Unveiling the Vital Role of CO2 Sensors in DCV Systems Along With ASHRAE 62.1 Latest Requirement

Why is it becoming increasingly imperative to install CO2 sensors in Demand Controlled Ventilation (DCV) systems?

With the progression of technological advancements in environmental management, the incorporation of CO2 sensors into Demand Control Ventilation (DCV) systems has become increasingly imperative. Recognizing this necessity, in March 2023, the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) introduced Addendum ab to Standard 62.1-2022, which elevated CO2 measurement standards to ±75 ppm at 600, 1000, and 2500 ppm concentrations. The adjustments in Addendum ab places increased emphasis on CO2 levels as a vital element for the efficient operation of DCV systems.

DCV is an effective control system used in fresh air systems to improve indoor air quality and achieve energy savings by automatically adjusting the ventilation rate. DCV system adopts CO2 sensors strategically placed in specific indoor spaces to continuously and accurately monitor indoor CO2 concentration levels in real-time. CO2 sensors will transmit the captured CO2 concentration data to the control unit of the ventilation control system, where the data is processed and analyzed. Usually, before the CO2-based DCV system starts running, the corresponding indoor CO2 concentration threshold is set in advance, and the set thresholds are generally in accordance with ASHRAE standards. When the CO2 concentration exceeds a set threshold, the control unit will send a control signal to the fresh air system to increase ventilation. Once the CO2 concentration drops below the set CO2 threshold, the fresh air system will reduce indoor ventilation. By applying CO2 sensors, the DCV system can better control ventilation based on actual demand.

The strategic deployment of CO2 sensors for DCV systems underscores the significance of ASHRAE's updated guidelines in ensuring optimal indoor air quality and sustainable building operations.

Cubic, specializing in advanced gas sensors and gas analyzers, has established a gas sensing technology platform based on NDIR technology that produces CO2 sensors with high accuracy, long lifespan, auto-zero-calibration mechanism, and continuous monitoring capabilities. In compliant with ASHREA Standard, Cubic NDIR CO2 Sensor empowers DCV systems to maintain outstanding indoor air quality and improve energy efficiency.

Supported by a resilient supply chain, Cubic seamlessly integrates innovation and lean production methods to fulfill burgeoning customer needs with comprehensive gas sensing solutions. Through the utilization of mass production and the integration of in-house components, Cubic ensures rigorous cost management, to deliver cost-effective products without sacrificing quality. Cubic also provides customized services to accommodate the flexible and diverse product requirements of customers.

With 20-year dedication to gas sensing technology, Cubic, as a leading manufacturer, will remain vigilant regarding changes in ASHRAE Standard to provide qualified and reliable gas sensing solutions globally. Cubic will keep devoting the best efforts in DCV applications, with the aim of driving significant technological advancements.