INFICON D-Tek 3 CO2 Leak DetectorINFICON D Tek 3 CO2 Leak Detector 721204G1 This INFICON 721204G1, D Tek 3 CO2 Leak Detector uses an innovative infrared absorption sensing cell which is extremely selective to carbon dioxide, yet its circuitry allows the instrument to equalize to the CO2 present in the atmosphere, so there is minimal risk of false alarms. The D TEK 3 CO2 maintains its sensitivity over time for consistent, accurate and reliable performance. Its specialized infrared