Product Announcement from Buck Research Instruments, LLC


Hygrometer for Stratospheric Research CR-2-Image

Cryogenic Hygrometer - CR-2 - from Buck Research Instruments L.L.C.

The CR-2 exhibits the same wide range, fast response and high reliability as the CR-1A, but it is smaller and lighter in weight. Mirror cooling is done by a closed cycle cryocooler rather than liquid nitrogen. Maintenance requirements are minimal.

Benefits of the CR-2

  • Wide Range: down to -105 °C (5 ppb)
  • Fast Response Time: typically 10- 20 sec.
  • Inherent Stability and Accuracy
  • NIST-traceable
  • Very Low Maintenance

The CR-2 exhibits the same wide range, fast response and high reliability as the CR-1A, but it is smaller and lighter in weight. Mirror cooling is done by a closed cycle cryocooler rather than liquid nitrogen. Maintenance requirements are minimal. Conversion of dew / frost point readings to other humidity / moisture units is straightforward, and appropriate equations are included.

Maintenance requirements for the CR-2 are minimal. Aside from occasional mirror cleaning, the cryocooler needs to be renewed every 10,000 hours of use. Both the control circuitry and the sensing assembly are mounted together into a single compact unit. A separate display module is provided that displays the dew / frost point and housekeeping signals. (For aircraft operation, the display module is not required.)

The CR-2 includes a ±0.1% accuracy pressure transducer, essential in demanding applications for compensating the dew/frost point temperature for minute differences between sample chamber pressure and atmospheric pressure.

To download the Operating Manual for the CR-2 Model, click here:

http://hygrometers.com/wp-content/uploads/CR-2-users-manual-2009-12.pdf

 
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