Wireless Hygrograph Chart Recorder
Battery-powered hygrograph that records relative humidity levels on rotating paper charts using a hair tension or capacitive sensor mechanism. It qualifies for HTS 9025.80.40.00 as a hygrograph, a recording instrument specifically identified for humidity monitoring in labs and greenhouses.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If psychrometer (wet/dry bulb) recording
Psychrometers, even recording, have separate provisions within the same heading group.
If part of HVAC control system
Humidity sensors integrated into air conditioning apparatus fall under chapter 84.
If automatic process controller
Per chapter note, automatic regulating instruments shift to 9032 if controlling rather than just recording.
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Import Tips & Compliance
• Demonstrate humidity recording via charts or digital output logs to avoid reclassification as non-recording hygrometers
• Specify sensor type (hair/capacity) in invoices; capacitive types may face electronics scrutiny
• For wireless models, include FCC compliance docs for radio frequency components
Related Products under HTS 9025.80.40.00
Digital Thermograph Data Logger
A portable digital device that continuously records temperature variations over time using built-in sensors and stores data for later analysis. It falls under HTS 9025.80.40.00 as a thermograph, which is specifically listed as a recording instrument for temperature monitoring in environmental and industrial applications.
Mechanical Barograph Drum Recorder
A traditional analog instrument using a rotating drum and ink pen to graphically record atmospheric pressure changes over time. Classified under HTS 9025.80.40.00 as a barograph, one of the explicitly named recording instruments in this subheading for meteorological use.
Multi-Parameter Weather Recording Station
Integrated recording instrument combining thermograph, hygrograph, and barograph functions to log temperature, humidity, and pressure on a single chart or digital display. Falls under HTS 9025.80.40.00 as 'other recording instruments' combining listed types for comprehensive meteorological data collection.
Temperature Humidity Data Logger THD-200
Compact USB data logger model THD-200 that records temperature and humidity simultaneously with programmable intervals and LCD display. Classified in HTS 9025.80.40.00 as a combination recording instrument (thermograph/hygrograph) for laboratory and storage monitoring.
Chart-Type Barograph Weather Station
Desktop barograph featuring a seven-day chart drum that records atmospheric pressure with precision bourdon tube movement. It is a classic thermograph/barograph under HTS 9025.80.40.00 designed for home or professional weather observation.
Industrial Hygrothermograph Recorder
Wall-mountable industrial recorder that produces strip-chart records of temperature and humidity for manufacturing environments. Qualifies under HTS 9025.80.40.00 as a combined thermograph and hygrograph recording instrument for process monitoring.