Emerson Rosemount 1181T Conductivity Transmitter

Emerson Rosemount 1181T Toroidal Conductivity Transmitter is a two‑wire, loop‑powered instrument that accepts the conductance signal from a Rosemount toroidal conductivity sensor and converts it into a process signal for your control system. Specifically designed to pair with Rosemount toroidal conductivity sensors, the 1181T provides a rugged, industrial interface for monitoring conductivity in aqueous process streams and supports long, reliable operation in demanding environments. To preserve signal integrity in noisy plant wiring, Emerson specifies shielded cabling, with Belden 8760 or equivalent between the sensor and transmitter. The 1181T embodies the classic Rosemount toroidal measurement approach and remains part of the Rosemount/Fisher Controls family, enabling straightforward installation with the sensor head mounted nearby or wired into a nearby control cabinet. Its two‑wire configuration simplifies field wiring by sharing power and the measurement signal on the same conductors, reducing installation time and potential fault points in the loop.