Gas analysers

Understanding Gas Analysers and Their Applications

Gas analysers are designed to identify and quantify the presence of gases in a mixture, helping industries ensure safety, comply with environmental regulations, and optimise processes. They are widely used in sectors such as environmental monitoring, petrochemicals, metallurgy, and healthcare.

Key considerations when selecting a gas analyser include:

• Type of gas: Commonly analysed gases include oxygen (O2), carbon dioxide (CO2), carbon monoxide (CO), nitrogen oxides (NOx), hydrogen sulphide (H2S), and volatile organic compounds (VOCs).
• Measurement range and sensitivity: Depending on the application, you may require detectors capable of measuring low ppm (parts per million) or even ppb (parts per billion) levels.
• Technology employed: Techniques vary, such as infrared (IR), electrochemical sensors, paramagnetic analysis, or gas chromatography, each suited to different gases and accuracy needs.
• Portability and form factor: Portable devices allow spot-checking and field measurements, whereas fixed installations are used for continuous monitoring.
• Calibration and maintenance: Ease of calibration and availability of service support are important for long-term reliability.

Choosing the right gas analyser involves understanding your specific environment and gases to be monitored. These instruments may also be referred to as gas detectors, gas monitors, or gas sensors depending on their function and design.

QuestPair offers a range of second-hand and refurbished gas analysers suitable for diverse analytical needs.