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Calibration
Some sensors in the freeze dryer can be calibrated. This process should be done by a
qualified technician or metrologist with reference sensors that are known with certainty.
An external reference sensor must be placed at the same measurement point, as close
as physically possible, as the sensor is being calibrated. The collector temperature
sensor has its own reference thermocouple, type T, built into the sensor. The
thermocouple is a brown wire that is coiled inside the housing of the freeze dryer and
can be accessed by removing the charcoal front panel. A thermocouple meter can be
used to read the thermocouple value as a reference value.
