Hach-Lange SI794 P User Manual - Manual (Page 90)

90
Problems during recognition
of the buffer solution (continued)
• During manual calibration the buffer solutions
were not used in the specified order
• Buffer solutions unusable or contaminated
• Wrong buffer temperature set
(for manual temperature specification)
• Electrode defective
• Electrode not connected
• Electrode cable defective
Icon blinks:
Problem
Possible causes
Calibration was canceled after approx.
2 minutes because the electrode drift was too
large.
• Electrode defective
• Electrode dirty
• No electrolyte in the electrode
• Electrode cable insufficiently shielded or
defective
• Strong electric fields influence the measure-
ment
• Major temperature fluctuation of the buffer
solution
• No buffer solution or extremely diluted