Portable Low Temperature Blackbody Calibration Source

Compact and portable calibration source with very large surface area. Ambient +5 up to 450 °C or 842 °F

Kalibrierstrahler M310-HT View

Key Features

  • Excellent general purpose calibration
  • High emissivity 1.00 effective at 8-14 μm
  • Highly uniform
  • Large aperture (3” diameter)
  • High accuracy, high resolution
  • Excellent stability 0.3 °C per 8 hour period
  • Manufactured and tested to meet rigid quality control standards
  • Furnished with certificate of calibration traceable to NIST
  • RS232 serial communication (included) 


The M310HT is a portable blackbody calibration source utilizing a digital indicating temperature controller that may be set to any temperature between ambient +5 °C and 450 °C (842 °F). A precision RTD temperature sensor is embedded in the blackbody emitter providing high accuracy and repeatability.

The temperature controller uses the industry standard PID algorithms to control the emitter temperature to within +/-0.3 °C. The blackbody emitter mechanism uses a resistive heating device that provides long life, short stabilization times, and stable temperature control.

Temperature set points are altered simply by pressing the up or down arrow buttons on the controller. The lower display (green) is the set point and the upper display (red) is the actual blackbody emitter temperature.

Typical Calibration Applications

  • Infrared Temperature Sensors
  • Infrared Thermal Imaging Systems
  • Spectrographic Analyzers
  • Radiometers
  • Flux Meters


Technical Data

Temperature Range: Ambient +5 °C to 450 °C or 842 °F
Accuracy*: 0.25% of reading ±1 °C
Temperature Resolution: 0.1°
Stability: 0.3 °C per 8 hour period
Cavity: Flat Plate
Aperture Diameter: 76 mm (3.00 in.)
Emissivity: 1.00 effective emissivity at 8-14 μm
Temperature Sensor: Precision platinum RTD
Method of Control: Digital PID Controller
Operating Ambient Temp: 0 to 44 °C (30 to 110 °F)
Operating Humidity: 90% RH max, non-condensing
Power Requirements: 115V AC ±10% 50/60 Hz 920VA fused max., 600W heater (230V AC Optional)
Dimensions (H x W x D): 178 mm x 279 mm x 178 mm (7” x 11” x 7”)
Weight: 5.6 kg (12.4 lbs.)
CE Certified: Yes

*Accuracy calibration performed radiometrically, the uncertainty of emissivity and transfer standard are already included.

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