MSA Ultima X Series Installation & Maintenance Instructions Manual page 30

Figure 1-15. Two-Wire Printed Circuit Board
(with HART Protocol)
Installation of Two-Wire, 4-20 mA Output with HART Protocol
1. Connect 12-30 VDC power lead to J8-1 (see FIGURE 1-15).
NOTE: The HART signal is not available below 12 VDC
on the two-wire pc board.
2. Connect J8-2 to the 4-20 mA input on the remote system.
3. Terminate the 4-20 mA line with 230-500 Ohms of resistance.
4. Connect sensor module to main pc board connector J-1.
5. Assemble lid on the enclosure.
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