Hanna Instruments HI 9912 - Manual (Page 7)

7
Unplug the instrument from the power supply before
wiring or replacing the fuses.
23
24
25
26
17. Triple contact alarm in a Normally Closed (NC) or a Normally
Open (NO) position
18. Powered dosage terminals for pH correction
19. Powered dosage terminals for ORP correction
20. 110/115V or 220/240V power configuration
21. Incoming power terminals
22. Fuses
BOTTOM VIEW
23. Female BNC connector for a combination pH electrode
24. 4-mm Banana socket for the pH ground probe
25. Female BNC connector for a combination ORP electrode
26. 4-mm Banana socket for the ORP ground probe