What is an ozone sensor? An ozone sensor is used to measure ozone gas, detect and measure ozone gas, which is odorless and colorless with the names of ozone gas, o3 gas. The price of an ozone sensor depends on the type and manufacturer. Ozone, o3, ozone meter water ozone measurement, ozone meter | ozone sensor | sale of ozone sensor | types of ozone sensor | price of ozone sensor | purchase of ozone sensor