The contact thermometers are precision instruments that measure temperature through direct physical contact of a sensor (probe) with the object under test. Unlike infrared thermometers, contact thermometers provide the highest possible accuracy, as they eliminate errors due to surface reflectivity.
- Sensor Technology: They typically use thermocouples (Thermocouples type K, J, T) for a wide temperature range or Pt100 (RTD) sensors for laboratory-accuracy measurements.
- Types of Sensors (Probes):Penetration: With a sharp tip for food, semi-fluid materials, or soil.Surface: With a flat head for measurement on plates, molds, or electronic components.Immersion: For liquids and chemical solutions.Air: For fast temperature measurement in air-conditioning systems.
- Advantages: High repeatability, ability to measure inside a body (not only on the surface), and excellent durability in industrial environments.