Hanna Instruments HI 8711 - Manual (Page 17)

17
1. BNC socket for ORP electrode
2. Input from amplified electrode
3. Oxid/Reduc dosage consent terminals
4. Connections for dosing pump
5. Alarm contacts
6. Power supply terminals
7. Fuse holder
8. OXID/RED. dosage selection terminals
9. Recorder output contacts
10. Connections to the transmitter
11. Power for amplified electrode
12. Connection for matching pin
13. Connection for reference electrode
14. Disable overtime connection
15. Overtime set knob (about 5 to 60 min)
REAR PANEL HI 8720
Unplug the instrument from the power supply before replacing the fuse.
Only one of BNC, AMP INPUT or INPUT TRANSMITTER connectors can be
used at a moment. Leave the other two inputs unconnected.
Only one of the two terminals 4-10 mA and 0-20 mA can be used
at one moment. Leave the other unconnected.