Maintenance Guide

Cellular MIU (CMIU™) Pit and Wall Installation and Maintenance Guide 3
Chapter 2: Specifications
This chapter covers the specifications for the CMIU™.
Electrical Specifications
The power is supplied by a lithium battery.
Transmitter
The following table defines the CMIU transmitter specifications.
Specification Description
Transmit Period l Basic – hourly readings delivered every 24 hours
l Advanced – hourly readings delivered every four hours
l Pro – 15-minute readings delivered every hour
Encoder Reading 15-minute and 60-minute options
Output Power Meets FCC Part 15.247 and FCC Part 27
FCC Verification Part 15.247
Table 1 – Transmitter Specifications
Encoder Register Interface
The following table provides information on the maximum cable lengths required for
different registers.
Cable Brand Length
Neptune ARB
®
V
300 feet (91 meters). Meets manufacturer's published
specifications for wire length between the encoder and the
remote receptacle. The length is based on solid three conductor
wire, 22 AWG.
Neptune
®
ProRead™ and
E-CODER
®
500 feet (152 meters)
Sensus Protocol registers 200 feet (61 meters)
Table 2 – Supported Encoder Maximum Cable Length