Different Gas Sensors types are widely used in various industries, including healthcare, automotive, and aerospace, to monitor and control the levels of toxic or combustible gases. Gas sensors are devices that are used to detect and measure the concentration of gases in the air.

1. GAS SENSORS TYPES - DETECTION OF
DIFFERENT TYPES OF GASES
Different Gas Sensors types are widely used in various industries, including healthcare, automotive,
and aerospace, to monitor and control the levels of toxic or combustible gases. Gas sensors are
devices that are used to detect and measure the concentration of gases in the air.
Gas sensor types are widely used in industrial automation to detect and monitor the presence of
gases in various industrial environments. They are critical components in ensuring the safety of
workers, preventing environmental pollution, and controlling manufacturing processes.
Gas Sensors Types for Gas Detection

2. Electrochemical Gas Sensors
Electrochemical gas sensors are the most used type of gas flow sensor. They operate on the
principle of electrochemistry, where a chemical reaction occurs between the target gas and a
sensing electrode. The reaction generates an electrical signal, which is proportional to the
concentration of the gas being detected.
Electrochemical gas sensors are highly sensitive and can detect even very low levels of gas
concentration. They are commonly used for detecting toxic gases such as carbon monoxide and
hydrogen sulphide.
Infrared Gas Sensors
Infrared gas sensors detect gases by measuring the absorption of infrared radiation by the gas
molecules. The sensor emits infrared radiation, which passes through the gas and is absorbed by the
gas molecules. The amount of radiation absorbed is proportional to the concentration of the gas.
Infrared gas sensors are highly selective and can detect a wide range of gases, including carbon
dioxide, methane, and hydrocarbons.
Metal Oxide Gas Sensors
Metal oxide gas sensors use a metal oxide semiconductor to detect gases. The metal oxide reacts with
the gas molecules, changing the electrical resistance of the sensor. This change in resistance is
measured and converted into a concentration value. Metal oxide gas flow sensor are highly sensitive
and can detect low levels of gas concentration. They are commonly used for detecting gases such as
carbon monoxide, nitrogen dioxide, and ozone.
Vacker’s range of Gas Sensors
Several atmospheric gases, including dangerous and harmless gases are detected using gas sensor
module. Chemical sensors are those that use the chemical composition of the gas as a component of
the detection process. To assess the gas content, many technologies are employed. As all of these
sensors also go by the name "gas detectors," it is important not to confuse the two names when
referring to them.

3. Various gas sensors are CO2 sensor, CO sensor, O2 sensor, Hydrogen sensor, Methane (CH4) sensor,
LPG (Liquid Petroleum Gas) sensor, Gas leakage sensor, Nitrogen Dioxide (NO2), Hydrogen Sulfide
(H2S), Ammonia, Sulfur Dioxide (SO2), Ozone (O3) sensor, Natural Gas (CNG) sensor, Argon detector
etc.
For various applications, many versions of fixed and portable gas sensor module are available. Those
who must carry them and check the gas levels before entering restricted spaces, hazardous regions,
etc. must utilize portable sensors in industrial and hazardous environments. Gas detection metres are
another name for the portable versions.
Conclusion
Gas sensors are essential devices used in various industries to detect and measure the concentration
of gases in the air. The type of gas sensor used depends on the specific gas being detected, the
concentration range, and the application.
Electrochemical gas sensors, semiconductor gas sensors, infrared gas sensors, catalytic gas sensors,
photoionization detectors, and metal oxide gas sensors are some of the commonly used gas sensors.
Each sensor has its advantages and disadvantages, and the choice of sensor depends on the specific
application requirements.
When choosing a gas sensor for an industrial automation application, careful consideration of the
type of gas being detected, sensitivity and accuracy, operating environment, and cost is crucial.
In hazardous and industrial environments, Vacker's portable sensors can be used by those who need
to carry them and check the gas levels before entering confined places, risky areas, etc. We have
access to numerous fixed and portable gas detector models for a variety of purposes. For more
details , contact us.