
•
The principle of the test
•
Suck at least 12 kg of testing liquid.
•
Read the display value.
•
The display value has to be 12.5 kgs +/- 0.2 kg.
Quality of the observations/measuring
•
If the fist measuring lies within the area between 12.4 and 12.6 kg: meter = correct.
•
If the first measuring gives a value of 12.3 or 12.7 kg, a second measuring should be car­ried out.
For acceptance, the values have to lie within the area between 12.3 and 12.7 kg.
•
The difference between duplicate measuring should not be bigger than 0.1 kg.
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No addition of salt or acids.
14
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ICAR International Agreement
of Recording Practices
Deviating meters
•
The deviating meters are subjected to a visual check and where possible simple faults are rectified.
After this check, two measuring per meter are carried out. If the values that are found are 12.5 kg
+/- 0.2 kg, the meters are accepted. Of course, the duplicate values may not differ more than
0.1 kg.
•
Meters, which do not come up to these fixed standards, should be corrected or replaced.
Replacement or repair of meters
When meters are replaced or when repairs influence the measuring, the meters are to be tested
during the milking, after which the testing procedure with water should be carried out twice.
Reporting the results
The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, to the
main supplier and to the national milk recording organization.
Sampling equipment
•
Check the sampling equipment for cleanness and parts.
•
See to it that the sampling equipment is stored in a dry place, free from dust.
•
Avoid direct sunlight.
Hints for the sample-taker and the farmer for correct sampling by means of Bou Matic M +
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Periodic checking of approved and
provisionally approved meters
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Before sampling
See to it that:
•
the air inlet in the milk claw or teat cups is opened;
the air inlet in the lid is opened (blockage delays the milk drainage);
•
the sample test equipment - the Orion - is installed cor­rectly;
•
the equipment for the sample test contains no water residues. (Uncar­efulness in this matter
leads to a too low indication of percentages, especially where the first range of cows is concerned).
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•
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when the cluster is kicked off by the cow, and replaced by the milkier within 30
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as soon as the cow is connected and the milk yield passes 1.5 kg, the rotor starts and the display
counts;
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Taking the sample
•
the display of the meter should always be at zero before starting to milk another cow;
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15
Periodic checking of approved and
provisionally approved meters
•
seconds, the obtained quantity of milk will be added tot the measured quantity after replacement
(press the button Manual);
•
after the cow is off, the sample taker must observe a 30 seconds’ waiting time. This time is needed
to enable the meter to drain the remaining 1.5 kg of milk.
Directions for use of the sampling equipment
a)
Place the sample tube with a turning and pushing movement in the tube holder. The sample tube has
to be hold a little slant.
b)
Keep to the following procedure for the sample taking:
1.
turn the sample cock in milking position;
2.
check during milking whether the equipment separates the milk in the sample tube, until the
cow is off and the milk meter is totally empty, so also the last 1.5 kg;
3.
when the milk meter is totally empty, turn the sample cock 180° in drain position;
4.
remove the sample tube of the equipment;
5.
turn the top on the sample tube and shake it at least 5 seconds to mix the milk;
6.
Take the sample for caliber analyzing;
7.
Place the second sample tube in the holder;
8.
turn the sample cock again 180° in milking position.
Important
Take off the drain-cock before removing the water residues. Also remove the water out of the
preformed nylon tube.
After sampling
•
the sample test equipment is cleaned during the normal cleaning procedure of the milking equip­ment.
•
Farmer, do rinse your equipment with acids on a regular basis!
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store the sample test equipment till the following sample test on a dry place, free from dust.
16
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ICAR International Agreement
of Recording Practices
BOUMATIC PERFECTION 3000 AND BOUMATIC
SMARTCONTROL METER
(also called PerfectionMetrix 3000)
Periodic Check of Milk Meters in a TouchPoint or ViewPoint Milking System
Scope
•
•
•
A Periodic Check of Milk Meters in parlor should be carried out once every 12 months.
Equipment needed to perform a Periodic Check of Milk Meters
Procedure to correctly perform a Periodic Check of Milk Meters in the parlor.
Test Equipment and Preparation
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A hanging scale is recommended. A floor scale can be inaccurate when placed on plastic or rubber
floor mats.
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Insure that all Milk Meters are repaired, clean inside, and free of all debris.
•
Insure tire Milk Meter is reassembled correctly so that all Turn Rings are tight and the
Outlet of the Milk Meter is fully turned to the stop position.
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Note
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Note
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Periodic checking of approved and
provisionally approved meters
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Tap water, 4 to 30 degrees C, no added salts or acids ............ a/r
1,2
Milk hose, 5/8 inch or 16 mm .............................................. a/r
Milk Bucket or Pail .................................................................. 1 per Milk Meter under test.
1
Test orifice (3556645) . ....................................................... 1 per Milk Meter under test.
Milk Bucket or Pail to weigh water in....................................... 1
Digital hanging scale ................................................................ 1
Scale specifications:
Accuracy: ..................................................................... 0.2% of Full Scale
Resolution: .................................................................... 0.02 Pounds/20 grams
Note:
1
Part available from BouMatic.
2
Abbreviation a/r means "as required".
3
A technician can handle up to 4 sets simultaneously (under normal conditions)
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17
Periodic checking of approved and
provisionally approved meters
Note
All controls in the TouchPoint and ViewPoint parlor must be properly addressed. A control with
address "0" is not a valid address and will not give valid production results.
Test Procedure, Water Test of Milk Meters in Parlor
Set up the milking parlor in the "Milk" mode.
2.
With the milking parlor setup in the "Milk"' mode, the water used an the water test will be metered
through the Milk Meter and then be drawn Into the Pipeline, It Is very important to insure that this
water does not go into the milk bulk tank.
3.
Using the Hanging Scale, weigh exactly 10,00 Kg of water and pour the water from the Weigh
Bucket or Pail to the Source Bucket or Pail as shown in Figure 1.
4.
Tilt the Source Bucket or Pail as shown in Figure 1.
5.
Attach one end of the Milk Hose Assembly with the Test Orifice In the center to the inlet of the Milk
Meter as shown in Figure 1.
6.
Put the other end of the Milk Hose Assembly into the Source Socket or Pail and insure the end of
the Milk Hose Assembly is at the very bottom of the tilted Source Bucket or Pall as shown in Figure
1.
7.
Place the TouchPoint or ViewPoint control in the "Attach" mode and verify the control displays
0.00 Kg at the beginning and starts to count up production as the water is metered through the
Milk Meter.
8.
Insure that ALL the water is the Source Bucket or Pail is metered through the Milk Meter and allow
the TouchPoint or ViewPoint control to "Detach" automatically.
9.
Record the production that the TouchPoint or ViewPoint control displays.
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1.
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ICAR International Agreement
of Recording Practices
Reference Values for Milk Meters and Parlor
•
In order to do a periodic check of the Milk Meters in the parlor, a Reference Value must be available
for each Milk Meter in the parlor.
•
At the start up of the parlor, Water tests should have been done and a Reference value report
should have been generated that shows the following:
•
o
The Parlor Adjustment Factor.
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The raw water test data for each Milk Meter in the parlor.
o
The Reference Value for each Milk Meter in the parlor.
o
The calculated Individual Adjustment Factor for each milk meter in the parlor
o
The calculated Reference Value if the Individual Adjustment Factor is set in the SmartDairy
Management PC application for each Milk Meter in the parlor.
If a Reference Value is not available for the Milk Meters in the parlor, then water tests to create
a Reference Value must be done and a report generated for future Period Checks of the Milk
Meters in the parlor.
Procedure for Periodic Checking of Milk Meters
1.
Using the Reference Value report verify the same Parlor Adjustment Factor is set in the SmartDairy
Management PC application.
2.
Using the Reference Value report verify the same Individual Adjustment Factor for the Milk Meters
in the parlor are set in the SmartDairy Management PC application.
4.
If the results of the first water test deviate 0.1 Kg or less from the Reference value, the Milk
Meter is considered correct
5.
if the results of the first water test deviate more than 0.1 Kg from the Reference Value a second
water test is required.
6.
If the average deviation from the first and second water tests is less that 0.2 Kg from the Reference
Value, the Milk Meter is considered correct.
7.
If the average deviation from the first and second water tests is more than 0.2 Kg from the
Reference Value, a third water test in required.
8.
Throw out the results from the first Water test. The first water test after a Milk Meter is
reassembled can be inaccurate
9.
If the .average deviation from the second and third water tests is less than 0.2 Kg from the
Reference Value, the Milk Meter is considered correct.
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For each Milk Meter perform the first Water test on all Milk Meters and record the results of the
water test.
Periodic checking of approved and
provisionally approved meters
3.
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Note: For Instructions on how to set the Parlor Adjustment Factor and the Individual Adjustment
Factor for Milk Meters in the parlor, go to the "Help" menu of the SmartDairy Management PC
application.
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19
Periodic checking of approved and
provisionally approved meters
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10. If the average deviation from the second and third water tests is more than 0.2 Kg from the
Reference Value, the Milk Meter requires service.
20
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ICAR International Agreement
of Recording Practices
DAIRY MANAGER MILK METER
Frequency of periodic checking at least once in 12 months.
General
The testing procedure with water should be carried out with milk meters that are cleaned properly.
Reference value
•
The “reference value” of the “Dairy Manager” milk meter is the average of the differences between
the display-value and the value indicated by the weigh-beam/bascule, recorded during the water
test of the installation test, or a reference value which is deter­mined subsequently.
•
When carrying out the periodic checks, the reference values are handed over for support.
Required equipment
•
A Surge sucking set:
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Tube with flow restriction with a sucking opening of 5 mm.
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Air inlet of 1 mm.
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Electronic weigh-beam/bascule.
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Some buckets of sufficient capacity.
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Some receivers for collecting the testing liquid.
•
Thermometer.
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Put the left switch in the “wash off”-position.
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Put the right switch in the “DHIA-on”-position.
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Press the button on the milk meter, so that neither milk yield nor serial number are shown at
the dis­play.
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In case of a fish-bone milking stud, close the exit fences.
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Milk meters linked with milking stud operation panels of Surge Euro Line or Nedap-Poiesz:
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The principle of the test
a
Milk meters with a meter control mode.
Periodic checking of approved and
provisionally approved meters
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Testing liquid
•
Water with a temperature of 15 C +/- 5 C.
•
No addition of salt or acids.
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21
Periodic checking of approved and
provisionally approved meters
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In case of an open tandem stud, cover the electronic eye by, for example, a cloth and wait
until the question “COW?” appears on the screen.
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Put the meters in the checking position; sequence of keys: upper left, upper right, lower left,
lower right and wait until “DHIA” appears on the milking operation panel.
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Press the button on the milk meter, so that neither milk yield nor serial number are shown at
the display.
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Fill a bucket with + 12 to 13 kg of testing liquid.
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Suck at least 9 kg of liquid through the meter, though not more than 9.9 kg at the display.
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Block the sucking tube - with closed valve - when reaching this quantity.
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Take the milk meter reading.
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Weigh the quantity of testing liquid in the receiver.
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Press the button on the milk meter and let the remaining testing liquid flow away (not into
the receiver!).
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At a second measuring, press the button once again, so that the milk yield is no longer shown
at the display.
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Calculate the difference between the display-value and the sucked quantity of testing liquid.
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Switch the meters into the original position.
Quality of the observations/measuring
•
If the first measuring value deviates 0.1 kg from the reference value: meter = correct.
If the first measuring value deviates more than 0.1 kg from the reference value, proceed to a
second measuring.
•
If duplicate measuring have an average deviation of less than 0.2 kg from the reference value:
meter = correct.
•
The difference between duplicate measuring should not be bigger than 0.2 kg.
Deviating meters
When the measuring do not come up to this standard, the testing procedure should be repeated
after checking and, if necessary, dismantling of the meter. If it is still impossible to come up to this
standard, the meter should be recalibrated/adjusted or replaced.
Replacement or repair of meters
•
When meters are replaced or when repairs influence the measuring, the meters are to be tested
during the milking, after which the testing procedure with water should be carried out twice.
•
This water test will then serve as “reference value”.
Reporting the results
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ICAR International Agreement
of Recording Practices
•
The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, to
the main supplier and to the national milk7.
•
When the sensor-value is changed, the new sensor-value is to be recorded on the measuring form.
Sampling equipment
•
Check the sampling equipment for cleanness and parts.
•
See to it that the sampling equipment is stored in a dry place, free from dust.
Hints for the sample-taker and the farmer for correct sam­pling by means of Dairy Manager
Preparation for sampling
•
switch the milk meter control mode in the “WASH OFF”- and “DHIA ON”- position or type this on
your key­board if the milk meters are lin­ked to a Surge Euroline computer;
see to it that the air inlet in the claw is opened;
•
make sure that all equipment is clean and that it contains no water residues. (Uncarefulness in this
matter leads to a too low indicati­on of percenta­ges, es­pecially where the first range of cows is
concerned).
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Periodic checking of approved and
provisionally approved meters
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23
Periodic checking of approved and
provisionally approved meters
Connecting the sampling equipment
•
take the vacuum tube (J) from the sample pipe (I);
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put the upper cover (M) on the sample pipe (I) en check if the upper cap fits well on the lower lid
(K); (origi­nal position of the sampling part);
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put the upper cover (M) into the support (V) and press the sample tube (Q) on the sample pipe (I);
(new position of the sampling part);
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attach the vacuum tube (J) to the vacuum tap (L). The handle of the tap should point upwards;
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after the vacuum pump has started and the installation is set under vacuum, the sample bottle (P)
can be pres­sed into the upper cover (M).
Taking the sample
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the display of the meter should always be at zero before starting to milk another cow;
when the cow has finished milking, press the push-button (C) for the last dump;
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wait for approximately 3 seconds until the valve (H) falls back in its original position;
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take the meter reading of the milk yield from the display (B);
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turn the handle of the vacuum tap (L) a quarter turn to the right;
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take out the sample bottle (P) and empty it in the mixture bowl. Trans­fuse the milk 3 times and
take a sample by means of the sample spoon;
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press the push-button (C) once again, so that the display (B) skips to zero;
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open the vacuum tap (L) again;
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press the sample bottle (P) again into the upper cover (M);
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take care that the upper cover (M) fits well upon the lower lid (K); (original position of the sampling
part);
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it is recommended to hold several sample bottles in reserve;
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place the used sample bottles upside down to leak.
After sampling
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replace the tube (J) on the sample pipe (I);
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clean the upper cover (M), the vacuum tap (L) and sample bottle (P) properly and store them on a
dry place, free of dust.
Farmer, do rinse your equipment with acids on a regular basis!
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ICAR International Agreement
of Recording Practices
DAIRYMASTER WEIGHALL MILK METER
General
•
The test procedure with water should be carried out with milk meters that are cleaned properly.
Test liquid
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Plain water, temperature not critical, no addition of salt or acids.
Fill a bucket with approximately 14-15 kg test liquid (water).
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Weigh the bucket with test liquid.
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Absorb a quantity of water till ± 10 kg on the display.
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For sucking up the water, a suction tube is used with a suction opening of 5mm and an air inlet of 1
mm.
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Read the display value.
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Weigh the amount of residual water in the bucket.
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Calculate the amount of test liquid which passed the meter.
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Calculate the difference between the display value and the sucked quantity of test liquid.
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Repeat the measurement and calculate the difference between the display value and the sucked
quantity of test liquid.
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The two values should be within 0.1 kg. If not, proceed to a third measurement.
•
The reference values is the average of the calculated differences.
•
The reference value for each meter is noted and will be used for the next routine tests, to compare
with.
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Periodic checking of approved and
provisionally approved meters
•
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Reference values and principle of the test method
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The reference value is settled at the installation test with milk.
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Routine test
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Fill a bucket with approximately 14-15 kg test liquid (water).
Weigh the bucket with test liquid.
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Absorb a quantity of water till ± 10 kg on the display by using the suction tube.
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Read the display value.
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Weigh the amount of residual water in the bucket.
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Calculate the amount of test liquid which passed the meter.
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Calculate the difference between the display value and the sucked quantity of test liquid.
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If the difference is less than 0.1 kg from the reference value: the meter is correct.
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25
Periodic checking of approved and
provisionally approved meters
•
If the first measuring value deviates mores than 0.1 kg from the reference value, proceed to a
second measurement.
•
If the duplicate measurements have an average deviation of 0.2 kg or less from the reference
value: the meter is correct.
•
If the duplicate measurement have an average deviation of more than 0.2 kg: the meter is not
correct. Meter should be repaired, recalibrated with milk followed by adjustment of the calibration
factor.
Visual check
•
During the routine check, the meters should also be checked on cleanliness, fixation of the meter,
correct operation of valves, leakage and so on.
•
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Also check the sample flasks.
26
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ICAR International Agreement
of Recording Practices
JM 100 MILK METER
Frequency of periodic checking at least once in 12 months.
General
•
In practice, the JM milk meter is used in three different situations.
•
a.
JM 100, Super Servo; the basic equipment. The JM 100 is linked with the control panel for
milking, sampling and cleaning functions. The JM 100, Super Servo has no digital reading-off.
b.
JM 100, Alfa display: digital reading-off. The control panel for the various functions is linked
with a display panel for digital reproduction of the measured milk quantity.
c.
JM 100, Alfa Display system. The digital reading-off is connected with a computer system.
In all situations where a JM 100 milk meter is installed, there has to be an airinlet of 0.85 mm for
obtaining the right contents.
Periodic checking of a “JM 100, Super Servo”
Periodic checking is the same as used for jars.
Periodic checking
b. JM 100, Alfa Display
c. JM 100, Alfa Display System
Reference value
Instead of a “reference value”, a fixed standard (9.7 - 10.1 kg) is used for all JM 100 milk meters.
Moreover, when proceeding to periodic checking, results of former checks are handed over for support.
Required equipment
•
No specific sucking set.
A milk tube is used for sucking the water.
•
The outlet tube from the meter to the receiver must be provided with a tube clip, with which the
outlet can be slowed down.
•
Electronic weigh-beam/bascule.
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Some receivers for collecting testing liquid.
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Some buckets of sufficient capacity.
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Thermometer.
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Periodic checking of approved and
provisionally approved meters
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Testing liquid
•
Water with a temperature of 20 C +/- 5 C.
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27
Periodic checking of approved and
provisionally approved meters
•
No addition of salt or acids.
The principle of the test
•
Fill the jar with ± 15 kg of testing liquid.
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Empty the jar by means of the JM 100 pump till 10 kg is shown on the display and collect this
quantity of testing liquid in the receiver.
•
This quantity of testing liquid is weighed and should be between 9.7 and 10.1 kg.
Quality of the observations/measuring
•
If the first measured value lies within the area between 9.8 and 10.0 kg: meter = correct. If the
first measuring has a value of 9.7 or 10.1 kg, a second measuring should be carried out.
•
If both measuring give values within the area between 9.7 and 10.1 kg: meter = correct.
•
The difference between duplicate measuring should not be bigger than 0.2 kg.
Deviating meters
Meters that do not come up to the standard of 9.7 - 10.1 kg should be tested with water after
checking and, if necessary, dismantling of the meter. If it is still impossible to come up to this
standard, then the meter should be replaced.
Replacement or repair of meters
New meters have to be tested during milking, after which the water test should be carried out
twice.
Sampling equipment
Check the sampling equipment for cleanness and parts.
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Reporting the results
The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, to the
main supplier and to the national milk recording organization.
28
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ICAR International Agreement
of Recording Practices
LACTOCORDER BY WMB AG
A.1.1 General information
CAUTION The routine inspection with water must be carried out on perfectly clean devices.
CAUTION In order to avoid remains of dried test fluid, the devices must be cleaned after the test by
means of a normal alkaline CIP-cleaning (Cleaning in Place).
Reference value
The LactoCorder milk yield measuring device's reference value is established by dividing the value
read from the display by a correction factor. This correction factor takes account of the difference
between the specific weight, the viscosity of the milk as well as its foaming characteristics and the
test fluid. In all firmware versions until 063xxxx measured with Florin S Plus this correction factor
is 1.000 which means that no correction is necessary. From version 06403xx, which has integrated
the measurement of goats, the correction factor is 1.014. However, by measuring with Neoagrar
Top S the correction factor is for all firmware versions 1.000. The results of earlier inspections are
available for use during periodic inspections.
Required equipment
Vacuum pump with negative pressure of 40 to 50 kPa
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Hoses with a 14-16mm internal diameter
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Flow reducer (Flow ca 5.5 kg/min), art.2506 (supplier: WMB AG)
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Intermediate piece with air inlet, art. 2505 (supplier: WMB AG)
•
Calibrated electronic scales
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A bucket with a volume of at least 15 litres
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A milking pail for receiving the test fluid
•
Thermometer
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Periodic checking of approved and
provisionally approved meters
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Test fluid
•
Addition of
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Water with a temperature of 20 °C +/- 5 °C
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Florin S Plus
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- 2% (volume-%) Florin S Plus, art.2685 (supplier: WMB AG)
•
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- 0.1% ANTIFOAM Y30 EMULSION, art.1290 (supplier: WMB AG)
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Mix test fluid well. The test fluid may be used for 50 measurements and one day only.
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29
Periodic checking of approved and
provisionally approved meters
Neoagrar Top S
Water with a temperature of 20 °C +/- 5 °C
•
Addition of 0.3% (volume-%) Neoagrar Top S, art.15566 (supplier: WMB AG)
•
Mix test fluid well. The test fluid may be used for 50 measurements and one day only.
Test procedure
1.
Have the bucket with approximately 15 litres of test fluid ready and calculate its exact weight
2.
Switch on the LactoCorder using the
3.
From version 06403 for species select "cows"
key
- In the main menu <5> continue
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- Service <6>
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- Adjustments I <2>
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- Continue <E>
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- Species <6> (select cows <1>)
30
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ICAR International Agreement
of Recording Practices
4.
Shift further in the main menu with key <5>
5.
Select the menu " Measuring without OD" using key <7>
6.
Confirm correct position (i.e. "Milking") of the two rinse levers using the key requested by the
device <x> (random number)
7.
Enter herd number (any number, e.g. <1>)
8.
Enter milking position (any number)
9.
Select menu "with signal lamp" using key <1>
10. Measuring with or without sampling (variant 10.1 or 10.2)
10.1 Select menu "without sampling" using key <1>
10.1.1 Insert stopper
10.1.2 Enter animal number (any number, e.g. <1>) and start measuring using key
10.2 Select menu "with sampling" using key <3>
10.2.1 Insert sample bottle
10.2.2 Select menu "No sample ID" using key <1>
10.2.3 Enter animal number (any number, e.g. <1>) and press key
10.2.4 Enter expected milk yield "20 kg" and start measuring using key
11. Suck approx. 10 kg. of test fluid out of the bucket
12. Terminate measuring by removing sucking hose from test fluid. Ensure that water flowing back
through the hose is caught in the bucket
13. When the signal lamp lights up terminate measuring by pressing
14. Divide value displayed on the device by the above-mentioned correction factor (1.000 respectively
1.014) to establish the reference value.
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17. Cleaning the devices with an alkaline detergent and properly rinsing it afterwards with clean water.
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Periodic checking of approved and
provisionally approved meters
16. Determine the difference between the reference value and the effective quantity of water drawn
through.
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15. Measure the weight of the bucket with the remaining water and subtract from the initial weight.
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Analysis of sample volume
The reference value for the sample volume must be between 33 and 38 g.
•
If the result of measurement lies within the range of the reference value, the device is cleaned with
clear water while also rinsing through the split-off valve by means of the valve test (see separate
instruction: cleaning monitoring).
•
If the result of measurement lies outside the range of the reference value the following fault could
be present:
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The sampling valve has not been cleaned properly.
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The concertina seal for ventilating air during sampling is missing.
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31
Periodic checking of approved and
provisionally approved meters
LELY MWS
Annual routine procedure Lely Milk Weighing System (MWS)
Annual test as proposed by the manufacturer.
To test the Lely Milk Weigh System (MWS) the following procedure needs to be performed:
•
If the milk jar is dirty, perform a local rinse.
Take the robot out of operation.
•
Make sure all water is drained from the MWS
•
There are 2 ways to create a reference weight
•
Go to Test>>Test menu>>milk meter (Figure 1)
Figure 1.
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ICAR International Agreement
of Recording Practices
Press Calibrate milk meter (Figure 2)
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Periodic checking of approved and
provisionally approved meters
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Figure 2.
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33
Periodic checking of approved and
provisionally approved meters
Press next (Figure 3)
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Figure 3.
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ICAR International Agreement
of Recording Practices
There are 2 options to test the MWS:
1. Fill the milk jar with 10,0 kg water of 38.5°C +// 1.5°C, by sucking (press Vacuum pump) this in
through a milk tube. During filling the counter value should increase, if it doesn’t there is a mechanical/
hardware issue.
or
2.
Use four calibrated weights of 2,5 kg to hang at the bottom of the MWS in the predetermined
holes (Figure 4)
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Periodic checking of approved and
provisionally approved meters
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Figure 4.
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35
Periodic checking of approved and
provisionally approved meters
Read out the milk jar weight. The measured weight should lie between 9,8 and 10,2kg (Figure 5).
Press finish.
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Figure 5.
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ICAR International Agreement
of Recording Practices
-
The concertina seal is damaged.
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The sampling bottle is damaged in the area of the mounting throat and is not sealing or is
otherwise leaky.
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The O-ring on the bottle holder is damaged.
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There is an air gap between the bottle holder and the sampling mount.
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A crack in the housing of the sampling mount.
If all such error sources have been excluded the "Correction sample amount" must be checked and
adjusted as necessary (factory-adjusted).
1. Shift to another menu point in the main menu by pressing the <5> key
2.
Select key <6> in the 'Service' menu
3.
Select key <2> in the 'Settings' menu
4.
Select the menu 'Correct sample size' with the <3> key, enter the difference and confirm by
pressing the <Enter> key.
5.
Select the menu 'Back' using the <Clear> key 3 times until one arrives back in the main menu and
continue the test procedure.
Please send the device to the Service Centre to be checked if the result of measurement still cannot
be brought to match the reference value even after entering a correction value.
•
A second measuring should be carried out if the difference for the first measuring is greater than
0.1 kg.
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The device is functioning correctly if the average difference between both measuring results is a
value less than 0.2 kg.
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A third and fourth measuring must be carried out if the difference is greater than 0.2 kg.
•
Measuring should be repeated if the limit value cannot be maintained. First check the device for
damage or incorrect assembly.
•
If the limit value still cannot be maintained the device should be subjected to alternating acidic/alkaline
cleaning. (The test fluid has different moistening characteristics to milk which means that
contamination of the device during the water test will probably become more marked than for milk
measuring).
•
The MPKF factors should be reloaded if necessary, as they can be slightly altered by water measuring
with dirty devices. (Measuring in milk would, however, lead to rapid automatic normalisation of
these factors).
•
If the limit values still cannot be maintained the device should be sent to the manufacturer for
inspection.
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The device is functioning correctly if the difference between the first measuring results is a value
less than 0.1 kg.
Periodic checking of approved and
provisionally approved meters
•
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Analysis of measurement results (in accordance with Dr. D. Nosal)
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Periodic checking of approved and
provisionally approved meters
38
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ICAR International Agreement
of Recording Practices
LEVEL MILK METER (NEDAP)
Frequency of periodic checking at least once in 12 months.
General
•
The testing procedure with water should be carried out with milk meters that are cleaned properly.
•
First, flush the jars with water with a temperature of ± 40 C.
Reference value
For all “Nedap Nivo” milk meters a fixed standard is used (9.8 - 10.2 kgs) instead of a “reference
value”. More­over, when proceeding to periodic checking, results of former checks are handed over
for support.
Required equipment
•
No specific sucking set.
•
For sucking up the water, a milk tube is used. Sometimes, depending on the inflowing milk in the jar,
a narrowing (restriction) is placed in the milk tube.
•
Electronic weigh-beam/bascule.
•
Some buckets of sufficient capacity.
•
Thermometer.
Testing liquid
•
Water with a temperature of 38.5 C +/- 1.5 C.
•
No addition of salt or acids.
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Periodic checking of approved and
provisionally approved meters
○
The principle of the test
•
Suck 9.7 kg of testing liquid.
Read the display value.
•
The display value has to be between 9.8 and 10.2 kg (10.0 kg +/- 0.2 kg).
The difference between duplicate mea­suring should not be bigger than 0.1 kg.
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If both measuring give values that lie in the area between 9.8 and 10.2 kg: meter = correct.
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Quality of the observations/measuring
•
If the result of the first measuring lies in the area between 9.9 and 10.1 kg: meter = correct. If
the first measuring gives a value of 9.8 or 10.2 kg, a second measuring should be carried out.
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39
Periodic checking of approved and
provisionally approved meters
Deviating meters
The deviating meters are subjected to a visual check and where possible simple faults are rectified.
After this check, two measuring per meter are carried out. If the values that are found lie between
9.8 kg and 10.2, the meters are accepted. Of course, the duplicate values may not differ more than
0.1 kg.
Replacement or repair of meters
Meters that do not come up to the stan­dard of 9.8 - 10.2 kgs should be corrected or replaced.
When meters are replaced or when repairs influence the measuring, the meters are to be tested
during the milking, after which the testing procedure with water should be carried out twice.
Reporting the results
The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, to the
main supplier and to the national milk recording organization.
Sampling equipment
•
Check the sampling equipment for cleanness and parts.
See to it that the sampling equipment is stored in a dry place, free from dust.
•
Avoid direct sunlight.
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ICAR International Agreement
of Recording Practices
MANUFLOW 2 MILK METER
Frequency of periodic checking at least once in 6 months.
General
The testing procedure with water should be carried out with milk meters that are cleaned properly.
Reference value
The reference value (“test” value) of the Manuflow 2 milk meter is the value in the Service Program
calculated by software in connection with calibration.
The “Test” value is the average amount of water in grams measured by the milk meter per each
“dump” during water test.
This value is however not used during the test. A standard deviation of +- 0.2 kg between displayvalue and measured water passed through the meter is used. When proceeding to periodic checking,
results from former checks will be handed over for support.
Required equipment
•
A Manus test set, consisting of:
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Calibrated test pipe for a flow rate of 3.5 kg/min +- 0.4 kg/min at 42 kPa
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Air bleed of 6 l/min.
Electronic scale indicating every 10 grams
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Clamp to stop the water flow
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Bucket for water, of sufficient capacity, approx. 15 liters.
•
Milk bucket including a lid with proper hose connection
•
Tube to connect milk meter to milk bucket. Should be the same as the normally used tube; 19 mm
internal diameter, max. length 650 mm.
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“Cow-cal.-key”
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“Cow-data-key” - F-key
- F-key
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Press:
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The principle of the test
Before you start the water test, please check: water flow rate is 3.5 kg/min (+- 0.4 kg/min) at
42 kPa vacuum level. The milk bucket and milk meter must be completely empty.
•
Open all gates (gate switch closed)
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Testing liquid
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Normal tap water, no specific temperature and no additional salt or acid.
Periodic checking of approved and
provisionally approved meters
○
•
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“Temp-data-key” - F-key
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the display will show “TEST00.00”
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41
Periodic checking of approved and
provisionally approved meters
•
Suck up approximately 10 liters of water
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Stop the water test when the display shows ~ 10 kg
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Measure the water which passed through the meter and compare it with the value of the display.
The values should be within +- 200 grams. Repeat the procedure two times.
When within the limit, the water test is o.k. If not, make a calibration.
Quality of the observations/measuring
•
If the first measuring value deviates +/- 0.1 kg from the reference value: meter = correct.
•
If the first measuring value deviates more than 0.1 kg from the reference value, proceed to a
second measuring.
•
If duplicate measuring have an average deviation of < +/- 0.2 kg from the reference value:
•
meter = correct.
•
Difference duplo´s < 0.1 kg.
Deviating meters
When the measuring do not come up to this standard, the meter should be recalibrated and after
that a new water test should be made. If it is still impossible to meet the standard, the meter needs
service.
Replacement or repair of meters
When meters are replaced or when repairs influence the measuring, the meters should be calibrated.
After calibration the good performance should be verified with a new water test.
Sampling equipment
•
Check the sampling equipment for cleanness and parts.
•
See to it that the sampling equipment is stored in a dry place, free from dust.
Hints for the sample taker and the farmer for correct sampling by means of Manuflow 2
Before sampling
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make sure that the air inlet in the milk claw and milk meter is opened;
•
disinfect the sample equipment in a cleaning solution;
•
remove the rubber plug from the sampler ring;
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Reporting of the results
The results of the periodic checking of the milk meters, as well as the interim changes and the
checks that go with these changes will be reported to those concerned, the farmer, the main supplier
and to the national milk recording organization.
42
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ICAR International Agreement
of Recording Practices
•
attach the sampler to the meter (see pic­ture);
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connect vacuum supply to the sample taker;
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make sure that all equipment for sampling contains no water residues.
Taking the sample
•
the display of the meter should always be at zero when the milking is started;
•
after manual or auto-take off read the display and remove the sample bottle and replace it with a
new one;
•
transfuse the sample three times by means of a mixture ­bowl and take at once the sample;
•
place the empty sample bottle upside down to drain off.
After sampling
•
remove the sample equipment and disassemble the sampler adapter and clean all pieces carefully
by hand in a cleansing- and disinfecting solution;
•
store the sampling equip­ment in a dry and dust free place;
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Periodic checking of approved and
provisionally approved meters
○
Farmer, do rinse your equipment with acids on a regular basis!
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43
Periodic checking of approved and
provisionally approved meters
MDS SACCOMATIC IDC 3
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TH
EN
EW
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CA
AS LIB
SO RAT
ON IO
N
AS P
IT ROC
IS ED
PR UR
OV E
I W
Installation and periodic calibration
44
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Periodic checking of approved and
provisionally approved meters
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ID WI
ED LL
BY BE
ID AV
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BL
E
ICAR International Agreement
of Recording Practices
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45
Periodic checking of approved and
provisionally approved meters
MELTEC MILK METER, aalso
lso called MEMOLAC 2
Frequence of periodic checking at least once in 12 months.
General
The testing procedure with water should be carried out with milk meters that are cleaned properly.
Reference value
•
The “reference value” of the “Meltec” milk meter is the average of the dif­feren­ces between
display value and weigh-beam-/bascule-value, found dur­ing the testing proce­dure with water of
the installation test or a reference value deter­mined later.
•
When proceeding to periodic checking, the reference values are handed over for support.
Required equipment
•
A sucking set:
•
Tube with a sucking pipe with rubber top and a sucking opening of 3.5 mm.
•
Air inlet of 1 mm.
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Electronic weigh-beam/bascule.
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Some buckets of sufficient capacity.
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Some receivers for the collecting of testing liquid.
Testing liquid
•
Tap water; temperature not critical
No addition of salt or acids.
The principle of the test
•
Fill a bucket with exactly 15 kg of testing liquid.
•
Suck an amount of water through the meter till 10 kg on the display.
•
Weigh the bucket with the remaining water.
•
Calculate the difference between the display-value and the sucked quantity of testing liquid.
Quality of the observations/measuring
•
If the first measuring value deviates +/- 0.1 kg from the reference value: meter = correct.
•
If the first measuring value deviates more than 0.1 kg from the reference value, proceed to a
second measuring.
•
If duplicate measuring have an average deviation of < +/- 0.2 kg from the reference value:
meter = correct.
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ICAR International Agreement
of Recording Practices
•
Difference duplo’s < 0.1 kg.
Deviating meters
When the measuring do not come up to this standard, the testing procedure should be repeated
after checking and, if necessary, dismantling of the meter. If it is still impos­sible to come up to this
standard, the meter should be recalibrated/ adjusted or replaced.
Replacement or repair of meters
•
When meters are replaced or when repairs influence the measuring, the meters are to be tested
during the milking, after which the testing procedure with water should be carried out twice.
•
This water test will then serve as “reference value”.
Reporting of the results
The results of the periodic checking of the milk meters, as well as the interim changes and the
checks that go with these changes will be reported to those concerned, among others to the farmer,
to the main supplier and to the national milk recording organization.
Sampling equipment
•
Check the sampling equipment for cleanness and parts.
•
See to it that the sampling equipment is stored in a dry place, free from dust.
Hints for the sample taker and the farmer for correct sampling by means of Meltec
Memolac 2
the sample bottle hangs free and in a vertical position;
•
the flushing tap of the sample device is downwards during milk­ing in the direction of the measuring
jug;
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the milk tube and the vacuum tube lead down to the sample cup;
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the equipment for sampling contains no water residues. (Uncarefulness in this mat­ter leads to a
too low indica­tion of per­centages, espe­cial­ly where the first range of cows is concerned.)
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that there will be at least 2 reserve bottles (for good emptying);
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the sample test devices are con­nected to the meters in the right way; fast but not too tight, and
the packing ring should be in­stalled properly;
Periodic checking of approved and
provisionally approved meters
•
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Before sampling
See to it that:
•
the air inlet in the milk claw is opened;
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47
Periodic checking of approved and
provisionally approved meters
Taking the sample
•
the display of the meter should always be at zero before starting to milk another cow;
•
see to it that the milk of the first discharge arrives in the sam­pling bowl;
•
as soon as the cow has finished milking, the valve of the measuring chamber is open, then the
display can be read off and the measuring cup can be changed;
•
transfuse the sample 3 times by means of a mixture bowl and take the sample with a sample spoon;
see to it that the sample cup is emp­tied well (to prevent contamination) before the sample cup is
placed again;
After sampling
•
remove the sampling equipment and clean all pieces carefully by hand in a cleaning- and disinfecting
solution;
•
see to it that the sampling equip­ment is stored on a dry place, free from dust and avoid direct sun
light;
•
keep the tap of the sampling equipment upwards (air supply).
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Farmer, do rinse your equipment with acids on a regular basis!
48
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ICAR International Agreement
of Recording Practices
METATRON MILK METERS
General
•
The testing procedure with water should be carried out with milk meters that are cleaned properly.
This has become even more important with the change of the test liquid from Circotop MB to
Circotop MBX, since the latter is more sensitive to residue formation on the electrodes. With
clean meters, MBX delivers very reliable data; internal measurements in the GEA Farm Technologies
production site even suggest that there is less variation than with Circotop MB.
•
If the installation has not been cleaned in daily rotation between acid and alkaline agent, a basic
cleaning by a qualified service engineer is strictly recommended.
•
Make sure that the software version for Dematron 70/75 is 7.11 or higher.
•
The water test must be carried out without a connected sample cup.
•
To accomplish the test procedure it is strongly recommended to abide by the user manual 71619000-004 (available in different languages).
a)
•
Required equipment
A GEA Farm Technologies sucking set:
Tube with flow restriction with a sucking opening of 2.8 mm.
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Air inlet of 1.2 mm.
Electronic weigh-beam/bascule.
•
Some buckets of sufficient capacity.
b)
•
Test liquid
Water; the temperature of the water should be between 10 and 25 °C.
•
Addition of 70 ml Circotop MBX per 10 kg of water.
c)
•
The principle of the test
Before the first measurement, draw approx. 3-5 kg of calibration through the meter.
•
Use the start-stop-start button.
•
When "stimopuls" appears on the display, keep pressing the start-button until normal pulsation
starts.
•
Suck 10 kg of the test liquid through the meter.
•
Read the display value.
•
The test liquid is collected in a milk reservoir for recycling.
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Periodic checking of approved and
provisionally approved meters
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49
Periodic checking of approved and
provisionally approved meters
Reference value
•
The "Reference Value" of the "Metatron" milk meter is the average of 3 or more results achieved
during the water test of the installation test (see example below).
•
When proceeding to periodic checking, reference values are handed over for support.
•
In order to determine a trusted mean value / reference value from the water test, it is of high
importance to carry out a sufficient number of measurements.
Reason:
•
Flow rate for measurements with water 3 - 3.2 kg/min
•
Sudden stop of measurement at this flow rate
•
Due to inherent characteristics Metatron/DemaTron shows a failure rate of +/- 1,5% at this flow
rate
•
At a normal end of milking, this systematic failure is as low as +/- 0,6 %
•
Random errors may add up or subtract
10.4
10.4
10.3
10.3
•
If the first measuring value deviates 0.2 kg or more from the reference value, proceed to a second
measurement.
•
If 2 consecutive measuring values differ more than 0.2 kg from each other, proceed to a third
measurement.
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Reference
value (kg)
10.10
10.30
10.42
10.42
10.44
10.42
10.63
5
In any other situation proceed as follows:
•
If the first measuring value deviates 0.1 kg from the reference value: meter = correct.
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Measurement (kg)
2
3
4
10
10.2
10.4
10.3
10.6
10.5
10.4
10.6
10.6
10.3
10.7
10.6
10.4
10.3
10.3
10.5
10.6
10.6
1
10.1
10.2
10.2
10.2
10.2
10.7
10.7
Yearly routine test
•
As written above, the new test liquid Circotop MBX is more sensitive to residue formation. If a
reference value has been determined with Circotop MB and the routine test is done with MBX for
the first time, at least 3 measurements per meter should be accomplished. If the mean value of
those 3 measurements deviates 0.2 kg or more from the reference value, or if 2 of the values
differ more than 0.2 kg from each other, a basic cleaning by a qualified service engineer has to be
done!
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Stall
1
2
3
4
5
6
7
50
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ICAR International Agreement
of Recording Practices
•
If duplicate measurements show an average deviation of 0.2 kg or less from the reference value:
meter = correct. If a meter does not come up to this standard during the periodic checking,
proceed to a third, fourth or even fifth measurement.
•
If there still is a difference of more than 0.2 kg to the reference value after 5 measurements, a
correction should be applied to the meter (see stall 8 below). After the correction it is not necessary
to start a new series of measurements.
•
Applying a correction before 5 measurements are done is not recommended by GEA Farm Technologies.
Example for the measurements by the yearly routine test:
3
4
10.3
10.4
10.2
10.6
10.6
10.5
10.5
10.3
10.3
10.3
10.6
10.5
10.6
5
10.5
10.4
10.4 10.4
10.5 10.6
Stall 8: After the correction is applied, the measurement result will be diminished by 2%, resulting
in a value of approx. 10.37 kg.
a)
•
Deviating meters
If the average of 5 measurement values deviates 5% or more from the reference value, a service
engineer has to be consulted in order to check the outlet valve or for other technical problems. If
necessary, the meter should be repaired or replaced.
b)
•
Replacement or repair of meters
When meters are replaced or when repairs influence the measuring, the meters are to be tested
during the milking, after which the testing procedure with water should be carried out (at least
three times).
•
This water test will then serve as "reference value".
c)
Reporting the results
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•
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2
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1
10.2
10.1
10.1
10.2
10.2
10.2
10.7
10.7
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Stall
1
2
3
4
5
6
7
8
Deviation
(%) from
Reference reference
value
Decision Correction
value
10.10
1.0%
OK
10.30
-1.0%
OK
10.40
-1.3%
OK
10.5
-1.9%
OK
10.52
-1.4%
OK
10.44
0.3%
OK
10.3
1.9%
OK
10.30
2.7%
Not OK
-2%
Mean
value
(kg)
10.20
10.20
10.27
10.30
10.375
10.47
10.5
10.58
Periodic checking of approved and
provisionally approved meters
Measurement (kg)
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51
Periodic checking of approved and
provisionally approved meters
The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, to
the main supplier and to the national milk recording organization.
•
When the sensor-value is changed, the new sensor-value is to be recorded on the measuring form.
d)
•
Sampling equipment
Check the sampling equipment for cleanliness and completeness of parts.
•
See to it that the sampling equipment is stored in a dry place, free from dust.
•
Avoid direct sunlight.
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52
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ICAR International Agreement
of Recording Practices
MILKO-SCOPE MK II MILK METER
Frequency of periodic checking at least once in 12 months.
General
Besides measuring accuracy, also check on cleanliness, quality of rubber parts, functio­ning of clip
mechanism (hanging crooked) and readability calibration.
Reference value
None; see below the principle of the test and quality of the observations/measuring.
Required equipment
•
A sucking set:
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Tube with a sucking opening of 8 mm.
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No air inlet.
•
Electronic weigh-beam/bascule
•
Some buckets of sufficient capacity.
Testing liquid
•
Normal tap water
•
Eventually addition of a little chlorine (in connection with infection) or
•
Regularly refreshing the test water.
The principle of the test and evaluation of the observations/measuring
•
Suck 10 kg of test liquid
Read the display value (without use of a reading ring)
•
The result of the measure tube should be 10.3 kg +/- 0.2 kg.
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Deviating meters
When the measuring do not come up to this standard, the testing procedure should
be repeated after checking and, if necessary, dismantling of the meter. If it is still impos­sible to
come up to this standard, the meter should be recalibrated/adjusted or replaced.
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Periodic checking of approved and
provisionally approved meters
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53
Periodic checking of approved and
provisionally approved meters
Replacement or repair of meters
All new meters are to be tested on measuring accuracy before deploying. This also applies for meters
from which the measuring spout is renewed during control.
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Reporting the results
The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, to the
main supplier and to the national milk recording organization.
54
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ICAR International Agreement
of Recording Practices
MM15 (PREVIOUSLY FLOMASTER 2000/ALPRO OR
FLOMASTER PRO)
Frequency of periodic checking at least once in 12 months.
General
•
The testing procedure with water should be carried out with milk meters that are cleaned properly.
•
The equipment of BJ- and BK-production series and newer versions for personal computers should
be washed first with hot water of 45 C.
Reference value
For the Flomaster 2000, no specific “reference value” is used, but there is a standard deviation of
0.2 kg between the display-value and the value indicated by the weigh-beam/bascule for each meter,
at the moment of measuring. Moreover, when proceeding to periodic checking, results of former
checks will by handed over for support.
Required equipment
•
An Alfa Laval sucking set:
Tube with a sucking pipe with a sucking opening of 5 mm.
Air inlet of 0.8 mm.
•
Electronic weigh-beam/bascule.
•
Some buckets of sufficient capacity.
•
Some receivers for the collecting of testing liquid.
•
Thermometer.
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Testing liquid
•
Normal tap water for series older than the BJ and BK-series.
•
No addition of salt or acids.
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From the BJ- and BK-series onwards, water with a temperature of ± 37 C.
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•
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Periodic checking of approved and
provisionally approved meters
-
•
Press the button F5, then press Send and wait till (C).
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Let the water before the tube clip flow back into the bucket and empty the milk tube behind the tube
clip in the meter.
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•
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Suck ± 10 kg of water through the meter and stop the supply of water by means of a tube clip on
the sucking tube.
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•
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The principle of the test
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Fill a bucket with ± 12 to 13 kg of testing liquid and determine the exact weight of it.
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55
Periodic checking of approved and
provisionally approved meters
•
Read the display and weigh the bucket with the remaining water.
•
Calculate the difference between the display-value and the sucked quantity of testing liquid.
Quality of the observations/measuring
•
If the first measuring value deviates 0.1 kg from the reference value (this is the sucked quantity of
water): meter = correct.
•
If the first measuring value deviates more than 0.1 kg from the reference value, proceed to a
second measuring.
•
If duplicate measuring have an average deviation of 0.2 kg or less from the reference value:
meter = correct.
Deviating meters
When the measuring do not come up to this standard, the testing procedure should be repeated
after checking and, if necessary, dismantling of the meter. If it is still impossible to come up to this
standard, the meter should be recalibrated/adjusted or replaced.
Replacement or repair of meters
•
When meters are replaced or when repairs influence the measuring, the meters are to be tested
during the milking, after which the testing procedure with water should be carried out twice.
•
The standard, with which the meter has to comply, is described before.
Sampling equipment
•
Check the sampling equipment for cleanness and parts.
•
See to it that the sampling equipment is stored in a dry place, free from dust.
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Reporting of the results
The results of the periodic checking of the milk meters, as well as the interim changes and the
checks that go with these changes will be reported to those concerned, among others to the farmer,
to the main supplier and to the national milk recording organization.
56
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ICAR International Agreement
of Recording Practices
Hints for the sample taker and the farmer for correct sampling by means of Flomaster
2000 / Alpro FloMaster Pro
Before sampling
•
make sure that the air inlet in the milk claw is opened;
disinfect the sample equipment in a cleansing solution;
•
take the plug of rubber out of the meter;
•
place the sample equipment in the meter;
•
push the bowl, provided with a cover, on the meter and pull the spring clamp over the joggle of the
housing;
•
open the sampling cock;
•
make sure that all equipment for sampling contains no water residu­es. (Un­carefulness in this
matter leads to a too low indica­tion of percentages, especially where the first range of cows is
concerned).
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Periodic checking of approved and
provisionally approved meters
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turn off the cock on the sample bowl cover;
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•
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as soon as the sign [ appears befo­re the quantity-indication on the display, the quantity can be
read off;
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•
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as soon as the cow has finished milking and the cluster has been taken off, check if there is a square
before the quantity-indication on the display. If so, press the F4 button for the last dump;
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Taking the sample
•
the display of the meter should always be at zero before starting to milk another cow;
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57
Periodic checking of approved and
provisionally approved meters
•
change the bowl for an empty one and turn open the cock on the cover again;
•
transfuse the sample 3 times by means of a mixture bowl;
•
directly after doing so, the sample should be taken;
•
place the bottles upside down to leak.
After sampling
•
remove the sampling equipment and clean this carefully by hand in a cleansing- and disinfecting
solu­tion (Alfa 1 or Alfablink);
•
store the sampling equipment on a dry place, free from dust.
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Farmer, do rinse your equipment with acids on a regular basis!
58
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ICAR International Agreement
of Recording Practices
MR 2000 MILK METER aalso
lso called COMBINA 2000
Frequency of periodic checking at least once in 12 months.
General
The testing procedure with water should be carried out with milk meters that are cleaned properly.
Reference value
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The “reference value” of the “MR 2000” milk meter is the average of the two measuring with
water, found during the testing procedure with water of the installation test or a reference value
that is determined later.
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When proceeding to periodic checking, reference values are handed over for support.
Required equipment
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A Gascoigne/Melotte sucking set:
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Sucking tube with a sucking opening of 4 mm.
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Air inlet of 1 mm.
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Electronic weigh-beam/bascule.
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Some buckets of sufficient capacity.
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Some receivers for the collecting of testing liquid.
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Thermometer.
Testing liquid
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Water with a temperature of 20 C +/- 5 C.
•
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The principle of the test
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Suck 10 kg of testing liquid.
Periodic checking of approved and
provisionally approved meters
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Addition of 60 grams of salt per 20 kgs of water.
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Read the display value.
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The difference between duplicate measuring should not be bigger than 0.2 kg.
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If duplicate measuring have an average deviation of 0.2 kg or less from the reference value:
meter = correct.
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If the first measuring value deviates more than 0.1 kg from the reference value, proceed to a
second measuring.
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Quality of the observations/measuring
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If the first measuring value deviates 0.1 kg from the reference value: meter = correct.
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59
Periodic checking of approved and
provisionally approved meters
Deviating meters
When the measuring do not come up to this standard, the testing procedure with water should be
repeated after checking and, if necessary, dismantling of the meter. If it is still impossible to come
up to this standard, the meter should be recalibrated/adjusted or replaced.
Replacement or repair of meters
•
When meters are replaced or when repairs influence the measuring, the meters are to be tested
during the milking, after which the testing procedure with water should be carried out twice.
•
This water test will then serve as “reference value”.
Reporting the results
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The results of the periodic checking of the milk meters, as well as interim changes and the checks
that go with these changes will be reported to those concerned, among others to the farmer, to
the main supplier and to the national milkrecording organization.
•
When the sensor-value is changed, the new sensor-value is to be recorded on the measuring form.
Sampling equipment
•
Check the sampling equipment for cleanness and parts.
•
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See to it that the sampling equipment is stored in a dry place, free from dust.
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ICAR International Agreement
of Recording Practices
Hints for the sample taker and the farmer for correct sampling by means of Gascoigne/Melotte
MR 2000 Combina 2000
Before sampling
See to it that:
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the air inlet in the milk claw is opened;
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the air inlet in the meter cover is opened (the meter does not operate correctly in case of blockage,
this will give deviating contents);
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the sampling device with bayonet joint is installed correctly while turning it to the left (correct
placement: dish is turned away from the milk outlet);
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the equipment for the sampling contains no water residues. (Uncar­efulness in this matter leads to
a too low in­dication of per­centages, especially where the first range of cows is concerned).
Taking the sample
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when taking a sample, the switch on the front side of the reset box has to be in the middle position;
the display of the meter should always be put at zero by hand, before starting to milk another cow;
•
if the cow kicks off the cluster during milking and when it is con­nected again, the meter will
continue counting after replacement. This is applicable for both automatic and manual take off,
even when the cluster is already drawn up;
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after the cow is off, one should wait for the last dump (± 30 seconds);
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if the F-sign appears on the left side of the milk yield-indication on the display box, the quantity of
milk can be read off and the sample bot­tles can be changed;
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the F-sign does not appear in cases where a control box (2 meters per box) is installed;
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the filled sample bottle will be turned over for several times, trans­fused in the mixture bowl and
then a sample will be taken by means of the sample spoon;
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it is to be recommended to use a draining rack for good emptying of bowls and bottles;
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it is desired, that there are some sample bottles extra on the farm during the milk recording.
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Periodic checking of approved and
provisionally approved meters
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After sampling
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the farmer removes the bottles and the sample equipment for a careful cleaning by hand;
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store the sample equipment and bottles on a dry place, free from dust.
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Farmer, do rinse your equipment with acids on a regular basis!
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61
Periodic checking of approved and
provisionally approved meters
MK V MILK METER
Periodic test procedure
In conjunction with the periodic milk meter inspection, all milk meters should be checked for accuracy
at least annually.
This test procedure is the same as that specified by the DHIA and approved by ICAR.
Basic test rig set up
(Refer to Figure 1)
1. The milk meter is mounted such that the meter base is level.
2.
The milk meter suction hose rests in an open 18 litre (40lb) pail (D) directly below the meter. It has
an inlet restrictor (G) to ensure a flow of 3.5 to 4.0 litres per minute at the available vacuum level.
An air admission hole (F) 600mm (24 inches) from the meter inlet admits 0.5 cfm (free air) (15 l/
min FA). This hole size is 1 mm (No.60 drill).
3.
The milk meter outlet hose falls directly to the inlet of a vacuum trap (H), (for example test bucket,
pail milker, or weigh jar). The vacuum trap outlet is connected to a stable vacuum source of nominally
50kPa (15" Hg).
4.
A vacuum tap (C) is fitted on the milk meter inlet hose and the vacuum source hose (B).
5.
Volumetric flasks or accurate scales will be required.
Basic test procedure
1. Using water as the working fluid fill the supply pail (D) with 16 litres (16 kg or 35.24lb).
Open the source vacuum tap (B). (Inlet tap C closed).
3.
Ensure the three way tap is wet, properly seated and in the horizontal (milking) position.
4.
Open the inlet hose tap (C).
5.
Draw all of the water from the supply pail (D) through tube (E) past the air admission hole (F)
through the milk meter (A) and into the vacuum trap (H).
6.
Record the milk meter flask reading. (Read the bottom of the meniscus).
7.
Turn the three-way tap to drain (upwards) and operate the flask depressor to empty the flask.
8.
When flask is empty close the source vacuum tap (B).
9.
When vacuum trap (H) has returned to atmospheric pressure
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2.
10. Return the three-way tap to `milking' position, refill the supply pail with exactly 16 litres of water
and repeat the procedure, to obtain two results per meter.
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close the inlet hose tap (C).
62
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ICAR International Agreement
of Recording Practices
To Vacuum
Source (50kPa)
Milk Meter
Under Test 'A'
600mm from
Milk Meter
Inlet
Vacuum Tap 'B'
'F' Air
Admission
Vacuum Trap 'H'
(test bucket etc.)
Flow Control
Tube 'E'
Inlet Hose
Tap 'C'
'G' Flow
Restrictor
Supply Pail 'D'
('E' fitted to lowest point)
Figure 1. Basic milk meter test rig.
Results analysis
Calculate the `p-values' for each reading as follows:
(Working in kilograms)
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Periodic checking of approved and
provisionally approved meters
If both 'p-values' are in the range 97% to 103% the milk meter is considered acceptable.
If only one of the 'p-values' is outside the range 97% to 103%, perform the test a third time. The
meter is then considered acceptable if no single 'p-value' is outside the range 95% to 105% and
the mean of all three values is within the range 97% to 103%.
Any milk meter failing this test should be withdrawn from service and submitted to a certified
service agent for repair and recalibration.
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meter reading
x 100%
16.48
p=
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Repair and recalibration procedure
This section covers repair and recalibration of the Waikato milk meter, which may be undertaken
only at a certified Repair and Recalibration Centre (e.g. DHIA in the USA).
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Note
The periodic test procedure should be regularly followed to give confidence in milk meter results.
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63
Periodic checking of approved and
provisionally approved meters
Milk meters submitted to this procedure will be those that have damaged calibration dependent
parts, or those that fail the Periodic Test Procedure.
Damaged milk meters
The parts of a milk meter that may affect calibration are the flask, cover, and base assembly.
Damaged parts should be replaced and the other main parts closely inspected as per the 'Periodic
Inspection Procedure'.
The milk meter is then re-tested under the 'Periodic Test Procedure'. The resultant meter p-values
must meet the criteria specified.
Milk meters that fail 'periodic test procedure'
With only three parts to interchange, a simple process of elimination is used to recalibrate the milk
meter.
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Replace the base assembly and retest.
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If the meter fails, replace the cover and retest.
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If the meter fails, replace the flask and retest.
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A failure at this point is unlikely, but if a single case occurs, repeat the inspection and replacement
procedure. If a large number of failures occur at this point, check test rig and testing procedure for
any points of non-compliance with these recommended procedures.
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ICAR International Agreement
of Recording Practices
PULSAMETER 2-1
Calibration instructions for milk meter "Pulsameter 2-1" with water
The device is pre-set at works. After installation at the milking position, an adjustment to the
particular milking installation has to be carried out by a fine calibration. Therefore it is essential
that you please pay attention to the following advices:
Commissioning
When the milking installation is put into operation the first time or when exchanging the Pulsameter
2-1, the calibration value '100' is set at all milking positions. Checking and fine calibration is to be
done 4 weeks after the first commissioning, as the bearing points of the tipping scale are running
stable by then. The fine calibration is carried out acc. point 2 and 3 of these instructions. At the
first calibration as well as at routine checks, always qualified personnel are to be consulted, in order
to remedy distinguishable deficiencies before the calibration.
Required equipment (Fig.1)
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A suitable milk can.
A scale with 10g -resolution.
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Standardised intake tube with concave intake nozzle (3kg/min) and air nozzle (8-10 l/min).
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A bucket of at least 10 kg capacity.
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Measuring report of the last fine calibration (only necessary at routine checks).
•
Thermometer.
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Procedure of the water test
Before the actual calibration, the previously set calibration value at is to be recorded in the measuring
report and the installation has to be thoroughly cleaned and then rinsed.
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Periodic checking of approved and
provisionally approved meters
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65
Periodic checking of approved and
provisionally approved meters
•
The bucket is to be filled with water with a temperature of ca. 30°C. and is to be put on the
platform of the cow.
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The long milk tube of the milking unit is to be taken off from the inlet connections and the standardised
intake tube of the test unit is to be attached on these connections.
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Before every measuring the tipping scale is to be emptied by operating the two air inlet plates on
the top.
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The end of the tube with intake nozzle is to be dipped down to the bottom of the bucket. The
concave end of the intake nozzle avoids that the nozzle adheres at the bottom.
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By the program "Milking", the water is to be sucked off out of the bucket. The suction nozzle must
not suck air and must not be blocked.
•
Afterwards press the button for end of milking
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Read the display
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The displayed quantity should be 10 ± 0,2 kg
Setting / correction of the calibration value
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At least 2 measurings acc. to point 3. are to be carried out.
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If the displayed values are 10.0 ± 0,2 kg, the previous calibration value remains unchanged and no
further measurement is necessary.
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If the displayed values exceed these limits, a correction is necessary.
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Afterwards, a new test for checking is carried out. If this measuring is within the range of tolerance,
the calibration is completed.
or
First measuring: Display 9.7 kg
Second Measuring: Display 9.8 kg
Increasing the calibration value of 2.0 g, followed by a further test for confirmation.
or
First measuring: Display 10.3 kg
Second Measuring: Display 10.3 kg
Result: Reducing the calibration value of minus 3.0 g, followed by a further test for confirmation.
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Examples:
First measuring: Display 9.9 kg
Second Measuring: Display 10.0 kg
Result: OK
66
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ICAR International Agreement
of Recording Practices
In case, a correction of the calibration value has to be done, it always must be referred to the
nominal size of 10,0 kg and corrected accordingly.
e.g. at
Display 9.7 kg increasing the calibration value of + 3 g
Display 10.4 kg reducing the calibration value of -4 g
Display 10.2 kg reducing the calibration value of -2 g
The new-determined calibration value is to be recorded in the measuring report.
Prevention of measurement errors
To avoid mistakes in measurements, please pay attention to the following important advices:
1. Basically, the calibration value is influenced by the housing (upper and lower part) as well as by the
tipping scale. If one or more parts or a complete device is replaced / renewed, a new fine calibration
as described in these instructions is mandatory and has to be recorded in the last measuring
report!
2.
An exchange of the in point 5.1 mentioned parts of different Pulsameter is possible, but only when
followed by a calibration the metering precision is assured.
3.
The service of all flexible and rubber parts at regular intervals has to be ensured.
4.
The bearings and the impact points of the tipping scales have to be checked for wear at least once
a year. At high-efficient milking installations the wear-check is to be done twice a year - e.g. at
milking robots and milking positions with more than 40 milking units/day.
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Periodic checking of approved and
provisionally approved meters
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If you always fulfil these minimum requirements, you possess a milk meter of high quality with an
international approval, which will always provide you with correct measurements in the long term.
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67
Periodic checking of approved and
provisionally approved meters
SCR FREE FLOW METERS
The described procedure applies for all Free Flow meters, however different probes are
used for the different Free Flow versions
SCR has proposed a procedure for a routine test consisting several elements. The purpose of this
test is to determine whether the FREE FLOW-meter unit still functions as it did in the installation
test. If one or more out of the mentioned tests fail, the meter should undergo a new farm test with
milk (installation test). Based upon the proposal received and the experiences with the FREE FLOW
milk meter in the Netherlands, together with the officials from KOM, a modified routine test for the
SCR FREE FLOW meter was developed and validated.
Specification of the above-mentioned annual test factors:
1. Optical field integrity test : Test of the FREE FLOW optical field integrity: The FREE FLOW automatically
detects abnormal reading if the optical field is damaged (mechanical / optical or electronic ). In
such a case the FREE FLOW will display a SERVICE message on it’s display.
Free Flow visual inspection: The milk unit from cluster to Free Flow meters is checked for abnormalities
with respect to leakages and so on. An extra level of test is by visual inspection of the FREE FLOW
milk channel to detect dirt , protrusions or other abnormalities.
3.
Milking parlour parameters: A general visual test of all milking components (milking machine, meter
height, milking cluster, air bleeds, broken tubes) to verify there are no big changes or leakages. A
new milking parlour, new milking clusters or other big changes, like a change in internal diameter of
the long milk tube will result in a new installation test. The installation test has to be performed
with milk as described in the installation test procedure.
4.
Check of FREE FLOW internal parameters: By using a remote control unit Psion, the FREE FLOW
internal parameters that affect the measurement are checked. If by some malfunction the
parameters have been changed, these parameters can be restored to the original values. Two
important parameters are the sub-software and the bias because they affect the measurement.
5.
Flow test using probe: The probe test simulates a milk flow. The FREE FLOW flow reading is compared
to the original reading when it was calibrated with milk. If the reading is the same then the optical
field and the optical field + milk channel mechanics, transparency and color have all stayed the
same so the FREE FLOW still measures the same. The probe test can not be used to set a new
bias to the FREE FLOW, a new bias should be set with milking cows.
Optical field integrity test
The FREE-FLOW milk meter does not have any mechanical or moving parts. The internal software in
the FREE-FLOW will alert upon detection of any change that cannot be compensated by the software.
Upon detection of such failures, the FREE-FLOW displays an error message on it’s display and the
farmer should consult the FREE-FLOW manual for the requested action to take. The testing procedure
should be carried out with meters that are cleaned properly, i.e. after a main cleaning cycle of the
milking machine.
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2.
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ICAR International Agreement
of Recording Practices
Free Flow visual inspection
The milk unit from cluster to Free Flow meter is checked for abnormalities with respect to leakages,
broken tubes, constrictions and so on. The Free Flow measuring channel is visually inspected to
detect dirt , protrusions or other abnormalities, which may effect the performance of the Free Flow
milk meter.
Milking parlour parameters
A general visual test of all milking components (milking machine, meter height, milking cluster, air
bleeds, broken tubes) should be carried out to verify that there are no big changes or leakages. A
new milking parlour, new milking clusters or other big changes, like a change in internal diameter of
the long milk tube, makes it necessary to perform a new installation test. The installation test has
to be performed with milk as described in the installation test procedure. The following parameters
have to be taken into account : Vacuum level, type op milk cluster, long milk tube diameter, length of
milk tube, length of tube between Free Flow meter and milk pipe line, height of Free Flow meter and
air inlet (cluster air inlet and leakage). These 5 values represent milking machine parameters that if
significantly changed may affect the FREE FLOW bias and therefore the results of the milk yield
measurements.
The reference values should be recorded during the installation test and compared to when doing
the routine test.
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Periodic checking of approved and
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If vacuum level changed by more than 2.5kpa since the installation test, the
routine test fails. The meters must be recalibrated with milk.
Claw type:
If another significantly different claw is installed, the routine test will fail. The
meters must be recalibrated with milk.
Milk tubes:
If the diameter of the milk tubes between milking cluster and the Free Flow milk
meter has been changed, the routine test fails. The meters should be recalibrated
with milk.
If the length of the milk tube between milking cluster and the Free Flow milk
meter has been changed by more than +/- 10%, the routine test fails.
The meters should be recalibrated with milk.
If the milk tube between Free Flow meter and milk pipe line has been changed in
diameter or in length, the routine test fails. The meters should be recalibrated
with milk.
FREE FLOW height: The height of the Free Flow meter relative to the cow platform: If this distance
has been changed by more then 7 cm, the routine test fails. The meters should
be recalibrated with milk.
Air inlet:
Increased air inlets or leakages will cause deviations in the reading of the Free
Flow milk meter.
If the air inlet has significantly changed by more than 10% compared with the
installation test, for example by air leakages along the cluster to the Free Flow
milk meter, the routine test fails. The meters should be recalibrated with milk.
The air inlet can be observed by visual inspection and by measuring the air
leakage using the methods as described in ISO 6690 – Mechanical tests for
milking machines.
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Vacuum level :
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69
Periodic checking of approved and
provisionally approved meters
Check of FREE FLOW internal parameters
Each FREE-FLOW meter has the following reference values.
Optical channel:
Two values that should be measured using a test probe. The reference values
are measured upon initial parlor calibration and saved for subsequent periodic
checks. It is imperative that the SAME probe is used for the initial and periodic
checks.
Bias-Factor:
One value that is used to fix the measured FREE FLOW bias.
Sub-Software:
This number represent the algorithm used by the FREE FLOW to compute the
yield. It is set when installing the FREE FLOW and must remain constant.
By using the Free Flow remote control unit, the FREE FLOW internal parameters are checked. These
values are written down on the routine test form (annex 2). If by some malfunction the parameters
have been changed, these parameters must be restored to the original values. If not, the meters
should be recalibrated with milk.
Principle of the test
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Switch OFF all FREE FLOW-units
Turn ON the FREE FLOW units and monitor each FREE FLOW display. Numbers will appear on the
display and finally the FREE FLOW will display P-UP. Only 2 of the 3 last numbers displayed are used
here. For example if upon power up the FREE FLOW displays the following :
2
A01
151
F100
D444
2141 : Sub-Software
688
1000 : Bias-Factor
P-UP
then only the values 2141 and the 1000 are used to write down on the form. The last number
(1000) is the Bias-Factor. The 2141 is the Sub-Software identification. Because the numbers are
displayed for only a short time, it is necessary to turn On and if each FREE FLOW -meter individually.
•
If the Bias-Factor or the Sub-Software values are not the same as the ones recorded during the
installation test, the FREE FLOW-meter fails in the routine test.
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ICAR International Agreement
of Recording Practices
Figure 1. Remote control to check FREE FLOW internal parameters.
In cases where the Bias-factor or the Sub-software has been changed (not allowed however) for
some reason, there are two possibilities:
1. Restore the original values using a technician level remote control.
2. Recalibrate with milk.
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Periodic checking of approved and
provisionally approved meters
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Probe flow simulation test
The probe test is simulating a milk flow. The FREE FLOW flow reading is compared to the original
reading obtained during the installation test. If the obtained value is the same, then the optical field
and milk channel characteristics, transparency and color have all stayed the same, so the FREE
FLOW still measures the same as during the installation test.
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71
Periodic checking of approved and
provisionally approved meters
Figure 2. The probe FRT1 and remote control FRC1.
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Wash the test probe GENTLY using any soft soap. Dry the probe afterwards
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Verify all FREE FLOW-channels are dry and clean
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Wait 10 minutes to verify all units are perfectly stable. If some FREE-FLOW units an Hxxx message
show, wait until it disappears. The Hxxx message imply that the FREE-FLOW internal temperature
is not stable yet.
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While the FREE FLOW-meter is in the technician mode and the FREE FLOW channel is dry, the FREEFLOW performs an internal Self Test. The Self Test status is shown on the FREE-FLOW’s display as
Cxxx every 10 to 20 seconds. As long as the FREE-FLOW meter shows the Cxxx message the Self
Test is ok. IF no Cxxx message is seen or if SRVx message appears the Self Test failed.
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If the Self Test failed the operator should verify that the FREE-FLOW channel is dry and clean and
wait for the Self Test status again. If still the FREE FLOW Self Test fails, the operator can try to fix
the problem by using the remote’s “RECAL” option. If still the FREE_FLOW self-test fails the FREE
FLOW meter is defective and should be replaced.
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If the xxx values are lower than 80, a RECAL of the FREE FLOW can optionally be done, although NOT
mandatory. After RECAL the FREE FLOW with DISPLAY CXXX again but the XXX will be between 98
and 100.
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For this test, a probe (FRT1) and the remote control unit (FRC1), are required.
The FRT1 probe has several optical properties that simulate a milk flow. In the test mode, the FREE
FLOW meter displays the milk flow that is generated by the probe. The probe fits in the interior
measuring channel of the FREE FLOW meter. The probe should be cleaned before usage and as the
probes are not perfectly identical, the same probe should be used during the routine testing. The
probe belongs to the milking parlour and should be stored under good conditions on the farm, preventing
pollution and/or mechanical damage. Such will effect the test results.
The FREE-FLOW remote control is needed to set the FREE FLOW meter to the technician mode. This
technician mode is necessary to perform the routine test with the probe. No special maintenance is
needed for the FREE FLOW meter prior to the routine test procedure.
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Set all FREE-FLOW units to technician mode using the remote control
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ICAR International Agreement
of Recording Practices
•
Insert the test probe into the FREE FLOW channel. After a few seconds the FREE FLOW should
display a PASS message and two numbers. The two values represent the flows measured by the
FREE FLOW meter. The lower number is the minimal flow and the higher the maximal flow measured.
The numbers shown are 4 digits and usually between 3,000 and 4,000 kg per minute.
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Write the minimal and maximal flows on the “FREE FLOW routine test form” under MinP and
MaxP columns.
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During the routine test, the ratio between the current MinP and MaxP to the original MinP
and MaxP should be calculated.
Rmin = original MinP / current MinP
Rmax = original MaxP / current MaxP
Write the Rmin and Rmax values on the “FREE FLOW routine test form”
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If Rmin and Rmax are between 0.98 and 1.02 the FREE FLOW meter is OK. Values outside the
0.98-1.02 range are too big and the FREE FLOW meter fails for the routine test. In case of FAIL the
FREE FLOW channel should cleaned and inspected visually for any abnormalities. Note that most of
deviation from the perfect 1.00 result is usually because the probe test is very sensitive. Small
changes in the probe surface and/or cleanness will have some affect on the measurement.
Meters that failed the test should be inspected and if necessary cleaned internally and examined
again. If a FREE FLOW Self test fails, a RECAL command using the remote control may fix the
problem. A meter that continues to fail should be replaced.
Older Meters
Some older FRE-FLOW units will display only 3 digits during the probe test. These meters display
Pxxx instead of xxxx. In those cases the P should be though of the digit 3 and the new number used.
For example if the FREE-FLOW displays P678 then actually the number 3.678 is used.
Sampling equipment
•
Check the sampling equipment parts and it’s cleanness
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Periodic checking of approved and
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Store sampling equipment in a dry place free from dust.
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73
Periodic checking of approved and
provisionally approved meters
TRU-TEST MILK METERS
How often should Tru-Test Milk Meters be water tested?
Tru-Test recommends that ALL Milk Meters are water tested at least once every 12 months.
How do I know when water testing is due?
When a Milk Meter is tested, a label is affixed to it showing the date the test was performed.
The Milk Meter should be tested within 12 months of this date.
Equipment required
To test Tru-Test Electronic Milk Meters (EMM’s), test
Tru-Test Fast Flow Water Test Rig, MMA00057 or
MMA00058
rigs manufactured before 2005 must be modified
with an air admission hole and rubber sleev e
(MMG00015: fast flow test rig inlet tube with a rubber
Figure 1. Equipment required.
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sleeve).
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ICAR International Agreement
of Recording Practices
Testing Tru-Test Electronic Milk Meters (EMM's)
Check the software
Ensure that the EMM and Data Handler software is up to date. The EMM should be running software
build m3_7e (or newer), and the Data Handler software build r3_3e (or newer). Ensure that the
Data Handler has been configured with the correct RC file by turning on the Data Handler. "Herd:
fftr" should be displayed. A correct version of the RC file can be supplied by your Tru-Test
representative.
To upload the RC file to the Data Handler:
1. Save the RC file in an appropriate directory on your PC.
2.
Start LinkTTEMM and open the RC file.
3.
Connect the Data Handler to a Data Transfer Unit and turn it on.
4.
Upload the file from LinkTTEMM to the Data Handler.
5.
Disconnect the Data Handler from the Data Transfer Unit.
Note: The RC file only has to be loaded once into the Data Handler. The settings will remain in the
Data Handler until a new RC file is loaded.
Water test an Electronic Milk Meter
Note: Water testing will take about 90 seconds per Milk Meter.
6. Turn on the Data Handler. "TRU-TEST HERD MANAGEMENT", "Herd: fftr" is displayed.
Turn on the EMM. Push the wash valve up into the milk position. Wait for the sample rotor to come
to a stop in the milk position.
8.
Mount the EMM on the test rig. Visually check that the meter is vertical (within +/- 0.5 degrees).
9.
Enter a unique animal ID (for this testing session) into the Data Handler and press Select on the
EMM. A warning is displayed on the Data Handler if the EMM is not vertical.
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10. Draw 16.0 L of test liquid through the EMM.
Periodic checking of approved and
provisionally approved meters
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7.
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11. Wait for 3 seconds and close the inlet tube valve.
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15. Once the EMM is empty, close the vacuum valve, remove the EMM from the rig, and open the inlet
tube valve.
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14. Press Finished Milking Release Sample on the EMM.
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13. Press Select on the EMM. The Data Handler displays the yield. Note the displayed number. The
result should be 16.0-17.0 kg (16.5 ± 3%). The Data Handler will indicate whether the result is
a Pass or a Fail.
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12. Wait for 10 seconds until the fluid settles.
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Repeat the test for each EMM.
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Periodic checking of approved and
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Turn off the Milk Meters and the Data Handler
1.
Turn off the EMM's using the Data Handler. See "Tru-Test Electronic Milk Meter Operating
Instructions" for instructions.
2.
Turn off the Data Handler
Download and interpret the test data
1. Connect the Data Handler to a PC.
2. Turn on the Data Handler and download the test data using LinkTTEMM.
Each EMM should have a reading of 16.0-17.0 kg (16.5 ± 3%).
Testing Tru-Test Mechanical Milk Meters
Water test a Mechanical Milk Meter
Note: Testing will take about 90 seconds per Milk Meter.
1. Mount the Milk Meter on the test rig. Visually check that the Meter is vertical (within +/- 0.5
degrees).
2.
Draw 16.0 L of test liquid through the Milk Meter, close the inlet tube valve.
3.
Read the scale on the Milk Meter flask. The result should be 16.0-17.0 kg (16.5 ± 3%).
4.
Empty the Milk Meter.
5.
Once the Milk Meter is empty, close the vacuum valve, remove the Milk Meter from the rig, and
open the inlet tube valve.
Repeat the test for each Milk Meter.
If the reading for a particular Milk Meter is outside these limits:
1. Check the Milk Meter for air leaks around the cover o-ring, flask gasket, air admission valve and the
sampling valve at the base of the Milk Meter.
2.
Check the Milk Meter cover and sampling nozzle for damage and obstructions (e.g. hair, grit).
Replace these components if necessary, or remove any obstructions.
3.
Repeat the test.
If, after this, a particular Milk Meter measurement does not fall within the range of 16.0-17.0 kg,
disassemble and check the Milk Meter, then reassemble and test it again.
Servicing required
If a Milk Meter reading is still inaccurate, send the faulty Milk Meter sent to a Tru-Test Service
Centre for repair.
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Further checks
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ICAR International Agreement
of Recording Practices
Testing repaired Milk Meters
Where a measuring nozzle has been replaced on the Milk Meter, the Meter must be checked for
accuracy using the test methods described above.
Test date label
When a Milk Meter has been tested, a "Test date" label must be affixed to the Milk Meter. This
verifies that the Milk Meter has been tested and indicates the date the test was done. The label is
colour coded by year, with the months of the year around the perimeter. Affix a label to the Milk
Meter body with the number of the month of test (e.g. March=3, November=11) at the top of the
Milk Meter. The Milk Meter must be tested within 12 months of the date shown.
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Periodic checking of approved and
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Figure 2. Example shows next test due: February 2007.
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77
Periodic checking of approved and
provisionally approved meters
VMS SYSTEM DELAVAL
Periodic check of milk meter MM25
Introduction
Periodic checking of MM25 is carried out to ensure that the milk meter’s optical and mechanical
characteristics have not changed in any substantial way. If this occurs, the meter may measure the
milk flow incorrectly.
The principle of the check is a comparison between test values generated at the check and reference
values generated at an earlier point. The difference between the reference values and the test
values should be as small as possible. This means the meter’s measuring capabilities are essentially
the same as when the reference values were recorded.
The reference values must be recorded at the start-up of the system and always after calibration of
the meters.
Checking is done using a dedicated test probe, which is inserted into the channel of the meter. The
optical properties of the probe will cause the milk meter to interpret it as milk.
Note that it is important to use the same test probe from test to test when checking a specific set
of meters. The test probes are not interchangeable, hence their unique serial number.
There is a test probe delivered to each VMS farm. The test probe must be kept so that it is not
damaged or its optical properties altered.
Preliminary tasks
The following tasks must be done prior to the check to ensure that the tests produce relevant
results:
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Check which software version the meters currently are running. The test is not valid if the software
version has changed. The meters must in this case be calibrated and new reference values generated.
Measuring the air flow through the MM25 milk meters. The air flow through the meters strongly
influences the milk-flow figures from the milk meters.
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Check of vacuum level. The vacuum level in turn has a direct bearing on the air flow through the
system.
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If the test is carried out at the start-up of the system or after calibration; that is, if it is done to
generate reference values, do as follows:
1. Measure the air flow through the MM25 milk meters. The air flow should be about 6.5 litres/min
through each meter. Note the reference value on the test form (see below).
2.
Measure the vacuum level. Note the reference value on the test form.
3.
Run a system cleaning.
4.
Note the reference date and the serial number of the test probe on the test form.
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Run a system cleaning. The test must not be performed unless the milk meters are clean.
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ICAR International Agreement
of Recording Practices
5.
Go to ”Test using the test probe” below.
If the test is a periodic, follow-up test, do as follows:
1. On the PC, start Telnet and log on to the milking station as su (super user). Type hardware 7 at the
prompt then press the Enter key.
2.
Select option 1 then press the Enter key. This will show all parameters for the MM25 milk meters,
including the software version. If the software version is the same as for the previous test, continue
with step 3. If not, calibrate the meters and generate new reference values.
3.
Measure the air flow through all MM25 milk meters. The air flow should be about 6.5 litres/min. In
addition, the value must not deviate more than 10 per cent from the reference value. Note the
current value on the test form.
4.
Measure the vacuum level. The current value must not deviate more than 2.5 kPa from the reference
value.
5.
If the values for air flow and vacuum level fall within the acceptable margins, run a system cleaning
and go to ”Test using the test probe” below.
6.
If, on the other hand, the values for air flow and vacuum level fall outside the acceptable margins,
calibrate the MM25 milk meters and calculate a new Offset and Scalefactor. (See separate
instruction for calibration below.) Then continue with system cleaning and test using the test
probe.
7.
If the message Hxxx is shown on any meter, wait until it disappears. This message means that the
meter’s temperature is not yet stable.
8.
If the meters are dry they will now perform a selftest. The result will be shown as Cxxx where xxx
is a number in the interval 85-100. This means the selftest has succeeded.
9.
If the message Cxxx is not shown, or if the message SRVx is shown, this means the selftest failed.
In this case, see “If the selftest fails” below.
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Disconnect tubes and elbows from the underside of the meters. Check that all meters are clean
and dry.
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6.
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Select option 3 then press the Enter key. This will set all meters in technical mode.
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5.
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Type hardware 7 at the prompt then press the Enter key.
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4.
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On the PC, start Telnet and log on to the milking station as su (super user).
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Close the gates of the milking station and put the station in manual mode.
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11. Fill in the minimum and maximum flow under Current MinF and Current MaxF respectively on the
test form. (See below for the test form.)
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10. Insert the test probe in one of the meters. The meter will show PASS and two values after a few
seconds. The two values represent minimum and maximum flow. The values are shown as fourdigit
numbers and normally lie in the interval 3.0004.000 kg/min.
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Clean the test probe using mild detergent and water. Rinse and dry. Note that even minor changes
or deposits on the probe’s surface will affect the test result.
Periodic checking of approved and
provisionally approved meters
1.
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Test using the test probe
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79
Periodic checking of approved and
provisionally approved meters
12. Calculate Ratio min = Ref MinF / Current MinF and Ratio max = Ref MaxF / Current MaxF. Ref MinF
and Ref MaxF are the Current MinF and Current MaxF that were generated during the start-up of
the system (or after a calibration of the meters); that is, they are the reference values against
which the new Current MinF and Current MaxF will be compared.
13. Fill in the Ratio min and Ratio max on the test form. If the two values lie inside the interval 0.98-1.02,
the meter is working properly. If the values lie outside this interval, the meter failed the test. In
this case, see “If the test using the test probe fails” below.
14. Repeat steps 10-13 for the remaining meters.
15. When all tests have been performed, mount elbows and refit tubes.
16. Finish by setting all meters in non-technical mode: select option 5 from the main menu in the
hardware program.
It the selftest fails:
1.
If one of the meter’s selftest fails, dry and, if necessary, clean the meter’s channel. Be careful so
that you do not damage the meter.
2.
Wait for the result of the selftest.
3.
If the selftest once again fails, select option 11 (RECAL one FF) from the main menu in the hardware
program.
4.
If the selftest despite this fails, replace the meter.
If the test using the test probe fails:
1. If the test with the test probe fails for one of the meters, clean and check that the channel is not
damaged. Dry the channel.
Make sure the test probe is clean.
3.
Carry out the test once more
4.
If the values still lie outside the interval, replace the meter.
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2.
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ICAR International Agreement
of Recording Practices
81
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Periodic checking of approved and
provisionally approved meters
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Periodic checking of approved and
provisionally approved meters
PERIODIC CHECKING OF JARS
Frequency of periodic checking at least once in 24 months.
General
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Check on: height, fixing, stand, content, lighting milking stable, readability calibra­tion, acces­sibility
and leaking draw-off valves.
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conditions height:
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10 kg-line between 120 - 175 cm (preference-height)
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10 kg-line lower than 120 cm: sample draw-off valve on minimal 60 cm
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10 kg-line lower than 120 cm and draw-off valve lower than 60 cm (measuring glass under
wellhead): use of sample taking equipment and mirrors.
Reference value
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Water test: none - see below the principle of the test and evaluation observa­tions/ measuring.
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Check with electronic special - level, the so called protractor: number of measured digits.
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Electronic weigh-beam/bascule
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Some buckets of sufficient capacity
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Digital protractor (inc. box)
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Calibration standard
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Grab
Testing liquid
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Clean tap water
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No additions
The principle of the test and evaluation observations/measuring
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For new farms:
Water test
sucking of 5.8 kg water. The results must be: 6 kg +/- 0.1 kg.
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Required equipment
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A sucking set
sucking of 12.6 kg water. The result must be: 13 kg +/- 0.2 kg.
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ICAR International Agreement
of Recording Practices
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recording of corner in digits with protractor (bottom on 6 kg-line = reference-value).
Farms for periodical check:
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recording number of digits with protractor on 6 kg-line (bottom; top on 16 kg).
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compare number of digits to reference - tolerance +/- 130 digits (90 digits =0.1 kg).
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check on leaking taps.
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check air inlet for mixing the milk.
Deviating measuring glazes
When not coming up to this standard, the measuring glass has to be adjusted and again checked.
Replacement of measuring glazes
By numbering the measuring glazes (durable numbers) changing and replacing is easily noticed. In
such cases a new water test is carried out.
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Periodic checking of approved and
provisionally approved meters
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Reporting of the results
The results of the periodic checking, as well as the interim changes and the checks that go with
these changes will be reported to those concerned, among others to the farmer, to the main supplier
and to the national milk recording organization.
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85
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