Test principle of LS108A is to illuminate the tested transparent substance with 850nm
infrared light source, 940nm infrared light source and 550nm visible light source. Then,
the sensors respectively detect incident light intensity of three light sources and
transmission light intensity at which they transmit the tested substance. The ratio between
incident light intensity and transmission light intensity is the light transmittance, expressed
as a percentage.
I: LS108A parameter
1. Instrument size: length 200mm × width 180mm × height 106mm
2. Test hole diameter: ¢1mm
3. Gross weight: about 1.5Kg
4. Resolution: 0.1%
5. Measuring accuracy: ±2%
6. Infrared ray: peak wavelength of 850nm and peak wavelength of 940nm
7. Visible light: peak wavelength of 550nm
8. Power supply: 5V AC/DC power adapter
II: Operations
1. Power-on self-test
Plug into the power supply and turn the power switch to the ON position. The LS108A
will firstly test and calibrate itself. After completion of self-calibration, values displayed on
three displays are all "100", which means 100% transmittance in case of no tested
Power-on self-test
substance. During
LS108A lens transmission meter
Instruction manual
Shenzhen Linshang Technology Co.,Ltd.
V6.1
process, if not all of the displayed values are
3-19-2018 Page 1 of 3
Need help?
Do you have a question about the LS108A and is the answer not in the manual?
Questions and answers