How do you verify the accuracy of a calibration curve for a pressure transmitter?

How do you verify the accuracy of a calibration curve for a pressure transmitter?

• A. Only check at the zero point.
• B. Compare measured values to known calibration sources across range; verify linearity, zero, span; plot to ensure slope matches.
• C. Compare to random values without reference.
• D. Assume the slope is fixed and cannot be verified.

Answer: (B)