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Product at a glance

Electronic index gas meter

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.


  • Prepayment mode:
    • domestic customers
    • small commercial customers


  • 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


  • 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


Meter rating G1.6 Qmin 0.016m3/hr Cmax 2.5m3/hr
Working pressure Up to 0.5 bar
Cyclic volume 0.0012m3
Gas types Natural gas
Standards MID Class1.5 EN 1359
ATEX Ex II 3 G Ex ic IIA T6
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 value Rated for 2000 cycles (2000 ON and 2000 OFF operations)
Ingress protection IP54 (EN60529)
Temperature -10°C to +55°C (operating), -25°C to +55°C (storage)
Humidity 95% non-condensing
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