Non Dispersive Infrared NDIR Gas Analyzer Safety Monitoring 0.01% Resolution

NDIR Gas Analyzer CO CO2 CH4 CnHm High-Stability Infrared Detectors Process Gas Monitoring

NDIR (Non-Dispersive Infrared) gas analyzers are instruments used to measure the concentration of various gases in a sample based on their absorption of infrared light. These analyzers are commonly used for detecting and quantifying gases such as carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), and other infrared-active gases. Here's an overview of how NDIR gas analyzers work:
1. Principle of operation: NDIR gas analyzers operate on the principle that different gases absorb infrared light at specific wavelengths. The analyzer consists of a light source that emits infrared radiation, an optical chamber or gas cell, and a detector that measures the intensity of the transmitted or reflected light.
2. Gas measurement process: The gas sample is introduced into the optical chamber or gas cell of the analyzer. The infrared light passes through the chamber, and the gas molecules in the sample absorb specific wavelengths of light that correspond to their molecular vibrational frequencies. The intensity of the transmitted or reflected light is then measured by the detector.
3. Reference and sample measurements: NDIR analyzers typically employ a dual-beam configuration. The light source is split into two beams: a reference beam and a sample beam. The reference beam passes through a reference cell filled with a known concentration of the target gas or a non-absorbing gas, while the sample beam passes through the gas cell containing the gas sample.
4. Differential measurement: By comparing the intensities of the reference and sample beams, the analyzer can determine the absorption of infrared light caused by the target gas in the sample. The difference in light intensity between the two beams is proportional to the concentration of the gas being measured.
5. Calibration and data interpretation: NDIR gas analyzers require calibration to establish a relationship between the measured light intensity and the gas concentration. Calibration is typically performed using calibration gases with known concentrations of the target gas. The analyzer's calibration curve or algorithm is used to convert the measured light intensity into gas concentration readings.
6. Output and data analysis: NDIR gas analyzers provide output in the form of gas concentration readings, which can be displayed on the instrument's screen or transmitted to a data acquisition system. Some analyzers may offer additional features such as data logging, averaging, or real-time data analysis.
7. Maintenance and troubleshooting: Regular maintenance, including cleaning the optical chamber, replacing filters or windows, and verifying calibration, is important for ensuring the accuracy and reliability of NDIR gas analyzers. Troubleshooting procedures for issues such as drift, signal noise, or system errors can typically be found in the analyzer's user manual or provided by the manufacturer's support.
NDIR gas analyzers are widely used in various industries and applications, including environmental monitoring, industrial process control, emissions monitoring, indoor air quality assessment, and safety monitoring.


NDIR gas analyzer IR-GAS-600 this model high-stability infrared detectors for simultaneously measuring CO, CO2, and CH4. H2 always reads correctly, independent of the background gas composition. An optional non-depleting paramagnetic sensor can be used to conduct O2 analysis. All sensors/detectors are temperature-controlled or temperature-compensated for maximum analytical stability.

Both types of analyzers are available with analysis of:

• Carbon Monoxide (CO) via infrared detector
• Carbon Dioxide (CO2) via infrared detector
• Oxygen (O2) via electrochemical sensor or optional paramagnetic
• Methane (CH4) via infrared detector

☑ Measure COppm+CO2+CH4ppm+N2Oppm in the one unit

☑ Measure CO%+CO%+CO2%+CH4%+CnHm% in the one unit
IR-GAS-600 series suitable for process gas analysis