Audited Supplier
1.Product description:
NFC (Near Field Communication) prepayment gas meter (AL) complies with the STS international prepaid standard, lt integrates the latest NFC smart chip to realize two-way communication. An intemnal valve helps to achieve prepayment and high-level security services.
NFC Prepayment Gas Meter follows the worldwide unique STS prepayment standard, which is open and secure, reducing the gas companies' reliance on meter providers, meanwhile greatly facilitating their third-party sales network expansion.
2. Features:
High resolution metering
NFC 2-way communication
STS token based payment mode internal valve
Various anti-tamperand safety protection mechanisms
IoT module interface reserved (optional)
3. NFC:
Integrating the latest NFC smart chip, NFC+ realizes the functions of near-field pointto- point communication, contactless card and reader.
Swiping card will activate two way communication, complete meter reading and recharging operations. According to multiple business requirements, an interal valve is integrated to achieve the prepayment function.
4. STS:
Comply with the STS intemational prepayment standard that is widely accepted by international utility companies and meter manufacturers.
Use a 20-digit token as prepaid medium, supporting, multiple channels such as NFC cards, mobile APPs, text messages, scratch cards, etc.
Enhanced encryption key management system to allow for distributed key management using multiple key management centers worldwide.
Easy for utility companies and third parties to integrate with existing sytems, enhance the interoperability and compatibility of meter manufacturers and system providers, and easy for utility companies quickly expanding third-party gas sales channels.
5. IoT Module Interface Reserved(Optional):
Thanks to the modular design concept, the online adaptation of GPRS, NB-IoT, LoRaWAN, Sigfox and other wireless communication networks can be realized through the addition of diferent communication modules at factory, achieving realtime monitoring, remote valve controlling and post-payment billing services.
6. Compliance:
MID B&D certified
OIML R137(2012)
ATEX
7. Solution architecture:
8. Technical Parameters:
| Type | G1.6 | G2.5 |
| Qmax(m3/h) | 2.5 | 4 |
| Qmin(m3/h) | 0.016 | 0.025 |
| Accuracy class | 1.5 | |
| MPE | Qmin≤Q<Qt: ±3%;Qt≤Q≤Qmax:±1.5% | |
| Max. Working Pressure (kPa) | 50- base meter, 15 - base meter with valve | |
| Pressure Absorption (Pa) | ≤200 | |
| Working Temperature (°C) | -25~+55 | |
| Ingress Protection level | IP65 | |
| Valve Lifetime (time) | ≥10000 | |
| Battery Life (year) | ≥10 | |
(Battery life varies at different installation environment and communication frequency.)
9. Dimensions:
