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SR-200N: High Temperature Cavity Blackbody

The SR-200N is a highly reliable and durable cavity blackbody. The SR-200N unique design permits rapid warm-up and cooling. It’s unique controller enables the addition of numerous options.The SR-200N operates using the controller’s touch keys located on its front panel and may also be controlled by a computer. In order to keep its accuracy and NIST traceability, it is recommended to recalibrate the SR-200N yearly.

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  • High emissivity
  • Fast warm-up and cool-down
  • Long-term temperature stability
  • Manual aperture wheel included
  • NIST-traceable calibration
  • Computerized and fully automatic calibration
  • Quick calibration procedure by replacing the removable sensor
  • Head and controller interchangeable
  • Large color LCD display with touchscreen user interface
  • Remote control software included
  • Compact, portable controller
  • 19" rack-mount kit included for the controller
  • RAD: Motorized Aperture Wheel with standard aperture sizes (3)
  • MF: Manual Filter Wheel
  • RFD: Motorized Filter Wheel
  • Chopper (Variable Frequency Radiation Modulator), Motorized
  • Custom-Sized Apertures
  • Optional Communication Port: GPIB


SR-200N-33  see note (2)

Aperture Diameter



Temperature Range

50 – 1000 °C

50 – 1200 °C

Set Point & Readout Resolution

1 °C

Temperature Accuracy

± 2 °C

Temperature Stability

± 0.50 °C


0.99 ± 0.01

Aperture Wheel Standard Aperture Diameters  (3)

0.8, 1.6, 3.2, 6.4, 9.5, 12.7, 15.9, 22.2 mm

Communication Ports

Ethernet,  RS232  (GPIB optional)

Power Consumption (maximum)

1000 W

Operating Voltage

220 VAC or 110 VAC (50/60 Hz)

Size, Blackbody Head (Height x Width x Depth)  (4)

22 x 20 x 33 cm

Weight, Blackbody Head  (4)

7 kg

Size, Controller (Height x Width x Depth)  (4)

15 x 34 x 35 cm

Weight, Controller  (4)

10 kg

Operating Temperature

0 to 50 °C


  • All values are valid at an ambient temperature of 25°C, in a non-condensing environment.
  • The SR-200N-33-220V model includes a transformer.
  • Custom-sized apertures available upon request.
  • All mechanical sizes are approximate. Please contact CI Systems for an ICD with exact dimensions.
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