INSTRUMENTS LLC
PO BOX 19498
BOULDER, CO 80308
PH: 800.HUMIDITY
OR 303.442.6055
FX: 303.443.2986
CR-3 CRYOGENIC HYGROMETER
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.
To download a brochure detailing the CR-3 specifications, click here.
To download the Operating Manual for the CR-3 Model, click here.
| CR-3 Hygrometer Specifications |
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| Measurement Range | |||
| Dew / frost point temp. °C | -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 °C | -40 to +40°C | ||
| Pressure, psia (bar) | 5 to 115 psia (0.3 to 7.8 bar) | ||
| Air / Gas flow range liters/min. | 0.2 to 3 liters/min | ||
| Cooling Mechanism | Kleemenko Cycle Cryocooler | ||
| Power Requirements | |||
| Standard | 115 vac, 60 Hz, <250 W | ||
| 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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