The EnergyTech 101 Opacity Monitors consist of a visible light transmitter and receiver arrangement with digital data processing in a local display unit.

The monitors can display data in either opacity, extinction or dust density in mg/m3 or normalised dust density in mg/Nm3. The EnergyTech 101 possesses four analogue inputs for normalisation data; temperature, oxygen, pressure and water vapour.

Key Features

  • Simple installation – high reliability – very low maintenance
  • Proven technology meets legislative requirements
  • Data in % opacity, mg/m3, mg/Nm3 dust
  • Lens contamination minimised by high-efficiency air purges
SpecificationImagesDocumentationProduct Enquiry



Measuring units opacity, mg/m³
Accuracy ±0.2% opacity
Ambient Temperature -20°C to +70°C
Power supply 76V to 265V AC @ 50/60Hz, 20VA
Construction Corrosion resistant epoxy coated aluminium housing sealed to IP66
Analogue outputs 2 x 4-20mA current outputs, isolated, 500Ω load max. fully configurable from keypad
Logic Outputs 2 x volt-free SPCO contacts, 50V,1A max., configurable as alarm contacts
1 x volt-free SPCO contact, 50V,1A max. for data valid
Serial Data RS232
Lang Filetype Document Size
English EnergyTech 101 400kb

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