Apera EC400S - Appendix 3: Table of Self-Diagnosis

- 27 -
13 APPENDIX 3: TABLE OF SELF-DIAGNOSIS
Symbol
Self-Diagnosis Information
pH
Conductivity
Wrong conductivity calibration 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 ≥ 3 min.
√
√
pH electrode zero electric potential out of range (<-60mV
or >60mV)
√
pH electrode slope out of range (<85% or >110%)
√
Enter in pre-set due calibration to remind re-calibration
√
√
APERA INSTRUMENTS (Europe) GmbH
Address: Wilhelm-Muthmann-Str.15
42329 Wuppertal, Germany
Email: info@aperainst.de
Website: www.aperainst.de
Tel.: +49 202 51988998