Alarm sources

Sensus NA2W Water alarms can be generated by the meter or the attached SmartPoint module, depending on the type of meter and the applied meter configuration.

NA2W Water alarms are classified into one of two categories, depending on which device generates the FlexNet alarm message:

SmartPoint module alarms, which are either indicative of the status of the SmartPoint module, such as a SmartPoint low battery alarm, or are water volume alarm conditions that the SmartPoint module detects based on readings retrieved from the meter or register.
Smart Meter alarms, which are alarms where the triggering condition is detected by the meter or register itself.

SmartPoint module alarms

There are two types of alarms that are triggered by readings from the meter or register for NA2W Water SmartPoint modules:

Legacy SmartPoint alarms: Alarms that are configured by selecting one of four fixed detection thresholds values based on the Unit of Measure and scaled to the Measurement Resolution from the SmartPoint module's configuration, which should match the configuration of the attached register.; Legacy SmartPoint alarms are configured with the FieldLogic Software Suite or RNI.; These alarms are supported on the 510/520M and 513/515M-PLS SmartPoint modules.
Granular SmartPoint alarms: Alarms with configurable detection thresholds that are very flexible, and are not restricted to the four fixed Legacy SmartPoint alarm detection thresholds.; Granular SmartPoint alarms are configured by the FieldLogic Software Suite or RNI.; These alarms were introduced with the 522M SmartPoint module and extended across the SmartPoint module product line.; Granular alarms are supported on the 515 SmartPoint module from firmware version B1.1.18 (2020-12-10) and 510/520 from firmware version B1.A.12 (2020-12-18).; The 525M SmartPoint module only supports granular alarms, it does not support legacy alarms.

The following Legacy and Granular alarms are supported:

High Flow alarms (previously Broken Pipe)
Reverse Flow
Continuous Flow (previously Customer Leak or Leak)

Both types of alarms are communicated from the SmartPoint module using the same FlexNet messages.

Smart Meter alarms

There are two types of Smart Meter alarms for NA2W Water meters:

Alpha/Beta alarms: Alpha/Beta alarms are fully supported in the iPERL meter, and partially supported by the ally meter when it is in Normal mode.
Gen2 Smart Meter alarms: Gen2 Smart Meter alarms are significantly more configurable than Alpha/Beta alarms and SmartPoint alarms. Meters and registers that support Gen2 alarms utilize a common alarm engine that supports multiple alarm types. Each sensor channel, such as volume, temperature, and pressure, supports a selection of these alarms with a corresponding numeric threshold and detection interval.; The iPERL+ and OMNI+ meters both support the Gen2 Smart Meter alarms, and do not support alpha/beta alarms.

Normal mode and Smart Meter mode

Whether alarms are triggered by readings taken by the SmartPoint module or by the meter itself is determined by if the meter is in Normal mode or Smart Meter mode.

The ally meter supports limited Alpha/Beta alarm reporting when it is in Normal mode. Use the "Enable Advanced Features" action in RNI Device Manager to enable an ally meter to use Gen2 Smart Meter alarm configuration and reporting.

The Cordonel NA and Electronic Register+ support Gen2 Smart Meter alarms when they are activated in Smart Meter mode. When these meters are in Normal mode, only SmartPoint module alarms are available.