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HD3406.2 conductivity, liquid resistivity in liquids, total dissolved solids (TDS) and salinity meter.
The HD3406.2 measures conductivity, liquid resistivity in liquids, total dissolved solids (TDS) and salinity
using combined 4-ring and 2-ring conductivity/temperature probes.
Temperature is measured by Pt100 or Pt1000 immersion, penetration or contact probes.
The probe calibration can be performed automatically in one or more of the 147μS, 1413μS, 12880μS or
111800μS/cm conductivity calibration solutions.

Conductivity meter.

Model  Description 
HD 3406.2  Laboratory Conductivity Resistivity meter.
HD3406.2 conductivity meter specification
Measurement of conductivity by instrument 
Measuring range (Kcell=0.01) / Res.  0.000 - 1.999µS/cm / 0.001µS/cm 
Measuring range (Kcell=0.1) / Res.  0.00 - 19.99µS/cm / 0.01µS/cm 
Measuring range (K cell=1) / Res.  0.0 - 199.9µS/cm / 0.1µS/cm
200 - 1999µS/cm / 1µS/cm
2.00 - 19.99mS/cm / 0.01mS/cm
20.0 - 199.9mS/cm / 0.1mS/cm 
Measuring range (Kcell=10) / Res.  200 - 1999mS/cm / 1mS/cm 
Accuracy (conductivity)  ±0.5% ±1digit 
Measurement of resistivity by instrument 
Measuring range (Kcell=0.01) / Res.  Up to 1GΩcm / (*) 
Measuring range (Kcell=0.1) / Res.  Up to 100MΩcm / (*) 
Measuring range (K cell=1) / Res.  5.0 - 199.9Ωcm / 0.1OΩcm
200 - 999Ωcm / 1OΩcm
1.00kΩ - 19.99kΩcm / 0.01kΩcm
20.0kΩ - 99.9kΩcm / 0.1kΩcm
100kΩ - 999kΩcm / 1kΩcm
1 - 10MΩcm / 1MΩcm 
Measuring range (Kcell=10) / Res.  0.5 - 5.0Ωcm / 0.1Ωcm 
Accuracy (resistivity)  ±0.5% ±1digit 
Measurement of total dissolved solids (with coefficient χ/TDS=0.5) 
Measuring range (Kcell=0.01) / Res.  0.00 - 1.999mg/l / 0.005mg/l 
Measuring range (Kcell=0.1) / Res.  0.00 - 19.99mg/l / 0.05mg/l 
Measuring range (K cell=1) / Res.  0.0 - 199.9 mg/l / 0.5 mg/l
200 - 1999 mg/l / 1 mg/l
2.00 - 19.99 g/l / 0.01 g/l
20.0 - 199.9 g/l / 0.1 g/l 
Measurement range (Kcell=10) / Res.  100 - 999 g/l / 1 g/l 
Accuracy (total dissolved solids)  ±0.5% ±1digit 
Measurement of salinity
Measurement range / Resolution 0.000 - 1.999g/l / 1mg/l
2.00 - 19.99g/l / 10mg/l
20.0 - 199.9g/l / 0.1g/l
Accuracy (salinity) ±0.5% ±1digit
Temperature measurement by instrument
Measurement range Pt100 -50 - +200°C
Measurement range Pt1000 -50 - +200°C
Resolution 0.1°C
Accuracy ±0.25°C
Drift after 1 year 0.1°C/year
Automatic/manual temperature compensation
  0 - 100°C with αT = 0.00 - 4.00%/°C
Reference temperature 20°C or 25°C selectable from menu
Conversion factor ./TDS 0.4 - 0.8
Cell constant K (cm-1) 0.01 - 0.1 - 0.7 - 1.0 - 10.0
Standard solutions automatically detected (@25°C)
  147μS/cm
1413μS/cm
12880μS/cm
111800μS/cm

Ordering codes
HD 3406.2 Bench-top Conductivity meter-Thermometer measures conductivity, liquid
resistivity, total dissolved solids (TDS) and salinity by 2 or 4 combined electrodes conductivity probes and
temperature by Pt100 or Pt1000 probes.
Datalogger which stores maximum, minimum, average value, it can store up to 36.000 samples. RS232 C
serial output or USB 2.0 for data download to a PC or printer from memory or in real time.
Functions: REL, HOLD, auto power off which can be disabled., protection degree IP 66. Battery power supply
or mains power supply by SWD10 (optional). Complete with 3 batteries, instructions manual and software
Deltalog 9 suitable from version 2. Conductivity probes, calibrating solutions, TP47 series temperature
probes with SICRAM module, cables for PC connection and outer power supplier have to be ordered
separately.