Hach Polymetron NA9600 sc Instructions D'utilisation page 16

Figure 11 HART voltage circuit - active module powered
1 HART module
2 Hand-held terminal (Secondary
communication device)
Figure 12 HART current circuit - active module powered
1 HART module
2 Hand-held terminal (Secondary
communication device)
Table 4 Resistance values for active module powered HART circuits
Loop resistance
250–350 Ω
4.12 Circuit diagrams for non-HART communication
Figure 13, Table 5, Figure 14
Figure 13 4-20 mA circuit - active module powered
1 HART module
Table 5 Resistance values for active module powered 4-20 mA circuit
Power supply voltage
15 VDC
16 English
and Table 6 are not recommended for HART communication.
3 External device (Recorder/data acquisition
system)
3 External device (Recorder/data acquisition
system)
2 External device (Recorder/data acquisition
system)
Loop resistance
0–350 Ω