iPERL alerts

The following information describes the alarms, errors, and warnings for the iPERL meter.

Table 1. iPERL alerts
Meter event name	RNI event name	Event description	Event trigger	Event source	Xylem recommended action
Backflow/Reverse Flow	Reverse Flow	Water is flowing in the pipe in reverse for 15 minutes.	Water is flowing in the pipe in reverse for 15 minutes.	Smart Meter	Investigate.
Config Error and Historical Config Error*	Configuration Error	Configuration file has been set to the defaults.	Set when no valid configuration is found and firmware loads the defaults for configuration.	Smart Meter	Investigate, reconfigure meter in field, make plans to replace meter soon.
Critical Hardware Warning	Critical Hardware Warning	Meter has detected that some peripheral hardware may be failing, but this does not affect core water metrology.	Detection of possible hardware failure.	Smart Meter	Investigate.
Dead Battery	Dead Battery	Meter battery is dead or too low to accumulate flow data.	Battery capacity drops below functional threshold.	Smart Meter	Replace the meter.
EMF Range and Historical EMF Range	EMF Range	Voltage between electrodes is too large to measure water flow.	Voltage between electrodes is too large to measure water flow.	Smart Meter	Replace the meter.
Empty Pipe	Empty Pipe	No water is detected for one minute.	Metrology had detected an empty pipe if no water is detected for one minute.	Smart Meter	Investigate.
Glide Slope and Historical Glide Slope	Glide Slope	Battery monitoring algorithm is detecting current consumption greater than expected.	Battery monitoring algorithm is detecting current consumption greater than expected.	Smart Meter	This alarm is informational.
High Current	High Current	Meter may be consuming excessive power, possibly due to frequent bidirectional communications.	Meter estimates power consumption is over 4 times target budget.	Smart Meter	Investigate.
High Current and Historical High Current	High Current	Set if the 15 minute power estimator power consumption is 4x more than expected. Early detection of high power consumption.	Set if 1 minute power estimator power consumption is 4x more than expected. Early detection of high power consumption or magnetic tamper.	Smart Meter	Investigate.
High Temperature and Historical High Temperature	Register Over Temperature	Temperature exceeded the maximum temperature for rated components for one hour.	Temperature exceeded the maximum temperature for rated components for one hour.	Smart Meter	This alarm is informational.
Leak	Continuous Flow	Metrology detects continuous forward flow of any rate for 24 hours or more.	Metrology detects continuous forward flow of any rate for 24 hours (or more)	Smart Meter	Investigate.
Low Field and Historical Low Field	Low Field	Magnetic field has drifted outside of expected field range. Early detection of magnetic tamper.	Magnetic field has drifted outside of expected field range. Early detection of magnetic tamper.	Smart Meter	Informational.
Magnetic Tamper	Magnetic Tamper	Meter could not regulate the magnetic field for 15 minutes.	Meter could not regulate the magnetic field for 15 minutes.	Smart Meter	Investigate.
Meter Low Battery*	Low Metrology Battery Volts	This is an indication that end of the device's estimated life is nearing. There is less than six months of battery life left.	1. Time in 'idle' mode 2. Time active (normal operation) 3. The calculated consumption amount.	Smart Meter	Make plans to replace meter soon.
Metrology Communications Error	Internal Communication Error	Meter is unable to communicate with metrology core.	Meter is unable to communicate with metrology core.	Smart Meter	Return Material Authorization (RMA) to Sensus or replace the meter.
Misc Metrology		The metrology data is potentially becoming unreliable due to high noise or excessive flow rate.	High noise: There is a potential degradation in meter accuracy caused by an applied external electric current on or in the water line that exceeds the threshold for at least 15 minutes. Excessive flow rate: This threshold is programmable after R1.1.xx. Prior to that release, the maximum allowable flow rate is 55 gpm, the maximum flow physically possible for a 3/4" ally meter.	Smart Meter	If this alarm is caused by high noise, it will clear when the noise drops below the programmed threshold, or if the meter enters empty pipe mode.
Non-Volatile Memory Error	Configuration Error	Data violation. The configuration file and calibration file do not match.	Data violation; the configuration file and calibration file do not match.	Smart Meter	Return Material Authorization (RMA) to Sensus. Sensus will troubleshoot, reconfigure or upgrade the firmware.
Reboot	Meter Reboot	Meter has rebooted.	Meter has rebooted.	Smart Meter	Investigate excessive reboots.
Severe Hardware Problem	Hardware Failure	The controller is not communicating with the metrology chip. No accumulation of water flow was collected.	Core metrology hardware failure or calibration data corruption.	Smart Meter	Return Material Authorization (RMA) to Sensus or replace the meter.
SmartMeter Low Battery Volts and Historical Low Battery Volts*	Low Metrology Battery Volts	Meter's battery volts has dropped to 2.5V for at least one hour.	Meter's battery volts has dropped to 2.5V for at least one hour.	Smart Meter	The alarm will clear if the battery’s voltage goes above the threshold; no further action is required. If the low battery flag is continually detected this is an indicator that the unit needs to be replaced.
SmartMeter TouchRead Failure and Historical TouchRead Failure	Touch Read Failure	Communications error detected on the Touchcouple interface by the meter.	Communications error detected on the Touchcouple interface by the meter.	Smart Meter	Investigate.
Swapped Meter	Swapped Meter	Meter has been changed without properly configuring the SmartPoint module.	Meter has been changed without properly configuring the SmartPoint module.	Smart Meter	Investigate.
Upgrade Mode	Upgrade Mode	The meter gets stuck in firmware upgrade mode. While in this mode no accumulation of water flow is collected.	Initiation of firmware upgrade.	Smart Meter	Water meter metrology can only be upgraded in the field or by Sensus. Use the tool to exit the upgrade mode.