Instruction manual
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2.3.3 Connecting pH/ORP Electrode 
1.  If the pH/ORP electrode has a BNC connector, remove the BNC 
connector from the cable. 
NOTE: Oakton Instruments offers an optional ‘BNC to Spade Lug 
adapter’ (Order code: 05994-90) that can be used with pH/ORP 
electrode without removing the BNC connector. 
2.  Strip the insulation of the cable so that the bare wires are exposed 
enough for connection as shown in Figure 3. 
Figure 3 : pH/ORP Electrode Cable 
NOTE: Make sure to strip inner black layer (screen) to expose the 
clear sheath. 
3.  Connect pH sensing wire to Pin 1 of J10 connector 
4.  Connect pH reference wire to Pin 2 of J10 connector 
Insulation 
pH Reference Wire 
Clear sheath
pH Sensing Wire
Screen










