AQL200 Ozone Detector Ozone Detector I. Characteristics of 200 Ozone Detector PPM, PPB concentration unit display, low, high, and leakage three range probes can be selected, with a minimum display resolution of 1 ppb, simple operation and reliable use, active pump suction sampling to reduce ozone loss, intelligent sensor design for easy repair and maintenance in the future, patented GSS technology, built-in sensor performance compensation, more accurate and reliable measurement values. Optional VOC, CO, ammonia probes available