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Featured Product


AWOS AV Weather Observation Systems



OSI is a member of HMEI the HydroMeteorological Equipment Industry Association
OFS 2000 header
There are OFS models for nearly every CEMS, or process control application in power plants, refineries, chemical plants, incinerators, air/gas handling systems. Our patented scintillometry measurement technique offers all our systems the same basic advantages:
    • Non-intrusive (no direct contact with flow)
    • No moving parts
    • No calibration required
    • Full-path averaging
    • Unaffected by distance, pressure, moisture or opacity
    • No flow media high temperature limits
    • Continuous self-test & diagnostics
For further information: contact your local representative/reseller; contact us by phone; or simply send us an email by clicking here
OFS 2000R OFS-2000R  For industrial steam lines
Extended range with AGC to optimize the response based on the steam level. Measurement is not dependent on differential pressure, design DP, beta ratio, temperature, gas composition, humidity or the speed of sound.
OFS-2000W  Our most versatile flow sensor model
Equipped with AGC control to handle transient variation in flow opacity. Widely used for Continuous Emission Monitoring Systems (CEMS) Capable of handling the challenges of more demanding applications.
OFS-2000F  Expanded scale and rapid response
Specially developed as a flare gas monitor where expanded velocity scale, wider flow media temperature range, and quicker response time are required. Meets EPA 40 C.F.R. Part 60 Subpart Ja
OFS-2000  The World's Best Optical Flow Sensor
Our basic stack air flow velocity sensor for use in just about every CEMS industrial application. Robust, accurate, reliable, low-maintenance, and still going strong after more than twenty years.
LOA-105  Long-baseline Optical Anemometer.
Before OFS, there was LOA - with a 3Km range - developed for industrial use to handle large interior areas. Used world-wide to monitor aluminum smelting pot rooms. It's superior accuracy and resistance to harsh environments make it the sensor of choice for large-scale applications.

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