AELAB WTM-1100D Optical Density Meter for Film, Glass & Diffuse Transmission Materials

The AELAB WTM-1100D Optical Density Meter is designed for precise measurement of optical density and light transmittance in films, patterned glass, mist glass, ceiling lamp covers, coated materials, and diffuse transmission samples. It features a diffuse transmission light path, dual measurement modes, and a fixed support structure that enhances measurement repeatability.

The instrument supports absolute and relative optical density measurement, dot area rate analysis, and light transmittance quantification. It is widely used in production inspection, quality control, and material testing, including specialized applications such as X-ray film density evaluation and aluminum film assessment.

⚙️ Design & Construction

The AELAB WTM-1100D integrates a stable diffuse transmission optical system with a fixed base and sensor support to minimize vibration and improve accuracy. The system uses an LED(D65) light source to ensure spectral stability during density and transmittance measurement. The compact main unit (126 × 65 × 27 mm) and cylindrical sensor (125 × Φ38 mm) allow precise positioning on film and glass samples. The 5 mm optical hole supports fine-spot analysis for small-area measurements.

🔬 Working Principle / Testing Method

The WTM-1100D quantifies light passing through a material and converts the result into optical density (OD), relative density, and transmittance values. The LED(D65) source emits controlled illumination, which diffuses through the sample. The sensor captures transmitted light intensity, and the microprocessor calculates OD using logarithmic conversion. The instrument also computes dot area rate for halftone film by comparing transmitted values between printed and non-printed regions. All measurements follow fixed-path alignment for high repeatability.

💡 Key Advantages

• Diffuse transmission optical path optimized for fog, patterned, and frosted materials
• High-range optical density measurement up to 6.00 OD for X-ray and aluminum film analysis
• 0.010D density resolution for fine-detail film quality evaluation
• Dual-mode measurement with fixed support for stable industrial and laboratory workflows
• LED(D65) illuminant ensures consistent spectral output across long-term use
• Lightweight sensor design for accurate point measurements
• Optional Bluetooth printing and wireless data output for GLP documentation

🔗 Connectivity & Integration

The AELAB WTM-1100D provides RS-232 data output for PC integration, data recording, and laboratory information management systems. Optional Bluetooth and Bluetooth printer modules support wireless reporting, on-site recording, and GLP/QA traceability.

🧠 Model Insight

🧪 Testing Applications

The WTM-1100D is suitable for film density analysis, fog and diffuse transmission material testing, mist and patterned glass evaluation, coated materials, ceiling lamp covers, X-ray film densitometry, aluminum film density measurement, and dot area rate analysis for printing and imaging industries.

Compliance & Quality Assurance

The instrument follows AELAB quality control protocols and supports GLP-compliant documentation through RS-232 and optional Bluetooth data export. Consistent performance is maintained through stable LED(D65) illumination and precision optical alignment.