Reflected Temperature Compensation | RayTek ThermoView Ti30 manual

furnaces, or other heat sources) have a temperature much higher than that of the target. In these situations it is necessary to compensate for the reflected energy from those objects.

Note: The Reflected Temperature Compensation (RTC) feature is disabled if the emissivity is set to 1.00.

To set or change the RTC feature, complete the following steps:

1.You will need an infrared reflector. Take a piece of aluminum foil. Crumple and re- flatten the foil and put it on a cardboard plate, shiny side up.

2.Put the ThermoView Ti30 imager in regular Measurement mode.

3.Press the MODE button once. At this point you will be able to adjust Emissivity.

4.Set the Emissivity value to 1.00.

5.Position the imager at the selected measurement distance from the target to be measured. Aim and focus the unit on the target.

6.Now, place the infrared reflector in the field-of-view of imager. Position the reflector in front of and parallel to the target surface.

7.Measure the apparent surface temperature of the surface of the reflector. This temperature is the reflected temperature of the target. Make a note of this temperature value.

8.It is a good idea to repeat the steps from 5 to 7 and then average the results. Make a note of the average.

9.Press the MODE button one more time. At this point you will be able to adjust the RTC value.

10.Enter the value found on step 8 for RTC, by pressing the Up and Down buttons.

11.To enable the RTC, make sure the set the Emissivity properly, according to the object material. If set at 1.00, the RTC compensation won’t take place.

Figure 31. Reflected Temperature Compensation

July 1, 2003

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RayTek ThermoView Ti30 user manual Reflected Temperature Compensation

Contents

ThermoView Ti30 User’s Manual Contents Qualitative and Quantitative Temperature Measurements Appendix B Infrared Theory Q&A Glossary Warranty Information Customer Service Contact Information Introduction Quick Specifications Table Netd Unpacking Your New Imager Removing the Battery Pack First, the Batteries Battery Packs Charging the Rechargeable Battery Pack Normal Charge Cycle Docking Station LED Indicators Getting Started Attaching the Wrist Strap Turning the Unit On Displaying Images Information Screen Normal Mode Settings and Controls Keypad ThermoView Imager Settings Switches icons not shown ThermoView Imager Settings Switches Laser On/Off Toggle Button Japanese Laser Aperture and Optical Channel Measurement Mode Switch LCD Backlight Illumination SwitchPalette Switch Centigrade/Fahrenheit Toggle Button Automatic Semi Automatic Gain and Level ThumbwheelsFocus Wheel Level point Trigger Location of the Focus Wheel Man Machine Interface Flow Charts Main Loop Image Recording Procedure Emissivity Adjustment Procedure July 1 Version Quick Image Fix Procedure Array Recalibration Procedure Recording an Image Retrieve Mode Retrieving an Image Installing the Software Downloading and Looking at Images Connecting the Docking Station to Your Computer Hooking Up the Docking Station Connecting the USB Connector to the USB Port InsideIR Main Screen at Program Launch Downloading Images Sync button Saving Images Download Data Screen Setting the Imager Clock Contents of Images Folder July 1 Version Field USB Port Looking at Your Downloaded Images Viewing Thumbnail Images Viewing a Single Image Importance of Focusing Obtaining the Best Image Selecting the Measurement Mode Selecting the Color Palette LevelGain Min Level Gain Max Level Gain Tip Qualitative and Quantitative Temperature Measurements Distance to Target Spot Ratio DS ratio D / S = Optical DiagramField-of-View Ambient Temperatures Environmental Conditions Reflected Temperature Compensation Emissivity Reflected Temperature Compensation Organizing Your Data File Management Uploading Data to the Imager Uploading Data to Your ThermoView Ti30 Imager Editing Data Before Upload RTC OFF Scale Limits Analyzing Your DataSingle Image Screen Sample Image at Original Scale Limits Sample Image at Original Isotherm Setting Isotherms Temperature Table Tab Additional Image Analysis Tools Temperature Table Profile Tab Histogram Tab Profile Tab Menu Bar New Folder Fahrenheit ThermoView Imager InfoExit Celsius Create Report Export Temperature TableExport Image Histogram Cascade Copy Profile ChartContents Tile Horizontal Reporting Your Findings Thermographic Report Imager Accuracy Chart Appendix a Technical Reference Imager Reading Error vs Source DS Typical Emissivity Values Aluminum Unoxidized Ni-Cu Gob How does IR work? Why use noncontact infrared thermometers?Appendix B Infrared Theory Q&A How to assure accurate temperature measurement? Emissivity Distance to spot ratio Field-of-view How to take temperature measurement? What are the most popular applications? Glossary Calibration Background TemperatureBlackbody Calibration Source EMI/RFI Noise Display ResolutionDrift Far Field Full Scale Accuracy Focus Point or DistanceFull Scale Gray Body Micron or µm LaserLoop Minimum spot size Optical Pyrometer Optical ResolutionNon-Gray Body Pyroelectric Detector Relative Humidity Reflected Temperature CompensationResolution Repeatability Temperature Coefficient or Ambient Derating Storage Temperature RangeTemperature Spectral Response Time Constant Temperature ResolutionThermal Shock Transfer Standard