User's Manual
Table Of Contents
- Introduction
- Product Description
- Operating Instructions
- Outputs
- Testing
- Installation and Removal
- Glossary
- Display
- Nameplate Information
- Wiring Diagrams
- Technical Specifications
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30 November 2006 1-1
REX Meter
Technical Manual 1 Introduction
1 Introduction
The REX Meter The REX meter, manufactured by Elster Electricity, is an all-electronic meter
focused exclusively on residential electricity revenue metering applications. This
meter meets or exceeds ANSI C12.1, C12.10, C12.20, and other appropriate
industry standards.
While capable of operating as a stand-alone meter for certain functions, the REX
meter is primarily designed to provide a flexible metering platform that can
operate with a variety of communications technologies to provide remote or
automated meter data collection, also referred to as automated meter reading
(AMR).
The meter consists of a socket-mounted meter enclosure with current and
voltage sensors connected to a powerful microprocessor-based metering
calculation engine. The unit measures, processes, stores, and locally displays
energy (kWh) and other related metering data via an integral liquid crystal
display. Metering data is also made available to AMR communications modules
that can either be mounted onto the main metering circuit board or added as
optional separate circuit boards for which space is provided under the meter
cover.
The REX meter can include an integral Elster Electricity-designed radio
frequency (RF) transmitter and receiver module that operates in the 900 MHz
unlicensed spectrum. The 900 MHz module allows the REX meter to support
two-way communications with other meters in an Elster Electricity-designed RF-
based local area network (LAN) for automated meter reading. The Elster
Electricity RF LAN technology includes such functions as automatic registration
upon installation, network time synchronization, downloading of time-of-use
(TOU) metering schedules, scheduled demand reset, reprogramming of REX
functions, and numerous other features.
The REX meter and its 900 MHz LAN module are part of the Elster Electricity
EnergyAxis
®
System for meter data collection and management, which is
designed to support full two-way AMR capability to every REX meter.
By using the full capabilities of its meter engine and the Elster Electricity 900
MHz RF LAN, the REX meter offers a highly flexible metering platform, allowing
implementation of metering functions such as basic energy measurement (kWh),
power (kW demand), TOU metering, load profile interval recording, and critical
tier pricing. With the Elster Electricity EnergyAxis System, any of these features
can be engaged or disengaged remotely at any time, thus offering operational
flexibility without the costs of manual meter reading, equipment change-outs,
site visits, meter reprogramming, and other expenses.
Technical
Manual
REX
Meter