LS183 Spectrum Transmission Meter

Suitable for testing the transmittance of large thickness materials

UV, IR and visible light transmission rates can be measured simultaneous
Test slot is 47mm wide, which can test large thickness of materials
Large LCD display with three different display interfaces

Request A Quote User Manual

LS183 spectrum transmission meter employing the parallel light path source.  is mainly used for the optical performance test of thermal insulation coatings, single-layer glass, laminated glass (insulating glass), glass with film, PMMA, PC and other materials. It can simultaneously test the transmittance of ultraviolet, infrared and visible light. The width of the test slot is 47mm. The meter uses ultraviolet light source, infrared light source and visible light source to illuminate the tested transparent material. The sensor determines the transmittance by detecting the original light intensity emitted by the three light sources and the transmitted light intensity after the light has passed through the transparent material. The final result is expressed as a percentage.


Parameter Value
UV peak wavelength 365nm
IR peak wavelength 940nm
Visible light peak wavelength 380nm-760nm (conform to CIE photopic luminosity function)
Resolution 0.1%
Measurement accuracy ± 2%(colorless and uniform transparent materials)
Test sample thickness < 47mm
Dimension 216 mm * 134 mm * 29 mm (L*W*H)
Test slot dimension 47mm * 91 mm(W*H)
Weight about 590g
Power supply DC5V/1A
LS183 UV transmission meter appearance
LS183 UV transmission meter appearance


Measure UV, IR and visible light simultaneous

LS183 optical transmittance tester can measure ultraviolet, infrared and visible light simultaneous.
Having it is equal to having UV transmittance meter, IR transmittance meter and light transmittance meter at the same time

Easy to operate, Quick to measure

The UV transmission meter has simple operation and fast measurement. We just need to put the measured sample into the test slot and the three test results will be displayed on the interface immediately at the same time

Parallel optical path design ideal for measuring large thick materials

The instrument use parallel light path source which can test materials with large thickness

Three display interfaces switchable

The spectrum transmission meter has large LCD display, three different display interfaces can be switched

Real-time dynamic self-calibration

The instrument has real-time dynamic self-calibration function, which automatically calibrates to 100% transmittance after powering on

Before testing

Before testing

Under testing

Under testing

Provide free support pillar for relaxing reading

Supporting pillar in the packing makes it more convenient on the data reading

Qualifications and Standards


No. Description Quantity Unit
1 LS183 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
LS183 spectrum transmission meter package
LS183 spectrum transmission meter package

Light Transmission Meter Selection

More about Linshang transmission meter price, product model selection, parameter comparison and question

More details


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

  2. 2. The difference between LS183 and LS108H spectrum transmission meter

    Both LS183 and LS108H spectrum transmission meters can measure the transmittance of infrared, ultraviolet and visible light.

    1) LS183 use a card slot design with a detector hole diameter of 10mm and width between the light source and the receiver is 47mm. 

    2) LS108H use a desktop design, the detector hole diameter is only 1mm and the height between the light source and the receiver is 20mm. 

    LS108H is suitable for measuring small-sized materials and more widely used, so the price of LS183 is slightly higher. LS183 is suitable for measuring large-sized materials.