Neptune Technology L900 MIU Pit, Руководство по установке и обслуживанию, Страница: 39 / 42

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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 25.
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Recessing the installation reduces the range of the antenna.
Figure 25 – Antenna Placement for High Traffic Areas
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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.
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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 11 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 11 – 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 and Wall Installation and Maintenance Guide 25
Chapter 5: Pit Installation