Which sequence correctly describes the typical calibration steps for a differential pressure transmitter used in flow measurement?

• A. Apply ambient pressure, record output, adjust zero, adjust span, verify at several points, document results.
• B. Apply known differential pressures, record output, adjust zero at zero differential, adjust span at full-scale differential, verify at several points, and document results.
• C. Use a temperature reference instead of differential pressure.
• D. Calibrate at a single point only.

Answer: (B)