Nondispersive Infrared (NDIR) CO2 Analyzer
This optical instrument uses infrared spectroscopy to measure carbon dioxide concentrations in gas samples for environmental monitoring and HVAC systems. It falls under HTS 9027.10.40.00 as a gas analysis apparatus employing optical detection principles for precise CO2 quantification.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If electrochemical sensing used instead of optical
Electrochemical gas analyzers fall under non-optical apparatus in 9026.
If when integrated into complete industrial monitoring systems
Machines with multiple functions may classify as complete systems rather than individual instruments.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify optical detection method in technical specs to confirm 9027 classification vs electrochemical sensors
• Include calibration certificates and emission compliance docs for EPA/CBSA clearance
Related Products under HTS 9027.10.40.00
Portable Optical Smoke Density Meter
Handheld device using light obscuration to measure smoke density and particulate matter in ambient air or vehicle exhaust. Meets HTS 9027.10.40.00 criteria as optical apparatus for smoke/gas analysis.
Biogas Optical Methane Analyzer
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Cavity Ring-Down Spectroscopy Trace Gas Analyzer
Ultra-sensitive optical spectrometer measuring ppb levels of water vapor, isotopes, and greenhouse gases using laser cavity decay time. HTS 9027.10.40.00 for advanced optical gas analysis.
Raman Gas Analyzer for Explosive Detection
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Photoacoustic Gas Monitor
Infrared photoacoustic spectroscopy analyzer detecting multiple trace gases through sound wave generation in modulated light-absorbed gas. Optical modulation classifies under HTS 9027.10.40.00.
Quantum Cascade Laser HCl Analyzer
QCL-based optical analyzer for continuous hydrogen chloride monitoring in incinerator and semiconductor process gases. Mid-IR laser absorption qualifies for HTS 9027.10.40.00.