Product information "HI98331 Direct Soil Test™ EC/C°-Tester"
The HI98331 features a stainless steel penetration electrode that provides the ability to take direct measurements in soil. When calibration is needed, simply submerge the electrode tip into calibration solution and and enter calibration mode for automatic 1 point calibration.
Electrolytic conductivity, abbreviated as EC, is a measurement made in which electrical charges of particles in a medium are moved under the inŠfluence of a potential diff‹erence. EC is a measure of concentration, however, it is non-speci‡c for ion type. An ion is a charged particle present in the solution that contributes to the current Šflow. Ions are formed when a salt such as sodium chloride is dissolved in water to form particles having electrical charges. Sodium chloride, separates into Na+ and Cl-
Electrical conductance, the ability of a substance to conduct an electrical current is the reciprocal of electrical resistance. “Conductance” and “Resistance” depend on the geometrical dimensions of the substance being measured. Conductivity and resistivity are “normalized” terms that are used to denote a bulk intrinsic property of a substance. This is the measurement a standardized EC probe on a Conductivity or resistivity meter provides. Conductivity measurements can be used to provide additional industry specifi‡c measurements; TDS, Salinity and USP compliant conductivity. Many of Hanna’s meters provide these measurements also.
Automatic calibration to 1413 µS/cm conductivity standard
Automatic Temperature Compensation (ATC)
Samples automatically compensated for temperature variations
Uses a fixed 2%/oC temperature correction coefficient
Stainless steel penetration electrode
Allows for direct measurement in soil
Conductivity Range 0 to 4000 ?S/cm; 0.00 to 4.00 mS/cm (dS/m)
Conductivity Resolution 1 ?S/cm; 0.01 mS/cm (dS/m)
Conductivity Accuracy ±50 ?S/cm (0 to 2000 ?S/cm), ±300 ?S/cm (2000 to 4000 ?S/cm); ±0.05 mS/cm (0.00 to 2.00 mS/cm), ±0.30 mS/cm (2.00 to 4.00 mS/cm)
Temperature Range 0.0 to 50.0°C
Temperature Resolution 0.1°C
Temperature Accuracy ±1°C
EC/TDS Calibration automatic, one-point at 1.41 mS/cm
Temperature Compensation automatic, temperature coefficient (?) fixed 2% / °C
Battery Type/Life CR2032 Li-ion approximately 100 hours of continuous use
Electrode/Probe 114 mm (4.5 “) Stainless steel penetration
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions 50 x 196 x 21 mm (2.0 x 7.7 x 0.9“)
Weight 74 g (2.4 oz.)
Ordering Information HI98331 is supplied with a stainless steel penetration probe, batteries, and instrument quality certificate.