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The working of thermal imaging cameras includes the following principles and features:

Infrared Detection:

Objects emit Infrared Radiation proportional to their temperature. Thermal imaging infrared cameras capture this invisible radiation within certain wavelength ranges, usually around 8–14 µm.

Temperature Mapping:

Camera sensors (uncooled microbolometers or cooled photon detectors) measure infrared radiation. These readings are processed into images, showcasing hot and cold spots as colour-coded visuals.

Accuracy in Thermal Imaging Cameras is determined by factors like:

• Emissivity: The efficiency of the surface in emitting thermal energy that varies across materials.
• Detector Sensitivity: Determines the camera’s ability to detect temperature differences.
• Thermal Imaging Camera Range: The measurable temperature span is essential for applications in extreme environments.

Thermal imaging cameras offer diverse functions and features. Each type is optimised for distinct use cases, some of which include:

Hand-Held Thermal Imaging Cameras:

• Hand-held thermal imaging cameras are lightweight, portable, and ideal for on-site inspections. These devices provide real-time analysis of pipelines, motors, or machinery.
• They feature ergonomic designs for ease of use in extended field operations and offer adjustable settings for emissivity and temperature range to ensure accurate diagnostics.
• They can detect overheating in electrical systems, identify insulation faults in mechanical systems and locate leaks in pipelines.

Drone-Mounted Thermal Imaging Cameras:

• These systems, integrated with Unmanned Aerial Vehicles (UAVs), extend the thermal imaging camera range to remote and hard-to-reach areas. High-resolution thermal imaging infrared camera data can hence be captured from elevated or dangerous locations.
• These devices are equipped with stabilised mounts for precise imaging in real-time. It also allows for wide-area scanning, crucial for infrastructure like refineries, offshore rigs, and tall structures.
• They can be used to monitor flaring operations in Oil and Gas Fields, conduct aerial surveys for pipeline integrity and identify leaks or hotspots in solar farms and industrial rooftops.

High-Resolution Infrared Thermal Imaging Cameras:

• For applications requiring precision and clarity, the high resolution helps detect minute temperature variations. The cooled sensors provide enhanced sensitivity in high-stakes environments.
• Highly detailed thermal imaging camera images can be obtained as these devices support advanced imaging features, such as image fusion and dynamic range adjustment.
• They aid in inspecting subsea pipelines and infrastructure for corrosion or cracks, monitoring turbines and engines for thermal anomalies and conducting precision diagnostics in laboratories or high-tech manufacturing units.
• Thermal imaging camera installers recommend matching camera specifications with the operational environment to maximise efficiency. Drone-mounted and high-resolution cameras are preferred for leak detection and fault identification.