LS122 IR Power Meter

Special for testing the infrared rejection effect of iInsulating glass and solar film

Used for measuring the infrared radiation intensity and infrared rejection rate together
Convert the IR rejection of the material automatically and displays it directly on the screen
Spectral range: 1000-1700nm (λp=1400nm)

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How to use LS122

LS122 infrared power meter also called infrared energy receiver. This is an instrument with a wide receiving range. It is mainly used to measure the infrared rejection rate of materials. It is suitable for the display of thermal insulation effects of thermal insulation glass, solar film and other materials. It can also be used to measure the radiant energy power density of various light sources, that is, the radiant energy power per square meter with unit W/m².


Parameter LS122 IR Power Meter
Power range 0-40000 W / m²
(H is the standard value)
Infrared rejection rate -999%-100%
Spectral response 1000nm-1700nm
Photosensitive aperture 10mm
Dimension 125mm * 69mm * 24.5mm (L*W*H)
Weight about 140 g (including battery)
Working temperature -20 ° C-+ 70 ° C
Power supply AAA alkaline dry batteries


Applicable for a wide range of materials

The LS122 solar power meter is suitable for testing the infrared rejection performance of architectural film, automobile thermal insulation film, solar film, thermal insulation glass and solar equipment

Primarily for infrared radiation intensity measurement

It can be used to measure the radiation intensity (infrared power density) of infrared light sources (sun, infrared lamps, etc.)

Infrared rejection rate will be displayed on the screen directly

The infrared power meter has a fast measurement speed which can automatically convert the infrared rejection rate of the material. The rejection rate will be displayed on the interface directly for easy reading

Wide spectral response

The solar power meter has wide spectral response which can test the infrared intensity from 1000nm-1700nm wavelength

Operation Video


No. Description Quantity  Unit
1 LS122 Infrared Power  Meter   1 pcs
2 AAA battery 4 pcs
3 User Manual 1 pcs
4 Certificate / warranty card 1 pcs
5 Packing box dimension 21*13*6 cm(L*W*H) 1 pcs
LS122 IR power meter package
LS122 IR power meter package


  1. 1. The difference between LS122 infared power meter and window film transmission meters

    LS122 infrared power meter can test the power (irradiation intensity) of infrared rays, as well as the infrared rejection rate of solar film, glass and other materials.

    The infrared response band of LS122 is 1000-1700nm and the peak value is 1400nm. The infrared rejection rate calculated by the LS122 infrared power meter is the infrared rejection rate in this response wavelength range; while the window film transmission meter (1400nm) tests the infrared rejection rate at 1400nm, so the test data of the two instruments are different. The size is related to the sensitivity of the solar film's transmittance to wavelength changes.