Network-Distributed Ultrasound

High-frequency analog RF ultrasonic signals, typically in the 1 – 10 Mhz range, are transmitted over coaxial cables. In order to maintain signal amplitude, quality and fidelity, the cables should be as short as possible – generally less than 150’ (45.7 m). For applications where very long distances are required, it becomes necessary to place the UT instrumentation close to the transducer and digitize the data before sending it the required longer distances. This paper discloses and compares three different network topologies and approaches to remoting the UT system: Modbus over RS-485, Cellular and LORA WLAN. Additionally, the paper will review several practical and costeffective examples for remote UT monitoring at various Oil & Gas and Power Generation facilities.

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