Dwyer Series RHP-EW Humidity Transmitter Controller from China
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 — China → United States
36.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
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