Maintenance - Endress+Hauser RB223 Mode D'emploi

3. Intrinsically safe operation of 2-wire transmitter (nonEx É Ex)
Fig. 9: Connecting a two-wire transmitter to RB223
!
Note!
® ®
1) A HART modem can be connected to the HART communication jacks.
®
The HART communication jacks are internally connected to the terminals
"1+H", "2+" and "3-" and (in the case of a two-channel device) "4+H", "5+"
and "6-" (see »Terminal assignment« on page 26).
®
The resistance between the HART communication jacks must be between
230 and 600 Ω when using the HART® protocol (see »HART® Transmis-
sion« on page 30).

7 Maintenance

No special maintenance work is needed on the device.
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