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10.4 Calibration
Adjustment
Thermo Fisher Scientific
This recorder has been accurately calibrated at the factory and retains
calibration even during power interruptions. If required, however,
adjustments can be made as follows:
1. Run the unit continuously at the control setpoint temperature.
Continue steady operation for at least two hours to provide adequate
time for recorder response.
2. Measure cabinet center solution temperature with a calibrated
temperature monitor.
3. Compare the recorder temperature to the solution temperature. If
necessary, adjust the recorder by pressing the left (#1) or right (#2) chart
buttons for five seconds.
Note : The stylus does not begin to move until the button is held for five
seconds.
Chart Recorders
Laboratory Freezers 19
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