Optical Scientific

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Optical Scientific

Optical Scientific, Inc. was founded in 1985. We are a research, development, engineering and manufacturing firm located in the I-270 high technology corridor outside of Washington, DC. We design and build the most advanced optical instruments in the world for measuring precipitation, air flow, turbulence, and visibility. For over thirty years we have been engaged in a constant research and development program to ensure our position as world leader.

Our sensors and systems serve airports, highways, railroads, sea-borne vessels, smelters, power plants, refineries, and hundreds of other commercial and industrial sites around the world. Our dedicated staff of scientists, engineers, and technicians are constantly looking for new challenges. We take pride in our work, and in delivering superior instruments to our customers.

Country: United States
Asia Climate Forum stand number: V16

Featured products

APG All Precipitation Gauge APG-815

APG All Precipitation Gauge APG-815
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OSI’s APG-815-DS uses proven optical scintillation technology and offers many performance and maintenance advantages over traditional tipping bucket and weighing type rain gauges.

  • Additional Capability
    Reports Present Weather Codes
  • Superior Technology
    APG® uses Optical Scintillation which is superior to other methods
  • Long-term reliability
    Operates unattended 24 hours/day, 7 days/week
  • Adaptive Heater Technology (AHT)
    Ideal for solar operation
  • Data access
    Low cost cellular modem option
  • Self-diagnostics & Testing
    Continuously monitors performance and informs user of trouble
  • Low maintenance

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ORGŪ Optical Rain Gauge

ORGŪ Optical Rain Gauge
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OSi’s ORG® (Optical Rain Gauge) is a superior tool for rain measurement. The ORG® is the only instrument available to measure true rain rate. This means you avoid the reading errors due to mechanical limitations, which plague other low-tech gauges.

No other rain sensor comes close to the ORG® in performance and features. Our scintillation technology has undisputed advantages over the competition.

From Antarctica to Saudi Arabia and from Switzerland to Australia, users worldwide rely upon OSi sensors. Our instruments can be found working for airports, transportation authorities (such as state DOT’s), businesses, municipalities, universities, research institutions, military, and other government agencies. Our customers include the NWS, FAA, MIT, NASA, USAF, and USGS. If your weather measurement needs involve hydrological profiling, research, or synoptic observation, OSi’s sensors will do the job.

OSi’s scintillation technology is the best method for optical measurement of rain. Falling rain causes beam intensity variations in the infrared light as it passes through the beam. These irregularities, known as scintillation, have characteristic patterns, which are detected by the sensor and converted to rain rate. 

ORG®has a very tough, lightweight frame, which can withstand the rigors of the weather. Lens heaters keep the optical path clear of dew or condensation. The enclosure is rated NEMA-4 (IP 66). The instrument is easily installed using our U-bolt configuration to a vertical pole or horizontal bar. (No special mounting pole required.) ORG®reports rain rate in mm/hr. The output format is a common ASCII delimited data string, which is easily handled by a PC or Data Collection System.

OSi’s sensors have more than 200 million hours of proven field operation in all climates. MTBF (Mean Time Between Failure) for OSi instruments is in excess of 45,000 hours. The ORG®operates unattended 24 hours a day, 7 days a week. The instrument uses proprietary algorithms that eliminate the need for frequent analog calibration. Field calibration is no longer required. The sensor uses an Automatic Gain Control to compensate for signal loss caused by dirty lenses. The sensor also employs a comprehensive self-test that updates once per minute and reports any potential problems in the output message.

No other precipitation sensors provide this powerful combination of high technology and proven reliability! 

AWOS-AV weather observing station

AWOS-AV weather observing station
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The OSI AWOS AV™ system is a fully automated aviation weather observing and reporting system designed to support airborne and ground users. This FAA-certfied AWOS is equipped with dual-pressure sensors and visibility sensors for determining official altimeter settings, visibility, and reporting via FCC-licensed UHF data radio, Internet, land line or cell phones.

A basic OSI AWOS AV™ system consists of FAA-approved barometric pressure sensors and FAA-approved visibility sensors. It can be enhanced with:

  • Wind speed/direction sensor
  • Temperature sensor
  • Humidity sensor
  • Ceilometer

A full OSI AWOS AV™ system calculates the altimeter setting, density altitude, condensation altitude, dew point - and can report the prevailing and gust wind components for pre-programmed runway headings. With OSI AV software and a Digital Data Receiver (DDR), tower weather telemetry and any NOTAMs are communicated by broadcast audio on a pilot-activated VHF frequency or an Endless Loop Dedicated Frequency (ELDF) on a specified VHF frequency; or by viewing the operator's terminal display in the FBO location, Internet and dialup voice modem options allow remote user access from anywhere on earth.

APG All Precipitation Gauge APG-815

APG All Precipitation Gauge APG-815

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ORGŪ Optical Rain Gauge

ORGŪ Optical Rain Gauge

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AWOS-AV weather observing station

AWOS-AV weather observing station

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