Emerson Electric Co. 300S1AA Pressure Transmitter

Emerson’s Fisher Rosemount 300S1AA Pressure Transmitter is an industrial pressure sensor that converts pressure measurements into an electrical signal within a compact enclosure, powered by 9–32 V DC and drawing about 17.5 mA during operation, with its housing classified as Type 4X for durability in harsh environments. The 300S1AA designation places it in the Rosemount family of pressure transmitters, a line known for robust construction and dependable performance in process-control applications where reliable pressure sensing is essential. The Type 4X enclosure provides protection against dust and water ingress and corrosion, enabling installation in outdoor or damp indoor areas, on panels, or on equipment racks without compromising the transmitter’s performance in unfriendly industrial settings. This combination—wide input voltage range, measured current draw, and a corrosion-resistant enclosure—helps ensure stable operation in demanding plant environments where consistent pressure monitoring is critical for safety, efficiency, and regulatory compliance. As with other Rosemount transmitters, it is designed for reliable long-term operation with minimal maintenance in demanding process plant environments.