The Rosemount 3051TG2A2B21AB4M5 is a high-performance gauge pressure transmitter from Emerson's Rosemount 3051 series. This transmitter provides accurate and reliable pressure measurement for process control applications in oil and gas, chemical, power generation, and water treatment industries. The model number breakdown indicates specific configuration options: T=Gauge pressure, G=Measurement range up to 2000 psi, 2A=4-20 mA with HART, 2B=1/2-inch NPT process connection, 21=316L stainless steel wetted parts, AB4=Aluminum housing with 1/2-inch NPT conduit entry, M5=LCD display.
Measurement Type: Gauge pressure (relative to atmospheric)
Pressure Range: 0 to 2000 psi (customizable via factory calibration)
Reference Accuracy: ±0.04% of span
Long-term Stability: ±0.1% of URL per year
Output Signal: 4-20 mA with HART protocol
Process Connection: 1/2-inch NPT female (coplanar flange compatible)
Wetted Materials: 316L stainless steel
Housing Material: Aluminum (with epoxy powder coating)
Electrical Connection: 1/2-inch NPT conduit entry
Display: LCD (5-digit, with engineering units and bar graph)
Turn-down Ratio: Up to 100:1
Response Time: 100 ms (adjustable)
Ambient Temperature Range: -40°C to +85°C
Process Temperature Range: -40°C to +120°C (with standard fill fluid)
Protection Rating: IP66/NEMA 4X
Certifications: FM, ATEX, IECEx (explosion-proof and intrinsically safe options)

The 3051TG2A2B21AB4M5 includes Rosemount's advanced diagnostic suite, which continuously monitors transmitter health and process conditions. Features include loop integrity verification, plugged impulse line detection, and statistical process monitoring. The HART protocol allows remote configuration, diagnostics, and access to secondary process variables such as sensor temperature.
This gauge pressure transmitter is ideal for tank level measurement, pump discharge pressure, filter monitoring, and pipeline pressure control. Its high accuracy and stability make it suitable for custody transfer, critical process control, and safety instrumented systems (SIL 2 capable). The robust aluminum housing and 316L wetted parts provide corrosion resistance in harsh environments.



