Optica Series Chilled Mirror Hygrometers
The Optica Chilled Mirror Hygrometer is the best choice for laboratory, industrial and calibration applications where precise water vapor measurement and control of gas atmospheres is critical.
Chilled Mirror Hygrometers
Chilled mirror sensors use a thermoelectric cooling module to cool the mirror exposed to a flowing gas sample. Infrared light is then used to reflect from the mirror and the reflected light received at a photodetector. The received light at the photodetector decreases due to the absorption and scattering. The signal from the photodetector is utilized in a control loop to maintain constant mass and a precision RTD measures the temperature of the mirror. The mirror temperature is by definition equal to the dew or frost point temperature. This technology provides long term stability and high precision readings.
