Emerson 1151DP4E12T0085B1 Differential Pressure Transmitter

Emerson's Rosemount 1151DP4E12T0085B1 Differential Pressure Transmitter is a legacy Rosemount DP transmitter that converts differential pressure into a 4-20 mA signal on a two-wire loop. As part of the 1151 family, this model is a differential-pressure transmitter and is designed for process control environments. The unit supports multiple output code configurations, with supply voltages of 12-45 V DC for Output Codes E and J, 30-85 V DC for Output Code G, and lower voltages for Codes L and M, depending on the selected code. It offers mounting options for 2-inch pipe or surface installation, enabling flexible integration in vessels, pipelines, or instrument manifolds. The full part number — 1151DP4E12T0085B1 — designates a differential-pressure variant within the 1151 family. Emerson’s Rosemount 1151 devices are listed as obsolete on official pages, reflecting their historical role in differential-pressure measurement alongside newer Rosemount instruments. This transmitter is used to monitor differential pressure across a process element (such as a flow element or tank) and translate it to a proportional 4-20 mA signal for connection to standard industrial controllers and DCS systems.