The Dusthunter T50 is an economic dust concentration measuring system. It can measure dust at medium to high concentrations in gases above the dew point. Basic measuring value is transmittance. Opacity and extinction can be calculated and displayed along with the dust concentration after gravimetric calibration. The system finds applications in emission monitoring of heating installations, monitoring of dust upstream of filtering facilities and at cement storage and packaging units. Dusthunter T50 can automatically check of zero adjustment and set it as reference point.