Characteristics of Matsushita Carbon Resistors as the Thermometer for Use between 0.4K and 4.2K
Masahiko GOTOH, Mitsuru Awano · TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) · 1973
Matsushita radio carbon resistors (grade ERC-18GK nominal resistance 100Ω and wattage 1/8) are found to have useful characteristics for the thermometer in a temperature range between 0.4K and 4.2K. Their characteristics are reproducible to within 1.5% in average after thermal cycling between room temperature and 1K. Temperatures calculated by the formula T=(AlogR+B/logR+C)-1 are within 0.01K from that of measured temperatures in the region 0.4K-4.2K. The sensitivity is about 300Ω/deg. at 0.4K.