Pure Water Tester (HI98308) – Hanna Instruments

Description

The HI98308 Pure Water tester is a rugged and reliable pocket-sized tester that offers quick and accurate readings. The HI98308 Pure Water tester features graphite electrodes to reduce polarization effects and an exposed temperature probe for fast response when compensating for temperature changes. Manual calibration is performed to a single point.rrrExposed temperature sensorrVery low range EC (0.0 to 99.9 S/cm)rSingle point manual calibrationrrrrDetails:rrThe HI98308 features an amperometric graphite electrode that provides better repeatability in measurementssince they do not oxidize. An amperometric measurement of EC is based on Ohms 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 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.rThe HI98308 uses a conductometric measurement to determine the purity of water. The HI98308 Pure Water Test (PWT) enables users to check the purity of distilled or demineralized water in laboratory or industrial environments. PWT is suited for fields such as printed circuit board washing, laundry, steam cleaning, checking car battery water andall areas where distilled, demineralized or pure water is used. This tester is housed in durable casing that provides excellent protection against harsh industrial environments.rElectrolytic 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 definitionas 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.rElectrical 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 resistivityare 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 Hannas meters provide these measurements also.rFeatures at-a-glance:rOne-point calibrationrrrCalibrate with 84 S/cm EC solution using a screwdriverrrrExposed Temperature ProberrrFast response to changes in sample temperaturerrrAutomatic Temperature Compensation (ATC)rrrSamples automatically compensated for temperature variationsrrrGraphite electroderrReduced polarization effectsrrrSpecifications:r rrrConductivity Ranger0.0 to 99.9 S/cmrrrConductivity Resolutionr0.1 S/cmrrrConductivity Accuracyr2% F.S.rrrCalibrationrmanual, one pointrrrTemperature Compensationrautomatic from 0 to 50C (32 to 122F) with =2%/C typicalrrrBattery Type/Lifer1.5V (4) / approximately 250 hours of continuous userrrEnvironmentr0 to 50C (32 to 122F); RH max 95% non-condensingrrrDimensionsr175 x 41 x 23 mm (6.9 x 1.6 x 0.9)rrrWeightr95 g (3.4 oz.)rrrOrdering InformationrHI98308 is supplied with protective cap, calibration screwdriver (HI98308), batteries and instructions.rrrWarrantyr1 year”,”subjectOf”:[{“@type”:”CreativeWork”,”video”: {“@id”: “VideoObject_eHWPfecQLJ0”}}] }