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Hach-Lange SI794 P User Manual User Manual

Page 90

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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