Yes, they connect to any LoRaWAN or MQTT infrastructure (Kerlink, Cisco, Milesight, MultiTech, etc.) for flexible integration with existing SCADA systems.
Hydrogen Vent Line Acoustic Monitoring
Abnormal discharge anomaly indication
Acoustic
Quick Overview
| Problem | Hydrogen venting events and unintended releases are not always continuously detectable, especially in distributed or exposed infrastructure. |
| Solution | SENSAiO acoustic sensors monitor sound signatures associated with gas flow in vent lines. |
| Value | Improved visibility on venting activity, supporting earlier detection of abnormal or unintended gas release. |
| ATEX | Designed for hydrogen environments, compliant with ATEX / IECEx requirements for explosive gas atmospheres. |
The Operational Challenge
Hydrogen infrastructure includes vent lines used to:
- Safely release excess gas
- Manage pressure during operation
- Support purging or maintenance procedures
Hydrogen is a low-density gas with:
- High diffusivity
- Wide flammability range
- Often limited visual detectability when released
From a physical perspective:
- Gas flowing through a vent line generates acoustic energy due to turbulence and pressure gradients
- The intensity and frequency of sound depend on flow rate and pressure differential
- Even small leaks can produce detectable high-frequency acoustic signatures
Typical issues include:
- Unintended venting due to valve leakage
- Continuous low-level leaks
- Abnormal flow during pressure relief events
- Undetected gas release in open or noisy environments
Detection challenges include:
- Hydrogen being colorless and odorless
- Limited instrumentation on vent lines
- Difficulty distinguishing normal vs abnormal venting
- Environmental noise masking small acoustic signals
As a result, abnormal gas release may not be immediately identified.
Why Acoustic Monitoring Matters
Acoustic monitoring captures the physical manifestation of gas flow.
By continuously monitoring acoustic signals:
- Baseline venting conditions can be established
- Deviations indicating abnormal flow can be detected
- Event frequency and intensity can be tracked
Typical interpretations include:
- Sudden acoustic activity may indicate a venting event
- Continuous acoustic signal may indicate persistent leakage
- Changes in signal amplitude may correlate with flow rate variation
Acoustic data reflects turbulence and energy dissipation associated with gas movement.
SENSAiO Solution
SENSAiO deploys wireless acoustic sensors installed on or near:
- Hydrogen vent lines
- Discharge points
- Critical sections of gas handling systems
Sensors capture acoustic emissions and transmit data via LoRaWAN to a centralized monitoring platform.
The system provides:
- Continuous acoustic monitoring
- Detection of abnormal acoustic events
- Alerts based on deviations from baseline conditions
It is important to clarify that:
- SENSAiO is a monitoring-only system
- It does not quantify leak rates
- It does not identify gas composition
- It does not replace certified gas detection or safety systems
The system supports early awareness and investigation.
Results and ROI
ATEX Compliance and Safety
Hydrogen environments are classified hazardous due to flammable gas presence. SENSAiO sensors:
- Are available with ATEX / IECEx certification for gas zones
- Are designed for installation in hydrogen infrastructure
- Are suitable for explosive atmospheres
All equipment is delivered with appropriate certification documentation.
SENSAiO systems are not safety systems and do not replace gas detectors, emergency shutdown systems, or regulatory safety requirements.
Integration and compatibility
| Protocols | LoRaWAN, MQTT, REST API |
| Gateways | Compatible with standard LoRaWAN gateways (Kerlink, Multitech, Cisco, etc.) |
| Systems | Integration with hydrogen monitoring and maintenance platforms |
| Deployment | Suitable for retrofit on vent lines and gas handling systems |
FAQ - Common Questions
Are Sensa.io sensors compatible with any gateway or network?
What ATEX certifications apply to Sensa.io devices?
All hazardous-area models are certified Ex II 2 G Ex ia IIC T4 Gb and IECEx approved for Zones 0–2.
What is the typical battery life?
Up to 10 years at 15-minute intervals, depending on signal strength and environment.
How are the sensors integrated into existing systems?
Through standard protocols — LoRaWAN, Modbus, MQTT, REST API — no proprietary middleware needed.
How does predictive maintenance reduce OPEX?
Early anomaly detection reduces emergency interventions by 30–40 %, extends equipment life and lowers energy costs.
What does the Sensa.io Valve Position Sensor actually measure?
The device detects real-time valve position states—open, closed, or intermediate—with high accuracy. It continuously sends this information wirelessly to your monitoring dashboard.
Can this sensor detect partial valve movement or stuck valves?
Yes. The sensor identifies irregular patterns such as partial movement, delayed response, or stuck valves, enabling early maintenance before failure occurs.
Is this sensor suitable for manual, motorized, and actuated valves?
Yes. It supports a wide range of valve types including ball, gate, butterfly, actuator-driven, and manual valves.
How fast does it update the valve position?
You can configure the reporting interval—from seconds to minutes—depending on your operational and battery needs.
How long does installation take?
Most installations take under 10 minutes. The sensor mounts using brackets or clamps without modifying existing valves.
Explore Our Sensors
Valve position
The SENSAiO Valve Position Sensor provides real-time open/close feedback for manual and automated valves in oil & gas, chemical, and hydrogen operations.
Pressure
A rugged, industrial-grade pressure sensor designed for high-demand oil & gas applications. Provides continuous gas and liquid pressure monitoring, with ATEX intrinsic safety, IP67 housing, and LoRaWAN® connectivity.
Temperature
SENSAiO’s temperature sensor delivers precise temperature data for process lines, steam systems, heat exchangers, and storage assets.
Differential Pressure (ΔP)
A compact DP solution using dual synchronized pressure inputs to deliver accurate differential pressure data for filters, heat exchangers, separators, and manifolds.
Vibration
A high-resolution vibration sensor built for predictive maintenance of pumps, motors, compressors, and rotating equipment.
Acoustic
The SENSAiO acoustic sensor identifies ultrasonic leak signatures, gas escape, steam trap failures, and flare noise anomalies.
Trusted by a Worldwide Network
With partners in over 20 countries, SENSAiO delivers rugged sensor solutions to the toughest environments — everywhere.
