Industrial Emissions Sensors

Optical Scientific offers four primary sensor types based on application: the OFS-2000 for general stack and industrial applications, the OFS-2000F for flare stacks with extended low-flow detection, the OFS-2000W for wet scrubbers and bag houses featuring Automatic Gain Control (AGC) for high-opacity conditions, and the LOA-105 Long-Baseline Optical Anemometer for aluminum smelter roof vents. All are built on the same patented optical scintillation technology and are non-intrusive, maintenance-free, and factory pre-calibrated.

Optical scintillation technology measures the fluctuation of an infrared light beam transmitted across a stack or duct. Turbulence in the gas flow creates characteristic scintillation patterns that a patented DSP-based algorithm converts into accurate velocity readings. This approach requires no physical contact with the gas stream, has no moving parts, and is unaffected by changes in temperature, pressure, opacity, or gas composition.

No. All OSI optical flow sensors are factory pre-calibrated and include a built-in automatic calibration check. Because the optical scintillation measurement principle is drift-free, no field calibration is ever required. This eliminates recurring calibration costs and downtime, making OSI sensors among the most cost-effective long-term solutions for continuous emissions monitoring.

The OFS-2000, OFS-2000F, and OFS-2000W models are all designed for EPA 40 CFR Part 75 compliance for stack gas flow monitoring at power plants and other regulated facilities. The LOA-105 carries EPA Method 14 Equivalency Approval for aluminum smelter roof vent airflow measurement. All models use NIST-certified algorithms.

Yes. The OFS-2000W is specifically engineered for wet scrubbers, bag houses, and high-opacity applications. It incorporates Automatic Gain Control (AGC) to compensate for signal variations caused by particulate matter, moisture, and entrained liquid droplets. All OFS sensors are inherently unaffected by opacity, temperature, pressure, and gas density changes.

OSI industrial emissions sensors are designed for ultra-low maintenance operation. With no moving parts and a non-intrusive measurement design, the sensors have a Mean Time Between Failures (MTBF) exceeding 80,000 hours and require no scheduled cleaning. They are factory pre-calibrated with a built-in automatic calibration check, meaning no on-site calibration or service visits are needed — significantly reducing total cost of ownership for continuous emissions monitoring applications.

OSI industrial emissions sensors are designed for a wide range of heavy industries, including power generation (coal, gas, and waste-to-energy plants requiring EPA 40 CFR Part 75 compliance), oil refining and petrochemicals (flare stack flow measurement, SRU monitoring, and catalytic cracker emissions sensing), aluminum smelting (EPA Method 14-compliant airflow monitoring in pot room roof vents with HF-resistant housings), and waste management and incineration (emissions monitoring for incinerators, thermal oxidizers, and carbon capture systems).