ii
5.2 Calibration mode 21
5.3 Entry of calibration mode 21
5.3.1 Electrode coefficient calibration 21
5.3.2 Standard solution single-point calibration 21
5.3.3 Standard solution five-point calibration 22
6. Instruction set for RS232 23
7. Alternative fittings 23
8. Failure recovery 24
9. Maintenance 25