Chilled mirror hygrometer – OptiSonde™

Chilled mirror hygrometers are used in standards and metrology labs as well as in industrial applications where precise and repeatable humidity measurement and control are required. The inherent accuracy and long term stability provide many advantages over other types of humidity measurement technologies.


  • Measurements traceable to national standards
  • Built-in data logger
  • Multiple measurement units can be displayed and transmitted
  • Patented PACER® cycle automatically cleans mirror to ensure measurement integrity
Enclosure material  : Wall mount: Cast aluminum, Bench top: Aluminum body with plastic front bezel
Digital interface  : RS-232
Operating temperature  : Analyser: -10°C to 60°C
Cooling slew rate  : 1.5°C/sec


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