Owner's 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 3420 Operation
83
ba75864e11 02/2011
Type Measuring cell used
Cal Measuring cells whose cell con-
stant is determined by calibration
in the KCL control standard solu-
tion.
Calibration range:
0.450 to 0.500 cm
-1
The currently valid cell constant
is displayed in the status line.
man Freely adjustable cell constant in
the range 0.450 ... 0.500 cm
-1
.
Man. cell const. 0.450 ...
0.475 ...
0.500 cm
-1
The cell constant and be dis-
played and set here
Temp. comp. (TC)
/ Method
nLF
lin
off
Procedure for temperature com-
pensation (see section 4.10.3).
This setting is only available for
the measured parameters, ϰ and
ρ.
Temp. comp. (TC)
/
Linear coeff.
0.000 ...
2.000 ...
3.000 %/K
Coefficient of the linear tempera-
ture compensation.
This setting is only available
when the linear temperature
compensation is set.
Temp. comp. (TC)
/ Reference temp.
20 °C
25 °C
Reference temperature
This setting is only available for
the measured parameters, ϰ and
ρ.
TDS factor 0.40 ... 1.00 Factor for TDS value
Reset - Resets all sensor settings to the
delivery condition (see section
4.13.1)
Menu item Possible
setting
Description