The DEFOR is a specialist for extremely selective NO-measurements at small ranges. It is a generalist for many UV-active gases like SO2, NO2, Cl2, NH3, CS2, H2S and COS. The innovative signal processing as well as the highly stable detectors provide an outstandingly longterm stability and allow the compensation of drifts and other effects.

• Real reference measurement for stable measurements with low drift
• Simultaneous measurement of NO and NO2 without converter, also at low concentrations
• High life time of ultraviolet lamp
• Optional adjusting unit for adjustments without test gases
• Thermostatization, therefore insensitive to fluctuations of ambient temperature