| http://www.w3.org/ns/prov#value | - Process devices 4 are mounted on a process container, such as piping 10, containing a process element (e.g. a process fluid) In the example shown, process device 4 is a process variable transmitter for measuring a process variable such as temperature, pressure, or other process variable, and transmitting process variable data relating to the process variable to control room 6 over control loop 8.
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