Rosemount Model 5081 Transmitters

The Rosemount Model 5081 Transmitters operate as loop-powered (12–42 VDC) instruments capable of interfacing with a wide range of analytical sensors, including pH/ORP, contacting and toroidal conductivity, and amperometric sensors for dissolved oxygen and chlorine. They provide flexible measurement capabilities such as resistivity, ppm/ppb oxygen levels, and total/free chlorine monitoring, making them suitable for diverse process applications. The transmitter features a large two-line LCD display, showing primary measurements (0.8-inch digits) and secondary variables like temperature (0.3-inch digits), ensuring clear visibility in field conditions. It also supports HART and FOUNDATION fieldbus protocols for remote configuration, diagnostics, and integration with asset management systems.

Built with a rugged epoxy-coated aluminum enclosure (NEMA 4X, IP65, and NEMA 7B explosion-proof ratings), the transmitter is designed to withstand harsh industrial environments including corrosive and hazardous areas. It includes advanced diagnostics that continuously monitor sensor health and provide warnings before failure, helping reduce downtime. Additional features such as non-volatile memory retain calibration and configuration data during power loss, while optional infrared remote configuration allows safe setup without opening the enclosure. With a simple menu structure and broad sensor compatibility, the 5081 ensures reliable, low-maintenance operation in continuous liquid analysis systems.