The Rosemount 3051TG is a gauge pressure transmitter from the Emerson Rosemount 3051 series industrystandard instruments used to measure pressure in liquids and gases and convert it to a standard electrical signal for process controls.
Key Features
Measurement Type
Gauge Pressure (pressure relative to atmospheric)
Often used in pipes, tanks, vessels, and process lines.
Output & Communication
420mA analog
HART protocol for digital communication, configuration, and diagnostics
Optional FOUNDATION Fieldbus or PROFIBUS PA in some versions
Pressure Ranges
Variable depending on model code examples include:
-
14.7 to 30psi (1.01 to 2.06bar)
-
14.7 to 150psi (1.01 to 10.34bar)
-
14.7 to 4000psi (1.01 to 275.79bar)
-
14.7 to 10000psi (1.01 to 689.47bar)
This makes it suitable for low to very high pressure applications.
Accuracy & Performance
0.040.075% of span (very accurate)
Excellent longterm stability
Fast dynamic response compared to typical transmitters
Construction & Materials
316L Stainless Steel processwetted
Optional exotic materials (Hastelloy, Monel, Tantalum) for aggressive media
Coplanar diaphragm design for reliable sensing
Operating Conditions
Looppowered (10.555VDC for 420mA versions)
Suitable for wide ambient and process temperatures
Robust IP66/67 housing (dust and water protection)
Typical Uses
Industrial process pressure measurement
Level measurement via differential pressure (with two sensors or remote seals)
Flow measurement (with DP devices/orifice taps)
Oil & gas, chemical, petrochemical, utilities, water treatment
These units are widely used because they are highly reliable, accurate, and integrate easily with PLC/DCS systems via HART/FIELD protocols.
Summary (Easy Quick Reference)
| Feature |
Specification |
| Product |
Emerson Rosemount 3051TG |
| Type |
Gauge Pressure Transmitter |
| Output |
420mA + HART |
| Pressure Range |
From low vacuum up to very high pressures (e.g., 10000psi) |
| Accuracy |
High (0.040.075%) |
| Materials |
316L SS & optional corrosionresistant alloys |
| Use |
Industrial pressure and process measurement |
If you want, I can also explain how to wire and configure this transmitter with a PLC or indicator like Masibus 409 or PIC101N, and how to set the scaling for a specific pressure range.
Would you like a wiring/configuration guide?