A CO₂ test device is an analytical instrument specifically designed for real-time, accurate measurement of carbon dioxide concentration, purity, and flow rate in gases. It plays a crucial role in ensuring the stability of industrial processes and product quality, and is also an ideal tool for research laboratories and field applications.
(Non-Dispersive Infrared, NDIR): This is one of the most commonly used methods for CO₂ detection. The principle is based on the unique absorption characteristics of CO₂ molecules to specific wavelengths of infrared light. When a gas containing CO₂ passes through the sensor, it absorbs a portion of the infrared light; the device then calculates the CO₂ concentration by measuring the amount of absorbed light.
This method uses electrochemical or solid-state sensors that selectively respond to CO₂. When CO₂ molecules react with the sensor material, a measurable change in electrical signal is produced, which reflects the CO₂ concentration.
This is a more precise and comprehensive analytical method, particularly suitable for situations requiring the separation and analysis of multiple gas components. The chromatograph separates the gas sample into different components, and then uses a detector to measure the concentration of each component, thus providing highly accurate data on the purity and concentration of CO₂.
