The Rosemount 3051S Electronic Remote Sensor (ERS)™ System, which is the best in its class in terms of performance and measurement stability, is designed with a flexible, digital architecture. The ERS System uses two pressure sensors connected together with an electrical cable to electronically calculate the differential pressure. This easy-to-install, safety-certified system is designed for faster response time than traditional systems and provides you with exceptional performance in a wide variety of applications.