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FLIR Si-Series Acoustic Imaging Cameras

welcome to the FLIR Si-Series Acoustic Imaging Camera family

Detect compressed air leaks, gas leaks, partial discharge and mechanical faults faster - with FLIR acoustic imaging cameras supplied and supported by GoThermal.

Compressed air leaks, specialty gas leaks, partial discharge and mechanical faults are often invisible, difficult to hear and expensive when left undetected.

FLIR Si-Series acoustic imaging cameras convert ultrasonic sound into a visual image, allowing maintenance, reliability, electrical and engineering teams to quickly locate faults, quantify losses and prioritise corrective action.

GoThermal supplies the full FLIR Si acoustic imaging camera range in South Africa, including the Si1-LD, Si2-LD, Si2-PD, Si2-Pro, Si2x-LD and Si2x-Pro models.

Find compressed air leaks quickly in noisy industrial environments

Find compressed air leaks quickly in noisy industrial environments

Detect specialty gas leaks and quantify losses

Detect specialty gas leaks and quantify losses

Identify partial discharge in high-voltage electrical assets

Identify partial discharge in high-voltage electrical assets

Detect mechanical and bearing-related faults

Detect mechanical and bearing-related faults

Choose standard industrial or hazardous-location models

Choose standard industrial or hazardous-location models

Get local product guidance, demonstrations and support from GoThermal

Get local product guidance, demonstrations and support from GoThermal

FLIR Acoustic Imaging Supplied by GoThermal South Africa

GoThermal is part of TeleEye South Africa and specialises in FLIR thermal imaging, acoustic imaging, condition monitoring and industrial inspection technologies. We help South African maintenance teams, electrical engineers, utilities, mines and industrial facilities select and apply the right inspection tools for their environment.

FLIR product specialists

FLIR product specialists

Local South African support

Local South African support

Demonstrations available

Demonstrations available

Industrial inspection experience

Industrial
inspection experience

Thermal, acoustic and drone inspection expertise

Thermal, acoustic and drone inspection expertise

Product selection and application guidance

Product selection and application guidance

Hidden Leaks and Faults Are Costing More Than You Think

Compressed air leaks can waste energy every day. Gas leaks can create safety and operational risks. Partial discharge can indicate electrical insulation breakdown. Mechanical faults can lead to unplanned downtime if they are not detected early.

In many industrial environments, these problems are difficult to find with traditional inspection methods because they are hidden, intermittent or masked by background noise.

FLIR acoustic imaging cameras help maintenance and reliability teams see sound, making it easier to find the source of leaks, discharge and mechanical faults from a safe working distance.

Compressed Air Leaks

Compressed Air Leaks

Compressed air is one of the most expensive utilities in many plants. FLIR acoustic imaging helps locate leaks quickly and quantify the potential cost impact.

Specialty Gas Leaks

Specialty Gas Leaks

Gas leaks can create product loss, safety risks and compliance concerns. FLIR Si2 and Si2x models help detect and measure gas leaks in industrial applications.

Partial Discharge

Partial Discharge

Partial discharge can be an early warning sign of electrical insulation failure. FLIR Si2-PD, Si2-Pro and Si2x-Pro models support PD detection, classification & severity assessment.

Mechanical Faults

Mechanical Faults

Mechanical and bearing defects can produce acoustic signatures before failure. FLIR Si2-LD, Si2-Pro, Si2x-LD and Si2x-Pro models assist with mechanical fault detection.

Hazardous Areas

Hazardous Areas

For hazardous gas or explosive dust environments, the FLIR Si2x range is designed specifically for use in hazardous locations.

Hidden & Intermittent Issues

Hidden & Intermittent Issues

Hidden or intermittent leaks and faults are often masked by background noise. Acoustic imaging helps teams find them faster and with greater confidence.

See the Sound. Find the Fault - How Acoustic Imaging Works

FLIR Si-Series cameras use an array of sensitive microphones to detect ultrasonic sound. The camera overlays the acoustic source onto a visible image, showing the operator where the sound is coming from.

This allows users to locate compressed air leaks, gas leaks, partial discharge or mechanical faults faster than traditional manual inspection methods. FLIR states that the Si2-Series helps identify efficiency losses and potential failures up to 10 times faster than traditional methods, with minimal training.

1 Detect ultrasonic sound

Detect ultrasonic sound

2 Display the acoustic source visually

Display the acoustic source visually

3 Quantify, assess and report the issue

Quantify, assess and report the issue

FLIR Si-Series Product Range

The FLIR Si-Series range is designed for different inspection needs, from focused compressed air leak detection through to advanced multi-application acoustic imaging and hazardous-location inspection.

MODEL BEST FOR MAIN APPLICATIONS IDEAL USER

Entry-level leak detection

Compressed air leak detection

Maintenance teams wanting a focused, practical leak detection camera

Advanced industrial leak and mechanical fault detection

Compressed air leaks, gas leaks, bearing/mechanical faults

Industrial plants, factories, mines and reliability teams

Electrical partial discharge detection

PD detection, classification and severity assessment

Utilities, substations, electrical contractors and high-voltage teams

Full multi-application acoustic imaging

Leaks, gas leaks, mechanical faults and partial discharge

Larger sites needing one camera across departments

Hazardous-location leak and mechanical fault detection

Toxic/flammable gas leaks, compressed air/gas leaks, mechanical faults

Petrochemical, oil & gas, processing, dust-risk and hazardous environments

Hazardous-location all-in-one acoustic imaging

Gas leaks, compressed air leaks, mechanical faults and partial discharge

High-risk industrial sites needing maximum capability in hazardous zones

A practical acoustic imaging camera for teams focused on compressed air efficiency.

The FLIR Si1-LD is designed for locating and quantifying pressurised leaks in compressed air systems. It is a strong entry point for maintenance teams that want to move away from manual leak detection and start using acoustic imaging to find leaks faster. The Si1-LD is best suited to facilities where the primary requirement is compressed air leak detection rather than partial discharge or multi-application condition monitoring.

KEY BENEFITS

BEST-FIT APPLICATIONS

Focused compressed air leak detection

Helps locate and quantify leaks

Suitable for noisy industrial environments

Practical option for maintenance teams

Good entry point into acoustic imaging

Useful for energy-saving programmes

Manufacturing plants

Workshops

Compressor rooms

Food and beverage facilities

General maintenance departments

Energy efficiency surveys

For industrial teams that need stronger leak detection and mechanical condition monitoring capability.

The FLIR Si2-LD is designed to detect and reduce compressed air and specialty gas leaks, helping facilities reduce costs linked to leaks. It also identifies mechanical faults such as bearing issues, supporting preventative maintenance and downtime reduction. FLIR also states that the Si2-LD can identify and quantify compressed air and specific gas leaks from up to 200 m away.

KEY BENEFITS

Compressed air leak detection

Specialty gas leak detection

Mechanical fault detection

Bearing fault analysis

Leak quantification and cost analysis

Strong option for reliability and maintenance teams

BEST-FIT APPLICATIONS

Manufacturing plants

Mines and mineral processing facilities

Heavy industry

Utilities

Compressor networks

Mechanical maintenance programmes

Detect, locate, classify and assess partial discharge from a safer working distance.

The FLIR Si2-PD is designed for electrical partial discharge detection and response. FLIR states that the Si2-PD detects, locates, classifies and assesses PD faults from up to 200 m away, while identifying PD issues significantly smaller than previously possible. This makes the Si2-PD well suited to electrical maintenance teams, high-voltage contractors, substations, utilities, mines and industrial sites where electrical reliability is critical.

KEY BENEFITS

Partial discharge detection

PD classification

On-camera and software-based severity assessment

Safer inspection from a distance

Useful for high-voltage assets

Supports electrical maintenance planning

BEST-FIT APPLICATIONS

Substations

Switchyards

Transformers

High-voltage electrical assets

Utilities

Mines and industrial electrical networks

FLIR Si2-Pro | The Complete Multi-Application Acoustic Imaging Camera

Leak detection, mechanical fault detection and partial discharge detection in one advanced acoustic imaging camera.

The FLIR Si2-Pro is the best standard-range option for teams that want one acoustic imaging camera for multiple applications. It supports compressed air and gas leak detection, mechanical bearing issue detection and partial discharge detection. FLIR positions the Si2-Pro as a solution for lowering costs associated with mechanical bearing issues, partial discharge and compressed air or gas leaks. This model is ideal for larger industrial users where maintenance, electrical and reliability teams may share one camera across different inspection tasks.

KEY BENEFITS

Compressed air leak detection

Specialty gas leak detection

Mechanical fault detection

Bearing issue detection

Partial discharge detection

Best standard-range all-in-one model

BEST-FIT APPLICATIONS

Large manufacturing plants

Utilities

Mining operations

Multi-site maintenance teams

Reliability departments

Electrical and mechanical maintenance teams

Designed for hazardous gas and explosive dust environments.

The FLIR Si2x-LD is a hazardous-location acoustic imaging camera designed for use in hazardous gas and explosive dust environments. FLIR describes it as a solution for reducing leaks of toxic or flammable gases, improving safety and cutting expenses associated with compressed air or gas leaks. It also provides tools for lowering costs associated with mechanical bearing issues. This model is particularly important for sites where the inspection environment itself creates additional risk, such as petrochemical plants, oil and gas facilities, refineries, chemical processing plants, grain or dust-risk facilities and other hazardous industrial areas.

KEY BENEFITS

Hazardous-location acoustic imaging

Toxic and flammable gas leak detection

Compressed air and gas leak detection

Mechanical fault detection

Bearing issue detection

Built for high-risk industrial environments

BEST-FIT APPLICATIONS

Petrochemical facilities

Oil, gas and refineries

Hazardous-area maintenance teams

Chemical processing plants

Explosive dust environments

High-risk industrial zones

Gas leak, mechanical fault and partial discharge detection for hazardous environments.

The FLIR Si2x-Pro is the top model for hazardous-location acoustic imaging. FLIR describes it as a hazardous location acoustic imaging camera for gas leak, mechanical fault and partial discharge detection. It is designed for use in hazardous gas and explosive dust environments, where toxic or flammable gas leaks can create serious safety and operational risks. The Si2x-Pro can detect, locate and measure compressed air leaks, gas leaks and partial discharges from up to 200 m away. It also includes mechanical fault analysis for identifying bearing and other mechanical defects before they lead to overheating or equipment failure.

KEY BENEFITS

Toxic and flammable gas leak detection

Compressed air and gas leak detection

Mechanical fault detection

Bearing issue detection

Partial discharge detection

Best hazardous-location all-in-one model

BEST-FIT APPLICATIONS

Petrochemical facilities

Oil and gas facilities

Refineries

Hazardous dust environments

Chemical plants

High-voltage assets in hazardous zones

Safety-critical industrial sites

Which FLIR Si-Series Camera Should You Choose?

Requirement Recommended Model

Entry-level compressed air leak detection

Advanced compressed air and gas leak detection

Leak detection plus mechanical fault detection

Partial discharge detection only

Leaks, mechanical faults and partial discharge in one camera

FLIR Si2-Pro

Hazardous-location leak and mechanical fault detection

Hazardous-location leaks, mechanical faults and partial discharge

FLIR Si2x-Pro

Petrochemical, oil & gas, explosive dust or toxic gas environments

FLIR Si2x-LD or Si2x-Pro

Shared use across electrical, mechanical and reliability teams

Standard Si2 or Hazardous-Location Si2x?

The standard FLIR Si2 models are ideal for most industrial, manufacturing, utility, mining and facility maintenance environments.

The FLIR Si2x models are intended for hazardous-location applications where toxic gas, flammable gas or explosive dust may be present. This makes them better suited for petrochemical, oil and gas, refinery, chemical processing and other high-risk environments.

Choose FLIR Si2 models if:

Your site is a standard industrial environment

Your main concern is compressed air leakage

You need partial discharge detection in substations or electrical assets

You need mechanical fault detection

You do not require hazardous-location certification

Choose FLIR Si2x models if:

Your inspection area may include hazardous gas

Your site has explosive dust risk

You need to detect toxic or flammable gas leaks

You operate in petrochemical, oil & gas or chemical environments

Your safety requirements demand a hazardous-location model

Applications for FLIR Acoustic Imaging Cameras

Compressed Air Leak Detection

Compressed air leaks are common, costly and often difficult to hear in noisy plants. FLIR Si-Series cameras help teams locate and quantify leaks so that repairs can be prioritised

specialty_gas_leak_detection.png

Specialty Gas Leak Detection

For industrial gases and process environments, FLIR Si2 and Si2x models can help detect and measure gas leaks, improving safety and reducing losses.

Recommended: Si2-LD • Si2-Pro • Si2x-LD • Si2x-Pro
partial_discharge_detection.png

Partial Discharge Detection

Partial discharge can indicate insulation degradation in high-voltage electrical systems. Acoustic imaging helps electrical teams locate and assess PD activity from a safer distance.

Recommended: Si2-PD • Si2-Pro • Si2x-Pro
mechanical_fault_detection.png

Mechanical Fault Detection

Mechanical defects, including bearing-related issues, can be identified before they develop into costly failures. Acoustic imaging can support preventative maintenance and reliability programmes.

Recommended: Si2-LD • Si2-Pro • Si2x-LD • Si2x-Pro
hazardous_location_inspection.png

Hazardous-Location Inspection

In hazardous gas or explosive dust environments, the Si2x models provide acoustic imaging capability for high-risk industrial sites.

 

Recommended: Si2x-LD • Si2x-Pro
hidden_intermittent_issues.png

Hidden & Intermittent Issues

Many leaks and faults are difficult to detect because they are hidden, intermittent or masked by background noise. Acoustic imaging helps teams identify these issues faster and with greater confidence.

Recommended: Si1-LD • Si2-LD • Si2-Pro • Si2x-LD • Si2x-Pro

Industries That Benefit from FLIR Si-Series Acoustic Cameras

Manufacturing

Manufacturing

Find compressed air leaks on production lines, pneumatic equipment, hoses, valves, compressors and fittings.

Recommended: Si1-LD • Si2-LD • Si2-Pro
Mining and Heavy Industry

Mining and Heavy Industry

Support compressed air leak detection, electrical inspections, mechanical reliability and preventative maintenance across industrial environments.

Recommended: Si2-LD • Si2-PD • Si2-Pro
Utilities and Substations

Utilities and Substations

Detect partial discharge in high-voltage equipment, substations and electrical networks, while supporting safer asset reliability inspections.

Recommended: Si2-PD • Si2-Pro
Petrochemical, Oil & Gas and Chemical Processing

Petrochemical, Oil & Gas and Chemical Processing

Detect toxic or flammable gas leaks and mechanical faults in hazardous gas, explosive dust and high-risk process environments.

Recommended: Si2X-LD • Si2X-Pro
Food and Beverage

Food and Beverage

Reduce compressed air losses and support energy efficiency across production facilities.

Recommended: Si1-LD • Si2-LD • SI2-Pro
Facilities and Data Centres

Facilities and Data Centres

Support proactive maintenance, compressed air leak detection and asset reliability.

Recommended: Si1-LD • Si2-LD • Si2-Pro

Turn Invisible Leaks Into Measurable Savings

One of the strongest reasons to invest in acoustic imaging is that many findings can be linked directly to cost savings. Compressed air and gas leaks can be located, measured and prioritised so maintenance teams know which issues to repair first.

FLIR acoustic imaging cameras help teams build a more proactive maintenance programme by identifying faults before they become more expensive failures.

Help Me Choose the Right FLIR Acoustic Camera

The FLIR Si-Series range is designed for different inspection needs, from focused compressed air leak detection through to advanced multi-application acoustic imaging and hazardous-location inspection.

Choose the FLIR Si1-LD if:

Your main application is compressed air leak detection, you want an entry-level acoustic imaging camera, and you do not need PD detection or hazardous-location capability.

You need stronger leak detection capability, want compressed air and gas leak detection, also require mechanical fault detection, and your site is a standard industrial environment.

Your main application is partial discharge detection, you inspect high-voltage electrical assets, need PD classification and severity assessment, and do not need leak or mechanical fault detection as your primary use.

You want one standard industrial camera for multiple applications, need leak, mechanical and PD detection, may share one unit between maintenance and electrical teams, and want the most capable standard Si2 model.

Your site includes hazardous gas or explosive dust environments, you need leak detection in a hazardous-location model, want gas leak and mechanical fault detection, and do not need partial discharge detection.

You need hazardous-location acoustic imaging, want gas leak, mechanical fault and partial discharge detection, your site is petrochemical, oil & gas, chemical, refinery or dust-risk related, and you want the most capable hazardous-location model.

More Than a Camera - Local Product Guidance and Support

Choosing the correct FLIR Si-Series camera depends on your application, inspection environment, safety requirements and reporting needs. GoThermal helps customers select the correct model and understand how acoustic imaging can fit into their maintenance or condition monitoring programme.

Product Selection

We help match the correct FLIR Si-Series model to your site, application and budget.

Demonstrations

We can arrange suitable. demonstrations for industrial, electrical, utility and maintenance applications.

Training and Onboarding

We help your team understand camera operation, interpretation and reporting workflows.

Inspection Services

If you are not ready to purchase a camera, ask GoThermal about acoustic, thermal and condition monitoring inspection services.

Hazardous-Location Guidance

For petrochemical, oil & gas, chemical or dust-risk environments, we can help you determine whether a Si2x model is the right direction.

Replacing an older FLIR Si124 acoustic camera?

If you previously used or considered the FLIR Si124 range, the newer FLIR Si-Series gives you a clearer choice depending on your application.

Older Requirement Recommended New Model

Compressed air leak detection

Si1-LD or Si2-LD

Advanced leak detection

Leak detection plus mechanical fault detection

Partial discharge detection

Full leak, mechanical and PD capability

Hazardous-location leak detection

Hazardous-location all-in-one capability

FLIR Si-Series Acoustic Imaging FAQs

What is an acoustic imaging camera?

An acoustic imaging camera detects ultrasonic sound and displays the source visually on the camera screen. This helps users locate leaks, discharge or mechanical faults that are difficult to hear or see.

Which FLIR Si-Series camera is best for compressed air leak detection?

For focused compressed air leak detection, the FLIR Si1-LD is a practical entry-level option. For more advanced leak detection and mechanical fault detection, the FLIR Si2-LD is a stronger industrial option.

Which FLIR camera detects partial discharge?

The FLIR Si2-PD is designed for partial discharge detection. The FLIR Si2-Pro also includes partial discharge detection, along with leak and mechanical fault detection.

What is the difference between Si2 and Si2x?

The Si2 models are standard industrial acoustic imaging cameras. The Si2x models are hazardous-location models designed for hazardous gas and explosive dust environments.

Which model should I choose for hazardous areas?

For hazardous-location leak and mechanical fault detection, choose the FLIR Si2x-LD. For hazardous-location leak, mechanical fault and partial discharge detection, choose the FLIR Si2x-Pro.

Can one FLIR acoustic camera detect leaks, mechanical faults and partial discharge?

Yes. The FLIR Si2-Pro is the standard industrial all-in-one option. The FLIR Si2x-Pro is the hazardous-location all-in-one option.

Can GoThermal demonstrate the FLIR Si-Series cameras?

Yes. GoThermal can assist with product guidance and demonstrations for suitable industrial, electrical, utility, mining and hazardous-location applications in South Africa.

GET A QUOTE

Need Help Choosing the Right FLIR Si-Series Acoustic Camera?

Whether your priority is compressed air efficiency, gas leak detection, partial discharge, mechanical fault detection or hazardous-location inspection, GoThermal can help you choose the correct FLIR acoustic imaging camera for your application.

Please complete the form below to submit your quote request.