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.
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.
Operating Principle
Light Source
Span
Averaging
Accuracy
Drift
Resolution
Optical Path Length
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