User Manual

CHAPTER 3 VRT DIRECT GAS-METER TRANSPONDER OVERVIEW
EnergyAxis Gas Module ― User Guide Page 3
Elster Integrated Solutions • Draft Rev A Nov. 2007
Chapter Two
Automated Meter Reading Overview
The EnergyAxis system uses radio frequency (RF) signals to allow
utility personnel to automate meter reading activities. This
technology is called automated meter infrastructure (AMI). This
technology greatly increases the speed at which routes can be
covered with a high degree of accuracy.
Basic AMI Components
An automated meter reading system requires the following basic
components:
 Endpoint—The EnergyAxis Gas Module interfaces with the
meter index drive, counts the number of drive dial (proving dial)
rotations, receives commands from an interrogator and
transmits the index reading and other meter data.
 Interrogator—At its simplest, the interrogator remotely reads
meter data transmitted by transponders. At more sophisticated
levels an interrogator may also program transponders, store
route data and verify transponder conditions and data, among
other functions.