HS Code for Temperature Sensors and Thermocouples
The HS Code for temperature sensors and thermocouples is 902519. The MFN duty rate for importing to the US is 3.2%.
| HS Code (6-digit) | 902519 |
|---|---|
| US Duty Rate (MFN) | 3.2% |
| EU Duty Rate (MFN) | 2.1% |
| Chapter | 90 |
| Heading | 9025 |
| Last Updated | 2026-05 |
Description
Other thermometers and pyrometers, not combined with other instruments
HS Code 902519 covers other thermometers and pyrometers, not combined with other instruments, with a US MFN duty rate of 3.2%.
Frequently Asked Questions
What are the critical packaging requirements for shipping thermocouples and temperature sensors under HTS 902519 to prevent customs delays?
Thermocouples and sensors under HTS 902519 must be packaged to prevent physical damage to their delicate sensing elements and to clearly segregate any spare parts or accessories, as these may have different tariff classifications. Using anti-static materials and robust, clearly labeled boxes is essential, as improper packaging leading to damage is a common cause for customs inspection and valuation disputes. Include detailed packing lists specifying quantities and model numbers for each type of sensor to facilitate accurate HS code verification.
What specific documentation is required by U.S. Customs for importing thermocouples under HTS 902519 that originate from or contain materials from China?
For thermocouples and temperature sensors under HTS 902519 containing Chinese origin, U.S. importers must provide a country of origin marking compliant with 19 CFR 134 and may be subject to Section 301 tariffs. Shipments valued over $800 require a formal entry with a detailed commercial invoice and, if applicable, documentation proving any claimed tariff exclusions. Certain models with potential dual-use applications may also require an import license from the Bureau of Industry and Security (BIS).
Does the material composition of the sensing element (e.g., metal alloy type) change the classification of a temperature sensor under HTS 9025.19?
Yes, the specific metal alloy used in the thermocouple junction is critical for correct classification within subheading 9025.19. For example, a sensor using a base-metal thermocouple (e.g., Type K, Ni-Cr/Ni-Al) is classified differently under 9025.19.20, while one using a noble-metal thermocouple (e.g., Type R, Pt/Pt-Rh) falls under 9025.19.40. The material directly determines the 10-digit statistical suffix and duty rate.
Import Considerations by Country
Imports of temperature sensors and thermocouples under HTS 902519 may face specific country restrictions. For example, shipments to Brazil often require an Inmetro certification for products used in regulated sectors. Similarly, Russia and other Eurasian Economic Union (EAEU) countries typically require a GOST-R or EAC conformity assessment. The United States may apply International Traffic in Arms Regulations (ITAR) controls if the sensor is specifically designed for certain defense or aerospace applications, though this is rare for standard commercial models.
Common Classification Mistakes for Temperature Sensors
A frequent error is misclassifying temperature transmitters (which output a standardized signal like 4-20mA) with sensors. Transmitters are typically classified under HTS 9030.89 or 9032.89, not 9025.19. Also, ensure the sensor is not part of a larger control apparatus; functional units are classifiable elsewhere, like under heading 9032. Finally, simple bimetallic strip thermostats for electrical circuits are specifically excluded from 9025 and belong in HTS 8536.50.
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