Light Transmittance Meter Selection and FAQ

Both products can be used. We generally recommend using the LS110 light transmittance meter for traffic police teams, car inspection stations and other occasions based on product characteristics, because these places need to take pictures after archiving. For the measurent of the car front gear on site, it is more convenient to operate the instrument without a connection line. However, for some optical glass manufacturers or automotive glass manufacturers, LS116 light transmittance meter is more flexible.

1. With parallel light path design, the test material can measure up to 100mm thick.

2. High precision, conforming to the CIE photopic luminosity function and the precision is better than ± 1%, ensuring that it passes the test of the Chinese National Metrology Institute.

3. High resolution, the highest resolution can reach 0.001%.

4. The light transmittance can be measured up to 99.8%. For ordinary instruments, if the light transmittance is higher than 96%, the instrument will display 100% transmittance.

1. There is no problem in using the instrument for five or six years. When the instrument is turned on without putting test materials, as long as the instrument screen can display 100% light transmittance, it means that the instrument can be tested normally.

2. The National Metrology Institute recommends calibrating the instrument once a year, but as long as our light transmittance meter can still pass self-calibration, the test data is accurate.

1. LS116 is suitable for measuring the light transmittance of transparent uniform regular transmission materials. The diameter of the measured material should be greater than 10mm, the thickness should be less than 100mm.

2. LS117 is suitable for measuring the light transmittance of diffuse transmission materials such as opalescent, fog and matte mateirals as well as the optical density of low transmission materials. The diameter of the measured material must be greater than 2mm.

1. The LS117 adopts the principle of diffuse transmission, which measures the light transmittance and optical density at the same time. It can measure the light transmittance of semi-transparent materials such as opalescent, fog and matte mateirals as well as the optical density of low transmission materials. Most light transmittance meters on the market can only test the light transmittance of regular transmission materials. The transmittance of a diffuse transmission material must be measured with an instrument based on the principle of diffuse transmission for accurate data.

2. The test data of LS117 is the same as X-rite 341C, but the price is much more affordable.

The instrument can only test black film, but not yellow film.

LS117 measures the optical density (OD) of the material, not the thickness. However, the optical density value (OD) of a material is proportional to the thickness of the material. The larger the optical density value (OD), the thicker the material. If you want to check the thickness uniformity, you can also use the OD value to judge.

• The transmittance measured by LS117 will be slightly higher and the optical density will be slightly lower. It is explained in the international standards as follows:

• The ISO 5 series standard uses the opalescent glass method instead of the integrating sphere method. Although any diffusion method that meets the requirements can be used, for simplicity, the "opalescent glass" is usually used to mark its diffusion method to distinguish it from the integrating sphere diffusion method. Due to the influence of the mutual reflection between opalescent glass and the sample, the density value obtained is usually slightly lower than that obtained by the integrating sphere method. The actual effect depends on the reflection characteristics of the opalescent glass and the sample surface facing the diffuser.

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Yes. We can supply OEM and make customized design for any specific application.