Reading gas use, and hearing a leak
An NB-IoT or 4G module is what lets a smart gas meter do remote reading, prepaid credit, an alert when use looks wrong, and leak monitoring, instead of sending someone to the door. Most meters are on a battery, so the radio has to be frugal. SimtoLink modules for this work cover 4G, 5G, NB-IoT, and LTE Cat.1, with an industrial design and UART, SPI, and I2C. The company supports 500+ enterprise customers and has connected more than 10 million gas meters.
Where the gas-meter module sits
A household meter, a factory meter, a detector, and a pressure station do not report on the same schedule. The notes below are the usual jobs, and the radio that tends to fit.
Household meters
An NB-IoT module reports the daily freeze and the monthly freeze of gas use on a small power budget, and it can carry a tiered gas tariff and remote prepaid credit. PSM and eDRX are what stretch the battery past 10 years.
Commercial and industrial meters
A 4G module reports live flow and pressure, which is what a large user and a safety supervisor need, including high-flow metering and an alert when the reading looks wrong.
Leak monitoring
A standalone combustible-gas detector raises an alarm over NB-IoT, and it can close a valve for an emergency shutoff.
The pipeline
Pressure and flow at a regulator station or a valve pit go up through the module, which is the feed for network balance and for locating a loss.
Buildings and industrial parks
Gas meters in a commercial building or an industrial park join the energy platform through the module, so tenant metering, a usage total, and a safety walk share one feed.
Safety supervision
Meter and detector data land on a supervision platform, which is what housing and emergency departments ask for on explosion protection and compliance, including a warning and a response when something is wrong.
What a gas meter asks of the module
- More than one radio: Household meters usually sit on NB-IoT, where power matters. A commercial or industrial meter can use 4G when flow has to be live.
- Low power and a small board: A household meter is often on a battery. Standby current and board size have to stay small. PSM and eDRX are what stretch that life.
- Temperature outdoors and in a kitchen: A meter on an outside wall or in a kitchen needs −40°C to 85°C.
- The metering chip's own protocol: The module talks to the metering chip over CJ/T 188, the urban gas-meter communication protocol, so the meter design does not grow a new stack.
- From a sample meter to a utility lot: The range runs 2G through 5G, with documentation, an SDK, and production supply for gas-meter makers.
Which radio fits a gas meter
How often a meter speaks, how it is powered, and how strict the safety case is do not line up the same way for a home and a regulator station. Meter type, battery life, and where it is mounted should decide the module. The rows below are where gas projects usually start.
| Job | Radio | Why that radio |
|---|---|---|
| Household meters, leak monitoring | NB-IoT | Very low power, a battery past 10 years, a lower bill |
| Commercial and industrial meters | 4G | Live flow and pressure, high-flow metering |
| Pipelines, regulator stations | 4G | Several readings at once, locating a loss, a link that holds |
| Building energy | 4G | Tenant metering, a usage total, a platform link |
How SimtoLink fits a gas-meter program
For gas meters, the modules are industrial designs that hold temperature and shock, with technical support around the clock. NB-IoT is the recommendation for household meters and leak detectors that report infrequently. 4G is for commercial and industrial meters and for pipeline monitoring.
A meter maker gets the AT command set, the SDK, and sample code with the radio, and one account stays from the requirements note through a prototype and a production lot. As smart gas and safer use spread, demand for IoT gas meters keeps growing, and supply is meant to continue after the first utility batch.
How a gas-meter program usually moves
Gas utilities usually move in this order:
The choice turns on meter type (a household meter has to be frugal, a commercial meter has to be live), battery life (a household battery needs PSM and eDRX), and safety compliance (gas work needs explosion protection and a protocol that already fits). Start with a small pilot and check read success and whether a leak alarm still closes the valve. Household meters are usually better on NB-IoT. Commercial meters and the pipeline can use 4G.
A smart gas meter replaces a visit to the door and gives safety a live detector. SimtoLink has supplied modules to gas companies and meter makers, on CJ/T 188 and the related standards.