... .Resolution is 128*64 LCD screen Ozone gas detector for Electronics/petroleum/petrochemical/chemical NT 8313 Portable Ozone(O3)Gas DetectorNT ... -8313 Series Portable O3 Gas Detector is widely used in Electronics ,petroleum ,petrochemical,chemical ,metallurgy \electric power and other industrial and ... : 30 hours aboveSensor life: 1 year Ozone gas detector for Electronics/petroleum/petrochemical/chemical