A stationary gas analyzer of nitric and sulfur oxides

The дOΓ-04 automatic gas analyzer ensures continuous measurements of NO and SO2 concentrations in flue gases of fuelburning installations. The instrument measures the value of the differential absorption in the UV frequency range. The measurement limits are 0–500 mg/m3 for both components. The duration of one measurement cycle is ≤ 10 s. The information on the measured concentration is shown on the display and is supplied, in the form of standard current signals with amplitudes of 0–5 mA, to external self-recorders and, in digital form, to the COM port of a computer. Periodical automatic calibration of the gas analyzer can be performed in the course of measurements.