Cryogenic Temperature Sensors
Princeton Measurements Corporation (Lake Shore Cryotronics, Inc.)
are the best choice for general-purpose cryogenic use. The cryogenic temperature sensors are interchangeable (they follow a standard curve) and are available in robust mounting packages and probes. Silicon Diodes are easy and inexpensive to instrument, and are used in a wide variety of cryogenic applications, such as cryo-coolers, laboratory cryogenics, cryo-gas production, and space satellites.