Introduction

Auto Water Meter Reading System

The AMR module is a combination communication and display module, it can read the digital output from a digital water meter and convert it into Modbus, the data is then sent to a remote auto meter reading system.

Central Host

Remote Host Integration

Although the digital water meter has a digital signal output, the interface is not standard RS485 and cannot connect directly to a remote host.

The AMR module acts as an intermediary that converts the interface and protocol from the digital water into the Modbus protocol over an RS485 interface that the remote host can connect to and understand.

Communication

Synchronized display

The AMR module can automatically read the data from the digital water meter and display it on its on board LED display. The LED display on the AMR and the digital water meter register is always consistent with the digital water meter.

Since there is no pulse output that is accumulated, missing pulses and noise masking as a pulse are a thing of the past. Even power interruptions are no longer an issue.

Water to AMR connection diagram

The AMR module is not just for communication, but is also an accessory to the digital water meter as it can act as an alternate display module that can be placed where the digital water meter cannot.

The AMR module also acts as a go between for the digital water meter and a remote auto meter reading system as the communication cable can be extended far beyond that which is allowed for the digital water meter itself.

System Diagram

System Diagram for AMR and AMR-D

Single Channel AMR

AMR100-D
  1. Uses standard Modbus/RTU over RS485 interface to connect with a remote host.
  2. Communication status indicators for testing and diagnosis of the communication link.
  3. LED display for showing the water meter reading.
  4. Wall mounted.
  5. Synchronized display, even power interruptions will not cause a desync.
  6. Easy setup using the front panel keys.
  7. Transmission cable distance from the water meter to the AMR can be up to 20 meters.
  8. Data is retrieved from the water meter once every minute to ensure that the water meter reading is always in sync between the water meter and the AMR.

Multi Channel AMR

AMR-D
  1. Eight digital water meter interface channels.
  2. Modbus over RS485 communications to link with a remote host.
  3. Communication status LED for determining connection condition.
  4. LED display for displaying the water meter readings.
  5. DIN rail mounted.
  6. Synchronized display regardless of power interruption
  7. Easy to setup using the front panel keys.
  8. Transmission cable distance from the water meter to the AMR can be up to 20 meters.
  9. Data is retrieved from the water meter once every minute to ensure that the water meter reading is always in sync between the water meter and the AMR.

Features

AMR and AMR100 interfacing
  1. Both AMR100-D and AMR-D are communication and display modules for digital water meters, they read their digital outputs and converts them to Modbus over RS485 for a remote host.
  2. Both AMR100-D and AMR-D automatically reads the water reading and shows it on their LED display
  3. There are two models for the AMR module, a single channel and eight channel version.
  4. The maximum cable length between the water meter and AMR module cannot be more than 50 meters and must use shielded twisted cable.