RF adapter for field device

摘要

The present invention relates to an adapter for coupling to a process control transmitter of the type used to monitor a process variable in an industrial process, the adapter comprising I/O circuitry configured to couple to a two wire process control loop and to the process control transmitter and to communicate on the process control loop, wireless communication circuitry coupled to the two wire process control loop configured to transmit an RF signal, power supply circuitry coupled to the two wire process control loop configured to provide power to the wireless communication circuitry, bypass circuitry connected in parallel with the power supply circuitry, and wherein the power supply circuitry and the bypass circuitry are configured to connect in series with the two wire process control loop.