User Manual

l When installing in a high traffic area, Neptune recommends
that the dome of the antenna be recessed in the pit lid as
shown in Figure 12.
l Recessing the installation reduces the range of the antenna.
Figure 12 – Antenna Placement for High Traffic Areas
l For best results, Neptune recommends installing the L900 MIU
in a location that provides a direct line of site to the path of
the meter reader.
l Although the L900 MIU has a cable already attached (2 feet
or 6 feet), some installations can require additional cable. In
these cases, the maximum cable length between the encoder
register and L900 MIU depends on the register's manufacturer
and model. Refer to Table 7 for maximum cable lengths.
Encoder Register Maximum Cable Length
Neptune ARB V* 300 feet (91 meters)
Neptune ProRead / E-CODER 500 feet (152 meters)
Sensus Protocol Register 200 feet (61 meters)
* Meets manufacturer's published specification for wire length
between encoder and remote receptacle.
Table 7 – Cable Length and Manufacturer
L900 MIU Pit Installation
The following section describes how to install a single L900 MIU
in a pit location.
L900 MIU Pit Installation and Maintenance Guide 15
Chapter 4: Pit Installation