The devices measure temperature without contact by employing pyrometric sensors which detect thermal radiation in the 8-14 μm wavelength band. Their industrial models (Temperature range: -30°C to 1500°C) have an accuracy of ±2% or best ±2°C, and better result when laser sighting is used for accurate spot positioning (Spot size ratio: 50:1) Focused on the supervisory control for furnaces surfaces, electrical panels, and rotating machines, these devices promote maintenance before failures are known by remote hotspot monitoring. Handheld devices which can be set for emissivity (0.1-1.0) are suitable to a wide range of materials such as plastics and metals.
