The optical technology of the LOA has multiple advantages:

• Complete Path-Averaged Measurement – The LOA takes the average velocity rate over the entire optical path. This results in a more representative measurement of the flow – much better than point- source sensors.
• Predictable Performance Designed for long-term use in a pot room, all critical components of the LOA are enclosed in air-purged housings and HF resistant windows are used to transmit the IR light into the pot room environment.
• Low Maintenance As simple as periodic cleaning and checking alignment.

The LOA-105 has received the seal of approval from the US government with EPA Method 14 Equivalency Approval (the rule for measuring airflow velocity in aluminum roof vents. LOA-105 has captured nearly 70% of the US market. Major players in the industry such as ALCOA, Reynolds and Kaiser use LOA as well as ALCAN in Canada, Comalco in Australia, and ALCOA Europe.

LOA design, based on decades of experience in harsh environments, results in a rugged, extremely reliable sensor, immune from typical error modes. LOA uses AGC circuitry to eliminate the effects of output power drop, contaminated optics, or dusty air. Internal diagnostics alert the user if signal strength gets too low for normal operation. Preventative maintenance, suggested every 6 months, is as simple as cleaning the windows and verifying optical aim. With DSP based design, no field calibration is ever needed.

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The post OPTICAL SCIENTIFIC INC (OSI) LOA-105 Long-Baseline Optical Anemometer/Turbulence Sensors for Aluminum Smelters appeared first on Thomson Environmental Systems.

The OFS uses EPA Method 14 approved optical scintillation technology. The optical scintillation technique relies on advanced Digital Signal Processing (DSP) electronics to “see” and measure the movement of turbulence found in a gaseous flow stream to provide highly accurate, path-averaged air velocity measurements. The accuracy of the OFS has been proven both in NIST’s wind tunnel and in numerous real-world installations.

Advantages

• System not sensitive to dirty optics / high opacity media
• System is non-intrusive to media flow –
• No flow media means high temperature limits.
• Measurement is true cross-stack line average
• Fully meets all EPA 40CFR Parts 60 & 75
• Unaffected by temperature, pressure, humidity, density, path length
• Easy installation and optical alignment – once interconnect cable is run and ports are prepared, system can be connected, aligned and operating in less than 30 minutes
• DSP-based signal processing means no analog “drift”.
• Includes built-in continuous self-test routines to warn of potential problems before the point of failure.
• Cross stack/duct/pipe line measurement for more accurate flow readings.
• Measurement path 90º to stack; second plat-form not required – save $100K or more
• Easily replaces existing ultrasonic sensors.
• Minimal upstream/downstream diameters; typically 2 & 1, not 20 & 10 like others.
• Long-term reliability: no blowers or moving parts; operates unattended – 24/ 7/365.
• Ultra-low maintenance design.
• Rugged; designed for harsh environments.
• Built in continuous self-test diagnostics.
• Measurement unaffected by path length & media pressure, moisture & opacity.
• Wide versatility, NIST tested and unbeatable combination of advanced technology, high performance and proven reliability!

OFS-2000 Options

• Order Z-Purge Option for Class I Div I/II applications.
• Standard Control Unit is rack mount; for wall mount, order 1910-301, NEMA4 Option.
• For custom receiver cable length, order 1910-216-nnn where “nnn” is cable length in feet (max 300).

OFS-2000 Accessories

• 1910-431-nn Sight Glass with gaskets for media isolation (2 required, multiple models)
• For custom receiver cable length, order 1910-216-nnn where “nnn” is cable length in feet (max 300).
• Standard Control Unit is rack mount; for wall mount, order 1910-301, NEMA4 Option.

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The post OPTICAL SCIENTIFIC INC (OSI) – OFS WSS-300 Tunnel Wind Speed and Smoke Sensor appeared first on Thomson Environmental Systems.

The OWI-430 DSP-WIVIS is a fully automated weather and visibility sensor that provides accurate visibility, present weather and precipitation measurement in a single sensor.

This 3rd generation intelligent sensor uses all digital signal processing (DSP) for no-drift high-accuracy results. OSi’s patented environmentally adaptive algorithms use artificial-intelligence technology derived from over 200 million field hours of real-world data from our sensors installed around the world. 

The DSP-WIVIS measures visibility and detects and quantifies rain, snow, drizzle, freezing and mixed precipitation conditions. The -DSH model identifies whether visibility impairments are caused by haze/fog vs. dust/smoke. The sensor is designed for year-round continuous operation in all climates from Antarctica to tropical rain forests. OSI’s advanced weather sensors provide critical weather information to airport, highway, military, research and meteorological weather information systems all over the world with over 3000 systems fielded.

Thanks to the new DSP electronics, the need for field calibration is eliminated. The single enclosure makes integration and installation simple. Adding the optional HIP-100 acoustic sensor provides for enhanced hail and ice pellet discrimination. The DSP-WIVIS is widely used by airports and regional DOT’s across the US and throughout the world.

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The post OPTICAL SCIENTIFIC INC (OSI) OWI-430-DS DSP-WIVIS Weather Identifier and Visibility Sensors appeared first on Thomson Environmental Systems.