Yes, they connect to any LoRaWAN or MQTT infrastructure (Kerlink, Cisco, Milesight, MultiTech, etc.) for flexible integration with existing SCADA systems.
< Industries/
energy-renewables
ATEX-Certified Monitoring for Biogas Digesters and Waste-to-Energy Gas Systems
Biogas and waste-to-energy facilities convert organic waste streams into usable energy through anaerobic digestion, gas upgrading, combustion, or co-generation systems. These facilities include digesters, gas storage domes, flare systems, gas cleaning units, mixers, compressors, and feedstock routing infrastructure.
Biogas typically contains methane (CH₄), carbon dioxide (CO₂), hydrogen sulfide (H₂S), and moisture. The presence of flammable gas mixtures, corrosive components, and pressure variability introduces operational and safety complexity.
Assets often operate continuously with limited shutdown windows. Many monitoring points are located in classified areas where wired instrumentation expansion can be costly and intrusive.
SENSAiO provides wireless LoRaWAN monitoring sensors for valve position, pressure, temperature, differential pressure, vibration, and acoustic behavior. SENSAiO is monitoring-only. It does not replace process control instrumentation, gas detection systems, flare control logic, or Safety Instrumented Systems. It extends distributed visibility to support earlier anomaly detection and maintenance prioritization.
The Operational Challenge
Biogas operations involve biological variability and mechanical stress:
- Digester pressure fluctuations due to gas production variability
- Thermal instability affecting biological performance
- Progressive filter restriction in upgrading systems
- Gas routing configuration errors
- Mixer mechanical degradation
- Intermittent flare discharge events
Unlike purely mechanical systems, digestion performance depends on stable pressure and temperature conditions. Deviations may develop gradually, making periodic inspection insufficient for early detection.
Operational priorities typically include:
- Continuous digester pressure monitoring
- Thermal stability verification
- Filter differential pressure tracking
- Gas routing verification
- Mixer vibration monitoring
- Flare anomaly investigation
The goal is improved condition visibility without modifying certified protection layers.
Why ATEX and Continuous Monitoring Matter
Biogas facilities frequently include hazardous areas due to methane presence and potential explosive atmospheres.
Equipment installed in these zones must comply with explosion protection regulations.
SENSAiO devices are designed for deployment in hazardous areas in accordance with:
- ATEX Directive 2014/34/EU
- IECEx certification scheme
Certification applies to the equipment category and protection concept defined in product documentation.
Hazardous-area classification, zone determination, and installation validation remain the responsibility of the operator.
Continuous monitoring is particularly relevant in biogas systems because:
- Pressure drift may precede membrane stress or dome deformation
- Temperature instability may affect biological efficiency
- Differential pressure may indicate upgrading system restriction
- Acoustic anomalies may indicate abnormal flare behavior
Monitoring provides time-resolved deviation visibility but does not replace certified explosion protection or gas detection systems.
Core Use Cases for
Biogas & Waste-to-Energy
Use Case
Sensor Type
ATEX
ROI/Value
Biogas Upgrading Differential Pressure Monitoring
Differential Pressure (ΔP)
Filter loading and restriction progression visibility
Gas Valve Position Monitoring
Valve position
Reduced misrouting risk during maintenance or feedstock changes
No items found.
Vibration
Acoustic
Differential Pressure (ΔP)
Temperature
Pressure
Valve position
Detailed Use Case Descriptions
1) Gas Valve Position Monitoring
Gas routing in biogas facilities involves manual and automated valves controlling flow between digesters, upgrading units, storage domes, and flare systems.
Incorrect valve alignment can result in pressure imbalance or inefficient gas utilization.
Valve position monitoring provides time-stamped opening percentage confirmation during transitions and maintenance activities.
SENSAiO does not actuate valves, verify sealing integrity, or replace interlocks. It provides configuration visibility to reduce troubleshooting time and improve operational documentation.
2) Digester Pressure Monitoring
Digester pressure reflects gas production rate, feedstock variability, and dome condition. Sustained overpressure or repeated fluctuation may indicate abnormal production dynamics or restriction downstream.
Continuous pressure monitoring supports early identification of deviation trends before protective systems activate.
SENSAiO does not replace certified pressure relief devices or gas detection systems. It provides pressure trend visibility to support operational review.
3) Gas Storage Overpressure Monitoring
Gas storage domes operate within defined pressure limits. Distributed pressure monitoring can provide additional trend context and event timestamping.
Monitoring supports improved coordination between production, storage, and flare operations.
SENSAiO does not replace dome protection systems or certified safety instrumentation. It provides monitoring evidence only.
4) Digester Temperature Monitoring
Anaerobic digestion efficiency depends on stable temperature ranges. Thermal deviation can impact microbial activity and gas yield.
Continuous temperature monitoring enables earlier detection of sustained drift or heating system instability.
SENSAiO does not regulate temperature or replace control loops. It provides additional trend visibility to support biological process optimization.
5) Biogas Upgrading Differential Pressure Monitoring
Upgrading systems include filtration and treatment stages that progressively increase resistance as contaminants accumulate.
Differential pressure monitoring tracks restriction rate-of-change and supports optimized maintenance intervals.
It does not measure methane purity or contaminant composition. It provides hydraulic resistance visibility requiring interpretation.
6) Digester Mixer Vibration Monitoring
Mixers operate continuously in abrasive, corrosive environments. Bearing wear or imbalance generates measurable vibration deviation before failure.
Vibration monitoring supports condition-based maintenance planning.
SENSAiO does not provide automated fault diagnosis or shutdown control. It provides baseline comparison and deviation detection.
7) Flare Acoustic Monitoring
Biogas flares manage controlled gas combustion and emergency discharge. Acoustic monitoring detects changes in sound energy patterns that may correlate with abnormal combustion behavior or unintended discharge.
It does not measure methane concentration or replace certified flame detection systems.
It provides time-stamped anomaly indicators to support faster investigation.
How SENSAiO Technology Works
| Open Wireless Architecture | LoRaWAN enables distributed deployment across digesters, domes, and flare systems without signal cabling. Transmission intervals are configurable according to monitoring requirements. Network design remains site-specific. |
| Sensor Design | Industrial battery-powered sensors measure valve position, pressure, temperature, differential pressure, vibration, and acoustic behavior. Devices provide measurement data only and do not execute control actions. |
| Integration | SENSAiO integrates alongside SCADA and maintenance systems without modifying control architecture. It is not part of Safety Instrumented Systems. |
| Data Intelligence | Baseline establishment and deviation detection support earlier anomaly recognition. Indicators highlight measurable change but do not automatically diagnose root cause. |
ATEX Compliance and Safety
Biogas facilities frequently include classified hazardous areas due to methane presence.
SENSAiO devices are designed for deployment in hazardous areas in accordance with:
- ATEX Directive 2014/34/EU
- IECEx certification scheme
Certification applies to the defined equipment category and protection concept.
Hazardous-area classification, installation compliance, and zone determination remain entirely the operator’s responsibility.
SENSAiO sensors are intrinsically safe monitoring instruments intended exclusively for condition visibility. They do not:
- Replace explosion mitigation systems
- Replace gas detection systems
- Replace Safety Instrumented Systems
- Provide risk reduction credit under IEC 61508 / IEC 61511
- Function as engineered protection layers
They contribute to safer operation by improving anomaly visibility—not by replacing certified safety systems.
Proven ROI and Field Results
ROI in biogas facilities is driven by operational stability and reduced reactive intervention.
Potential Value Areas
- Reduced troubleshooting during gas routing transitions
- Earlier detection of digester pressure instability
- Improved biological temperature stability tracking
- Optimized upgrading filter maintenance
- Reduced unexpected mixer intervention
- Faster flare anomaly investigation
Conservative, Site-Dependent Performance Ranges
Operators may observe:
- 10–30% reduction in non-critical site inspections
- 15–35% earlier identification of filter restriction trends
- 10–25% increase in maintenance planning lead time
- 20–40% faster flare anomaly investigation cycles
These ranges are indicative and depend on deployment density and operational governance. SENSAiO does not increase methane yield by itself or replace safety systems. It supports earlier evidence-based decision-making.
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.
General & Functionality
No items found.
Specific Technical Questions/
Biogas & Waste-to-Energy
Can monitoring alone improve methane yield or plant efficiency?
Monitoring does not directly increase methane yield or guarantee efficiency gains. Yield improvement depends on feedstock composition, biological balance, temperature stability, and process control strategies. SENSAiO provides additional trend visibility on pressure, temperature, differential pressure, vibration, acoustic behavior, and valve configuration. Operational improvement depends entirely on how data is reviewed and acted upon. Monitoring supports earlier, evidence-based decisions—it does not replace process engineering optimization.
Does wireless monitoring increase ignition risk in methane environments?
SENSAiO devices are designed for deployment in hazardous areas under ATEX Directive 2014/34/EU and IECEx certification frameworks. They are intrinsically safe field devices when installed according to certified parameters and site zoning requirements. Hazardous-area classification and installation compliance remain the operator’s responsibility. SENSAiO does not replace explosion mitigation systems or gas detection systems and does not function as a protective safety layer.
What does acoustic monitoring detect in flare systems?
Flare acoustic monitoring measures sound energy generated by combustion or discharge events. Abnormal acoustic patterns may correlate with unstable combustion, intermittent venting, or unintended discharge. SENSAiO does not measure methane concentration, confirm combustion efficiency, or replace flame detection systems. It provides time-stamped anomaly indicators that support faster investigation and correlation with pressure or valve events. Interpretation remains operational and engineering-driven.
Can vibration monitoring prevent digester mixer failure?
Mixer assemblies operate continuously in corrosive and abrasive environments. Bearing wear, imbalance, or shaft misalignment generate measurable vibration deviation before mechanical failure. SENSAiO vibration monitoring establishes baseline behavior and detects progressive deviation trends. It does not automatically diagnose root cause, predict exact failure timing, or trigger shutdown. Engineering interpretation and maintenance decision-making remain required. The value lies in earlier detection and improved maintenance planning.
What does differential pressure monitoring reveal in upgrading systems?
Biogas upgrading systems often include filtration, desulfurization, or membrane stages. As contaminants accumulate, flow resistance increases and differential pressure rises progressively. Continuous DP monitoring allows operators to track loading rate-of-change rather than relying solely on periodic inspection. SENSAiO does not measure methane purity, H₂S concentration, or membrane degradation chemistry. It provides hydraulic resistance visibility that supports maintenance scheduling and system performance review.
How does temperature monitoring influence biological stability?
Anaerobic digestion efficiency depends on maintaining stable temperature ranges suited to microbial populations (mesophilic or thermophilic regimes). Sustained deviation can reduce methane yield and biological stability. SENSAiO temperature monitoring provides continuous trend visibility, enabling earlier detection of heating system drift or thermal stratification effects. It does not control heating systems, regulate energy input, or guarantee process optimization. It provides additional data points to support process engineering decisions and biological performance assessment.
Can digester pressure monitoring prevent overpressure events?
Digester pressure monitoring provides continuous visibility of internal gas pressure trends. Sustained increase, repeated fluctuation, or abnormal pressure cycling may indicate downstream restriction, excess gas production, or valve malfunction. However, SENSAiO does not replace pressure relief valves, rupture disks, flare interlocks, or Safety Instrumented Systems. It does not execute shutdown or venting actions. Monitoring supports earlier identification of abnormal pressure behavior, allowing operators to intervene before protective systems are challenged—but it is not itself a protective barrier.
Does SENSAiO replace methane gas detection systems in biogas plants?
No. Certified gas detection systems measure methane concentration in air and trigger alarms or safety actions when predefined thresholds are exceeded. SENSAiO does not measure gas concentration and does not confirm the presence, location, or rate of a methane leak. Pressure or acoustic deviation monitoring may indicate abnormal operating behavior that warrants investigation, but it does not replace gas detection or regulatory safety instrumentation. SENSAiO contributes additional operational visibility. It complements, but does not substitute, certified gas detection and explosion protection systems.
Maintain Safe Biogas Containment
Implement continuous hazardous-area monitoring to prevent overpressure and gas release incidents in waste-to-energy facilities.
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