RayTek ThermoView Ti30 user manual LevelGain

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temperature value in the scene (MAX). The MIN and MAX values are displayed at the beginning and at the end of color scale. This mode does not require any other adjustment (other than properly focusing the unit). Automatic mode is recommended every time the user first starts looking at a given target since the temperature limits are unknown. This mode is also recommended when the user is looking for fairly large temperature differences (such as, looking for hot spots in electrical devices).

Note: The Quick Image Fix feature is a sub set of the Automatic mode. This is a convenient feature that fixes the MIN and MAX temperature values and thus creates a more stable thermal image for the user to view. To quick fix the image, simply press the Up button on the keypad once, and the temperature limits will stop adjusting automatically. Fixing the temperature limits provides a more comfortable experience for thermal image evaluation. The thermal boundaries (highest and lowest temperature values) will adjust automatically again when you record another image (see Recording an Image on page 28 for more information) or by pressing the Up button again while in the Automatic measurement mode. The Quick Image Fix feature is active only when the unit is set to Automatic mode.

Different from Automatic mode, Manual and Semi Automatic modes work jointly with two adjustable parameters: Level and Gain. These two parameters are adjustable by using the two thumbwheels located on the switch bay (see Figure 11 on page 20).

LevelGain

Level is defined as the median point of a given temperature scale. For example, if the unit is currently in Automatic mode, and there is a given thermal scene with MIN and MAX temperature limits, the moment you switch the unit to Manual mode, the Level value is set by the unit according to the following formula:

Level

Max Min

2

Gain is defined as a temperature band around the median point of the scale (Level). In the same way described above, if the unit is currently set at Automatic mode, and there is a given thermal scene with MIN and MAX temperature limits, then switching the unit to Manual or Semi Automatic mode causes the Gain value to be set according to the following formula:

Gain

Max Min

2

July 1, 2003

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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 JapaneseCentigrade/Fahrenheit Toggle Button LCD Backlight Illumination SwitchPalette Switch Measurement Mode SwitchLevel point Gain and Level ThumbwheelsFocus Wheel Automatic Semi AutomaticLocation 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 BarCelsius ThermoView Imager InfoExit FahrenheitHistogram Export Temperature TableExport Image Create ReportTile Horizontal Copy Profile ChartContents CascadeThermographic 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 Calibration Source Background TemperatureBlackbody CalibrationFar Field Display ResolutionDrift EMI/RFI NoiseGray Body Focus Point or DistanceFull Scale Full Scale AccuracyMinimum spot size LaserLoop Micron or µmPyroelectric Detector Optical ResolutionNon-Gray Body Optical PyrometerRepeatability Reflected Temperature CompensationResolution Relative HumiditySpectral Response Storage Temperature RangeTemperature Temperature Coefficient or Ambient DeratingTransfer Standard Temperature ResolutionThermal Shock Time Constant