Rosemount 3051CD3A22 Transmitter

Core Performance & Industrial Application

The Emerson Rosemount 3051CD3A22 is a 3051C coplanar differential pressure transmitter with range code 3 (±1000 inH2O / ±2.48 bar).

Reference accuracy 0.075% of span with 100:1 turndown and 5-year stability of 0.125% URL, suitable for flow, level and DP measurement.

Two-wire 4-20 mA HART® output superimposes digital process variables on the loop, selectable linear or square-root flow.

The coplanar platform integrates manifold, diaphragm seal and primary element mounting in one footprint.

It operates on 10.5-55 VDC loop power with no load and withstands 3626 psig overpressure (range 2-5).

It is used as spare replacement in DP flow, tank level and filter differential monitoring loops.

Technical Specifications

▶ Product type: Coplanar differential pressure transmitter

▶ Brand: Rosemount (Emerson)

▶ Model: 3051CD3A22 (3051C, code D = DP, range 3)

▶ Range: -1000 to +1000 inH2O (-2.48 to +2.48 bar); min span 10 inH2O

▶ Output: 4-20 mA HART® digital, linear or square-root selectable

▶ Reference accuracy: ±0.075% of span; total installed performance ±0.15% span

▶ Supply: 10.5-55 VDC; min loop resistance 250 Ω for HART

▶ Overpressure: 3626 psig (250 bar) range 2-5

▶ Fill: Silicone oil; wetted 316L SST diaphragm/body family

▶ Feature: HART PlantWeb diagnostics, local configuration, coplanar flange

▶ Operating temperature: Standard industrial class; confirm per nameplate

▶ Country of origin: USA

▶ Compliance: CE, UL, ATEX, SIL 2/3 (IEC 61508) certification

Industry Applications

Applied in DP flow (orifice/Annubar), tank level and filter/clogging differential pressure spare replacement.

Note: Confirm process connection, fill fluid, display and hazardous-area option against nameplate before ordering