Large Aperture Scintillometers

OSI's LOA-005 model covers path lengths from 100 meters to over 10 km, making it suitable for long-baseline atmospheric monitoring. The LOA-105, designed specifically for aluminum smelter environments, covers ranges up to 3 km for indoor industrial applications. Both provide spatially averaged measurements across the entire optical path.

No. Both the LOA-005 and LOA-105 use an all-digital DSP-based design that eliminates the need for field calibration. Automatic Gain Control (AGC) circuitry compensates for LED power variation, contaminated optics, and dusty or hazy air conditions, ensuring measurement accuracy is maintained continuously without manual intervention.

OSI's Large Aperture Scintillometers are used in industrial fenceline monitoring at refineries, wake vortex and crosswind detection at airports, atmospheric turbulence assessment for aviation safety, environmental compliance at aluminum smelters, hazardous emissions tracking, wind energy forecasting, and climate and atmospheric research by government agencies and universities.

Yes. The LOA-005 is approved by NOAA, ETL, and the EPA, and is CE and ISO 9001:2015 certified. The LOA-105 holds EPA Method 14 Equivalency Approval for measuring airflow in aluminum smelter roof vents. OSI's systems are also used in FAA-certified AWOS applications, demonstrating broad regulatory acceptance across environmental and aviation sectors.

OSI's scintillometers are engineered for minimal maintenance. Preventative maintenance is required only every 6 months and consists of cleaning optical windows and verifying alignment. Internal diagnostics operate 24/7/365 to monitor system health automatically. AGC circuitry further reduces maintenance burden by compensating for optical contamination, meaning no regular optics cleaning is required between scheduled intervals.

Yes. The LOA-105 is specifically engineered for the harsh conditions of aluminum smelter pot rooms. All critical components are enclosed in air-purged housings with HF-resistant windows to withstand corrosive hydrogen fluoride gas. Sensor units can be positioned outside hazardous HF gas zones, ensuring personnel safety while maintaining accurate, continuous airflow and turbulence measurements.