Greenhouse Gas Measurement

GHG measurements are essential in the fight against climate change

Greenhouse gas (GHG) measurements are crucial in combating climate change. Carbon dioxide (CO₂), which accounts for 60-70% of the warming effect from human activities, is the primary GHG driving climate change. Accurate CO₂ measurements are essential for understanding and mitigating its impact.

Scientists, researchers, industries, and policymakers use GHGs data to monitor human and industrial emissions, develop emission reduction strategies, and implement climate change mitigation measures.

As a leader in environmental measurement technologies, Vaisala supports global initiatives like the WMO Global Greenhouse Gas Watch (G3W) and the World Economic Forum Initiative - Net Zero Carbon Cities, aiding efforts to track and reduce emissions.

Vaisala carbon dioxide probe GMP343 for environmental applications

Accurate CO2 concentration data is crucial for understanding the greenhouse gas (GHG) effect and climate change. Vaisala CARBOCAP® CO2 probe accurately measures CO2 concentrations with excellent long-term stability thanks to continuous reference measurement. The probe is designed for easy installation and maintenance-free operation.

Typical applications:

• GHG monitoring networks supplementing existing reference sites
• Urban GHG emission monitoring
• Industrial GHG emitter monitoring

Key featuresCO₂ Probe GMP343Measurement performanceHigh-end probe designed for accurate CO2 concentration measurement in outdoor conditions and permanent installationsAccuracy0–1000 ppm: ±(3 ppm + 1 % of reading)Long-term stabilityAt least ±10ppm/year or better, depending on the environmentHeating to prevent condensation in humid conditionsBoth sensor head and mirror are heatedCommunication interfacesRS485, RS232
Protocol: ASCIICompatible handheldMI70Power consumptionWithout optics heating: < 1 W
With optics heating: < 3.5 WIP classificationIP67Suitability for soil applicationYes, with soil adapter kit

CARBOCAP® technology inside

Vaisala has decades of expertise in CO₂ measurements.

First launched in 1997, the Vaisala CARBOCAP sensor features a groundbreaking innovation — the micromachined, electrically tunable Fabry-Pérot Interferometer (FPI) filter for built-in reference measurement. This reliable and stable sensor delivers accurate measurements across a wide range of industries and applications, from building automation and safety to life sciences and ecological research.

We use a single-beam and dual-wavelength NDIR (non-dispersive infrared) technology for measuring CO₂ concentrations. The patented CARBOCAP technology is used in all our CO₂ sensors, incorporating a unique tunable band pass filter that we developed and manufacture in our state-of-the-art cleanroom.