YH40 Handheld Haze Meter Precision. Speed. Simplicity. The YH40 Handheld Haze Meter is a professional-grade instrument for measuring haze and total light transmittance in transparent and translucent materials. Designed for industries like glass processing, plastic production, film manufacturing, and display screen inspection, it offers fast and reliable testing that complies with ASTM D1003/1044, ISO 13468, and ISO 14782 standards. Its user-friendly design includes a 3.5” capacitive touchscreen, intuitive software, multiple apertures, and high-performance LED illumination. Whether in the lab or on the factory floor, the YH40 provides consistent, reproducible results. Key Features: Complies with ASTM and ISO Standards (D1003/1044, ISO 13468, etc.) Full-Spectrum LED Light Source (400–700 nm) Dual Orientation Testing – Supports both vertical and horizontal measurement setups Multi-Aperture Support – Ø20mm, Ø15mm, Ø8mm, Ø4mm 3.5” Capacitive Touchscreen – Easy, intuitive interface High Accuracy – Resolution: 0.01 units, Repeatability: ≤0.02 Large Storage – Up to 1000 standards and 20,000 sample records USB + Bluetooth Interface – PC connectivity with analysis/report software Long Battery Life – Built-in 5000mAh lithium battery Multi-language Support – English, Simplified & Traditional Chinese Technical Specifications: Parameter Specification Model YH40 Haze Meter Lighting Method Transmission: D/0 (parallel light illumination, diffuse reflection) Light Source 400–700 nm combined full-spectrum LED Sensor PD array detector, 2° CIE V(λ) response Aperture Sizes Ø20mm, Ø15mm, Ø8mm, Ø4mm Sphere Size Ø90mm Wavelength Interval / Bandwidth Not specified / 2° observer angle Measurement Range Transmittance: 0–100% Repeatability ≤0.02 (30 measurements) Resolution 0.01 units Display 3.5” TFT capacitive touch screen Measurement Time Approx. 1.5 seconds Sample Size Limit Thickness < 40mm Display Output Qualified / Unqualified results Interface USB, Bluetooth Power Supply Built-in 5000mAh lithium battery Data Storage 1000 standard samples, 20,000 sample records Operating Temp Range 0–40°C (32–104°F) Storage Temp Range -20–50°C (-4–122°F) Dimensions (L×W×H) 100×129×238 mm Weight Approx. 1.3 kg Languages Supported English, Simplified Chinese, Traditional Chinese Software Support PC-based software for report generation and data management Standard Accessories Adapter, software (via website), data cable, calibration fixture, haze film Downloads Data Sheet Link
