24
EN
Appendix II: Self-diagnosis information
Icons
Self-diagnosis information
pH
Conductivity
Wrong pH buffer solution or the meter recognition of
calibration solution out of range
√
√
Press
key when measuring value is not stable during
calibration
√
√
During calibration, the measuring value is not stable for
≥3min.
√
√
Electrode zero electric potential out of range
（
<-60mV or >60mV
）
√
Electrode slope out of range
（
<85% or >110%
）
√
pH measuring range out of range
（
<-2.00 pH or >16.00pH
）
√
Enter in pre-set due calibration to remind due calibration
√
√
70+ Series Version 1.0 August 2017
Summary of Contents for pH 70 Plus
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