?:definition
|
-
Temperature controllers designed to keep temperatures in a container between preestablished limits well below the freezing point of water (i.e., cryogenic temperatures, below -130 degrees Celsius [-202 degrees Fahrenheit]); typically from -150 to -200 degrees Celsius (-238 to -328 degrees Fahrenheit). These controllers usually include temperature sensors, thermometers, an electronic unit that may include microprocessors, a display, and connecting cables; the devices may also include alarms. Cryogenic temperature controllers are used mainly in healthcare facilities for containers used for preservation of biological tissues (e.g., embryos, bone), in cryosurgical units, and in blood bank cryogenic freezers (e.g., to store red blood cells).
|