The HI98304 DiST®4 EC tester is a rugged and reliable pocket-sized tester that offers quick and accurate readings.
Exposed temperature sensor
High range EC 0.00 to 19.99 mS/cm
Single point manual calibration
The HI98304 features an amperometric graphite electrode that provides better repeatability in measurements, since they do not oxidize. An amperometric measurement of EC is based on Ohm’s Law, I = V/R, where R depends on the distance between two pins and their surface. Oxidation changes both the distance and surface, which will affect accuracy. The DiSTs non-oxidizing graphite pins are able to provide an optimal surface for accurate, dependable results. When calibration is needed, simply submerge the electrode tip into calibration solution and adjust the trimmer on the side of the tester.
Electrolytic conductivity, abbreviated as EC, is a measurement made in which electrical charges on atomic or larger sized particles in a medium are moved under the influence of a potential difference. EC is a measure of concentration however it is non-specic for ion type. An ion is a charged particle present in the solution that contributes to the current flow. 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-. This is a simplified denfinition for the measurement is affected by many things such as the type of ionic compound(s) dissolved in the water; the ions mobility, the solution viscosity, temperature as well as concentration.
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 specific measurements; TDS, Salinity and USP compliant conductivity. Many of Hanna’s meters provide these measurements also.
Calibrate with 5.00 mS/cm or 12.88 mS/cm EC solutions using a screwdriver
Exposed Temperature Probe
Fast response to changes in sample temperature
Automatic Temperature Compensation (ATC)
Samples automatically compensated for temperature variations
- Reduced polarization effects
|Conductivity Range||0.00 to 19.99 mS/cm|
|Conductivity Resolution||0.01 mS/cm|
|Conductivity Accuracy||±2% F.S.|
|pH Calibration||manual, one point|
|Temperature Compensation||automatic from 0 to 50°C (32 to 122°F)|
|Battery Type/Life||1.5V (4) / approximately 200 hours of continuous use|
|Environment||0 to 50°C (32 to 122°F); RH max 95% non-condensing|
|Dimensions||175 x 41 x 23 mm (6.9 x 1.6 x 0.9’’)|
|Weight||95 g (3.4 oz.)|
|Ordering Information||HI98304 (DiST®4) is supplied with protective cap, screwdriver, batteries and instructions.|