iii
7.5 Hi point 22
7.6 Lo point 23
7.7 Wash time 24
7.8 Analog output 1 (pH/ORP) 25
7.9 Analog output 2 (temperature) (PC-3100 only) 26
7.10 Time and date setting (PC-3100RS only) 27
7.11 RS-485 (PC-3100RS only) 27
7.12 Backlit LCD 28
8. Calibration
Block diagram of Calibration 29
8.1 Security code of calibration 30
8.2 Entry of calibration mode 31
8.3 Asymmetry Buffer calibration 32
8.4 Standard Buffer calibration 33
8.5 ORP calibration 36
9. Instruction set for RS-485 (PC-3100RS only)
9.1 Illustration of connection for RS-485 37
9.2 Instruction set of measurement mode 38
9.3 Instruction set of set-up mode 39
10. Error messages (Error code) 42
11. Maintenance 43