Use this hygrothermograph for indoor or sheltered outdoor use. The sturdy base, tinted cover, and carrying handle are constructed of lightweight, corrosion-resistant acrylic. Hygrothermometer needs no external power or batteries; spring winding keeps the chart running for 8 days. Unit maintains a steady chart speed even when the motor begins to run down. Two easy-to-change gears are included; one for 1-day (26-hour) rotation and another for 7-day (172-hour) rotation.
Feature a human hair bundle humidity sensor and an aged bimetallic strip temperature sensor. Response time is 15 minutes for 45% of reading.
Exposure to RH levels above 90% can cause a decrease of about 7-10% RH in readings over the entire range due to temporary elongation of the hair bundle. When exposed to humidity levels below 80%, hair bundle will return to normal in about three weeks.
HygrothermographProduct TypeOaktonBrandProduct LineDrumClassGradeASTM NumberASTM ApplicationCapacityRangeIncrementsResolutionAccuracyPrecision14 to 122°F (–10 to 50°C)Temperature RangeTemperature Resolution±1.8°F (±1.0°C)Temperature AccuracyThermometer FillGlass TypeCoatingBottle Fill5 to 90% RHHumidity Range±3% from 10 to 90%; ±5% from 5 to 10%Humidity Accuracy1% RHHumidity ResolutionGraduation RangeGraduation IntervalConductivityResistivitySalinityTDSTolerance (±)StopperLengthColor CodeReadabilityRepeatability (S.D.)Linearity (±)Pan SizeUnits of MeasurementInterfaceCalibrationCalibration PointsDisplaySpigotQuick ConnectsHose Barb SizeThread DiameterCap SizeMaterialHousingDraft ShieldDraft Shield DimensionsPorosityPore SizeDisc DiameterImmersionATC24 hour; 7 day (user selectable)SpeedSpeed IncrementOrbit SizePlatform DimensionsOperating ModesMax. Flow (GPH)Max. Flow (GPD)Max. Pressure (PSI)Max. Viscosity (cps)Max. Strokes per MinuteFlow ControlTurn Down RatioHead / FittingsHead TubingValve BallsDiaphragmValve / Seat / O-ringConnectionsMotorSpring woundPower SupplyFiltration PropertiesBasis WeightRetention RateHerzberg RateThicknessCapillary RisePressure DropPenetrationAsh ContentField of ViewEmissivityProbe LengthCable LengthMax. TimeTiming CapacityTimer ChannelsTiming FunctionsMax. Controlled Time SettingsHoldsPlacesHole SizeRows/ColumnsAutoclavableHeightRim to PlateInner DiameterOuter DiameterTop I.D.Stem LengthStem I.D.Stem O.D.BaseBodyCamera PortCondenserCustom Fluorescence FiltersDioptric AdjustmentEyepiecesEyepiece TypeEyepiece MagnificationFluorescence Filter CubesFocusingHeadHorizontal Base PoleIlluminationInfinity OpticsInterpupillary AdjustmentMagnificationNosepieceNumerical ApertureObjective MagnificationObjective TypeOptical SystemPod Ring I.D.Sample ClearanceStageStage ClipsStage InsertStage PlateStandVertical Base PoleVertical TravelViewing HeadWarrantyWorking DistanceZoom Range (Primary)For ModelsNotesgear for 1 day rotation, gear for 7 day rotation, red felt-tipped pen, blue felt-tipped pen, roll of 7-day paper, C battery (1)IncludesUnit SizePack QuantityCase QuantityPackagingOverall DimensionsNet Weight