Gas analyzer: what it is, types, application

A gas analyzer is a device designed to measure the concentration of certain gases in air or other media. It is necessary for the safety and efficiency of processes in industrial enterprises. The gas analyzer is used in various industries to control the level of harmful or hazardous gases.

Design of gas analyzers

A gas analyzer consists of sensors that react to different types of gases. They can be of different types: electrochemical, infrared, catalytic or semiconductor. The electronics process the data obtained.

How a gas analyzer works:

• When a gas hits the sensor, a chemical or physical reaction occurs that changes the electrical properties of the sensor.
• These changes are measured and interpreted by the electronics to determine the concentration of the gas.
• The results are typically displayed or transmitted via an interface for analysis or monitoring.

Gas analyzers vary in size and appearance depending on their purpose and manufacturer. They are compact instruments in the form of a box or panel with a display to show the measurement results. The size can vary from a few tens of centimeters to a meter in length.

Types of gas analyzers

The difference between gas analyzers is in what measurement methods they use. There are combined models. The main types of gas analyzers:

• Electrochemical analyzers with sensors to measure the concentration of oxygen, carbon dioxide, hydrogen sulfide, etc.
• Infrared analyzers measure the concentration of gases by analyzing changes in infrared radiation caused by interaction with certain gases.
• Catalytic analyzers measure the concentration of gases, such as flammable gases or vapors, by using catalysts.
• Semiconductor analyzers are based on the use of semiconductor materials. They detect changes in conductivity caused by the presence of certain gases.
• Gas mass spectrometers are more sophisticated instruments to more accurately analyze the composition of a gas mixture by ionizing them and analyzing ion masses.

Gas analyzers are mounted on production equipment or pipelines. They are placed on the walls of the premises or on special racks. This is how air quality is monitored in buildings or outdoors.

Application of gas analyzers

Gas analyzers are used in fire protection systems for homes and enterprises. They are necessarily there in hazardous production. Gas analyzers are necessary for such tasks:

• Monitoring the level of harmful or explosive gases in production facilities such as chemical plants, oil refineries and steel mills.
• Monitoring air and water pollution for environmental improvement.
• Diagnosing gas concentrations in medical gas mixtures, including in anesthesiology and intensive care.
• Indoor safety, gas leak detection and air quality monitoring in confined spaces such as buildings and tunnels.
• Scientific studies of chemical reaction processes, analyzing the composition of gas mixtures and monitoring environmental changes.

With a variety of sensor types and technologies, accurate measurements are obtained. This helps to create technologies and solutions for safety, security and environmental protection. In factories, process efficiency is improved by monitoring the balance of gases.