Our guide supports you in selecting the right thermal imaging device for your needs.
What Is a Thermal Imaging Device?
A thermal imaging device makes infrared radiation—normally invisible to the human eye—visible. It allows for the measurement of surface temperatures on objects using a non-contact method. Thermal imaging cameras or infrared thermometers are used to detect hotspots that can lead to failure in electrical or mechanical systems. For example, electrical panels and motor control centers are frequently inspected using thermal cameras. Early detection of problem areas can prevent production downtime and save costs. The measurement technology converts invisible infrared radiation into electrical signals.
The range of available thermal imaging cameras varies from low-cost, user-friendly devices to highly specialized HD models for scientific research. This ensures the right solution for every requirement.
Isolated parameters like temperature, rotation speed, sound levels, and illumination usually require dedicated instruments for accurate measurement.
At dataTec, we help you choose the right thermal imaging device. Our experts provide independent, non-binding advice. Ask us for a recommendation via our contact form or give us a call—we’ll help you make the right choice for your business.
Applications of Thermal Imaging
Thermal imaging technology can be used in a wide range of sectors. It’s commonly applied in automotive diagnostics, building inspections, and electrical system monitoring. Heat loss and water damage can also be detected using thermal imaging.
Thermal imaging plays an important role in infection control. Thermal cameras are used to detect elevated body temperatures as potential indicators of viral infections. They help break infection chains by identifying individuals with fever quickly and without contact.
Active and Passive Thermal Imaging
In active thermal imaging, thermal impulses are actively applied to the measurement object—usually just a few tenths of a degree Celsius. The heat penetrates the object. Any irregularity in heat conduction results in longer surface warmth, which is captured by the camera.
Passive thermal imaging does not require an external heat source. It measures the natural temperature distribution of an object’s surface.
Applications for Active Thermal Imaging
Used to detect bonding issues, cracks, delaminations, air pockets, or corrosion. It’s also useful for assessing welds, adhesive joints, and soldered connections.
Applications for Passive Thermal Imaging
Used in quality control in plastics industries, such as automotive, electronics, and healthcare. Also applied in construction to detect thermal bridges.
Types and Designs of Thermal Imaging Devices
- Infrared thermal imaging
- Thermal cameras for electrical and mechanical systems
- Devices for electronics, research, and development
- Devices for electrical testing and materials analysis
- Building thermography
- Smartphone-compatible thermal cameras
- Videoscopes and endoscopes
- Infrared thermometers
- Thermo-hygrometers
- Pyrometers
- Temperature probes
- Pistol-grip thermal cameras
- Interchangeable lenses for thermal cameras
- Integrated systems with thermal imaging
- Thermal monitoring over time
What Are the Advantages of an Infrared Camera?
Easy operation, full scene representation, clear visualization of problems, and data storage. The camera pinpoints exactly what needs repair.
Thermographic Testing and Standards
Thermal testing of electrical systems is mandatory under DIN 54191 and is regularly conducted to ensure fire safety and functionality in industrial settings. Cameras quickly detect issues. If a system passes, it receives a certified inspection label indicating the next due date. Inspection frequency depends on the system’s size and complexity.
Training under DIN 54162 is relevant for energy consultants, construction defect assessors, architects, engineers, contractors, building biologists, and insurance professionals. The course covers regulations, measurement principles, IR camera operation, image analysis, and documentation practices.
Certification is issued by TÜV, confirming qualification as a "Thermography Specialist (TÜV) according to DIN 54162 and EN 473."
FAQ: Buying a Thermal Imaging Device
These factors are essential when buying a thermal imaging device. Consider the following:
- How do thermal cameras differ from infrared cameras?
Both capture infrared intensity and display it as an image. While thermal cameras focus on visualizing people or objects, infrared cameras assign temperatures to those visuals.
- What is the depth penetration of IR temperature measurement?
It measures directly on the surface—there is virtually no depth effect.
- Do weather conditions affect thermal imaging?
Yes. Avoid sun exposure on building walls during or before measurement.
- What image format is used for reports?
Images are saved in JPEG format and sent via email in ZIP archives.
- When is the best time for thermal inspection?
Ideally at night to avoid sunlight interference.
Which Manufacturers Produce Thermal Imaging Equipment?
- Teledyne FLIR
- Fluke
- BEHA
- Chauvin Arnoux
These are among the most recognized manufacturers in the thermal imaging industry.
Do I Need Software or Special Programs?
Depending on the device’s design and use case, software or adapters may be required. Our experts can help you find the right accessories.
Selection Criteria for Thermal Cameras
- Application Area: Use case and environment
- Temperature Range: Standard range spans from -40°C to +2000°C depending on the model
- Detector Resolution: Ranges from 80×60 to 1024×768 pixels, or even 2048×1536 with software
- Accuracy: Typically ±1°C or ±1%
- Thermal Sensitivity: From <0.02°C (20 mK) to 1.5°C depending on model
- Field of View: Lenses range from 12° to 45°, often with swappable options
Overlaying real images onto thermal images enhances spatial awareness, especially on PCBs.
Advanced software enables automatic measurement analysis and long-term data recording, including temperature profiles and cross-sectional evaluations.
Avoiding Measurement Errors
- Blurry Images: Unfocused images can lead to incorrect readings. Not all cameras have focus capability—keep the correct distance.
- Incorrect Measurement Range: Always choose a temperature range suitable for the expected radiation intensity.
- External Influences: Consider solar heat or reflections, which can distort data.
- Lack of Knowledge: Operating thermal cameras requires proper training. Consider attending thermography seminars to improve your accuracy.
dataTec offers a variety of theory and hands-on seminars in thermal imaging to teach image interpretation, measurement documentation, and system handling.
