Drop-down navigation: Provide expert services with customer satisfaction, be a reliable friend for customers, and achieve common development with customers. Service Philosophy
Hotline： 400-180-9689 Qingdao iESLab Electronic Co., Ltd.(Business Center) Address: 17th Floor, Building A2-3, Hanyu Jingu, High-tech Zone, Jinan City
扫一扫添加好友
NB-IoT Membrane Gas Meter is a prepayment gas meter based on the operator's narrowband cellular Internet of Things, which is based on the diaphragm type gas meter, equipped with electronic controller and NB communication module.
Product overview
NB-IoT Membrane Gas Meter is a prepayment gas meter based on the operator's narrowband cellular Internet of Things, which is based on the diaphragm type gas meter, equipped with electronic controller and NB communication module.
Key Technologies
u Low power consumption metering and NB-IoT communication technology
u Gas safety detection and anti-theft technology
u Meter-end step gas price prepaid core algorithm
Certification
Functional characteristics
u Dedicated IoT card for data communication via NB-IoT (narrowband Internet of Things)
u Three working modes: timed upload, manual upload and abnormal event upload. The upload features a staggering peak mechanism.
u On-line parameter configuration function and local infrared wireless communication interface.
u Has pre-paid function to realize remote recharge payment.
u Abnormality alarm management functions, including gas abnormity alarm, electric quantity abnormity alarm and communication abnormity alarm.
u Power supply by 4 AA alkaline batteries and built-in clock lithium battery.
u Status information such as accumulated gas volume, remaining amount, unit gas price, valve status and battery level are available at the meter end.
u Support gas meter hardware program update via a remote online form.
u Interface with externally connected gas leakage alarm apparatus. Linkage with the alarm apparatus is available.
u Mobile alarm function. When the meter is maliciously removed or damaged, the valve will close and alarm.
Key Technical Indexes
Product model | Unit | G1.6 | G2.5 | G4 |
Nominal flow | m³/h | 1.6 | 2.5 | 4 |
Maximum flow | m³/h | 2.5 | 4 | 6 |
Minimum flow | m³/h | 0.016 | 0.025 | 0.04 |
Level of accuracy | Class | 1.5 | ||
Limit of intrinsic error | % | Qmin≤Q＜0.1Qmax时±3 When Qmin≤Q＜0.1Qmax, ±3 0.1Qmax≤Q≤Qmax时±1.5 When 0.1Qmax≤Q≤Qmax, ±1.5 | ||
Maximum cumulative amount | m³ | 99999.999 | ||
Maximum working pressure | kPa | 15 | ||
Loss of total pressure | Pa | ≤250 | ||
Sealing | kPa | No leakage under 1.5 times of maximum working pressure | ||
Explosion proof criteria | EXib IIBT3 Gb | |||
Environment temperature | ℃ | -10～+40 | ||
Ambient humidity | %RH | ≤93%RH | ||
Medium conditions | Various types of gas, air, non-corrosive gases | |||
Power supply mode | 4 pieces of AA alkaline batteries, built-in lithium battery | |||
Battery life | Service life ≥ 12 months, easy to replace | |||
Built-in clock lithium battery | Service life ≥10 years | |||
Sampling method | Pulse/Hall sampling | |||
Display mode | Mechanical display and liquid crystal display | |||
Valve Control | Support remote valve control, can achieve different authority valve control, including ordinary valve closing and authority valve closing. | |||
Valve reliability | Continuous switching times shall not be less than 10000 times | |||
Valve closing time | s | ＜1 | ||
Clock error | s/day | ≤±3 | ||
Protection grade | IP65 | |||
Communication mode | NB-IoT, infrared | |||
Daily meter reading success rate | ≥99% | |||
One-time meter reading success rate | ≥98% | |||
Data reading accuracy | ≥99% | |||
Service life | ≥10 years | |||
