The DCEM2100 provides a continuous measurement of opacity or dust concentration in flue gases by continuously measuring the transmissivity of visible light across a process duct or stack.

Its dual-pass optical arrangement is based on twin transmissometers measuring in opposing directions through the same section of the gas stream, providing not only an accurate average of the dust loading, but also providing a unique dynamic assessment of any misalignment errors due to stack movement.

The DCEM2100 has both TUV and MCERT certification which signifies the accuracy and reliability of its measuring capabilities.

Key features
  • % opacity or dust density in mg/Nm3
  • TUV & MCERT Approved
  • Dual-pass, open-path transmissometer
  • Integral auto zero and span check
  • Full contamination check on all active optical surfaces
  • Dynamic misalignment check
  • Integral high efficiency air curtains for maximum uninterrupted service
Typical Applications
  • Large Combustion Plants
  • Small Combustion Plants
  • Dust Collectors
SpecificationImagesCertificationDocumentationProduct Enquiry



Measuring units % opacity, mg/m3, mg/Nm3
Accuracy ±0.2% opacity
Ambient Temperature -20°C to +70°C
Power supply 48V DC supplied from Power Supply Unit (PSU)
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/RS485 MODBUS protocol (Optional)

Current documentation available

Lang Filetype Document Size
English DCEM2100 Datasheet 400kb
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