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4-14 AutoXP Users Guide Thermo Fisher Scientific
HART
Input Calibration
The following inputs can be calibrated from the Diag/Service Menu:
•
Calibrate Differential Pressure Input [475 key sequence 1, 2, 4]
•
Calibrate Static Pressure Input [475 key sequence 1, 2, 5]
•
Calibrate RTD Temperature Input [475 key sequence 1, 2, 6]
In each case , a 1, 2 or 3 point calibration can be performed.
A DD method is automatically launched that will step the user through the
calibration procedure.
Common DD Calibration Method
With all 3 inputs, the calibration method/procedure is identical.
In this section we look at the calibration procedure for the RTD temperature input.
Both Differential Pressure and Pressure inputs will follow the same sequence:
1. After selection of the required input for calibration, a warning is provided to
remove the AutoXP MVT output from any automatic control.
Figure 24. Remove L oop from automatic control
2. Select the required number of calibration points.
Here we are selecting a 3 point calibration.
Figure 4-25. Select Number of Cal Points