Hach Anatel PAT700 User Manual page 33

The following two wiring diagrams
wiring:
PAT700 Internal Circuit
Input 1
Input 2
12VDC +
(50 mA Max)
PAT700 Internal Circuit
Input 1
Input 2
12VDC +
(50 mA Max)
Figure 16 Digital input wiring internal power - Non-isolated
1
+
5- 30 Volts DC
2
3
4
5
Figure 15 Digital input wiring external power - Isolated
1
2
3
4
5
Figure 15 and Figure 16
External Control
Optional power from control system
OR
NPN
External Control
OR
NPN
Installation
illustrate the digital input
Control System
Relay
Control System
Relay
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