Carbon monoxide detectors are devices designed to measure the concentration of CO in the air and trigger an alarm when it reaches a dangerous level. Most modern detectors use one of three technologies: electrochemical sensors, metal oxide semiconductor sensors, or biomimetic sensors.
Electrochemical Sensors: These sensors use a chemical reaction between CO and an electrolyte to generate an electric current, which is measured to determine the CO concentration. Metal Oxide Semiconductor Sensors: These sensors detect changes in electrical resistance caused by CO interacting with a heated tin dioxide surface. Biomimetic Sensors: These use a gel that changes color when it absorbs CO, triggering an electronic signal to sound the alarm.
