Primary-Standard Chilled Mirror Hygrometers
Designed for laboratory calibration and high-accuracy moisture analysis
Designed based on the primary chilled mirror dew point principle, ensuring direct traceability to fundamental thermodynamic properties.
Key Features
• Primary-standard chilled mirror measurement principle
• Direct and fundamental dew / frost point determination
• Excellent long-term stability and repeatability
• Suitable for calibration laboratories and industrial field applications
RDP-70 Reference Hygrometer
Reference-grade chilled mirror hygrometer designed for calibration laboratories，ISO/IEC 17025 laboratories ，and national metrology institutes.
Measurement down to -70°C frost point
Primary-standard accuracy
Optimized for calibration laboratories
RDP-80 Reference Hygrometer
Reference-grade chilled mirror hygrometer designed for calibration laboratories，ISO/IEC 17025 laboratories ，and national metrology institutes.
Measurement down to -70°C frost point
Primary-standard accuracy
Optimized for calibration laboratories
RDP-60 Portable Hygrometer
Industrial-grade chilled mirror hygrometer designed for on-site moisture verification in gas systems and high-voltage power equipment.
Measurement down to -60°C frost point
Portable and rugged design
Stable performance in field conditions
RDP-206 SF₆ Dew Point Hygrometer
Industrial-grade chilled mirror hygrometer designed for dew point measurement in SF₆ gas-insulated and SF₆-containing gas mixtures power equipment.
High-accuracy chilled mirror dew point measurement
Optimized for SF₆ and SF₆ gas mixtures
Minimized influence from SF₆ phase transitions
Fast response for field measurements
Long-term stability without sensor drift field conditions
. For more information，please see the SF₆ measurement page.