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Nexisense Gas Safety Monitoring Solution: Intelligent Practice of Leakage Detection Terminals and Explosion-Proof Pressure Sensors
As the energy lifeline of modern cities, the safe operation of urban gas pipeline networks is directly related to household gas safety and public safety. In recent years, although gas leakage accidents have been effectively controlled, challenges such as complex underground chamber environments, high difficulty of manual inspections, and numerous blind spots remain prominent. Traditional inspection methods can no longer meet modern cities’ requirements for “full coverage, real-time, and intelligent” safety management.
The GT-100-2109B gas leakage detection terminal launched by Nexisense, combined with matching explosion-proof pressure sensors, is a systematic solution tailored for gas utilities under this background. By integrating high-precision laser gas detection, multi-parameter environmental sensing, wireless remote transmission, and intrinsically safe explosion-proof pressure monitoring, it helps gas pipeline networks shift from passive response to proactive prevention, significantly enhancing overall safety assurance.
GT-100-2109B Gas Leakage Detection Terminal: The “Intelligent Sentinel” of Chamber Safety
The GT-100-2109B is specially designed for enclosed or semi-enclosed spaces such as urban gas chambers, valve chambers, and pressure regulating boxes, integrating the following core functions:
High-sensitivity methane detection module based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology
Detection limit as low as 5 ppm, response time < 10 seconds
Proprietary algorithms effectively suppress cross-interference from non-methane gases such as ethanol and gasoline vapors, greatly reducing false alarms
Simultaneous integration of water immersion detection, chamber temperature and humidity monitoring, and optional pipeline pressure acquisition
IP68 full waterproof and dustproof design, suitable for long-term immersion, high humidity, and large temperature differences in underground environments
Built-in three industrial-grade lithium thionyl chloride batteries, supporting over 5 years of continuous operation under typical power consumption
Supports 4G full network or NB-IoT transmission, compatible with LWM2M protocol, enabling seamless integration with gas company smart platforms
The “install and forget” maintenance-free feature represents the greatest practical value of this terminal. In real-world projects, many chambers are located in remote areas and are difficult to open. Traditional battery-powered devices often require replacement every 1–2 years, whereas the ultra-long standby capability of the GT-100-2109B truly enables a significant reduction in inspection frequency and a substantial decrease in operation and maintenance costs.
Explosion-Proof Pressure Sensor: The Safety Cornerstone of Natural Gas Pipeline and Storage Systems
In gas transmission, pressure regulation, and storage processes, pressure anomalies are one of the primary causes of leakage and pipeline rupture. Nexisense explosion-proof pressure sensors adopt a flameproof (Ex db IIC T6 Gb) design, ensuring that they will not become ignition sources even in the most hazardous explosive gas environments.
Main technical features include:
Housing material: 304/316 stainless steel; probe optionally available in high-strength 17-4PH stainless steel
Measurement range: 0–6 bar to 0–100 bar (customizable to higher ranges)
Accuracy class: ±0.25%FS or ±0.5%FS
Wide-temperature digital compensation: stable output from -40°C to +85°C
Overload resistance: 150%FS, burst pressure above 200%FS
Electrical protection: lightning protection, RF immunity, electromagnetic interference resistance
Output options: 4–20 mA (two-wire) / RS485 Modbus RTU optional
The sensor is widely used in:
Pressure monitoring at key nodes of long-distance natural gas pipelines
Inlet and outlet pressure monitoring of gate stations and pressure regulating stations
Real-time pressure acquisition of gas storage tanks and spherical tanks
Differential and absolute pressure measurement at compressor inlets and outlets
Synergy Between Terminal and Sensor: Building a Complete Chamber + Pipeline Safety Perception Network
In smart gas project practices, the GT-100-2109B terminal and explosion-proof pressure sensors are often deployed collaboratively to form a three-dimensional monitoring system of “chamber environmental perception + pipeline pressure closed-loop monitoring.”
Typical deployment model:
Install one GT-100-2109B in each gas chamber to achieve comprehensive monitoring of methane concentration, water immersion, temperature & humidity, and internal micro-pressure
Install explosion-proof pressure sensors at pressure regulating chambers, critical valve chambers, or key pipeline points to upload real-time pipeline pressure data
All device data is centrally transmitted to the gas company monitoring platform via 4G/NB-IoT
Configure multi-level threshold alarms: methane concentration exceedance (Level 1/Level 2 alarms), water immersion alarms, pressure abnormalities (high/low limits), temperature and humidity exceedance
The platform supports multi-channel alerts via SMS, WeChat, voice calls, and apps, enabling maintenance personnel to respond immediately
This combined solution has been validated by multiple urban gas companies:
Numerous minor leaks were detected in advance before reaching alarm concentration thresholds
Non-leakage anomalies such as chamber flooding and sudden pressure drops were promptly handled
Overall false alarm rates decreased by over 80%, with significantly improved maintenance efficiency
Scalability and Future Upgrade Potential
The GT-100-2109B reserves abundant expansion interfaces, supporting external tilt sensors (to monitor abnormal chamber cover opening), vibration sensors, and secondary pressure transmitters. Future firmware upgrades can also support emerging technologies such as 5G network slicing and edge computing, providing a solid hardware foundation for the continuous evolution of gas pipeline networks toward “comprehensive perception, reliable transmission, and intelligent decision-making.”
Frequently Asked Questions (FAQ)
1. What is the greatest advantage of laser methane detection compared to traditional catalytic combustion sensors?
Laser technology offers almost zero cross-interference, extremely low false alarm rates, long service life, and no need for periodic sensor element replacement.
2. Can the battery really last more than 5 years?
Yes, under typical settings of data acquisition every 5 minutes and one upload per day. Actual battery life depends on acquisition frequency, network signal strength, and other factors.
3. Does the device support remote parameter configuration?
Yes. Through the LWM2M protocol, alarm thresholds, acquisition cycles, sleep strategies, and other parameters can be modified remotely.
4. Can the explosion-proof pressure sensor be used in pure oxygen or strongly oxidizing gas environments?
Standard models are not recommended for pure oxygen environments. Please communicate specific media requirements in advance for proper selection.
5. How to determine whether a chamber is suitable for deploying this terminal?
As long as the chamber has network coverage (4G/NB-IoT), potential methane accumulation risk, and a need to reduce inspection frequency, it is generally suitable.
Conclusion: Making Every Inch of the Pipeline “Visible and Controllable”
Gas safety is never a minor issue. With urban expansion, aging pipelines, and increasing gas demand, traditional extensive management methods are no longer sufficient. Through the organic integration of the GT-100-2109B gas leakage detection terminal and explosion-proof pressure sensors, Nexisense provides gas companies with a smart sensing solution that is “highly reliable, low maintenance, easy to integrate, and highly scalable.”
It not only helps detect risks in advance and reduce accident probability, but also delivers tangible value in reducing labor input, improving management efficiency, and supporting digital transformation. Under the new normal of “safety first, prevention-oriented” in the gas industry, choosing a monitoring system that withstands the test of time and real-world environments may be the most pragmatic step toward safeguarding urban gas safety.
