Secure Liberty EG4v12 - 5.10 Detecting Events; 5.10.1 Hardware Events; 5.10.2 Tamper Events

Page 22 of 32 Liberty gas EG4v12 user cum maintenance manual BGX701-240-R01
Followed by
If the user confirms the action by pressing key ‘B’ within 30 seconds of pressing key ‘A’, the valve will open,
and the default display of the current mode will resume otherwise the display will revert to the Ready state
display cycle.
5.10 Detecting events
The meter events should be checked periodically. Liberty EG4v12 detects the following events and stores
them in the form of flags for the last three billing periods and current billing period:
 Hardware events
 Tamper events
 Prepayment events
 Valve operation events
If a faulty position of the meter’s valve persists for 180 seconds, then it will be logged as an event flag.
Similarly, the presence of magnetic field for 10 seconds will be logged as a tamper event flag. The meter will
retain event data after decommissioning.
The following events are logged throughout the billing cycle:
 Magnet
 Meter tilt
 Overload
 Front cover open
 Clock invalid
The following events are logged at the time of billing only:
 Battery status
 Account status
 Valve Status
 Valve Leak
Note: Alerts for event logging and acknowledgement is configured in tariff at the time of manufacturing.
5.10.1 Hardware events
The occurrence of hardware events in the meter, such as a low battery or battery failure or valve failure or
RTC failure is logged as diagnostic flags.
5.10.2 Tamper events
Liberty EG4v12 can be configured to disconnect the supply when it detects a tamper event. The meter is
programmed to record the following as tamper events:
 Removal or restoration of the meter battery cover
 Induction of a DC magnetic field