AfiMilk MPC 3, Installation Manual

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AfiMilk MPC Installation Manual
69
First Time Operation
Chapter
7
Milk Meter Calibration
Afimilk MPC is calibrated in the factory to ensure milk measurement results within the
required accuracy ranges. However, since installation environment may affect milk
measurement accuracy,
Afimilk MPC requires calibration at installation.
Three calibration procedures are described in this chapter:
1. Calibrating Electrodes
2. Air intake compensation
3. Regulatory meter tests (DHI) and calibration
Calibrating Electrodes
Three electrodes in the milk meter body are the measuring probes of the meter.
Although electrodes are calibrated at the factory, cable and connection resistance may
affect their accuracy. Electrodes calibration compensates for resistance of the lines and
therefore, it is necessary to calibrate the milk meter after installation.
Electrodes calibration
procedure is performed with
a 100Ω (±0.1%) resistor. At
calibration, the resistor is
connected between
electrodes to test and
calibrate them. Afimilk offers
calibration tool for the
technician incorporating the
resistor and probes for
hooking to the electrodes
(See below).
Milk Meter Electrodes Calibration tool
Calibration tool is built of an encased resistor connected
to two socket connectors used for plugging on the
calibrated electrodes. This makes an easy to used
calibration tool.