Process Technology LUFRAN Instruction page 52

Heater Calibration Startup Procedure (Continued):
15) Compare the outlet temperature of the unit to the process setpoint.
If the outlet temperature is higher than the PROCESS SETPOINT, then decrease
the OFFSET VALUE by 1%.
If the outlet temperature is lower than the PROCESS SETPOINT, increase the
OFFSET VALUE by 1%.
16) Repeat steps 14-15 until the outlet temperature matches the PROCESS SETPOINT.
Once the unit outlet temperature matches the PROCESS SETPOINT the unit is
calibrated. Proceed to step 17.
17) Turn the HEATER CALIBRATION setting OFF. The image of the toggle switch will
change to indicate the calibration mode has been turned OFF.
M-43-01
Revision - Date: 08 – 04/06/15
The HEATER CALIBRATION setting must not
be turned on during normal heater operation.
The HEATER CALIBRATION mode will disable
the following control performance features:
 Overshoot compensation
 Boost deadband
 Error compensation
Failure to turn the HEATER CALIBRATION
setting off will result in poor temperature
control and may result in over-temperature
conditions.
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Lufran Single Outlet Manual