Methods and apparatus for process device calibration

An apparatus comprising:

• a memory;
• a processor coupled to the memory including instructions to cause the apparatus to:
• determine if a first position of a process control device is a partial stroke position of the process control device;
• in response to the first position being the partial stroke position, calculate a target output pressure based on configuration information;
• determine whether the target output pressure is equal to a feedback pressure corresponding to an output pressure output from the process control device;
• calculate a difference between the target output pressure and the feedback pressure;
• and
• change the output pressure by the difference.

A tangible computer readable storage medium comprising instructions to cause a machine to:

• determine if a first position of a process control device is a first end position;
• in response to the first position being the first end position, calculate a second end position of the process control device based on the first end position and configuration information;
• calculate a partial stroke zone of the process control device based on the first end position and the second end position;
• determine when a current position of the process control device is within the partial stroke zone;
• and
• when the current position is within the partial stroke zone, calculate an output bias based on a value indicative of a comparison of the current position to a position corresponding to a control signal.