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100°C to 982°C Temperature Blackbody Calibrator

Infrared Calibrator: High Temperature Blackbody Calibration Source


Item# BB-4A

In stock

Lead Time (If not in stock): 6 weeks
Infrared Calibrator: High Temperature Blackbody Calibration Source BB-4A BB-4A
  • Calibrate from 100 to 982°C (212 to 1800°F)
  • Portable Rugged Design
  • Built in Digital PID Autotune Temperature Controller with Temperature Readout
  • NIST Traceable Calibration Certificate Included with Three Data Points

BB-4A Model Options

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Supply Voltage
Temperature Unit
Temperature Min
Temperature Max
Temperature Range
Accuracy Value
Target Size
Communication protocol

This BB-4A is a blackbody temperature reference source which is adjustable over the range from 100 to 982°C (212 to 1800°F) and accurate to ±1°C, ±0.25% rdg. It has a built-in digital temperature controller to provide accurate, stable temperatures as well as to provide the temperature readings of the cavity. The heated cavity provides a target of known temperature and emissivity, and virtually any infrared pyrometer with a spot size diameter less than 22 mm (0.88") can be calibrated. The compact, portable design allows for quick and easy calibration setups. Both models come standard with an RS232 computer interface which allows computer control of the setpoints for automatic test applications. A NIST traceable calibration certificate is also provided.

PLEASE NOTE: Items listed as "Stock" require 5 Business Days for NIST Certification and Order Processing
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What is the diameter of the reference probe well on the back of the BB-4A?

Asked by: ThermoAdam
Hi Adam- I believe you have the wrong idea for what's on the back of this unit. There is no probe well on the back, there is a connection for an external reference probe. The connection is a RSJ-K-R which used with any standard size connector. If you have further questions please contact
Answered by: Application Engineer RD
Date published: 2022-08-16

The reference thermocouple probe at the base of cavity on the rear of the calibrator is reading around 10 degrees F more than the SV and PV. The SV and PV match what the Camera is reading. Does the camera need calibration? Or its fine?

Asked by: SMaini
The port in the back is strictly for reference, and will read higher than the cavity, which is at a calibrated emissivity of .99 so your camera is fine.
Answered by: ApplicationsEngineerANB
Date published: 2023-10-13
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