Thermal imaging cameras:
Making temperature distributions visible
Thermal imaging cameras make temperature distributions on surfaces visible as a thermogram and help quickly locate anomalies such as thermal bridges, hotspots in electrical systems, or irregularities in components. For reliable results, it is essential to know the appropriate basics, application rules, and technology criteria, and to consistently apply them to your own measurement task.
Topics at a glance
Here you will find the most important topics related to thermal imaging cameras. Choose the entry point that matches your question.
Basics
This section covers the key basics that are essential for understandable and reproducible thermography.
How thermal imaging cameras measure (surface, not "through walls")
Which parameters influence measured values (e.g. emissivity and reflected temperature)
How object size, distance, and IFOV cause or avoid typical measurement errors
Areas of application
This section classifies typical use cases and shows what matters in practice for each application.
Building thermography (thermal bridges, leaks, mould risk)
Electrical inspection (switch cabinets, connections, load)
Maintenance, HVAC/R, and photovoltaics
Technology
This section covers the technical basics and key figures that are truly relevant to the measurement task.
Resolution, NETD, focus, and field of view (FOV)
Optics/lenses and their influence on measurement capability
Software, app, and reporting for recurring inspections
Measuring instruments & selection
This section provides a structured selection logic: from the measurement task to the right device and workflow.
Which camera suits the object size and measuring distance (IFOV as a gate)
Which functions improve comparability (scale, focus, reporting)
How to combine requirements from application and technology
References & downloads
This section brings together practical resources such as guides, pocket guides, application examples, and references.
Practical guides by application
Thermography pocket guide
Application examples and references (e.g. related to the testo 883)
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