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Calibration
Calibration notes
• The 3250 will retain its previous calibration data until it completes a
recalibration and the display reads Calibration Complete.
• Although it is possible for the 3250 to detect certain gross
calibration errors such as reversal of the standards, it remains the
responsibility of the operator to be sure to introduce accurate
standards of the specified freezing point values.
• Pressing STOP during recalibration will cancel the current
calibration test but allow calibration to be resumed with another
sample. Pressing STOP a second time will cancel recalibration and
retain the previous calibration.
• Good operating technique is as important during calibration as
during normal operation (see Repeatability Tips). If the calibration
test results are not acceptably repeated throughout the six tests
at each calibration level, the instrument will report Calibration out
of Range and the entire calibration procedure must be redone. If
the repeatability problem recurs despite good operating technique,
please call or write immediately for
Hot-Line service.
Note Pressing ENTER in Set Block Bin # or Set Sample Bin # will
erase calibration and force a full recalibration of the instrument.
Note If the instrument has lost all previous calibration data, or you
have reset the block or sample bin numbers, you will see the
message Recalibration Needed. Pay close attention to the
displayed prompts. You will be requested to run a slightly
different sequence than described above.
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