The CR-3 is specifically designed for long-term, continuous-use applications
The new CR-3, like the CR-2, 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 mounted in a fixed location such as a laboratory.
Cryocooler lifetime is greatly extended for the CR-3. Typically, MTBF is over 100,000 hours for the cooler.
Options include a special sample chamber and mirror assembly for toxic and corrosive gases. Like all our instruments, the CR-3 is helium-leak checked. In addition to voltage, current and alarm outputs, the CR-3 has an RS-232 port.
CR-3 Hygrometer Specifications
|Dew / frost point temperature||-120 to +30°C|
|Lowest Concentration ppbv|
|100 psig (7.8 bar)||<.5|
|Reading Accuracy °C|
|Typical Response Time||10-20 seconds|
|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|
|Standard||115 vac, 60 Hz, <250 W|
|Optional||220-240 vac, 50-60Hz|
|Outputs||0-10V, 4-20mA, Alarm, RS-232|