In the plastics industry, infrared thermometers are used to avoid product contamination, measure dynamic objects and measure high-temperature plastics. As the blown film is ejected, temperature measurements to adjust for heating and cooling can help maintain the integrity of the plastic's tension and its thickness. During the ejection process of the thrown film, the sensor helps control the temperature to ensure the thickness and uniformity of the product. As the sheet is being extruded, sensors allow the operator to adjust the extinguishing of the heater and cold roll to maintain product quality.

In the petrochemical industry, refineries use temperature display systems as part of routine preventive maintenance procedures, including monitoring furnace processes and confirming thermocouple readings. In furnace process inspection, infrared monitors are used to detect the proportion of carbon accumulated in the heating surface tubes. This build-up, known as coking, results in higher firing rates in the furnace and also increases tube temperatures. This high temperature condition will reduce the life of the tube. Because this coking will prevent the product from absorbing the heat of the tube evenly. When using an infrared thermometer, we will find that the surface temperature of the pipe in the intersection area is often higher than the surface temperature of the pipe in other areas.