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MI-210: Standard Field of View Infrared Radiometer with Handheld Meter

Infrared Radiometers

Product Description

The MI-210 has a standard FOV half angle of 22 degrees and the handheld unit displays and stores the current target temperature. Applications include measuring the temperatures of road surfaces, plant canopies, and soil, snow and water surfaces. Measurement of surface temperature is a crucial component of energy transfer. Accurate measurement of the leaf-to-air temperature gradient is essential to the determination of transpiration rate and stomatal conductance in both single leaves and plant canopies.


Calibration Uncertainty (-20 to 65 C):

± 0.3 C, when target and detector temperature are within 20 C

Calibration Uncertainty (-40 to 80 C):

± 0.5 C, when target and detector temperature are different by more than 20 C

Measurement Repeatability:

± 0.1 C

Stability (Long-term Drift):

less than 2 % change in slope per year when germanium filter is maintained in a clean condition

Response Time:

0.6 s, time for detector signal to reach 95 % folloing a step change; meter firmware averaging results in a 3 s response for digital output on meter screen

Field of View:

22° half angle

Spectral Range:

8 to 14 μm; atmospheric window

Operating Environment:

0 to 50 C, less than 90 % non-condensing relative humidity up to 30 C, less than 70 % non-condensing relative humidity from 30 to 50 C

Meter Dimensions:

12.6 cm length, 7.0 cm width, 2.4 cm height

Sensor Dimensions:

2.3 cm diameter and 6.0 cm length


270 g (with radiation shield)


2 m of four conductor, shielded, twisted-pair wire. Additional cable available. Santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions)

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