Sensi+™ NG: Multi-contaminant analyzer for natural gas and biogas

Designed to monitor natural gas contaminants

Sensi+ NG is a state-of-the-art gas analyzer designed to monitor four natural gas contaminants: H₂S, H₂O, CO₂, and O₂.

Providing real-time monitoring of contaminant levels, Sensi+ NG gas measurement helps ensure safety and operational efficiency by triggering threshold alarms. With its simple and user-friendly interface, Sensi+ NG offers AnalyzerExpert™ features that deliver expert insights and actions directly from the device to perform natural gas technical analysis.

ABB's Integrated Cavity Output Spectroscopy (ICOS) laser absorption technology has been used for over 20 years in the world's most reliable gas analyzers, providing advanced spectroscopic analyses that offer unparalleled accuracy, precision, sensitivity, and reliability compared to other TDL analyzers.

Taylored for biogas and biomethane production

Biogas production is increasing worldwide as the demand for clean energy grows. Biogas is generated through the anaerobic digestion of organic materials, such as food waste, agricultural waste, and animal manure. The raw biogas is then treated (upgraded) to remove excess hydrogen sulfide (H₂S), carbon dioxide (CO₂), and moisture (H₂O), resulting in purified biomethane gas.

Before biomethane is injected into the local gas grid, its quality is carefully controlled to ensure that it meets gas pipeline requirements. The Sensi+ NG excels in this area due to its compact size and its ability to reliably measure trace levels of four key contaminants found in biogas and biomethane: H₂S, H₂O, O₂, and CO₂. Additionally, the very low maintenance requirements of the Sensi+ NG make it particularly well-suited for biogas applications, especially since production sites may be located in remote rural areas. 

What is the importance of measuring contaminants in natural gas and biogas (biomethane)?

Measuring contaminants in natural gas is crucial for many reasons.

• Corrosion - Some contaminants become highly corrosive and need to be kept below certain value to prevent internal corrosion in the gas infrastructure such as pipelines and storage facilities.
• Safety – H₂S is a toxic gas that can be deadly even at very low concentration. For this reason, natural gas and biogas is treated to remove excess of hydrogen sulfide above certain limits.
• Regulatory compliance – acceptable level of H₂S, H₂O, CO₂ and O₂ in gas may be enforced by some standards or local regulation.
• Custody Transfer – Wherever a transaction of natural gas or biogas happens, not only the calorific value (MJ, or BTU) needs to measured, but the level of contaminants needs to be measured to ensure quality of gas.

Thoughtfully designed with the user in mind

Sensi+ NG, the single, compact natural gas analyzer based on one technology, multiplexed laser absorption spectroscopy, brings all the advantages of laser technology, saves space, and removes the need for multiple analyzers. It also simplifies deployment, operation, and service without compromising performance.

Easy installation and commissioning for hazardous areas

With the flame-proof and dual-seal design, the hazardous area-compliant gas analyzer necessitates only a simple wallmount installation and process tie-in with no complex purging system.

A simple field validation is all that's needed; the gas analyzer can then provide fast and reliable measurements without requiring any field calibration.

Learn more about the Sensi+ NG features 

Intuitive and insightful user interface on a modern software platform

The Sensi+ NG natural gas analyzer provides state-of-the-art user interfaces both on local and remote access for quick and in-depth information.

Local Human-Machine Interface (HMI)
Sensi+ NG is equipped with a 7-inch screen, three informational LEDs, and a gesture control system.

The local HMI provides multiple views for detailed information:

• Gas measurement screen
• Alarms screen
• Diagnostics and advanced diagnostics
• System information

Gesture Control
The local HMI is a read-only user interface (UI) and navigation is made through a gesture controller. The user can navigate through the multiple software pages by passing hand in front of the Gesture detector below the screen.

Modular design for easy serviceability

While keeping a small maintenance schedule, the Sensi+ NG natural gas analyzer offers a modular design for easy serviceability in the field.

This gas analyzer was designed from the ground up to be maintained by personnel with little or no prior knowledge of spectroscopic instruments.



Both hardware and software are designed to provide low maintenance through easily replaceable and accessible in the field electro-mechanical modules such as:

• Filters
  
• Pump Manifold
• Proportional valve assembly
• ICOS laser cell

Software maintenance support features:

• Self-diagnostics and health report via Dynamic QR code
• Automated Pump health status validation
• Direct access to user manual and service guides
• AnalyzerExpert Features

No consumables

Sensi+ NG does not require any consumables: no scrubber, no chemicals, no liquids, no tape, no zero gas, no UV light source, no carrier gas, no nitrogen purge gas. Hence, no need to procure, store, manage inventory and transport any consumables. It drastically simplifies operations, reduces technician callouts and lowers the overall cost of operation.

Reliable light source

Rugged laser technology eliminates the need for replacing light sources. ABB natural gas analyzers employ near-infrared diode lasers, ensuring many years of reliable continuous operation over all environmental conditions.

Dynamic QR code and autoID assistance

ABB’s dynamic QR code for analyzers is a unique feature that enables comprehensive product health checks and effective troubleshooting without physically connecting to the system. In addition to providing static information for analyzer identification from the AutoID feature, the dynamic QR code generates a report in pdf format about analyzer configuration and current health status.  

ABB specialists can use this data to troubleshoot and provide a rapid response solution.

My Measurement Assistant+

My Measurement Assistant+ is an AI-powered digital solution for maintenance and troubleshooting of measurement devices at industrial sites. Leveraging generative artificial intelligence (GenAI), cloud computing and augmented reality (AR), provides a single access point for information retrieval, device diagnostics and remote support  in industrial operations.