Maintenance Guide

Cellular MIU (CMIU™) Pit and Wall Installation and Maintenance Guide 37
Appendix A: CMIU™ Modes
The CMIU™ has three modes of operation.
l Basic
l Advanced
l Pro
Each mode has a distinct method of operation based on the frequency:
l Of cellular connection to transmit the meter readings.
l In which the CMIU interrogates the register to store meter readings.
Mode Register Interrogation Readings Delivery by Cellular Connection
Basic 1 hour Every 24 hours
Advanced 1 hour Every 4 hours
Pro 15 minutes Every hour
Table 10 – CMIU™ Modes
Leak Status Flag (Resets After 35 Days)
Based on total amount of 15-minute periods recorded in the previous 24-hour period.
Leak icon off Eighth digit incremented less than 50 of the 96 days of 15-minute intervals
Flashing leak icon Eighth digit incremented in 50-95 of the 96 days of 15-minute intervals
Solid leak icon Eighth digit incremented in all of the 96 days 15-minute intervals
Consecutive Days with Zero Consumption Flag (Resets After 35 Days)
Number of days the “leak status” was at a minimum value