Temperature sensors are designed for measurement of thermal variations in soils, structures, and fluids, providing essential data for geotechnical analysis and thermal compensation of instrumental measurements. They are available in multiple configurations, including submersible versions, sensors designed to be embedded in concrete, installed in soil, surface-contact sensors, and sensors for mounting on metal structures or reinforced concrete. The sensors are housed in high-strength stainless steel enclosures with IP68 protection for permanent installations, even in harsh environments.