五．Establish Connection - East Tester HART 475 User Manual

五．Establish Connection
5.1 Establish HART loop connection
The communicator can be connected to the remote control room or the instrument
on the spot to communicate with the instrument independently.
There is 250 Ω resistance in internal set of communicator , and can be
connected or disconnected.Set as connectting internal resistance,there is no need to
connect external
external resistance should be connected. The resistance can be connected in parallel
to the HART instrument or to the load resistance. The connection mode is shown in
the figure below.Connection leads are non-polar.
resistance.When set to disconnect the internal resistance, the
HART METER
Figure7-1 Connected to a 250 ohm resistance
HART METER
Figure7-2 Connect to the HART loop
5
freely