4XL Series Meters SpecificationsXL15, 20, 25, 30, 40, 50 and 60 meterscell constants range 0.1, 1.0, 10conductivity 0 to 500 mS/cm over 4 ranges0 to 200.0 μS, 200.0 μS to 2.000 mS,2.000 to 20.00 mS, 20.00 to 500.0 mSresistivity 3 ohm-cm to 100 megohm-cm over 4 ranges0 to 20.00 KOhms, 20.00 to 200.0 KOhms,200.0 KOhms to 2.000 MOhms,2.000 to 100.0 MohmsTotal Dissolved Solids (TDS) 0.0 to 500.0 ppt over 4 ranges(depending on the TDS factor)0 to 200.0 x TDS factor ppm,200.0 x TDS factor to 2000 x TDS factor ppm,2.000 x TDS factor to 20.00 x TDS factor ppt,20.00 x TDS factor to 200.0 x TDS factor pptsalinity 0 to 90 ppt over 4 ranges0 to 0.094 ppt, 0.094 to 1.000 ppt,1.0 to 11.50 ppt, 11.50 to 90.00 pptaccuracy 0.5% of full scale + 1 digit(Applicable only for XL20, XL30, XL50, and XL60)range 0 to 60 mg/L (0 to 1272 mbar)0 to 600 % saturationresolution 0.01 mg/L (0.1 mbar)0.1 % saturationaccuracy 0.1 + 1 least significant digit(Applicable only for XL40 and XL60)range -5.0 to +105.0 °C (for meter only)(Applicable only for XL15, XL20, XL25, XL30, XL50, and XL60)range -5.0 to +46.0 °C (Applicable only for XL40 and DO mode in XL60)resolution 0.1 °Caccuracy ± 0.2 °Crange 450 to 825 mmHgresolution 1 mm Hgaccuracy ±1 mm Hg + 1 least significant digit(Applicable only for XL40 and XL60)range 0 to 45 ppt(Applicable only for XL40 and XL60)operating temperature 5-45 °Coperation humidity 5-80 % noncondensingmaximum operating altitude 2000minstallation category IIPollution category degree 2(Applicable for XL15, XL20, XL25, XL30, XL40, XL50, and XL60)Temperature ModeOperating ConditionsConductivity ModeDissolved Oxygen ModeBarometric PressureSalinity Correction