Omega Engineering OS534, OS530HR, OS531, OS53X-CF, OS524, OS533 Figure C-1. Determining Emissivity

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CAppendix: Determining an Unknown Emissivity

Method 3

1.Use this method to measure objects at temperatures below 500°F (260°C).

2.Place a large piece of masking tape on the object (or at least a sample of the object material). Allow time for the masking tape to reach the object temperature.

3.Set the emissivity of the thermometer to 0.95. Use the thermometer to measure and record the temperature of the masking tape - Area ‘A’ in Figure C-1. Make sure that the area of the object covered with masking tape fills the FOV of the thermometer.

Area 'A'

Target

Area 'B'

Target

Figure C-1. Determining Emissivity

4.Aim the thermometer at Area ‘B’ as shown in Figure C-1 Make sure that Area ‘B’ is as close as possible to Area ‘A’.

5.Adjust the emissivity of the thermometer until the temperature reading equals the temperature found in Step 3.

C-2

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Contents User’s Guide Servicing Europe Servicing North AmericaFor immediate technical or application assistance Unpacking Instructions Model No Description Page Unpacking Instructions Chapter General Description Contents General Description Introduction Features OS531 OS532 OS533 OS534 OS530HR OS530L-CF Features OS523 OS524 Front of the Thermometer Parts of the ThermometerDisplay Details Key OS530 Series Handheld Infrared Thermometer Rear View Rear of the ThermometerGeneral Description Ac Power Operation Battery OperationOS530/OS520 Series with Built-in Laser Sighting Operating the ThermometerField of View OS531, OS532, OS530L Field of View OS534, OS523-1 Field of View OS523-2 10 Field of View OS524 Trigger Measurement Techniques11 Recorder Hookup If the trigger is pulled two times in rapid sequence Real Time Mode Active OperationRecall Mode 13. Visual Function Flow Chart Using the Lock Function Adjusting EmissivityTurning on the Display Backlighting Calculating Temperature ValuesChanging the Temperature from F to C or vice versa Thermocouple Input OS532, OS533, OS534 If you are not in High Alarm Display Mode HAL when Using the Alarm FunctionsTo set the low alarm value OS533, OS534, OS523, OS524 To disable this mode, press the key again Icon disappears One Stop Bit Key to decrement the printing interval. System Requirements Irtempsoft Connecting the IR-System to the PC Using the Handheld Infrared Thermometer Storing the Temperature Data on Command OS534, OS523, OS524 Erasing the Temperature Data from Memory Mode Recall Mode Passive OperationFunctional Flow Chart Recall Mode Reviewing the Last Parameters AMB temperature MEM locationPRN F Using the Handheld Infrared Thermometer Laser Sighting Rear View DescriptionLaser Dot Operating the Laser SightingLines of Sight of the Laser Sighting and Thermometer Sighting Scope Installing and Operating the Sighting ScopeInstalling the Sighting Scope Maintenance Replacing the Batteries Safety WarningServicing the Laser Sighting Cleaning the LensCalibrating the Thermometer Problem Solution Troubleshooting GuideProblem If you see an error code, either Target are offset by design Specifications Specifications are for all models except where notedOS533, OS534, OS523, OS524 No Laser Sighting 17 hours continuous Laser Sighting Glossary of Key Strokes Glossary of Key Strokes Appendix How Infrared Thermometry Works a Thermal RadiationBlackbody Calculating Temperature Optics Field of View Appendix Emissivity Values MetalsMaterial Emissivity ε NonmetalsAppendix Determining an Unknown Emissivity Figure C-1. Determining Emissivity Figure C-2. Determining Emissivity with a Drilled Hole Appendix Determining an Unknown Emissivity Index Field of View Diagrams Recall WARRANTY/DISCLAIMER PH/CONDUCTIVITY Shop online at omega.com