The 3051C’s Coplanar platform enables three measurement types (differential, gauge, absolute) with the same hardware and manifold by changing only the sensor capsule, simplifying spare parts. HART 7 digital communication overlays process variable, engineering units, and diagnostic codes on the existing 4-20 mA loop without additional wiring. Advanced Diagnostics option continuously checks for plugged impulse lines and membrane fouling, warning operators before the measurement fails completely. WirelessHART model transmits wirelessly to a multiplexer for installation in locations impractical for cable runs. Accuracy of ±0.04% of span with reference stability over 10 years reduces calibration frequency and maintenance cost.