How does an infrared pyrometer differ from a handheld infrared thermometer in semiconductor process control?

A process pyrometer is designed for continuous, closed-loop temperature control -with analog or digital outputs for integration into a control system, fast response times calibrated over a defined range, and robust housing for permanent installation in a process environment. A handheld infrared thermometer is a portable spot-check tool without control outputs. All Process Sensors IR pyrometers provide 4–20 mA or digital outputs for direct integration with process control, with response times ranging from less than 1 ms to 100 s, depending on the model.