High Emissivity 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.


  • High emissivity
  • Communication ports: RS232, Ethernet, GPIB (optional)
  • NIST traceable
  • Touch screen user interface
  • Long term temperature stability
  • Computerized and fully automatic calibration
  • Rapid warm-up and coll
  • Large color LCD display
  • Windows CE operating system


  • Motorised Aperture wheel (RAD)
  • Variable frequency radiation modulator (chopper)
  • Filter wheel – manual (MF), motorised (RFD)
  • Customised aperture wheel


Model No.

SR-200N 32

SR-200N 33

Aperture 1 inch
Temperature range 50-1000°C 50-1200°C
Temperature accuracy ±2C
Temperature stability Short term(±0.25°C

Long term(>1 hour): ±0.4°C

Emissivity 0.99±0.01
Power consumption 1500W max
Aperture wheel 0.8, 1.6, 3.2, 6.4, 9.5, 12.7, 15.9, 22.2 mmdia. apertures
Communication ports RS232, Ethernet, GPIB(optional)
Power supply 230/115 VAC, 50/60 Hz
Weight Head: 7Kg,  Controller: 10Kg
Dimensions Head: 195 x 329 x 214 mm,  Controller: 342 x 310 x 133 mm  
Operating ambient Temperature 0° … 50°