You searched for: “thermograph
1. A self-recording thermometer that measures both air and soil temperature on a continuous display known as a thermogram.
2. A photographic record of the amount of heat radiated from the surface of a body, revealing "hot spots" of potential tumors or other disorders.
3. An instrument consisting of a thermometer, an inked stylus, and a chart for the continuous recording of the ambient or surrounding-air temperature.
4. Essentially, a self-recording thermometer that continuously records the temperature on a chart.
Word Entries containing the term: “thermograph
soil thermograph
An instrument that creates a photographic representation of the heat of a designated underground area.

It consists of a sensing element that transmits data to a remote recording device.