Hach AF7000 - Page 11

Figure 3 Optional connections
1 Modbus (RS485) card or alarm relay card (optional) 4 Autoflush card (optional)
2 4–20 mA PID controller card or alarm relay card
(optional)
5 High voltage barrier
3 4–20 mA Process Output controller card or digital
input card (optional)
Connect to devices
W A R N I N G
Electrical shock hazard. Externally connected equipment must have an applicable country safety
standard assessment.
English 11