Honeywell UDC3200 - Restore Input Factory Calibration

Input Calibration
Step Operation Press Result
3
Calibrate 100 %
Function
FunctionFunction
You will see:
Check the Cold
Junction
Temperature
Function
FunctionFunction
The calculations for zero and span are now stored and you
will see:
Upper Display = The cold junction temperature at the rear
terminals
Lower Display = CJTEMP
The value in the upper display is in tenths of a degree. It is
the current reading of the temperature as measured at the
thermocouple terminals and recognized by the controller.
You can change this value, if it is in error, using the
or keys.
WARNING: The accuracy of the controller is directly
affected by the accuracy of this value. It is recommended
that this value not be changed under normal circumstances.
5
Exit the
Calibration Mode
Function
FunctionFunction
then
The controller stores the calibration constants and exits the
calibration mode.
Lower
Display
Lower
Display
Lower
Display
4
5.6 Restore Input Factory Calibration
Introduction
The factory calibration constants for all the input actuation types that can be used with
the controller are stored in its non-volatile memory. Thus, you can quickly restore the
“Factory Calibration” for a given input actuation type by simply changing the actuation
type to another type and then changing it back to the original type.
Refer to Table 5-10 Restore Factory Calibration for procedure
12/04 UDC3200 Universal Digital Controller Product Manual 141