At distances greater than 5–10 meters, atmospheric absorption reduces the signal reaching the detector. The camera’s internal compensation assumes a clear, dry atmosphere, leading to underestimation of temperature.

A 14-bit ADC yields 16,384 digital levels. If the temperature range is set to -20°C to +120°C (140°C span), each count ≈ 0.0085°C—negligible. But if the span widens to 1000°C, quantization error becomes significant.

Use a spectroradiometer to characterize ε(λ) or switch to a short-wave camera (0.9–1.7 µm) for low-emissivity metals.

To ensure your meets industry expectations, reference these standards:

Perform automatic gain correction (AGC) or external blackbody referencing every 15 minutes.

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