Check the listing for details. Reed Instruments SD-4307 Data Logging Conductivity/TDS/Salinity Meter. Condition: Used. Listed at 125.00 USD. This meter was used for a few hours after original purchase as part of the proof-of-concept for a freshwater river monitoring project, which never got off the ground. Sensor has only been exposed to river water and household tap water with salt. Requires 6 AA batteries, not included. REED SD-4307 Data Logging Conductivity/TDS/Salinity MeterModel: SD-4307 | UPC: 800837001887Real-time data logger with integrated SD memory card (optional) measures/records conductivity, total dissolved solids (TDS) and salt levels in water with automatic temperature compensation. REED SD-4307 OffersThis SD Series datalogger is capable of measuring conductivity, total dissolved solids (TDS) and salt levels in water. The SD-4307 features Data hold, Max/Min functions, and an easy-to-read backlit LCD display. Using an SD card (max 16Gb), a user can select a desired sampling rate and quickly generate an Excel file without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring. Optional PC software also allows a user to track live measurements.FeaturesMeasures conductivity, total dissolved solids (TDS) and salt levels in waterAutomatic temperature compensationReal time datalogger with integral SD memory card (optional)User selectable sampling rateEasy-to-read backlit LCD displayData hold and Min/Max functionsOptional PC software features live tracking via USB connectionTripod mount for long-term monitoringLow battery indicator and auto shut off REED SD-4307 SpecificationsConductivityMeasuring Range200µS/cm, 2mS/cm, 20mS/cm, 200mS/cmAccuracy±(2% +1 dgt)Resolution0.1µS, 0.001mS, 0.01mS, 0.1mSTDS (Total Dissolved Solids)Measuring Range200, 2000, 20,000, 200,000 ppmAccuracy0.1, 1, 10, 100 ppmResolution±(2% +1 dgt)SalinityMeasuring Range0-12% (% weight)Accuracy±0.5%Resolution0.0001General SpecificationsDisplayDual Display, LCDBacklit DisplayYesData HoldYesMinYesMaxYesDatalogging CapabilitiesYesReal-Time Clock and Date StampYesSampling RateYes (1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600s)External MemoryYes, expandable up to 16Gb with SD card (optional)Auto Shut-offYes (after 10 mins/off)Kick StandYesTripod MountableYesLow Battery IndicatorYesPower Supply6 x AA batteries or AC Adapter (optional)OutputYesBattery LifeSampling Time DependentPC ConnectivityUSB Cable (optional)Software SW-U801-WIN Software (optional)Software OS CompatibilityWindows XP / Vista / 7Product CertificationsCEOperating TemperatureMeter: 32 to 122°F (0 to 50°C) Probe: 32 to 140°F (0 to 60°C)Storage Temperature14 to 140°F (-10 to 60°C)Operating Humidity Range10-80%Dimensions7 x 2.7 x 1.9" (177 x 68 x 45mm)Weight1.1 lb (515g) Ideal Applications for the REED SD-4307Water ConditioningGeneral purpose pH measurementAquariumsWastewater monitoringBeverage Production