Hanna Instruments HI 9910 - Manual (Page 7)

7
Unplug the instrument from the power supply before
wiring and replacing the fuses.
24
25
24. Female BNC socket for combination pH electrode
25. 4-mm Banana socket for ground probe
16. Recorder output contacts
17. Automatic or Manual Temperature Compensation switch
18. 0 to 20 or 4 to 20 mA isolated output switch
19. Triple contact alarm in a Normally Closed (NC) or a Normally
Open (NO) position.
20. Powered dosage terminals (Relay)
21. 110/115V or 220/240V power configuration
22. Incoming power terminals
23. Fuses
BOTTOM VIEW