Rosemount 3051S Process Pressure Transmitter Unit

Module Feature

3051S is Rosemount high‑performance scalable SuperModule platform pressure transmitter family. It adopts advanced piezoresistive sensing technology, achieves up to 0.025% span accuracy and 200:1 turndown ratio, delivers 15‑year long‑term stabilityEmerson. Multiple communication options include wired 4‑20 mA HART, WirelessHART wireless protocol and FOUNDATION fieldbus. Built‑in intelligent diagnostics support plugged impulse line detection, loop integrity monitoring and process abnormality alarm. It can be combined with coplanar manifold, remote seal assembly and primary flow element. SIL2/3 safety certification, suitable for differential pressure, gage pressure, absolute pressure, flow and liquid‑level measurement in petrochemical, power, oil‑gas and heavy‑duty process plantsEmerson.

Working principle

Process pressure acts on isolating diaphragm and transfers fill‑fluid pressure to piezoresistive sensor chip. Sensor converts pressure variation into electrical signal. Onboard electronic module completes signal conditioning, temperature compensation and calculation. Measurement data is transmitted via 4‑20 mA analog superimposed HART digital signal, or via WirelessHART / FOUNDATION fieldbus digital bus. Local display shows real‑time value, alarm and diagnostic information.

Onboard components

SuperModule piezoresistive sensor assembly, isolating diaphragm and fill fluid, main electronic board, communication module, optional local LCD display, coplanar / in‑line process base, terminal block, aluminum alloy transmitter housing and sealing gaskets.

LED indicators

No independent LED indicator. Measured values, fault and diagnostic codes are displayed on local LCD screen. Status information can also be read by HART communicator, AMS software or DCS host system. Wireless version provides network status feedback via digital protocol.

Hardware self‑diagnosis

Plugged impulse‑line detection, sensor drift monitoring, loop circuit integrity check, over‑range alarm, read internal fault codes through HART / fieldbus, verify power supply and communication quality.

Programming software

Parameter configuration via Rosemount AMS Suite software, HART handheld communicator, FOUNDATION fieldbus host system. Supports range setup, damping adjustment, unit selection, diagnostic function enablement; local keypad also supports on‑site trimming.

Electrical & Process Parameters

Model:3051S Brand:Rosemount Device type:Scalable SuperModule Pressure Transmitter Communication:4‑20 mA HART, WirelessHART, FOUNDATION fieldbus Max turndown ratio:200:1 Accuracy:Up to 0.025% of span Function:Differential / gage / absolute pressure, flow and level process measurement

Mechanical & Structure

Mounting:Coplanar manifold mount, in‑line direct mount, bracket wall mount Protection class:IP66 / NEMA 4X Housing:Aluminum alloy explosion‑proof housing

Environmental

Operating temperature:-40℃ ~ +85℃ Storage temperature:-55℃ ~ +120℃ Ambient humidity:0~100% non‑condensing Certification:SIL2/3 IEC61508, hazardous area approvals, NACE compliant Status: Rosemount original 3051S series scalable pressure transmitter

Installation

Install transmitter by bracket or couple with coplanar manifold / remote seal assembly. Use shielded two‑wire cable for wired HART version; wireless unit installs with replaceable power module. Complete impulse piping and pressure tightness test. Perform zero‑point trim, configure measuring range and diagnostic functions, validate output and communication status.

Interface

High‑low pressure process ports, electrical terminal compartment, optional local display and operation keypad, HART / fieldbus digital communication interface.

Diagnostic

Measurement deviation: zero drift caused by overpressure, impulse‑line plugging, seal system fill‑fluid loss. Communication failure: cable damage, poor contact, wrong network configuration. Abnormal alarm: process over‑range, sensor fault, loop voltage out of specification.

Product Brief

Rosemount 3051S SuperModule scalable pressure transmitter, high‑accuracy multi‑protocol instrument for pressure, flow and level measurement, designed for long‑term reliable operation in demanding industrial process environments