VQ621T/1

Introduction

VQ621T/1 is a non-dispersive infrared (NDIR) gas sensor specifically designed for carbon dioxide detection. The VQ621T/1 gas sensor can measure CO two concentrations ranging from 0 parts per million (ppm) to 10,000 ppm. This type of device is suited for monitoring indoor air quality and use in a multitude of applications, such as incubators, hothouses, and many industrial plants.

Application Fields

The VQ621T/1 gas sensor is applicable for indoor air quality control in offices, homes, and other non-industrial applications. The device is also able to detect and monitor the presence of other toxic gases at low concentrations such as carbon monoxide or nitrogen dioxide. With the high degree of accuracy and the ability to measure CO two concentrations over a wide range, it is suitable for use in numerous scientific and industrial applications. For example, it can be used in environmental laboratories, pollution monitoring systems, climate change research, and in greenhouses. It is also applicable for medical applications which require close monitoring of ambient air conditions.

Working Principle

The VQ621T/1 gas sensor utilizes a ‘pre-heating’ element using the energy of an infrared lamp. When the pre-heating element is activated, infrared energy heats up a small chamber containing a gas sample. As the sample warms, a protective cap is removed, allowing fresh air to enter the chamber. IR energy is then scanned through the chamber and the voltage difference between the pre-heated and post-heated sample is measured via a thermopile sensing element. Since different gases absorb infrared energy at different levels, the change in voltage can be used to accurately measure concentrations of CO two .

Conclusion

The VQ621T/1 is an advanced non-dispersive infrared gas sensor specifically designed for carbon dioxide detection. It is suitable for use in indoor air quality control and numerous scientific and industrial applications, such as environmental laboratories, pollution monitoring systems, climate change research, and medical applications. The device works by using a pre-heating element to warm a chamber that contains a gas sample. Different gases absorb infrared energy at different levels and the voltage change is then used to measure the concentrations of CO two.