STANDARD
> Comply with international standard EN1359, OIML R137 and MID2014/32/EU.
> Approved by ATEX 
II 2G Ex ib IIA T3 Gb (Ta = -20℃ to +60℃)
MATERIALS
> Housing made through die-casting of high-quality steel.
> Diaphragm made of synthetic rubber with long life and temperature resistant.
> Valve and valve seat made of advanced PF synthetic resin.
ADVANTAGES
> Anti-tamper proof.
> Alarm function.
> Anti-magnetic interference function.
> Automatic data reporting (passive).
> Automatic meter reading through specified frequency band.
> When network cannot communicate, point-to-point meter reading through APP.(optional)
> 60 days historical data (daily total gas usage, alarm content, battery status).
SPECIFICATION
ITEM MODEL | G1.6 | G2.5 | G4 |
| Nominal Flow Rate | 1.6m³/h | 2.5m³/h | 4m³/h |
| Max. Flow Rate | 2.5m³/h | 4m³/h | 6m³/h |
| Min. Flow Rate | 0.016m³/h | 0.025m³/h | 0.040m³/h |
| Total Pressure Lose | ≤200Pa | ||
| Operation Pressure Range | 0.5～50kPa | ||
| Cyclic Volume | 1.2dm³ | ||
| Permissible Error | Qmin≤Q<0.1Qmax | ±3% | |
0.1Qmax≤Q≤Qmax | ±1.5% | ||
| Min. Recording Reading | 0.2dm³ | ||
| Max. Recording Reading | 99999.999m³ | ||
| Operation Ambient Temperature | -10～+55℃ | ||
| Storage Temperature | -20～+60℃ | ||
| Service Life | More than10 years | ||
| Lithium Battery Life | 10 years | ||
| Connection Thread | NPT 3/4 or Customized | ||
| Outside Case | Steel/aluminum | ||
| IP Protection | IP 65 | ||
| Communication | LoRa/LoRaWAN Protocol | ||
