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photometer Applications

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    Tunnel solutions for the light sensors

    According to the International Committee on Illumination CIE recommendations, luminance should be monitored as the luminance contained within in a conical field of view, subtending an angle of 20º. It is recommended that a luminance photometer is mounted in the tunnel approach road approximately 120 - 200 metres from the portal, depending on the approach speed of the vehicles and their stopping distance. The purpose of monitoring the luminance at the portal is to adjust the level of light intensity inside...

    By Codel International Ltd based in Bakewell, UNITED KINGDOM.

  • Automotive Emissions

    The Industrialisation of the XIX Century has seen drastic increase of all means of transportation. The invention of the automobile brought relief in the life of people, but nowadays, those cars, lorries and buses are responsible for many airborne pollutions and impact not only in megapoles but also in rural areas. The need of cleaner cars has brought new tigher regulations and the need for careful monitoring of automotive emissions. Our photoacoustic photometer are participating in that effort to curbe the...

    By Aerovia based in Reims Cedex 2, FRANCE.

  • ASTM Color (0-7) #3070

    ASTM color is an important product quality measurement for many refinery and petrochemical processes. The purpose of this application note is to determine ASTM (D1500) color with the ClearView db fiber optic photometer for real-time ASTM color measurement from 0-7. Quantify yellowness for product quality measurement for many refinery and petrochemical processes. Get results in real-time (seconds). Use for ASTM and other parameters in complex streams. Detect potential cross-over contamination in fill or supply...

    By Guided Wave, Inc. based in Rancho Cordova, CALIFORNIA (USA).

  • Hydroxyl Number in Polyols (OH#) #3013

    The use of polymeric polyols is commonplace in the manufacturing of polyurethanes and other specialty polymers. The hydroxyl number (OH#) is a measure of the concentration of the hydroxyl groups on the polyol. This is an important parameter to monitor and control during polyol production. The laboratory method that is commonplace for hydroxyl number determination is both time consuming and involves the use of hazardous materials. This note will discuss the use of Guided Wave hardware and software tools for the...

    By Guided Wave, Inc. based in Rancho Cordova, CALIFORNIA (USA).

  • APHA Color #3020

    Measurement of APHA color either on-line or in a laboratory setting using a photometer. Background: APHA is sometimes referred to as the Platinum Cobalt (Pt/Co) or Hazen scale. Also referred to as a “yellowness index”, the APHA color scale is a common method of comparison of the intensity of yellow-tinted samples to assess the quality of liquids that are clear to yellowish in color. Originally developed to determine the purity of municipal water supplies, it is now used as a metric for purity in the water,...

    By Guided Wave, Inc. based in Rancho Cordova, CALIFORNIA (USA).

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