P rodu C t i n for m at i o n DEFOR Extractive UV Gas Analyzer Individual or Simultaneous Measurement of SO2, NO, NO2, Cl2 as well as NH3, CS2, COS and H2S

DEFOR – Extractive measurement of gases by UV absorption DEFOR is an extractive UV gas analyzer that can simultaneously measure up to three measuring components. It is a specialist for extremely selective NO measurement with small measuring ranges and an allrounder for many other UV-active gases, e.g. SO2, NO2, Cl2, NH3, CS2, H2S and COS. Cross-sensitivities to CO2 and H2O do not exist because of the spectral range used. Innovative signal processing as well as highly stable detectors provide excellent long-term stability and compensation of drifts and influencing effects. DEFOR with stateof-the-art...

MEASURING PRINCIPLE The DEFOR process photometer op- erates according to the principle of absorption in the ultraviolet radiation range. NO-specific as well as other wideband radiation fractions are emit- ted from an electrode-less discharge lamp in the ultraviolet spectral range. The radiation spectrum, required for spective gas component, is generated in the filter wheel unit by one or two revolving filter wheels. For NO mea- surement, DEFOR uses the gas filter correlation where the radiation spec- trum for measurement and reference is separated by a cyclic swiveling in of an NO gas filter....

11 When calibrated daily and in temperature controlled environment ±2 °C (35.6 °F) SICK MAIHAK GmbH | Germany NimburgerStr.il | 79276 Reute | www.sick.com Sensor Intelligence.