GMH3451-LTG 610028Conductivity measuring device incl. 4-pole measuring cell, with data loggerHIGHLIGHTS:Display of resistivity, salinity or TDS (total dissolved solids)Conform to the regulations of the drinking waterGENERAL:Intelligent set with 2-pole measuring cell for tap water, etc., 4-pole worry-free package also suitable for continuous measurement in high conductivity ranges (eg salt water)SPECIFICATIONS:Measuring range
Conductivity: 
0.0 ... 200.0 ?S / cm
0 ... 2000 ?S / cm
0.00 ... 20.00 mS / cm
0.0 ... 200.0 mS / cm
0 ... 400 mS / cm 
manually selectable or AutoRange
Temperature: 
-5.0 ... +100.0 ° C
Resistivity: 
0.005 ... 100.0 kOhm * cm
Salinity: 
0.0 ... 70.0 g / kg water
TDS: 
0 ... 1999 mg / l
Accuracy (± 1 digit) (at nominal temperature = 25 ° C)
Conductivity: 
± 0.5% of mv ± 0.3% FS or ± 2 ?S / cm
Temperature: 
± 0.2% of mv ± 0.3 K
Scope of supply: 
Device incl. Measuring cell, battery, calibration protocol, manual