How to use Transmittance meter to measure Photovoltaic Glass light transmitance?

What is photovoltaic glass?

Photovoltaic glass refers to a solar energy utilization material that coats a layer of photovoltaic film on the surface of glass to convert light energy into electrical energy. The light transmittance of photovoltaic glass is measured to evaluate its solar energy conversion efficiency.

What is the light transmittance of photovoltaic glass?

The light transmittance of photovoltaic glass refers to the proportion of light passing through the glass in the visible spectrum range. If the light transmittance of photovoltaic glass is higher, it can absorb more sunlight and convert it into electricity. Therefore, light transmittance is one of the important parameters to evaluate the performance of photovoltaic glass.

What is a Transmittance Meter?

A light transmittance meter is an instrument that measures the light transmitted through a material. The principle is to use the light emitted by the light source to pass through the material to be tested and then be detected by the photosensitive element. According to the absorption, reflection and transmission of light by the material to be tested, its light transmittance can be calculated.

How to measure it?

1. Prepare test equipment: light transmittance meter, light source, sample holder, etc.

2. Place the photovoltaic glass sample on the sample holder to keep a certain distance between it and the light source.

3. Start the test: turn on the power of the light transmittance meter, operate according to the instructions of the instrument, and adjust the test parameters (such as test wavelength, light intensity, etc.).

4. Measuring light transmittance: measure the intensity of light transmitted through the sample by the Detector of the light transmittance meter, and the intensity of light without the sample, and calculate the light transmittance of the sample.

5. Record test results: record the test results in a form or report, and indicate the test conditions and test time and other information.

NBCHAO reminds you: the light transmittance test of photovoltaic glass should be carried out under constant temperature and humidity conditions to ensure the accuracy and comparability of test results. In addition, in order to improve the reliability of the test, the same sample can be tested many times, and the average value is taken as the final result.