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

Operation Multi 3430
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4.4.2 Data storage
This menu contains all functions to display, edit and erase stored mea-
sured values.
Note
Detailed information on the storage functions of the Multi 3430 is given
in section 4.11.
4.4.3 Automatic Stability control
The automatic Stability control (AutoRead) function continuously
checks the stability of the measurement signal. The stability has a con-
siderable impact on the reproducibility of measured values.
You can activate or switch off the automatic Stability control function
(see section 4.4).
The measured parameter flashes on the display
z as soon as the measured value is outside the stability range
z when you switch over between the measured parameters with <M>.
z when the automatic Stability control is switched off.
4.4.4 Automatic switch-off
The instrument has an automatic switchoff function in order to save the
batteries (see section 4.4.1). The automatic switchoff switches off the
measuring instrument if no key is pressed for an adjustable period.
The automatic switchoff is not active
z if the power pack is connected
z if a USB-B cable is connected
z if the Automatic data storage function is active, or with automatic
data transmission
4.4.5 Display illumination
The meter automatically switches the display illumination to energy
saving mode if no key is pressed for 20 seconds.
After a further 60 seconds, the meter switches off the display illumina-
tion completely.
The illumination is switched on with the next keystroke again.
You can also generally switch on the display illumination (see section
4.4.1).