Table 6-5 Input #1 Calibration Procedure - Honeywell UDC3300 Product Manual

6.5 Input #1 Calibration Procedure,
Procedure, continued
Table 6-5 Input #1 Calibration Procedure, Continued
Step Description
3 Calibrate 100%
4
Check the Cold Junction
Temperature
ATTENTION
The accuracy of the
controller is directly
affected by the accuracy of
this value. Change this
value only if the zero and
span calibration
procedures did not bring
the controller within the
specified accuracy
requirements.
5 Exit the Calibration Mode
68
Press
You will see:
Upper Display
FUNCTION
APPLY
Lower Display
IN1 SPAN
Adjust your calibration device to an output signal equal to
the 100% range value for your particular input sensor. See
Table 6-1 for Voltage or Resistance equivalents.
Wait 15 seconds, and
The calculations for zero and span are now stored and
you will see:
FUNCTION
Upper Display
Lower Display
C-J TEMP
The value in the upper display is in the 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 s or t key.
ATTENTION
precision resistor, calibrate the cold junction as
77°F(25°C).
The controller will store the calibration constants and exit
calibration mode.
FUNCTION
UDC3300 Limit Controller Product Manual
Continued
Action
If...
you are calibrating a
Thermocouple input
you are calibrating other
than a Thermocouple input
The cold junction
temperature at the
rear terminals
When calibrating T/C inputs using a
Then...
Go to step 4
Go to step 5
1/01