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Monitoring device / dust concentration and opacity - 400 - 700 nm | OPM 4001
The Rosemount Analytical OPM 4001 (EPA Yielding) model of opacity dust density monitors by Emerson utilizes tried-and-tested circuitry and optic which are simple yet highly precise. This top-operating opacity auditing mechanism (with a dual-pass transmissiometer) features high quality components, which have all been individually and collectively tested for the optimal usage output.