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A thermal imager may detect a heat source at one pixel, but temperature assessment and object recognition require greater pixel coverage. D:S ratio helps determine whether a target can meet that requirement at a given distance.

Thermal imaging helps inspectors identify temperature rise associated with electrical resistance in high-voltage equipment without interrupting operation. The Fotric 348A combines 640 × 480 resolution with interchangeable wide-angle and telephoto lens options for different inspection distances.

The "Wires & Cables 2026" exhibition will take place from November 25–27, 2026, at the Vietnam Exhibition Center (VEC), bringing together over 200 exhibitors from more than 20 countries across an exhibition space of over 10,000 square meters.

Discrepancies when measuring the surface temperature of metals using an infrared thermometer primarily stem from low emissivity, reflected radiation from the environment, and unsuitable measurement conditions.

For PCB research, thermal imaging can capture temperature information across an entire board without contact. FOTRIC 600 R&D is described with up to 307,200 temperature points per image, radiometric video up to 30 Hz, and AnalyzIR software for pixel-level analysis.