Emerson Rosemount 6888A Quick Start Manual page 14

Quick Start Guide
Figure 1-7: Rosemount 6888A Standard Probe Housing
3. Connect the 4-20 mA signal wires at the transmitter. Use a shielded
twisted wire pair.
Do not allow bare shield wires to contact the circuit boards. Insulate
the shield wires prior to termination. The transmitter electronics are
loop-powered, i.e., the 4-20 mA signal wires supply 24 Vdc from the
DCS or an external power supply.
4. Terminate the shield only at the transmitter electronics housing
unless using a Rosemount 6888 Xi. When using the Rosemount 6888
Xi Advanced Electronics, terminate the shield at both ends.
NOTICE
The 4-20 mA signal represents the O
probe-mounted electronics. Superimposed on the 4-20 mA signal is
HART information accessible through a Field Communicator or AMS
software.
5. Reinstall cover on transmitter.
6. Follow the remaining electrical instructions only if the Rosemount
6888 Xi is included with your system configuration.
14
value and also powers the
2
Emerson.com/Rosemount
October 2019