Secure Liberty EG4v12 - Display and Keypad Interface

Page 10 of 32 Liberty gas EG4v12 user cum maintenance manual BGX701-240-R01
Figure 4: Meter display in ‘Test Mode’
Note:
Only a few icons as described in section 3.2.1 are applicable for Liberty EG4v12 gas meter.
The meter is programmed to display information on manually pressing any numeric key on the meter
keypad. Sets of information relating to a function are grouped on each numeric key. Repeated pressing of
the same key manually jumps the display through the configured display list. Pressing key ‘B’ manually
allows the displays to go backwards.
3.2.1 Display icons
The following table lists the icons displayed on the meter LCD and their significance:
Display icon Significance
Displays alpha-numeric data such as gas consumption or a UTRN token
number during token entry or an alert message.
Indicates the volume of gas
Indicates the supply status – ON, READY, OFF
Table 1: Interpretation of LCD icons
3.2.2 Keypad functions
Number keys (0-9) functions:
 Used to display meter data
 Used to input tokens.
Key ‘A’ functions:
 Initiates token entry;
 Used as backspace during
token entry;
 Used to enable Emergency
Credit when made available;
 Initiates supply reconnection
from ARM state.
Key ‘B’ functions:
 Used to scroll back through a
display sequence;
 Initiates token authentication
process;
 Used to confirm supply
reconnection from ARM state.
Key ‘0’ functions:
 Initiates Commissioning
process if applicable.
 Displays test mode, time
and date (after successful
commissioning)
Balance, Volume and Days left
Emergency credit value and status
Friendly credit status