Hach-Lange SI794 P User Manual - Manual (Page 89)

89
Calibration error messages
Offset out of range (±60 mV)
• Electrode worn out
• Buffer solutions unusable or contaminated
• Buffer does not belong to configured buffer set
• Temperature probe not immersed in buffer
solution (for automatic temperature
compensation)
• Wrong buffer temperature set
(for manual temperature specification)
• Nominal electrode zero point ≠ pH 7
Icon blinks:
Problem
Possible causes
Problems during recognition
of the buffer solution
• Same or similar buffer solution was used for both
calibration steps
• Buffer solution used does not belong to buffer set
currently configured in the transmitter
Electrode slope out of range (80...103 %)
• Electrode worn out
• Buffer solutions unusable or contaminated
• Buffer does not belong to configured buffer set
• Temperature probe not immersed in buffer
solution (for automatic temperature
compensation)
• Wrong buffer temperature set (for manual
temperature specification)
• Electrode used has different nominal slope