User's Manual

R900 Wall and Pit MIU Installation and Maintenance Guide 1
1 Product Description
This section provides a general description of the R900 Meter Interface Unit (sub-
sequently referred to as R900 MIU or MIU).
The R900 MIU by Neptune is a compact electronic device that collects meter read-
ing data from an encoder register. It then transmits the data for collection by the
meter reader. A walk-by handheld or mobile unit receives the data and stores it to
be downloaded into the utility billing system for processing.
The R900 MIU is easily installed and operates within an RF bandwidth which does
not require an operating license. Because the R900 MIU can be mounted as far as
500 feet from the encoder register, optimum broadcast signal strength is obtain
-
able, ensuring a high percentage of accurate, one pass readings.
The R900 MIU meets FCC regulations part 15.247, allowing higher output power
and greater range. The R900 MIU uses frequency-hopping spread spectrum tech
-
nology to avoid RF interference and enhance security. The MIU reads the
ProRead
(ARB
®
VI) registers on an hourly basis and E-Coder (ARB VII) registers at
15 minute intervals and transmits the meter reading data and the unique 10-digit
MIU ID every 14 seconds. This allows the meter to be read by a walk-by handheld
or mobile data collection unit.
The R900 MIU is designed to offer advantages to utility organizations of all sizes:
• Increases meter reading accuracy.
• Eliminates “hard to read” meters.
• Protects utility liability by increasing meter reader safety.
• Requires no programming.
Figure 1 Wall MIU Figure 2 Pit MIU
However, a ProRead (ARB VI) register must be programmed in a three-wire mode.