Since 1967, Scientific Instruments has been a leader in cryogenic temperature measurement for various applications. The initial product from Scientific Instruments was the world premiere of the Germanium Resistance Thermometer (GRT). The GRT was utilized during the Apollo missions, specifically on the Saturn V rocket and Lunar Extraction Module (LEM).
With the growing cryogenic industry, Scientific Instruments expanded its product line to include several new cryogenic temperature sensor and monitoring devices. These advances include the introduction of the Silicon Diodes in the 1980’s, as well as Ruthenium oxide (RuO) thick film resistors, Platinum Resistance Thermometers (PRT), and thermocouples.