ET 101 - CEMS

Opacity Monitor


Used for non-compliance applications, the ET101/102 is a simple, reliable, cost effective way to measure opacity or dust in a stack or duct.

  • DESCRIPTION

    The ET101/102 Opacity Monitor is a single-pass transmissometer consisting of visible light transmitter and receiver arrangement with digital data processing in a local display unit. The monitors can display data in opacity, extinction or dust density in mg/m3 or normalized dust density in mg/Nm3.

    Using analog inputs from a process, the ET102 offers normalization of the opacity data from temperature, oxygen, pressure and water vapor.

  • FEATURES

    • Simple instillation for low initial cost
    • Proven technology offers low maintenance and high reliability
    • High-efficiency air purges minimize lens contamination
    • Data in percentage opacity, mg/m3, mg/Nm3 dust for optimum flexibility

  • PARAMETERS

    Operating Principle

    • Single pass transmissometer

    Light Source 

    • Modulated high-intensity LED at 637 nm wavelength

    Span

    • Fully selectable in % opacity, extinction, mg/m3 & mg/Nm3

    Averaging 

    • 4 rolling averages selectable from 10 secs to 30 days

    Accuracy

    • ±0.2% opacity

    Drift 

    • <1% opacity per month

    Resolution

    • 0.1% opacity

    Optical Path Length 

    • 1.6 feet - 49 feet

  • DATASHEET

    Brochure and Manual availibe on the Downloads page here.