Carbon dioxide measurement is required in many applications from building automation and greenhouses to life science and safety. Many technologies are used to measure CO2. Infrared (IR) sensing is the most widely applied one.
Benefits of IR sensors over chemical sensors:
CO2 is a colorless and odorless gas that is soluble in water. It is the bubbles in the fizzy drink, a greenhouse gas, a byproduct of burning reactions, and in the air we exhale. CO2 is itself non-combustible and inert gas, which makes reliable measurement challenging. The most dependable method for CO2 measurements is Vaisala CARBOCAP® carbon dioxide sensor, an optical infrared measurement with groundbreaking innovations.
Learn how to measure CO2
Vaisala uses a single-beam and dual-wavelength NDIR (Non-dispersive infrared) technology for measuring CO2. The patented CARBOCAP® technology is used in all its CO2 sensors. This technology incorporates a unique tunable band pass filter that was developed by Vaisala and is manufactured in our own state-of-the-art cleanroom.
The CARBOCAP® sensor allows for measurement of both the CO2 absorption signal and a reference signal using a single set of components. Because of this, Vaisala is getting a real reference measurement in every measurement cycle. This eliminates the most common drift factors normally associated with all other NDIR sensors. The results of this breakthrough are excellent long-term stability, a long service life and the ability to function in the most demanding environments, including warm, humid, and dusty environments.
Vaisala CARBOCAP® instruments are well suited to a wide range of applications, from ppm (parts per million) to percentage-level CO2 measurements. Since CO2 replaces oxygen, it can be harmful to people in very high concentrations. CO2 is present at percentage levels only within closed processes such as fermentation and controlled-atmosphere storage environments. Percentage-level measurements are also typical in life-science applications such as CO2 incubation.
The unique design of CARBOCAP® results in recommended calibration intervals of up to 5 years.
Its microglow light source is rated for 15+ years of stable light output providing many years of trouble free use.
Suitable for use in spaces occupied 24/7 as well as dusty and dirty industrial environments. CARBOCAP® does not rely on the assumption of CO2 concentrations dropping to background levels in order to make any drift compensations.
Shows correct values immediately after power-up because the CARBOCAP® does not need to “learn” its environment like other technologies do.
Supermarkets all over Australia and New Zealand are benefiting from advanced carbon dioxide monitors as new natural refrigeration systems are installed in the fight against climate change. Woolworths, and its cold chain partner Emerson, therefore needed an accurate, reliable CO2 monitor that could fulfill this vital role as the Group expands the use of natural refrigerants in its stores.
HVAC system condition monitoring becomes a crucial requirement considering Infosys’s goal to provide best indoor environmental quality (IEQ) and to provide most productive work spaces in the world to its employees. IEQ has a direct impact on employee productivity.
Most of us know that CO₂ is a colorless, odorless gas that’s soluble in water and often seen as the bubbles in fizzy drinks. But it’s also a greenhouse gas, a by-product that’s released when we burn materials containing carbon, as well as a gas formed in the respiratory and metabolic processes of living organisms, which can also be considered slow burning reactions.
Accurate data on the CO2 level enables better decision-making for more sustainable food production, storage, and logistics. In this webinar, we discuss how safety, productivity and quality of food products can be substantially improved with the help of reliable CO2 measurement using a unique CARBOCAP® technology.
CO2 needs to be carefully controlled, for example, in vegetable storage facilities, fruit-ripening rooms, frozen foods, food transportation companies, supermarkets, industrial refrigerators, breweries, wineries, logistics hubs and terminals, and storage and transportation of dry ice.
To make sure that your incubator works properly and maintains the desired CO2 concentration, CO2 must be measured and controlled with great precision. How can this be achieved? Our three experts, Juhani, Maria and Piritta, discuss CO2 measurements in cell-culture incubators.
Professionals in HVAC field often know the gains in using carbon dioxide (CO2) as a parameter in HVAC controls. What is sometimes overlooked, is that any type of CO2 measurement won't help to achieve better energy efficiency. There are few tips in using CO2 as a proxy measurement leading to cost savings and better conditions in all buildings every HVAC professional should know.