Description
The TES-137 Luminance Meter is a precision instrument designed for accurate measurement of light intensity and brightness levels across a wide range. It features a dual 4-digit LCD display and auto-ranging capability over seven steps, covering luminance from 0.001 cd/m² to 1,999,000 cd/m² (or 0.001 fL to 580,000 fL). The meter utilizes silicon photodiodes for high sensitivity and excellent spectral response, closely matching the CIE photopic curve, ensuring reliable readings for color-critical applications. Key measurement functions include peak brightness, luminance ratios, distinct B-As, accumulation brightness, and variation percentages, as well as user calibration and color correction features.
Equipped with a microSD card (4GB) for data logging and a memory capacity of 200 sets, the TES-137 allows users to store, review, and export data efficiently via USB. Its photosensor has a 90 cm lead, providing flexible positioning during measurement. Powered by 6 AAA batteries, the meter offers up to 50 hours of continuous operation, and its compact, portable design (meter: 235 g; photosensor: 210 g) includes a carrying case and all necessary accessories. With fast measurement response, max/min/avg functions, backlit display, and comparison features, the TES-137 is ideal for LED testing, display calibration, lighting quality control, and other high-precision luminance applications.
