Detection of gas using catalytic sensors is based on the use of chemical catalysis to detect the presence of hazardous gas substances in the environment. Catalytic sensors consist of two main components: the catalytic sensor element and the measurement system.

The catalytic sensor element is made up of two rods or wires coated with platinum or another metallic coating, covered with a special catalyst. When gas passes through the catalytic element, a chemical reaction occurs with the catalyst, resulting in a temperature change in the element. This temperature change is proportional to the gas concentration in the environment.

The measurement system in a catalytic sensor consists of a thermistor that measures the temperature of the catalytic element. The thermistor is an electronic temperature sensor that generates an electrical signal proportional to the temperature change. This signal is then processed by the electronic system to generate a gas concentration reading.

Catalytic sensors are particularly effective in detecting combustible gases such as methane, propane, or hydrogen. When a combustible gas is present in the environment, a combustion reaction occurs on the catalytic sensor element, causing an increase in temperature. This temperature increase is measured and processed into a gas concentration reading.

Catalytic sensors are widely used in various applications, such as gas detection in industry, indoor air quality monitoring, and explosion-proof safety systems. They are relatively inexpensive, durable, and easy to use, making them popular among users. However, catalytic sensors have certain limitations, such as insensitivity to certain gases like oxygen or carbon dioxide, and limited lifespan when exposed to toxic substances or other contaminants. Therefore, there are also other gas detection technologies that can be used depending on specific applications and requirements.

Integrated IR FEATURES:

• Triple Range with linear approximation in each case
• Gas Sensor with Automatic Switchover between ranges,
• High Resolution up to 10ppm,
• Detectivity Level at 100ppm,
• Analog Output of gas concentration,
• Serial port communication,
• Internal Temperature sensor
• Active & Reference Signals Monitored
• Full Faults Diagnostics & Error Generation
• Cyclic Redundancy Check (CRC)
• Four Different Modes of Operation
• Typical Low power consumption < 32mA (Average)
• Factory calibrated for Methane, Propane or Carbon Dioxide
• Evaluation Kit available including PC software for easy testing and production calibration functions
• Easy implementation into Sensors Network
• Design for use in Hazardous Areas
• Certified Sensor for use in Explosive Atmospheres (EX)