Calibration And Adjustments - Thermo Scientific TSX Series Installation And Operation Manual

Chart Recorder (Optional)
10.4 Calibration and
Adjustments
34 TSX -20°C Laboratory and Enzyme Freezers
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 temperature with a calibrated temperature
monitor.
3. Compare the recorder temperature to the solution temperature. If
necessary, adjust the recorder by pressing the left and right chart buttons
(#1 and #2 from Figure 14) for approximately 5 seconds.
Note The stylus does not begin to move until the button is held for
approximately 5 seconds.
Thermo Scientific