Human Skin Temperature Portable Black Body Infrared Calibration Unit

The HSB50 can be used as a high accuracy reference device to verify the reading of hand held infrared thermometers or thermal cameras, or as a background reference to provide greater accuracy in measurements taken by thermal imaging temperature scanning systems.


The HSB50 is a portable blackbody calibration unit designed especially for infrared temperature units measuring skin temperature.  Accuracy is ±0.05°C and emissivity is 0.98 - the same emissivity as human skin.  The HSB50 will maintain accuracy at 98.6°F (37°C) with virtually no error or offset because of the highly accurate non-contact transfer standard we use in production.  Each unit comes with a NIST Traceable Certificate of Conformance at each of three critical temperature points; return your unit annually for calibration.

Optional RS485 PC Interface Port.  Choose °F or °C, and North American, Brazilian, Chinese, EU, or UK power connectors; others available upon request.

Spec Sheet

User Manual


Temperature Range

Ambient ± 5° to 50°C (±9° to 122°F)


User Adjustable

Display Resolution

0.1°C or 0.1°F

Aperature (Target Size)

2.83 inches x 2.83 inches (72 mm x 72 mm) Square Plate


0.98 ± 0.002 (emissivity of human skin)

Spectral Range

8 to 14 microns

Calibration Method

Pyrometric calibration with a highly accurate non-contact transfer standard


± 0.05°C @ 37.0°C (98.6°F)


± 0.15°C, within a central area diameter of 2 inches (51 mm)


± 0.1°C

Warm-Up Time @ 23°C

10 minutes, after stabilizing at ambient before start up


30 Watts

Power Connector

IEC320 with appropriate power connector for country. Available power connectors include North American, Brazilian, Chinese, EU, UK, or special order.


85 to 250VAC


5 inches high x 5 inches wide x 7 inches deep (127 mm high x 127 mm wide x 177.8 mm deep)


9.25 pounds (4.2 kg)


Built-in handle. Lightweight and easy to carry.


Benchtop or Tripod mount (via 1/4 inch x 20 UNC Thread)

PC Interface

Optional at time of purchase


NIST Traceable Certificate of Conformance at three points: 98.6°F (36.0°C), 98.6°F (37.0°C), and 100.4°F (38.0°C). All purpose microfiber cleaning cloth ( 8 inches x 8 inches) in zip close pouch. Replacement Fuse, 1 Amp.


3 Year Warranty covers defects in materials and workmanship

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