Dwyer Series RHP-EW Humidity Transmitter Controller from Japan
Dwyer RHP-EW combines humidity sensing with PID control output for process applications like pharmaceutical drying rooms. It automatically maintains humidity setpoints by modulating humidifiers or exhaust fans based on real-time RH measurements. Classified under HTS 9032.89.60.70 for humidity process control instruments.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Provide PID control algorithm specifications proving automatic stabilization per Chapter 90 Note 7
• Label as 'process control instrument' not 'transmitter only' to prevent 9031 misclassification
• Watch for country-of-origin marking on sensor components; Chinese assemblies often need detailed BOM