T-362 4–58
2. Calibrate the three USDA probes by ice bathing the probes and performing the calibration function (see
Figure 4.10) with the DataLINE. Refer to the Ice Bath Preparation procedure. This calibration procedure
generates the probe offsets which are stored in the controller and applied to the USDA sensors for use in
generating sensor type reports.
Figure 4.10 DataCorder Probe Calibration Screen
3. Pre-cool the container to the treatment temperature or below.
4. Install the DataCORDER module battery pack (if not already installed).
5. Place the three probes. See USDA Treatment Manual for directions on placement of probes in fruit and
probe locations in container.
6. To initiate USDA recording, connect the personal computer and Enter ISO Trip header information (Figure
4.11) using the DataLINE software. Enter all fields along with a trip comment if desired.
Sensor 1 Place the first sensor, labeled USDA1, in a box at the top of the stack of the fruit
nearest to the air return intake.
Sensor 2 Place the second sensor, labeled USDA2, slightly aft of the middle of the container,
halfway between the top and bottom of the stack.
Sensor 3 Place the third sensor, labeled USDA3, one pallet stack in from the doors of the
container, halfway between the top and bottom of the stack.
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