Metrohm 949 - Page 6

Table of contents
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IV
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5.5 pH parameters .................................................................... 20
5.5.1 Sensors .................................................................................. 20
5.5.2 pH settings ............................................................................ 20
5.5.3 Automatic calibration ............................................................ 24
5.5.4 Manual calibration ................................................................. 27
5.5.5 pH measurement ................................................................... 29
5.6 ORP parameters .................................................................. 31
5.6.1 Sensors .................................................................................. 31
5.6.2 ORP settings .......................................................................... 31
5.6.3 Automatic calibration ............................................................ 34
5.7 Data processing .................................................................. 35
5.7.1 General ................................................................................. 35
5.7.2 Data processing settings ........................................................ 36
5.7.3 Automatic data collection ...................................................... 38
5.7.4 Manual data collection .......................................................... 39
5.7.5 Printing data .......................................................................... 40
5.7.6 Retrieving the memory .......................................................... 41
5.8 Device settings .................................................................... 41
6 Maintenance 44
6.1 Care ...................................................................................... 44
6.2 Maintenance by the regional Metrohm service repre-
sentative .............................................................................. 44
6.3 Cleaning ............................................................................... 45
7 Troubleshooting 46
7.1 General ................................................................................ 46
7.2 Problems .............................................................................. 47
7.2.1 Troubleshooting .................................................................... 47
7.3 Messages ............................................................................. 48
8 Recycling and disposal 50
9 Appendix 51
9.1 Saved buffer series ............................................................. 51
9.1.1 Metrohm ............................................................................... 52
9.1.2 NIST (according to DIN standard 19266, 2015) ...................... 52
9.1.3 USA ....................................................................................... 53
10 Technical specifications 55