Theory of Operation
Metrology
Version 1.0 Theory of Operation 5-1
Chapter 5
This chapter describes the theory of operation for the iCon™ APX Advanced Functionality
meter. Figure 5-1 supplements the information contained in this section.
Figure 5-1: APX Meter Operational Overview
Metrology
The APX meter performs certain operations on the power present at the socket to provide
accurate measurements. Metrology for power consumption consists of:
• Sensors
• Input
• Power Calculations
• Data Transfer
Sensors
The APX meter contains a current and voltage sensors for power measurement.
Current Sensor
Current is measured using proprietary Sentec® technology. There is one sensor for each phase,
and these sensors interface with the Metering Chip by means of three precision amplifiers.
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