LS-101A/LS-101C Pavement Marking Retroreflectometer
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The LS-101A/LS-101C Pavement Marking Retroreflectometer is a precision handheld photoelectric instrument engineered for accurate on-site measurement of retroreflection coefficient (R’) in accordance with ASTM E1710/E1710M standards. This instrument is specifically designed for quality verification of retroreflective materials used in traffic control devices, including pavement markings, vertical signs, and vehicle conspicuity treatments.
Engineered for deployment by material manufacturers, quality assurance departments, construction oversight units, and transportation agencies, this device meets rigorous testing requirements for highway, railway, and aviation infrastructure compliance. The instrument’s capability extends to evaluating reflective performance on commercial vehicle markings and other retroreflective safety applications.
The system architecture comprises an optical assembly, detection and signal amplification circuitry, power management and control systems, digital display interface, and certified calibration artifacts. Each unit includes NIST-traceable calibration blocks to ensure measurement traceability and compliance with international standards.
The instrument employs a high-resolution LCD digital display for real-time measurement readout and is powered by rechargeable lithium-ion batteries, providing extended field operation with consistent measurement accuracy. The design incorporates precision angular adjustment mechanisms for observation angle (α) and entrance angle (β) configurations as specified in ASTM E1710/E1710M.
Technical Specifications:
| Parameter | LS-101C | LS-101A |
|---|---|---|
| Measurement Configuration | Single-angle | Multi-angle |
| Observation Angle (α) | 0.2° ±0.002° | 0° to 2.0° ±0.002° |
| Entrance Angle (β) | -4° ±0.1° | -45° to +45° ±0.1° |
| Illumination Source | Standard A光源, 2856K color temperature | |
| Photodetector | Silicon photodiode with CIE V(λ) spectral response | |
| Display Interface | LCD digital display | |
| Measurement Range (R’) | 0 to 3,000 cd·lx⁻¹·m⁻² | |
| Measurement Resolution | 0.1 cd·lx⁻¹·m⁻² | |
Operational Protocol (LS-101A Configuration):
- Angular Parameter Configuration
- The optical detection module incorporates precision adjustment mechanisms for observation angle (α) and entrance angle (β) parameters.
- Observation Angle (α) Configuration: The observation angle parameter is established through…