Liberty EG4v 12 is an intelligent diaphragm based prepayment gas meter with G1.6 measurement unit, electronic index and isolation valve which is ideal for low flow rate installations for residential segment.
Liberty EG4v 12 supports Pay As You Go (PAYG) mode of operation. The meter uses Bluetooth low energy (BLE)
communication to connect with mobile application. Consumer's mobile application is used to generate top-up/recharge token and transfers it to meter.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Application

    • Prepayment mode:
      • domestic customers
      • small commercial customers
  • Benefits

  • Customer

    • Upfront payment, better cashflow
    • Reduced operational cost – no need to generate and distribute bills
    • No commercial loss - zero debt

    Consumer

    • Purchase of gas as per need
    • Consumption info in monetary terms.
    • Predictable expenses, helps in budgeting
  • Features

    • Enhanced accuracy achieved through electronic calibration
      • Prepayment mode
      • Integrated isolation valve
      • Supports tariff change in field
      • Logging of billing data, events including tamper detection
      • Keypad for local entry of recharge token
    • Display of current and historical consumption with cost of consumption data
    • Friendly credit – to avoid disconnection during odd hours and weekends/holiday
    • Emergency credit – reserve credit for limited use
    • Specification
    • Meter

      Connection type

       

      Meter rating

      G1.6 , Q 0.016m3/hr , Q 2.5m3/hr

      Working pressure

      Up to 0.5 bar

      Resolution

      0.0012m3

      Gas types                                                                        

      Natural gas

      Compliance

      Standards

      MID Class1.5 EN 1359

      ATEX Ex II 3 G Ex ic IIA T6

      Mechanical

      Dimensions (W x H x D)

      237 mm x 247 mm x 174 mm

      Weight

      2.5 kg

      Enclosure

      Electronic Index - flame retardant polycarbonate

      Gas meter - powder coated steel case

      Battery                                                                           

      Field-replaceable battery

      Isolation valve

      Rated for 2000 cycles (2000 ON and 2000 OFF operations)

      Audible alarm

       

      Environmental

      Ingress protection

      IP54 (EN60529)

      Temperature

      -10 0C to +55 0C (operating),-25 °C to +55 °C (storage)

      Humidity

      95% non-condensing

      Features

      Tariff

      Slab or flat supported

      Load survey

      3 months

      Display

      Backlit 10-character alphanumeric starburst display with icons for status

      Keypad

      12 way - 0-9, A, B for local entry of prepayment code and access to displays

      Security

      AES128 encryptionSpecifications are subject to change without prior
      notice

      Battery life                                                                     

      Minimum 10 years with normal operations

      Low battery warning raised near end of life

      Isolation valve

      Option for valve close in case of excessive flow at valve opening and
      during tampers

       

      Alarms

      Alarm in event of meter tilt, magnetic tamper, battery cover open

      Communications

       
       

      BLE - Inbuilt