RayTek ThermoView Ti30 user manual Distance to spot ratio, Field-of-view

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temperature of a shiny object you can compensate by covering the surface to be measured with masking tape or flat black paint. Allow time for the tape or paint to reach the same temperature as the material underneath. Measure the temperature of the taped or painted surface. That is the true temperature.

Distance to spot ratio

The optical system of an infrared thermometer collects the infrared energy from a circular measurement spot and focuses it on the detector. Optical resolution is defined by the ratio of the distance from instrument to the object compared to the size of the spot being measured (D:S ratio). The larger the ratio number the better the instrument’s resolution, and the smaller the spot size that can be measured. The laser sighting included in some instruments only helps to aim at the measured spot.

A recent innovation in infrared optics is the addition of a Close Focus feature, which provides accurate measurement of small target areas without including unwanted background temperatures.

Field-of-view.

Make sure that the target is larger than the spot size the unit is measuring. The smaller the target, the closer you should be to it. When accuracy is critical make sure

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Contents User’s Manual ThermoView Ti30Contents Qualitative and Quantitative Temperature Measurements Appendix B Infrared Theory Q&A Glossary Warranty Information Customer Service Contact Information Introduction Netd Quick Specifications TableUnpacking Your New Imager First, the Batteries Removing the Battery PackBattery Packs Normal Charge Cycle Charging the Rechargeable Battery PackDocking Station LED Indicators Attaching the Wrist Strap Getting StartedDisplaying Images Turning the Unit OnInformation Screen Normal Mode Keypad Settings and ControlsThermoView Imager Settings Switches icons not shown Laser On/Off Toggle Button ThermoView Imager Settings SwitchesLaser Aperture and Optical Channel JapanesePalette Switch LCD Backlight Illumination SwitchMeasurement Mode Switch Centigrade/Fahrenheit Toggle ButtonFocus Wheel Gain and Level ThumbwheelsAutomatic Semi Automatic Level pointLocation of the Focus Wheel TriggerMain Loop Man Machine Interface Flow ChartsImage Recording Procedure Emissivity Adjustment Procedure July 1 Version Recording an Image Quick Image Fix Procedure Array Recalibration ProcedureRetrieving an Image Retrieve ModeDownloading and Looking at Images Installing the SoftwareHooking Up the Docking Station Connecting the Docking Station to Your ComputerConnecting the USB Connector to the USB Port InsideIR Main Screen at Program Launch Sync button Downloading ImagesDownload Data Screen Saving ImagesContents of Images Folder Setting the Imager ClockJuly 1 Version Looking at Your Downloaded Images Field USB PortViewing Thumbnail Images Viewing a Single Image Obtaining the Best Image Importance of FocusingSelecting the Color Palette Selecting the Measurement ModeLevelGain Min Level Gain Max Level Gain Tip Distance to Target Spot Ratio Qualitative and Quantitative Temperature MeasurementsField-of-View Optical DiagramDS ratio D / S = Environmental Conditions Ambient TemperaturesEmissivity Reflected Temperature CompensationReflected Temperature Compensation File Management Organizing Your DataUploading Data to Your ThermoView Ti30 Imager Uploading Data to the ImagerEditing Data Before Upload RTC OFF Single Image Screen Analyzing Your DataScale Limits Sample Image at Original Scale Limits Isotherms Sample Image at Original Isotherm SettingAdditional Image Analysis Tools Temperature Table TabProfile Tab Temperature TableProfile Tab Histogram TabNew Folder Menu BarExit ThermoView Imager InfoFahrenheit CelsiusExport Image Export Temperature TableCreate Report HistogramContents Copy Profile ChartCascade Tile HorizontalThermographic Report Reporting Your FindingsAppendix a Technical Reference Imager Accuracy ChartTypical Emissivity Values Imager Reading Error vs Source DSAluminum Unoxidized Ni-Cu Gob Appendix B Infrared Theory Q&A Why use noncontact infrared thermometers?How does IR work? Emissivity How to assure accurate temperature measurement?Field-of-view Distance to spot ratioWhat are the most popular applications? How to take temperature measurement?Glossary Blackbody Background TemperatureCalibration Calibration SourceDrift Display ResolutionEMI/RFI Noise Far FieldFull Scale Focus Point or DistanceFull Scale Accuracy Gray BodyLoop LaserMicron or µm Minimum spot sizeNon-Gray Body Optical ResolutionOptical Pyrometer Pyroelectric DetectorResolution Reflected Temperature CompensationRelative Humidity RepeatabilityTemperature Storage Temperature RangeTemperature Coefficient or Ambient Derating Spectral ResponseThermal Shock Temperature ResolutionTime Constant Transfer Standard