BTG-8S SPECTRAL TRANSMITTANCE SYSTEM

Spectral Transmittance Measurement for Solar and Coated Glass

An integrated optical, spectral and software measurement system for transmittance analysis, colour evaluation and repeatable quality control of solar and coated glass.

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FZT-2 automated zebra angle measurement system

Integrated Spectral Measurement System

Measurement Capabilities

Spectral, Photovoltaic and Colour Measurement in One System

Optical and Analytical Functions

Spectral TransmittanceNumerical results and full spectral curves across the configured wavelength range.

Photovoltaic TransmittanceAutomatic calculation of AM1.5 effective integral transmittance.

Visible-Light TransmittanceCalculates visible-light transmittance using D65 illumination distribution.

Colour MeasurementOutputs L*, a*, b* colour values and overall colour difference ΔE.

Automatic CalibrationBuilt-in automatic calibration with configurable intervals.

Continuous TestingDesigned to resist ambient-light interference during extended operation.

Selected Technical Specifications

Standard wavelength range380–1100 nm

Customisable wavelength range280–1200 nm

Measurement range0–100%

Transmittance accuracy≤ 0.05%

Repeatability≤ 0.05%

Measurement speedUp to 150 ms / point

Sample table2500 × 1500 mm

Measurement geometryIntegrating sphere illumination and collimated receiving

Confirm final specifications and supplied configuration during technical review.

Measurement Workflow and Results

From Glass Sample to Quantitative Spectral Results

Light passes through the glass sample, the transmitted signal is collected and the BTG-8S software calculates, displays and records quantitative spectral transmittance results.

01Position Glass Sample

02Collect Transmitted-Light Signal

03Analyse Spectral Data

04Record Quantitative Results

Live Measurement Display

Real-Time Spectral Transmittance

The software displays the live spectral curve together with calculated transmittance values, test parameters and system status.

BTG-8S multi-point measurement software display

Path Testing

Structured Multi-Point Evaluation

Path mode displays the programmed measurement points, spectral curves and quantitative results for each tested position.

BTG-8S historical measurement data and statistics

Recorded Results

Historical Data and Statistics

Stored measurements can be reviewed using result records, trend analysis and statistical distribution views.