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Emissivity Tables for Infrared Thermometers

From Clark Solutions
 

 
nderstanding an object's emissivity, or its characteristic "radiance" is a critical component in the proper handling of infrared measurements. Concisely, emissivity is the ratio of radiation emitted by a surface or blackbody and its theoretical radiation predicted from Planck's law [W(L,T)=C1/(L^5*(exp(C2/LT)-1)]. A material's surface emissivity is measured by the amount of energy emitted when the surface is directly observed. There are many variables that affect a specific object's emissivity, such as the wavelength of interest, field of view, the geometric shape of the blackbody, and temperature. However, for the purposes and applications of the infrared thermometer user, a comprehensive table showing the emissivity at corresponding temperatures of various surfaces and objects is displayed.
Products & Services
Noncontact infrared temperature sensors absorb ambient infrared (IR) radiation given off by a heated surface. They are used in applications where direct temperature measurement is not possible. Search by Specification | Learn more about Noncontact Infrared Temperature Sensors
Temperature controllers accept inputs from temperature sensors or thermometers, and then output a control signal to keep the temperature at the desired level. Search by Specification | Learn more about Temperature Controllers
Thermostats and thermal switches are electro-mechanical on/off switches that are activated by temperature changes. They are typically used to control heating and cooling systems. Search by Specification | Learn more about Thermostats and Thermal Switches
Temperature instruments use contact or noncontact methods to measure temperature. Products include dial, digital, industrial and laboratory thermometers; temperature probes, indicators, and sensors; RTD elements and transmitters; and thermistors, thermocouples, thermopiles, and thermal switches.  Search by Specification | Learn more about Temperature Instruments
RTD temperature probes convert the RTD resistance measurement to a current signal, eliminating the problems inherent in RTD signal transmission via lead resistance.  Search by Specification | Learn more about RTD Temperature Probes
Product Announcements
Isotech North America - Blackbody Calibrator
Blackbody Calibrator, 970 PEGASUS R - High Temperature Blackbody Source 150°C to 1200°C (2192°F) Includes External Reference Probe Ideal for Raytek ST, MX & CI Series thermometers... (read more)
Exergen Corp. - DX Series Precision IR Thermometer
Introducing the new DX-Series, a family of affordable, high-precision, emissivity-free infrared thermometers. A continuation of the popular D-Series family of handheld IR microscanners, the DX-Series... (read more)
Palmer Wahl Instrumentation Group - M20 Fixed IR Thermometer
All M20 models feature: • Single-Wire Interface • Target Sizes from 1/2 mm • Micropower Circuitry • 100% Field Interchangeable • All Common Outputs • Extremely... (read more)
Fluke Corporation, Hart Scientific Division - Precision Infrared Temperature Calibrator : 418X
The 4180 Series of Precision Infrared Calibrators for infrared thermometers is fast, accurate, and easy to use. Commonly called a blackbody calibrator, 4180 comes with an accredited calibration from... (read more)
Topics of Interest
Emissivity is the measure of an object's ability to emit infrared energy. Emitted energy indicates the temperature of the object. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). (Read More)
Infrared Thermometer: What is an Infrared Thermometer? An infrared thermometer is a non-contact temperature measurement device. Infrared Thermometers detect the infrared energy emitted by all... (Read More)
There has been little discussion about infrared ("IR") thermography's ability to determine the temperatures of heating liquids and gas within piping assemblies. Determining accurate emissivity values... (Read More)
In infrared thermal imaging, the temperatures are computed from the measured IR radiation according to Planck's law, modified by corrections due to the camera (detector response, transmission of... (Read More)
Real world infrared needs real world emissivities. What is the emissivity of a certain manufacturer's disconnect? How about an aluminum connection on the load or line side of a molded case breaker?... (Read More)
See more product announcements for Noncontact Infrared Temperature Sensors
Extech EX-830 Clamp Meters w/ Infrared Thermometer

Extech EX-830 Clamp Meters w/ Infrared Thermometer
Fotronic Corporation / Test Equipment Depot


Extech 42530 Infrared Thermometer w/ Laser Pointer

Extech 42530 Infrared Thermometer w/ Laser Pointer
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Fluke 62 Mini Infrared Thermometer

Fluke 62 Mini Infrared Thermometer
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11 See more product announcements for Noncontact Infrared Temperature Sensors