Definition of critical for Students. 1 : likely or eager to find fault. 2 : consisting of or involving judgment of value, worth, beauty, or quality critical writings. 3 : using or involving careful judgment a critical examination of a patient.
This unit may be used on the counter or built-in with a separate trim kit... GE WB24X799 Microwave Gas Sensor. This listing is for a new GE WB24X799 Microwave Gas Sensor ........ This item was taken out of a new freight damaged microwave..............
A carbon dioxide sensor measures gaseous carbon dioxide levels by monitoring the amount of infrared (IR) radiation absorbed by carbon dioxide molecules. Measuring carbon dioxide is critical in monitoring many industrial processes and indoor air quality. Types of Carbon Dioxide Sensor. The following are two major types of carbon dioxide sensors: Nondispersive Infrared (NDIR) Carbon Dioxide Sensors. NDIR sensors are spectroscopic sensors that detect carbon dioxide in a gaseous environment by its characteristic absorption. It includes an infrared detector, an interference filter, a light tube and an infrared source. The gas is either pumped or diffused into the light tube, and the electronics measure the absorption of the wavelength of light.