Cryogenic Hygrometer

Product Announcement from Buck Research Instruments, LLC

Cryogenic Hygrometer-Image

Buck Research Instruments' CR-3 Cryogenic Hygrometer utilizes a closed cycle cryocooler, but differs in that it cannot be used on aircraft. The CR-3 is specifically designed for long-term, continuous-use applications where the instrument will be mounted in a fixed location such as a laboratory.

Click here for the Operating Manual

Click here for the Data Sheet

Cryocooler lifetime is greatly extended for the CR-3. Typically, MTBF is over 100,000 hours for the cooler.

Options include:

· Special sample chamber and mirror assembly for toxic and corrosive gases

· Helium-leak checked

· RS-232 port, in addition to voltage, current and alarm outputs

Measurement Range:

· Dew/frost point temperature -120 to +30°C

· Lowest Concentration ppbv

· Sea Level <1

· 100 psig (7.8 bar) <.5

Reading Accuracy °C

· Entire Range ±0.1°C

· Concentration ±2%

Typical Response Time: 10-20 seconds

Operating Range:

· Temperature -40 to +60°C

· Pressure, psia (bar) 5 to 115 psia (0.3 to 7.8 bar)

· Air/Gas flow range 0.2 to 3 liters/min

Cooling Mechanism: Kleemenko Cycle Cryocooler

Power Requirements:

· Standard 115 vac, 60Hz, <250W

· Optional 220-240 vac, 50-60Hz

· Outputs 0-10V, 4-20mA, Alarm, RS-232

Note: These are approximate specifications. Exact performance will vary depending on installation and operating environment. The right to make technical changes is reserved.

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