HART communicatorsFigure 9-1:
A. Model 5081-C-HT two-wire transmitter
B.
Handheld communicator (configurator)
C. 4-20 mA + digital
D. Bridge
E. Control system
F. Computer
Both the Rosemount Model 375 (or 475) and a computer can be used to communicate with a HART
transmitter. The 250 ohm load (minimum) must be present between the transmitter and the power
supply.
9.2 Foundation Fieldbus communication
Figure 9-2 shows the 5081-C-FF being used to measure conductivity. The figure also shows
three ways in which Fieldbus communciation can be used to read process variables and
configure the transmitter.
Digital communications
122 Rosemount 5081
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