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TOOLS & INSTRUMENTS

# Radiance temperature calibration laboratory

Radiance Temperature Calibration Laboratory is used for the calibration of radiation thermometers, tungsten-strip lamps and heat flux gauges.

## Specifications/Capabilities

A radiation thermometer centered at 655.3 nm is calibrated using the detector-based temperature of a gold freezing temperature blackbody. The temperature scale is maintained using a vacuum strip lamp, and the temperature of a 25.4 mm diameter variable-temperature blackbody (VTBB) is assigned by comparisons using the radiation thermometer. This high emissivity (> 0.9985) VTBB is also used for heat flux gauge calibrations.

Optical / photometry / laser metrology

## Organizations

                          - NIST Headquarters
                            - Laboratory Programs
                              - Physical Measurement Laboratory
                                - Sensor Science Division
                                  - Optical Radiation Group

## Details

## Contact

                    -  Jay H. Hendricks  jay.hendricks@nist.gov      (301) 975-4836   
                    -  Howard W. Yoon  howard.yoon@nist.gov      (301) 975-2482   

## Related Tools & Instruments

Advanced infrared radiometry and imaging (AIRI)

## Related Projects

Radiation Thermometry

## Related Publications

FASCAL 2: A New NIST Facility for the Calibration of the Spectral Irradiance of Sources

### HEADQUARTERS

301-975-2000

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