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Figure 1-5 shows how to connect the optional 250 ohm load resistor.
FIGURE 1-5. Connecting the HART Communicator with the Load Resistor.
Explosions can result in death or serious injury. Before connecting the HART
Communicator in an explosive atmosphere, make sure the instruments in the
loop are installed in accordance with intrinsically safe or nonincendive field
wiring practices. For intrinsically safe CSA and FM wiring connections, see
Appendix C.
WARNING
!
HART-compatible Device
Power
Supply
+
–
Optional250 Ohm
Load Resistor
275-0068A, 0275 B01A
NOTE: To temporarily install theoptional 250 ohmLoad Resistor:
1. Insert the load resistor into the lead set jacks.
2. Open the loop to allow connection of the resistor in series inthe loop.
3. Close theloop using thelead set connectors.
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+