optical power meter Articles

  • Radiation Monitors and Meters

    Light Description and Applications The light meter is a portable unit designed to measure visible, UV, and near-UV light in the workplace. (The CTC has a UV light meter available through its loan program, ALEP.) The light meter is capable of reading any optical unit of energy or power level if the appropriate detector has been calibrated with the meter. The spectral range of the instrument is ...

  • An analysis of extinction coefficients of particles and water moisture in the stack after flue gas desulfurization at a coal-fired power plant

    Two important factors that affect in-stack opacity—light extinction by emitted particles and that by water moisture after a flue gas desulfurization (FGD) unit—are investigated. The mass light extinction coefficients for particles and water moisture, kp and kw, respectively, were determined using the Lambert-Beer law of opacity with a nonlinear least-squares regression method. The ...

  • Leaks and spills - LNAP and DNAPL detection and clean up

    Any tank can leak. Most leaks can be cleaned up and responsible operators need equipment that does what’s needed. With an ATEX Zone 0 certified interface meter site operators can successfully achieve LNAP and DNAPL detection when monitoring petrochemical sites, tank farms, petrol station forecourts, landfills or remediation sites. If site technicians detect ...


    By Geotech

  • Can the Solar Hourglass serve as a CSP landmark?

    A CSP project proposal has won first place in the 2014 Land Art Generator Initiative (LAGI) competition, but can the design make it beyond paper? By Heba Hashem October was an eventful month for Santiago Muros Cortés. The Argentina-based architect impressed the jury in Copenhagen with his plan for a Solar Hourglass that ...


    By FCBI Energy

  • Stellio heliostat set to cut CSP tower costs by 20%

    A new heliostat modeled on South African data is using a pentagonal reflector design, innovative construction techniques and smart software to boost the cost efficiency of tower plants. Heliostat fields typically contribute about 50% of the capital investment for CSP tower plants, according to a study by SBP Sonne, the German engineering firm which has ...


    By FCBI Energy

  • A Cleaner Energy Future

    As renewable energy plays an increasingly important role in the world’s energy portfolio, the standards of ASTM International Committee E44 are helping to pave the way for innovation in clean energy sources. A growing population and improving living standards around the world are causing significant increases in energy demand and competition for fossil fuels. These escalating energy ...


    By ASTM International

  • Leak detection in semiconductor fab gas processes

    Problem Statement Often times in semiconductor fabs moisture levels are monitored to ensure that products aren’t damaged by excess moisture in the process. If there are above normal levels of moisture, pinpointing the source of that moisture can be difficult. The moisture could be evolving from impurities in gas tanks or leaks in the sampling lines. One way to avoid downtime ...


    By CIC Photonics, Inc.

  • Detection of moisture in ammonia gas

    Problem Statement As technologies advance, so does the request for ultra high purity ammonia. Ultra high purity (UHP) ammonia is used in the semiconductor industries, production of flat panel displays, and a number of other applications. Due to this rising interest in UHP ammonia, manufacturers are having to battle ammonia’s most prominent and damaging impurity--moisture. For ...


    By CIC Photonics, Inc.

  • Real Time Control of the Sewage System in St Malo

    Saint-Malo is an extremely attractive and popular seaside resort on the north coast of Brittany in France. Covering 1,400 hectares, the local population of 50,000 increases to 120,000 in the tourist season. One of the distinguishing features of this part of the Channel coast is a very high tidal range – 14 meters from low to high, with a potential impact back through the sewer network. Combined ...


    By Innovyze

  • Advanced Water Quality Techniques Course

    Abstract:The development of a strategic water quality monitoring program is based on prioritizing risks to public safety and economic reality. The development of global standardized methods and protocols for automated water quality monitoring would facilitate international communication of water quality information and comparison of standardized methods and protocols. The three primary methods ...


  • New Products Archives

    Product: PURELAM® A-9000/A-9010 solventless laminating adhesive Manufacturer: Ashland Specialty ...


    By Actio Corporation

  • Interview with Thomas A. Schwartz - 2014 Chairman of the ASTM Board of Directors

    As president and senior principal at Simpson Gumpertz & Heger Inc., what challenges and opportunities do you see for your company as it prepares to close out its sixth decade of serving a broad client base? SGH has been very fortunate to have had a decades-long unbroken string of growth and expansion of services and client base. As we look to the future, we focus on maintaining the ...


    By ASTM International

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