Vaisala HMT330 Process Humidity Transmitter
Vaisala HMT330 is a rugged process humidity transmitter with analog control outputs for industrial applications like food drying and cleanrooms. It features self-calibrating humidity probes and relay controls that automatically adjust process conditions. Falls under HTS 9032.89.60.70 as automatic humidity process control apparatus.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If laboratory-grade versions without industrial process control outputs
Lab measuring instruments for liquids/gases classify in 9026, excluding process control
If humidity-responsive control valves sold separately
Process control valves without integral measuring function classify in 8481
If integral to laboratory drying ovens
Parts of lab equipment principally used with specific apparatus follow the equipment heading
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Import Tips & Compliance
• Include ATEX/IECEx certifications for hazardous location models in entry documentation
• Specify 'process industry use' vs laboratory to justify 9032 over 9031 classification
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