IR-574/301 Blackbody System

The IR-574 Series blackbody reference sources are designed to provide infrared radiation as an ideal blackbody emitter. The output energy from the 2.25" Cavity closely follows the theoretical maximum energy curve described by Max Planck's equation, and allow users to calibrate, align, and measure infrared devices and phenoma of all types. Using the integral aperture wheel, the infrared flux can be varied by known amounts without disturbing critical optical setups, and combining apertures and distance changes, the flux at any point can easily be determined. The IR-574 is an ideal source for the Near (1-3 um), Mid (3-8) and Far (8-30+ um) infrared bands. The IR-574 extends the temperature range to 1200ºC by using special SiC cavity materials with high emissivity.

The 20º tapered - recessed - cone, surface emissivity, and cavity aspect ratio combine to provide blackbody radiation by multiple reflection, absorption and re-emission of it's thermal energy. The thermal energy of the cavity is provided by a ceramic-sealed heater coil that uniformly heats the cavity cylinder to temperatures from 50ºC to 1200ºC. The IR-574 is covered by a one-year warranty.

Temperature Range:
50 – 1200 C
Emittance Watts/Cm^2 (Watts):
26.68   (684)
Wavelength Range:
0.5 - 99um
Emitter Size: in (mm)
2.25" (57)
Source Type:
Temperature Resolution:
0.1 C
Calibration Accuracy:
+/- 0.2 C to NIST Standard
Stability: Short (Long) Term:
+/- 0.1 C  (+/- 0.2C)
Response Time:
100-1200  <80 Minutes
Temperature Sensors:
Embedded 0.01% Matched Type S
Control Type:
Active Multi-Band P.I.D.
Line Voltage:
90 to 125 or 208-240 VAC 50-60 Hz
Power Requirements:
1400 Watts Max
Cable Length:
8 Feet  (2.4 m)
Dimensions: in (mm)     Source:
12.5” H x 20” D x 10” W (317x508x254)
5.1"H x 13.4"D x 12"W (130x340x304)
1 Year
Standard Apertures:
2.0" (50.8)
Remote Interface:
RS-232 or IEEE-488/GPIB
Source: 45lbs
Controller: 9 lbs (Rackmounted 10 lbs)
Shipping Weight :
2 Boxes; 63 lbs



Options and Additional Accessories:
RS232 or IEEE/GPIB Communications
2” Remote Control Motorized Indexed Aperture Wheel
2" 5 Position Manual Aperture Wheel
Rackmount for Controller


Additional Product Information
Dimension Drawings [PDF]