LS182 Spectrum Transmission Meter

Seven parameters can be measured

Parallel optical path design allows testing of a wide range of materials with large thicknesses
Large color LCD display for easy to understand readings
Test the SHGC and TSER value

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LS182 spectrum transmission meter is a device that can test the SHGC value (that is, the total solar transmittance, also called the solar heat gain coefficient), 950nm, 1400nm, TSER and Full IR rejection rate, 365nm ultraviolet rejection rate and 380nm-760nm visible light transmittance. The testing principle of the LS182 spectrum transmission meter is to use an ultraviolet light source, a visible light source and an infrared light source to illuminate the measured transparent materials. The sensor detects the incident light intensity of the light source and the light intensity passing through the materials. The ratio is equals to light transmittance which is shown in percentage. For most solar films, the visible light is marked with the transmittance index and the infrared and ultraviolet rays are marked with the rejection rate index. 

The rejection rate = 100% - transmittance


The LS182 spectrum transmission meter has a wide range of applications. Due to its parallel light path and wide test slot, it can be used in the solar film industry to test solar films, laminated glass, etc., as well as various large thickness materials. The instrument is suitable for using on solar film performance exhibition, production, quality inspection, inspection and other occasions.


Parameter Value
UV peak wavelength 365nm
IR peak wavelength 940nm, 1400nm, Full IR , TSER and SHGC
Visible light 380-760nm (conform to CIE photopic luminosity function)
Resolution 0.1%
Measurement accuracy ± 2% (colorless and uniform transparent material)
Test card slot 47mm×91mm (W*H)
Weight about 590g
Dimension 216mm × 134mm × 29mm (L*H*W)
Power supply 5V DC/1A (Type-C)


Seven parameters can be measured

Seven parameters can be measured: 365nm UV rejection rate, 940nm/1400nm/full infrared rejection rates, visible light transmittance,TSER and SHGC total solar transmittance

Large LCD screen to display

The solar film tester has large color LCD display interface which directly display the IR and UV rejection rate

Suitable for testing thick materials

The parallel light path design is used to test large thickness glass with accurate data

Real-time dynamic self-calibration

The spectrum transmission meter has a real-time dynamic self-calibration function, which is automatically calibrated after power-on

USB Type-C port for direct power connection

The SHGC transmission meter has Type-C interface which can be directly connected to mobile power

Provide a support pillar

A support rod is provided to tilt the instrument for easy reading

Qualifications and Standards

Window tint meter certificate
Window tint meter certificate


No. Description Quantity Unit
1 LS182 spectrum transmission meter 1 pcs
2 DC5V Adapter  1 pcs
3 User Manual 1 pcs
4 Certificate / warranty card  1 pcs
5 Support pillar 1 pcs
6 Packing box dimension 34*29*9 cm(L*W*H) 1 pcs
spectrum transmission meter package
spectrum transmission meter package


  1. 1. Why is LS182 so expensive and what advantages does it have compared to other window film transmission meters?

    LS182 can measure seven parameters: UV rejection rate, visible light transmittance, infrared 940nm and infrared 1400nm rejection rate, full infrared rejection rate, TSER and SHGC. Other instruments can only measure three of these parameters, so there is a difference in price;

    SHGC is the total transmittance of solar energy, through which the SC shading coefficient can be calculated;

    LS182 uses a large color LCD screen, which can switch between graphic display and percentage data, making the reading more intuitive.

  2. 2. The difference between LS182 window film transmission meter and LS183 spectrum transmission meter

    LS182 can measure six parameters of visible light 380-760nm, ultraviolet 365nm, infrared 940nm, 1400nm, full infrared and SHGC.

    LS183 can measure visible light 380-760nm, ultraviolet 365nm, infrared 940nm.