User Manual
Table Of Contents
- 1 Overview
- 2 Safety
- 3 Commissioning
- 4 Operation
- 4.1 Switching on the meter
- 4.2 Login with a user name
- 4.3 General operating principles
- 4.4 Sensor-independent settings
- 4.5 Sensor info
- 4.6 Channel display
- 4.7 pH value
- 4.7.1 General information
- 4.7.2 Measuring the pH value
- 4.7.3 Settings for pH measurements
- 4.7.4 pH calibration
- 4.7.5 Calibration interval
- 4.7.6 Carrying out an automatic calibration (AutoCal)
- 4.7.7 Carrying out a manual calibration (ConCal)
- 4.7.8 Displaying calibration records
- 4.7.9 Continuous measurement control (CMC function)
- 4.7.10 QSC function (sensor quality control)
- 4.8 ORP voltage
- 4.9 Dissolved oxygen
- 4.10 Conductivity
- 4.11 Data storage
- 4.12 Transmitting data (USB interfaces)
- 4.12.1 Outputting current measurement data
- 4.12.2 Transmitting data (to a PC)
- 4.12.3 Connecting the PC / USB-B interface (USB Device)
- 4.12.4 Options for data transmission to a PC (USB-B interface)
- 4.12.5 Connecting the USB memory device / USB-A interface (USB Host)
- 4.12.6 Data transmission to a USB memory device (USB-A interface)
- 4.13 Reset
- 5 Maintenance, cleaning, disposal
- 6 What to do if...
- 7 Technical data
- 8 Lists
- 9 Appendix: Firmware update

Contents Multi 3430
4
ba75865e11 02/2011
4.5 Sensor info. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4.6 Channel display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.7 pH value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.7.1 General information . . . . . . . . . . . . . . . . . . . . . . 39
4.7.2 Measuring the pH value . . . . . . . . . . . . . . . . . . . 40
4.7.3 Settings for pH measurements . . . . . . . . . . . . . . 42
4.7.4 pH calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4.7.5 Calibration interval . . . . . . . . . . . . . . . . . . . . . . . 49
4.7.6 Carrying out an automatic calibration (AutoCal) . 50
4.7.7 Carrying out a manual calibration (ConCal) . . . . 54
4.7.8 Displaying calibration records. . . . . . . . . . . . . . . 58
4.7.9 Continuous measurement control (CMC
function) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
4.7.10 QSC function (sensor quality control) . . . . . . 60
4.8 ORP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
4.8.1 General information . . . . . . . . . . . . . . . . . . . . . . 63
4.8.2 Measuring the ORP . . . . . . . . . . . . . . . . . . . . . . 63
4.8.3 Settings for ORP measurements . . . . . . . . . . . . 65
4.9 Dissolved oxygen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
4.9.1 General information . . . . . . . . . . . . . . . . . . . . . . 66
4.9.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
4.9.3 Settings for D.O. sensors
(menu or measurement and calibration settings) 70
4.9.4 FDO
®
Check procedure (check of the FDO
®
925) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
4.9.5 D.O. calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 74
4.9.6 Displaying calibration records. . . . . . . . . . . . . . . 77
4.10 Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
4.10.1 General information . . . . . . . . . . . . . . . . . . . . . . 78
4.10.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
4.10.3 Temperature compensation . . . . . . . . . . . . . . . . 81
4.10.4 Settings for IDS conductivity sensors . . . . . . . . . 82
4.10.5 Determining the cell constant
(calibration in control standard) . . . . . . . . . . . . . 85
4.10.6 Displaying calibration records . . . . . . . . . . . . . . . 87
4.11 Data storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
4.11.1 Manual storage . . . . . . . . . . . . . . . . . . . . . . . . . . 89
4.11.2 Automatic storage at intervals . . . . . . . . . . . . 89
4.11.3 Editing the measurement data storage. . . . . . . . 92
4.11.4 Erasing the measurement data storage . . . . . . . 93
4.12 Transmitting data (USB interfaces) . . . . . . . . . . . . . . . . . 94
4.12.1 Outputting current measurement data . . . . . . . . 94
4.12.2 Transmitting data (to a PC). . . . . . . . . . . . . . . . . 94
4.12.3 Connecting the PC / USB-B interface (USB
Device) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
4.12.4 Options for data transmission to a PC (USB-B
interface). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
4.12.5 Connecting the USB memory device / USB-A
interface (USB Host) . . . . . . . . . . . . . . . . . . . 96