What temperature range can Thermal Cameras measure?

• A. -40 F to 1022 F
• B. -100 F to 500 F
• C. 0 F to 500 F
• D. 32 F to 212 F

Answer: (A)

Thermal cameras report surface temperatures within a defined measurement range set by the sensor and optics. This range tells you the temperatures you can get accurate readings for, not just what the image shows. A common specification for many cameras is -40 F to 1022 F (about -40 C to 550 C), which covers very cold surfaces as well as hot equipment you'll encounter in inspections. The lower bound around -40 F is a practical limit for typical uncooled detectors, and the upper bound around 1022 F is high enough to measure hot machinery, electrical components, and exhaust without losing reliability. Other options miss either the cold end, the hot end, or both, making them impractical for broad-use thermography.