Gas Analyzer Sensor Head
Electrochemical sensor head replacement for gas analysis apparatus measuring pollutants or emissions. Compatible with instruments of 9027.81 (gas/smoke analysis). Classified in 9027.90.56 for electrical parts of these analyzers.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for industrial process control use
Electronic gas/liquid flow measuring instruments parts may classify under 9026.
If classified as general current/voltage sensors
Burglar/fire alarms or similar electrical sensors fall in Chapter 85.
If sold as industrial valve regulators
Appliance regulators of pressure classified under heading 8481.
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
• Include sensor lifespan and calibration gas compatibility specs for proper valuation
• Declare hazardous material content if sensors contain electrolytes or metals
• Pair with maintenance records to prove principal use with chapter 90 instruments
Related Products under HTS 9027.90.56
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Replacement column assembly for gas chromatographs used in chemical analysis of samples. It is a part specifically designed for instruments of subheading 9027.30 (spectrometers and similar apparatus). Classified under 9027.90.56 as an electrical part for these analytical instruments.
Spectrophotometer Detector Module
Photodiode detector module for UV-Vis spectrophotometers measuring light absorption in chemical analysis. Designed exclusively for instruments of 9027.50 (instruments for physical/chemical analysis). Falls under 9027.90.56 as an electrical accessory.
Refractometer Prism Assembly
Optical prism and electrical readout assembly for refractometers measuring liquid concentrations. Part for instruments of 9027.20 (chromatographs, refractometers). Electrical component qualifies for 9027.90.56.
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Polarimeter Optical Cell Holder
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Viscosity Tester Probe
Electrical sensing probe for rotational viscometers measuring fluid viscosity in labs. Part for 9027.50 viscosity instruments. Qualifies under 9027.90.56 electrical parts.