Early Anomaly Detection for Safer Gas Operations

Natural gas leaks pose a serious threat to people, property and business continuity — and that risk is growing. Between 2003 and 2018, gas leak incidents and response costs in the U.S. nearly quadrupled, with fire departments responding to more than 2 million leak-related calls and annual costs exceeding $500 million.¹

For utilities, the challenge is not just responding to leaks — it’s identifying abnormal conditions early enough to act safely and efficiently. Traditional approaches rely on periodic inspections and reactive dispatches, often sending crews into uncertain environments without full visibility into system conditions.

As safety expectations evolve, utilities are shifting from reactive leak response to proactive risk awareness using continuous data to understand system behavior before incidents occur.

The NXU Residential Smart Gas Meter supports this shift by providing early visibility into system anomalies, helping operators make more informed decisions before dispatching field crews. This early insight enables operators to assess risk before dispatching crews and determine whether a side audit or intervention is necessary, improving both safety and operational decision-making.

Gas Utility Challenges

As the scale and consequences of gas leaks continue to rise, utilities must address these risks while navigating a complex set of operational, regulatory and safety challenges:

Aging distribution infrastructure under heightened regulatory scrutiny and increased public visibility

Rising pressure to improve safety outcomes while tightly controlling operational and capital costs

Risk of small, undetected leaks escalating into fires, explosions or prolonged exposure events

Potential impacts including injuries, property damage, service disruptions and reputational harm

Unplanned emergency responses that increase field dispatches and strain operational resources

Methane emissions associated with leaks, creating environmental impact and compliance risk

Traditional vs. Modern Monitoring

Legacy Monitoring

Periodic inspections

Reactive dispatch

Limited visibility

Pre-Dispatch Intelligence

Continuous diagnostics

Risk-based dispatch

Real-time anomaly detection

Honeywell NXU Residential Smart Gas Meter

The Honeywell NXU Residential Smart Gas Meter, powered by Connexo®, is designed to raise the bar for residential safety by providing utilities with actionable, pre-dispatch insights. By combining advanced sensing with remote capabilities, operators can identify and mitigate risks before crews reach the field, helping reduce service calls and improve operational security.

Industry-Leading Structural Integrity

The NXU Residential Smart Gas Meter is engineered for long-term durability and precision to support a level of safety that exceeds standard industry requirements.

Exceeds Industry Standards: Designed and tested to exceed ASME B16.33 section 4.2 guidelines for pressure integrity and leak tightness.

Ultrasonic Technology for Safety and Precision

Ultrasonic measurement provides accurate flow and gas composition readings without moving parts, maintaining long-term reliability. Edge intelligence monitors the signal-to-noise ratio and changes in the speed of sound to detect dust or liquids in the measurement path, enabling pre-dispatch identification of anomalies.

Operational Efficiency and Insight

The NXU Residential Smart Gas Meter accommodates multiple consumption levels, helping to eliminate the need for future replacements. When paired with Honeywell Forge Performance+ for Utilities, real-time meter data helps utilities pinpoint inefficiencies, optimize maintenance schedules and prioritize field interventions. By combining operational flexibility with real-time insight, utilities can reduce unnecessary field activity while improving long-term asset management.

Efficiency gains²:

Up to 60% faster setup using built-in installation wizards
Up to 50% faster move-in/out processing with on-demand remote shutoff

Continuous Situational Awareness

Monitor ➔ Detect Anomalies ➔ Alert ➔ Evaluate ➔ Decide & Act

The NXU meter supports leak mitigation through a tiered response model:

Monitor
Automated safety checks perform comprehensive residential system integrity checks in approximately 180 seconds — without a truck roll — providing immediate visibility into on-site conditions.

Detect Anomalies
Advanced trend analysis identifies subtle aging effects, pressure instability and measurement inaccuracies before they may become hazardous or operationally disruptive.

Alert
When unusual activity is detected, the meter generates real-time alerts that provide operators with actionable context — including pressure changes, abnormal flow patterns or shifts in gas composition.

Evaluate
Operators assess alert data and system context to determine whether further investigation or action is required.

Decide and Act*
With clear insight into system conditions and potential risk, utilities can determine whether remote mitigation is sufficient or a field visit is required — helping ensure dispatches are better informed and planned.

_{* If integrated with a methane sensor, the system is designed to automatically initiate shutoff via NetSense without human involvement, subject to system conditions and network connectivity.}

“

Drawing on extensive automation experience and state-of-the-art gas monitoring technology, the NXU meter aims to prevent gas leak incidents and reduce unnecessary service calls. Its remote gas supply shutdown feature enhances safety protocols and operational efficiency.

- Deepak Sivanandan, Vice President of Innovation & Technology at Honeywell

NXU Residential Smart Gas Meter Key Features

Pressure Sensing With Integrated Intelligence
Continuously monitors system conditions and flags abnormal behavior that may require investigation.

Ultrasonic Flow Measurement
Provides high-accuracy insight into flow and gas composition, enabling detection of irregular patterns.

Real-Time Alerts and Diagnostics
Notifies operators of unusual activity so they can assess potential risks before dispatch.

Remote Shutoff Valve (Operator-Initiated)
Enables utilities to shut off gas service remotely when a risk is confirmed — reducing the need for truck rolls.

Optional Methane Sensor Integration
Supports automated shutoff workflows when methane detection thresholds are met, enabling faster response without human intervention.

Advanced Analytics
Transforms meter data into actionable insights that support safer, more efficient operations.

Dual-Form Factor Design
Supports multiple consumption levels within a single meter, reducing the need for future replacements and minimizing operational disruption.

Up to 20-Year Battery Life
Delivers long-term reliability with minimal maintenance, helping utilities reduce lifecycle costs and avoid frequent field servicing.

Conclusion

The NXU Residential Smart Gas Meter is designed to support safer operations by providing early visibility into abnormal conditions and enabling informed, timely response.

By shifting from reactive dispatch to insight-driven decision-making, utilities can help protect field personnel, reduce operational inefficiencies and respond to risk with greater precision and confidence.