Re-Calibration of Temperature Sensors Using Phase Change Cells

calibration of temperature sensors. It can be used on-board flight systems to recalibrate temperature sensors that monitor internal blackbodies and are used to maintain calibration of space sensors. The Mini-Cell On-Orbit Temperature Recalibration (MOTR) cells are currently progressing on two fronts with a goal to create a space qualified operational package that is easily installed into a blackbody. The first thrust is to characterize the cells in cryogenic high vacuum conditions to prove the operational ability in an environment that is similar to space. With this characterization completed, a cell will be installed in one of SDL’s working blackbodies, which will provide an on-going check of the blackbody’s calibration. It will also demonstrate repeatability of the cells over an extended period of time. The second thrust is to flight qualify the MOTR cells in a space environment. G.E. Bingham, D.K. Scott, T.S. Topham; Space Dynamics Laboratory, Logan, UT gail.bingham@sdl.usu.edu Re-Calibration of Temperature Sensors Using Phase-Change Cells