Dwyer Series RHP-EW Humidity Transmitter Controller from Canada
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 — Canada → United States
11.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 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