Hach Anatel PAT700 User Manual page 28

Installation
PAT700 Internal Circuit
Input 1
Input 2
12VDC +
(50 mA Max)
PAT700 Internal Circuit
Input 1
Input 2
12VDC +
(50 mA Max)
Page 26
The following two wiring diagrams
wiring:
1
2
3
4
5
Figure 12 Digital input wiring external power - Isolated
1
2
3
4
5
Figure 13 Digital input wiring internal power - Non-isolated
Figure 12 and Figure 13
External Control
Optional power from control system
+
5- 30 Volts DC
NPN
External Control
NPN
illustrate the digital input
Control System
Relay
OR
Control System
Relay
OR