Microchip Technology ARD00330 データシート
Meter Calibration
© 2011 Microchip Technology Inc.
DS51964A-page 13
Depending on the accuracy and the meter type, all calibration stages are not required
to calibrate a meter completely. In some cases, only a few calibration stages are
required. The software allows individual stages to be carried out independently, during
the calibration flow.
to calibrate a meter completely. In some cases, only a few calibration stages are
required. The software allows individual stages to be carried out independently, during
the calibration flow.
2.3.1
Generic Flow chart for closed Loop calibration
Figure 2-1 represents the generic calibration process followed for:
• RMS Voltage
• RMS Current
• Active Power
• Reactive Power
• RMS Voltage
• RMS Current
• Active Power
• Reactive Power
FIGURE 2-1:
Generic Flow Chart for Closed Loop Calibration.
Start
Is Calibrate Button
Pressed
Read Meter Output Line Parameter
Is Error within
Specification or 5 times Iterations
Completed?
Calculate Gain using Formula
(in Gain Compensation)
Write New Gain to Meter
Wait for New Gain to take Effect
NO
YES
NO
YES
Compute Error Percentage with respect to
Input Line Parameter
Stop
Input to meter
Enter Line Parameter Value