Omega Speaker Systems OS550 Series manual Appendix Determining an Unknown Emissivity C, Method

Page 69

Appendix: Determining an Unknown Emissivity C

In Appendix A, we showed how emissivity is an important parameter in calculating the temperature of an object via infrared means. In this section we discuss how to determine a specific emissivity value. If you know the material of the object, use Table B-1 in Appendix B to look up its approximate emissivity. Most organic materials such as plastics, cloth, or wood have an emissivity of about 0.95. For this reason, we use 0.95 as the default emissivity setting in the OS551/OS552, OS553 and OS554 Thermometers.

For objects of unknown material or for very precise measurements, use one of the following methods to determine a specific emissivity value.

Method 1

1.Measure and record the temperature of the object using a contact temperature probe such as a thermocouple or RTD.

2.Aim the thermometer at the object.

3.Adjust the emissivity until the temperature reading of the thermometer equals the temperature measured in Step 1.

Method 2

1.Heat the object (or at least a sample of the object material) on top of a heating plate to a known temperature. Make sure the thermometer and the air surrounding the heating plate are at the same temperature.

2.Measure the temperature of the object material with the thermometer. Make sure that the object fills the FOV of the thermometer.

3.Adjust the emissivity until the temperature reading of the thermometer equals the known temperature of Step 1.

C-1

Image 69
Contents User’s Guide Servicing North America For immediate technical or application assistanceServicing Europe Model No Description This page is intentionally blank Unpacking Instructions Chapter General Description Chapter Maintenance General Description Introduction Thermometer Features 750 Parts of the Thermometer/Transmitter Sensor Head Installation Installing the Infrared Thermometer InstallationSensor Head Dimensions Sensor Head DimensionsMain Display Nema Housing with Mounting Brackets Dimensions OS550 Display Electronics DimensionsOEM Style Main Display with Mounting Plate OS550-BB Series Display Mounting DimensionsMounting Nut Dimensions OS550-MN Mounting Bracket Dimensions OS550-MBAir Purge Collar Dimensions OS550-AP Mounting Flange Dimensions OS550-MFUsing the Infrared Thermometer Using the Infrared Thermometer1 OS550 Series Cable Connection How To Power the ThermometerField of View Positions Operating The ThermometerDS = Field of View ChartsOS550 Series -3 FOV Spot DIA.* Spot DIA.* MM Distance Sensor to Object FT Measurement Techniques Using the Infrared Thermometer/Transmitter 11. General Operational Block Diagram Real Time Mode Active OperationReal Time Mode Visual Function Flow Chart Adjusting Emissivity Calculating Temperature Values Using the Alarm Functions To set the low alarm value OS552, OS553, OS554 To disable this mode, press the key again Icon disappears One Stop Bit Serial Printer Software Installation System Requirements Irtempsoft Connecting the IR-System to the PC Using the Infrared Thermometer/Transmitter Storing the Temperature Data on Command OS553, OS554 Erasing the Temperature Data from Memory Real Time Mode Active Recall Mode Passive OperationRecall Mode Reviewing the Last Parameters Using the Infrared Thermometer/Transmitter Reviewing Previously Stored Temperature Data OS553, OS554 Using the Infrared Thermometer/Transmitter Laser Sight Accessory Description Operating the Laser Sight Laser Sight Accessory Maintenance Cleaning the Sensor Head LensCalibrating the Thermometer Maintenance Problem Solution Troubleshooting GuideProblem Minutes for the thermometer to stabilize Troubleshooting Guide Specifications Specifications are for all models except where notedOS552, OS553 Low alarm standard, with OS554 MV/degree C or F Analog Output Vdc Analog OutputMA Analog Output Laser Sight Accessory OS550-LS Glossary of Key Strokes Glossary of Key Strokes Appendix How Infrared Thermometry Works a Thermal RadiationBlackbody Calculating Temperature Optics Field of View Metals Material Emissivity ε NonmetalsMethod Appendix Determining an Unknown Emissivity CWith masking tape fills the FOV of the thermometer Figure C-2. Determining Emissivity with a Drilled Hole Addendum Addendum to OS550/OS550-BB Manual Sensor Index Index WARRANTY/DISCLAIMER PH/CONDUCTIVITY Shop online at omega.com

OS550-BB Series, OS550 Series specifications

The Omega Speaker Systems OS550 Series and OS550-BB Series represent the forefront of audio innovation designed for both casual listeners and audiophiles alike. These speaker systems are engineered to deliver exceptional sound quality, featuring advanced technologies that enhance audio performance and user experience.

One of the standout features of the OS550 Series is its robust build quality, which includes a combination of high-quality materials and meticulous engineering. The cabinets are constructed from durable MDF to minimize resonance and distortions. This ensures that the speakers produce clear, accurate sound across all frequencies. The OS550 speakers are equipped with high-end woofers that provide deep, resonant bass, while the tweeters deliver crisp, articulate highs, resulting in a balanced audio presentation.

In addition to superior build quality, the OS550 Series incorporates innovative sound technologies. The inclusion of advanced crossover networks optimally manages the distribution of frequencies between woofers and tweeters, enhancing overall clarity and detail. This technology helps to create a more immersive listening experience, whether users are enjoying music, podcasts, or movie soundtracks.

The OS550-BB Series offers additional versatility, featuring Bluetooth connectivity for seamless streaming from a variety of devices. This series is designed for users who prioritize convenience without sacrificing audio quality. The Bluetooth integration allows for easy pairing with smartphones, tablets, and computers, making it an ideal choice for modern audio setups.

Both series benefit from refined acoustics, with tuned ports that improve airflow and minimize distortion. This attention to detail allows the speakers to perform exceptionally well in various environments, whether used in a dedicated home theater or as part of a casual living space setup.

Moreover, the OS550 and OS550-BB Series are designed with user-friendliness in mind. They feature simple-to-use controls and options for wall mounting, providing flexibility in placement. This enables users to optimize their listening environment according to their preferences.

In short, the Omega Speaker Systems OS550 Series and OS550-BB Series are distinguished by their combination of high-quality construction, advanced audio technologies, and user-focused features. These speaker systems are perfect for anyone looking to elevate their audio experience, making them an impressive addition to any home audio setup. With their exceptional performance and versatility, they are sure to satisfy even the most discerning listeners.