The temperature measuring range of a pyrometer, infrared thermometer or infrared temperature sensor specifies the maximum temperature range in which the device measures.
If the temperature measuring range is 0-250°C, the pyrometer only measures within this temperature range. Temperature values outside this range are not measured or are displayed with an error message.
For a high temperature resolution, the narrowest possible measuring range should be selected. If the process temperature to be measured is 65°C-85°C, for example, a temperature measuring range of 0-100°C should be selected.
Some pyrometers/infrared temperature sensors can be set for different temperature measuring ranges, e.g. optionally to 0-100°C or 0-250°C, while other devices have a fixed temperature measuring range.
| Total measuring range, partially subdivided into different temperature measuring ranges | Spectal range | Field of application | Device name |
| -40°C to 1000°C | 8-14 µm | Measurement of paper, laminate, water, textiles, plastics, leather, tobacco, pharmaceuticals, chemicals, rubber, coal and asphalt | novasens 2050 |
| -20°C to 250°C | 8-14 µm | Measurement of paper, laminate, water, textiles, plastics, leather, tobacco, pharmaceuticals, chemicals, rubber, coal and asphalt | IR402 |
| -40°C to 100°C | 8-14 µm | Temperature control of food, pharmaceutical products, coal | IR602 |
| 45°C to 2000°C | 2,2 µm | Precise measurement of metals in the low temperature range |
IR702 |
| 100°C to 1800°C | 2,3 – 5,0 µm | Use in glass production, glass refinement, further processing | HighTemp520 |
| 200°C to 2400°C | 1,1 – 3,7 µm | Iron and steel production, forging processes, metal finishing processes | HighTemp530 |