Thermoscale

The extent of color change depends on the temperature of the heat source and the contact time. Even at the same temperature, a shorter contact time produces paler colors with a blue tint and the increasing contact time makes the colors deeper with a red tint. Note that the color change is also influenced by factors such as the type of material on the opposite side (i.e., the non-heat source side), thermal characteristics, contact pressure and air flow, so calibration should be performed under actual usage conditions.

Thermoscale sheets turn black when they come in contact with a heat source. A short contact time produces pale colors. As the contact time increases (at the same temperature), the colors become deeper. Note that the color change is also influenced by factors such as the type of material on the opposite side (i.e., the non-heat source side), thermal characteristics, contact pressure and air flow, so calibration should be performed under actual usage conditions.