Blackbody Calibration Source for Infrared Temperature Sensors


  • Variable temperature 30°C to 550°C
  • Extremely high emissivity > 0.995
  • 65 mm diameter cavity
  • Built-in indicators for control temperature and cavity temperature
  • Includes platinum resistance thermometer and calibration certificate
  • Not designed or approved for fever detection

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The BB976 Portable Blackbody Calibration Source allows for calibration of non-contact infrared thermometers over the temperature range 30°C to 550°C. It is suitable for use as a primary radiation source for infrared thermometers.
Laboratory performance and low uncertainty calibrations are ensured by the combination of high emissivity and excellent temperature uniformity.
The digital temperature controller allows the block temperature to be set to any value from 30°C to 550°C.
A separate, built-in temperature indicator and included platinum resistance thermometer provide traceability of the true radiance temperature.
A three point traceable calibration certificate is included. UKAS calibration of the resistance thermometer is available, as is radiometric calibration.
Uniformity of the block is ensured by using distributed heating technology. For the smallest of uncertainties, the BB976 may be used with optional ITS-90 Fixed Point Cells, Gallium 29.7646°C, Indium 156.5985°C, Tin 231.928°C and Zinc 419.527°C. The cells are provided with a certificate of metal purity.

General Specifications

Temperature Range
30°C to 550°C
Greater than 0.995
Display Resolution
0.01°C (up to 99.99);
0.1°C (from 100 to 550)
Heating Time
45 minutes
Aperture Diameter
65 mm
Cavity Depth
160 mm
PC Interface
1000 W typical
100-130 or 208-240 V AC (please specify required voltage), 50/60 Hz
H 310 mm, W 265 mm, D 200 mm
10 kg

Dimensions (mm)

Orifice Plates

Restricts the size of the aperture to 10-50 mm. Set of 5 plates.

Carrying Case

Hard carrying case for BB976 with internal padding to protect the blackbody in transit.

ITS-90 Fixed Point Cells

Hockey-puck-shaped cell for blackbody cavity. Provides an extremely precise temperature for calibration. Choice of materials:

  • Gallium 29.7646°C
  • Indium 156.5985°C
  • Tin 231.928°C
  • Zinc 419.527°C

Includes certificate of metal purity.

Order model BB976 and specify the required supply voltage (100-130 or 208-240 V AC).

Includes temperature controller, separate built-in temperature indicator, PC interface and software, platinum resistance thermometer and three point traceable calibration certificate