Smart Residential Gas Meter
•G1.6~G4, diaphragm gas meter
•EN1359, OIML R31/137 Standard
•Class 1.5, Vc=1.2dm³, Pmax: 50KPa, -25℃~55℃
•Steel shell, Pressure measuring point(Optional)
•With devices to prevent reverse flow and prevent the registration of reverse flow
•Integrated design of gas meter and valve
•Touch button, LCD and backlight
•Non-contact RF card prepaid
•Wired or wireless communication
•IP65 protection
Prepaid Functions | Support prepaid/postpaid mode, and it can be switched | ||
RF card prepaid (Optional) | |||
Max.8 steps of gas tariff | |||
Anti-storage (purchase limitation) | |||
Insufficient gas warning | |||
Self-defined overdraft | |||
Communication | Wired M-BUS/RS485 | ||
LoRaWAN/NB-IoT | |||
Wireless M-BUS (EN13757.4), Walk-by/Driver-by | |||
Protocol: EN13757.3, DLMS/COSEM, MODBUS-RTU | |||
Alarm and Event logs | Low-Battery detection & log | ||
Overflow, continuous small flow and meter stop detection & log | |||
Leakage (continuous gas use, valve failure, etc.) detection & log | |||
Anti-tamper (open case, magnetic interference etc.) detection & log | |||
History data, such as hourly data, daily data, monthly data, etc. | |||
Event log, such as top-up, valve open/close, etc. | |||
Security | Data encryption, AES-128, STS | ||
Communication security |