Categories: Analyzers Animation How It Works

NDIR Gas Analyser Working Principle

For NDIR Gas analyzer, the main components are an infrared source (lamp), a sample chamber or light tube, a wavelength filter, and the infrared detector. The gas is pumped (or diffuses) into the sample chamber, and gas concentration is measured electro-optically by its absorption of a specific wavelength in the infrared (IR). The IR light is directed through the sample chamber towards the detector.

The detector has an optical filter in front of it that eliminates all light except the wavelength that the selected gas molecules can absorb. Ideally other gas molecules do not absorb light at this wavelength, and do not affect the amount of light reaching the detector. The detector measures the attenuated signal depending amount of gas absorption and it is proportional to the measured gas concentration.

Also Read: Infrared Non Dispersive CO2 Analyzer Working Principle

You've successfully subscribed !

View Comments

Share

Recent Articles

Immersion Heaters in Lube Oil Consoles
  • Instrumentation Design

Immersion Heaters in Lube Oil Consoles

Rotating equipment packages such as pumps, compressors, turbines need the lube oil consoles for their…

9 hours ago
  • PLC Tutorials

How to Blink Lights in Ladder Logic?

This article explains how to blink lights in ladder logic with a detailed explanation video…

3 weeks ago
  • PLC Tutorials

From Boolean Algebra to PLC Logic

In this article, a simple example will teach you the conversion from Boolean algebra to…

1 month ago
  • PLC Tutorials

PLC Cooking Timer Example for Kitchen Automation

In this article, you will learn the PLC cooking timer example for kitchen automation using…

3 weeks ago
  • PLC Tutorials

Example PLC Program to Control a Pump based on Level Sensors

Learn an example PLC program to control a pump based on level sensors using ladder…

3 weeks ago
  • PLC Tutorials

PLC Timer Application in Security Camera Recording

In the PLC timer application for security camera recording, when motion is detected then camera…

3 weeks ago