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The Hart Scientific 9135 is an affordable 3-Point Infrared (IR) Blackbody Calibration Source.
The 9135 includes three set-points at 50°C, 100°C, and 150°C. Simply select a temperature, wait for the ready light to come on, aim your thermometer at the 1.5 inch-diameter blackbody, and take a reading. Set-points can be reached in less than 5 minutes, and stabilization time is only 3 minutes. It doesn’t get any easier—or any faster.
Accuracy at any of the 9135’s three set-points is better than ±1°C, and stability is within ±0.1°C. Emissivity of the black-body target is 0.95.
At less than 2 inches thick and weighing less than 2 pounds, the 9135 is absolutely portable. It fits easily into a tool kit for on-site calibrations. Use it to check an IR thermometer at 1 temperature or to estimate its span error by checking at 50°C and 150°C.
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