Hanna Instruments HI6221 - Page 4

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TABLE OF CONTENTS
10.6. Logging ............................................................................................................. 52
10.7. Profiles .............................................................................................................. 53
11. Calibration ................................................................................................................... 55
11.1. pH Calibration ..................................................................................................... 56
11.2. Relative mV Calibration ....................................................................................... 60
12. Measurement ............................................................................................................... 63
12.1. Measurement Tips ............................................................................................... 63
12.2. Direct Readings .................................................................................................. 63
12.3. Direct / Autohold Readings .................................................................................. 64
13. Error Messages ............................................................................................................. 65
14. Logging ....................................................................................................................... 66
14.1. Automatic Logging .............................................................................................. 66
14.2. Manual Logging ................................................................................................. 67
14.3. Autohold Logging ............................................................................................... 68
15. Maintenance & Conditioning ......................................................................................... 70
16. Accessories .................................................................................................................. 72
Certification ........................................................................................................................ 79
Recommendations for Users ................................................................................................. 79
Warranty ............................................................................................................................ 79
Regulatory notices for the Wi-Fi module ................................................................................ 80