Human Skin Temperature Blackbody Calibration Unit

Human Skin Temperature Blackbody Calibration Unit


The Wahl HSB50 Portable Blackbody Calibration Verification Unit for Human Skin Temperature can be used as a portable high accuracy reference device to verify the readings of hand-held non-contact infrared thermometers or thermal imaging cameras, or as a background reference for thermal imaging or elevated skin temperature scanning systems, providing greater accuracy in skin temperature measurements.  This model features a unique, lightweight design with a compact footprint and built-in carry handle for easy transportation

The Wahl HSB50  has a fixed emissivity of 0.98 designed specifically for calibrating infrared temperature sensors to measure at human skin temperature.  The emitting area is 2.83 inches (72 mm) square and features extremely high sensitivity, stability, and uniformity.

The HSB50 has an accuracy of ±0.05°C at 98.6°F (37°C), and is NIST Calibrated with a transfer standard at time of manufacture so that no error or offset is required.

WIth non-skid feet for use on any horizontal surface, or use the included tripod seat for temporary or permanent mounting.  With an 85 to 250VAC power supply and included six-foot cord with selectable plug, the HSB50 can be used around the world without additional equipment. Choose your temperature scale (°F or °C), power connector plug, and options to configure your unit for your location and application.

Shipped with 1 spare glass tube fuse and microfiber cloth for cleaning the emitting area.

NIST Calibration Certificate is included with the purchase of this unit.

View Data Sheet

View User Manual

Additional information

Weight 144 oz
Dimensions 13 × 13 × 9 in
Temperature Scale

°F, °C

Optional PC Interface

No Interface, RS485 PC Interface

Power Connector

North American Power Cord, IEC320 to NEMA 5-15P, 6 ft, Brazil Power Cord, IEC320 to 3P, 6 ft, China, AU & NZ Power Cord, IEC320 to AS3112, 6 ft, EU Power Cord, IEC320 to CEE 7/7, 6 ft, UK Power Cord, IEC320 to BS1363, 6 ft, Other

Temperature Range

Ambient + 5° to 50°C
Ambient + 5° to 122°F


User Adjustable

Display Resolution

0.1°F or 0.1°C

Aperature (Target Size)

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


0.98 ± 0.002 – emissivity of human skin (@ 8 to 14 μm)


8 to 14 microns

Calibration Method



± 0.05°C @ 37.0°C (98.6°F)


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


± 0.1°C

Warm-Up Time @ 23°C

10 minutes, after stabilizing at ambient before start-up


30 Watts


85 to 250 VAC


H: 5 inches x W: 5 inches x D: 7 inches (H: 127mm x W: 127mm x D: 177.8 mm)


9.25 pounds (4.2 kg)


Built-in Handle, lightweight and easy to carry


Bench Top or Tripod Mount (1/4" x 20 UNC Thread)