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Understanding NDIR Sensors

Introduction

In the realm of gas detection, precision is paramount. Understanding how gases are detected and measured is crucial for ensuring safety and efficiency in various applications. One such technology that has revolutionized gas sensing is Non-Dispersive Infrared (NDIR) sensors. In this blog, we'll delve into the workings of NDIR sensors, their applications, and why AGS Controls relies on them for refrigerant VRF detection and carbon dioxide sensing.

What is an NDIR Sensor

NDIR sensors utilize the principle of infrared absorption to detect specific gases in the atmosphere. This technology relies on the fact that different gases absorb infrared light at distinct wavelengths. By measuring the amount of infrared light absorbed by a gas sample, NDIR sensors can accurately determine its concentration in the surrounding environment.

Understanding NDIR Sensors:

NDIR sensors consist of three primary components: an infrared light source, a sample chamber, and a detector. The infrared light source emits light at specific wavelengths, which passes through the sample chamber containing the gas to be measured. If the gas molecules in the chamber absorb infrared light at the source's wavelengths, the detector will register a decrease in light intensity. By quantifying this reduction in intensity, NDIR sensors can calculate the gas concentration with high accuracy.

Applications of NDIR Sensors:

NDIR sensors are versatile and find applications across various industries. They are commonly used to detect and measure gases such as carbon dioxide (CO2), methane (CH4), and refrigerants like R32 and R410A. AGS harnesses the precision of NDIR sensors in refrigerant VRF detection systems to ensure efficient and reliable detection of refrigerant leaks in HVAC systems. Additionally, AGS utilizes NDIR sensors in carbon dioxide sensors for accurate monitoring of indoor air quality, crucial for maintaining a healthy and safe environment.

Why AGS Choose NDIR Sensors in CO2 & Refrigerant Detection:

AGS chooses NDIR sensors for refrigerant VRF detection and carbon dioxide sensing due to their superior accuracy and reliability. Unlike other sensing technologies, such as electrochemical sensors, NDIR sensors offer exceptional sensitivity and specificity, minimizing the risk of false alarms and ensuring precise measurements. Moreover, NDIR sensors exhibit minimal drift over time, providing long-term stability and consistent performance, even in challenging environments with an expected life span of 10 years.

Conclusion

In the ever-evolving landscape of gas detection, NDIR sensors stand out as a pinnacle of precision and reliability. AGS leverages the power of NDIR technology to deliver cutting-edge solutions for refrigerant VRF detection and carbon dioxide sensing, ensuring unparalleled accuracy and efficiency. By embracing NDIR sensors, AGS reaffirms its commitment to safety, innovation, and excellence in gas detection solutions.


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