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

Multi 3430 Operation
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ba75865e11 02/2011
Preparatory activities Perform the following preparatory activities when you want to calibrate:
4.7.5 Calibration interval
The calibration evaluation is displayed as a sensor symbol.
After the QSC function has been enabled the sensor symbol is
replaced by the QSC color scale (see section 4.7.10).
After the specified calibration interval has expired, the sensor symbol
or the QSC color scale flashes. It is still possible to measure.
Note
To ensure the high measuring accuracy of the measuring system, cal-
ibrate after the calibration interval has expired.
Setting the calibration
interval
The calibration interval is set to 7 days (d7) in the factory.
You can change the interval (1 ... 999 days):
1 Connect the IDS pH sensor to the meter.
The pH measuring window is displayed.
2 Keep the buffer solutions ready.
1 Open the menu for measurement settings with <MENU/
ENTER>.
2 In the Calibration / Calibration interval menu, set the calibration
interval with <S><T>.
3 Confirm the setting with <MENU/ENTER>.
4 Quit the menu with <M>.