N2 Purity Analyser

About N2 Purity Analyser

A N2 (Nitrogen) Purity Analyzer is a specialized device used to measure the concentration or purity of nitrogen gas, typically to ensure that it meets the required specifications for various applications. It is crucial in many industries where nitrogen gas is used in large quantities and needs to have a high level of purity, such as in chemical, food processing, pharmaceutical, and medical applications.

• Measurement of Nitrogen Purity: It measures the percentage of nitrogen in a given sample, ensuring that it meets the required purity level.
• Detection of Impurities: Common impurities detected include oxygen, carbon dioxide, argon, and trace gases, which can affect the nitrogens quality and the effectiveness of processes using nitrogen.

1. Sample Introduction: A sample of nitrogen gas (often from a cylinder or pipeline) is introduced into the analyzer.
2. Gas Detection: The analyzer detects the concentration of impurities, commonly using methods like:
   • Oxygen Sensors (Paramagnetic or Electrochemical): These sensors detect oxygen levels, which are subtracted from the total to calculate the purity of nitrogen.
   • Infrared Sensors (for CO2 or other gases): These sensors measure carbon dioxide and other contaminants that can affect nitrogen purity.
   • Thermal Conductivity Detectors: Sometimes used in specific analyzers to distinguish nitrogen from other gases.
3. Display/Output: The analyzer then calculates the nitrogen purity based on the impurity levels and displays the result, typically as a percentage of nitrogen purity (e.g., 99.99% N2).

1. Electrochemical Oxygen Analyzers: These are one of the most common types of analyzers. They use electrochemical cells to detect the presence and concentration of oxygen, which allows them to determine nitrogen purity.
2. Paramagnetic Oxygen Analyzers: These analyzers work on the principle that oxygen is paramagnetic (attracted to a magnetic field) and measure this magnetic property to determine the oxygen concentration.
3. Gas Chromatography: High-end analyzers may use chromatography to separate and analyze the components of the nitrogen sample.
4. Infrared Sensors: These are used for detecting gases like CO2 or hydrocarbons and can be useful in analyzing the purity of nitrogen in more complex mixtures.