Measured ParameterDirectional hemispherical reflectance (DHR)MethodIntegrated total reflectance in a band for a given angle of incidenceMeasured ValueAbsolute reflectance (0–1)Calculated ValueTotal reflectance, absorptanceWavelength Bands850nm, 905nm, 940nm, and 1550nm nmAngle of Incidence20° from normal incidence °Calibration CouponGlazed CeramicAccuracy±0.02Repeatability±0.005 unitsBeam Spot Size0.50 inchesSample Size and GeometryFlat ≥0.5 in. diameter; Curved ±0.5 in. concave; ±12 in. concaveWarm Up Time90 secondsTime Between Measurements2 secondsSample Temperature-90 ~ 90 °C (ambient or heated/cooled)Operating Temp0 ~ 40 °CStorage Temp-25 ~ 70 °CRun Time2 hours on one battery; battery easily replaced with continuous operation after battery replacementPower SourceRechargeable battery (standard environmentally friendly NiMH)Battery Recharge Time1 hourIR SourceKanthal filament operated at about 1000°CWeight4.7 lbForm Factor11.5H × 9.0W × 3.7D in (29.21 cm × 22.86 cm × 9.44 cm)Operator InterfaceLCD graphics screen, 1/4 VGA, touch screen, software buttons, trigger switch in handleDiagnosticsOn-screen status and signal monitor. Signal values stored with data. Raw data collection and display.Data FormatData files can be opened and post processed with Excel or a text processorData StorageRemovable SanDisk (SD) cardExport ControlECCN 3A999F