Infrared energy emitted by light source is passed through gas chamber containing the air sample, and the quantitative absorption of energy by CO in the sample cell is measured by corresponding detector.
GFC (Gas filter correlation) technology is utilized to remove interference caused by moisture and other backgrounds. Two gas filled chambers are mounted on a rotating disc, which pass through an IR beam alternately. The measure chamber is filled with nitrogen while the reference chamber is filled with high concentration CO. IR beam then passes through the sample gas cell. The difference in absorbance is measured and provides a direct output of the gas concentration.
Stored data are easily retrievable through the serial or ethernet port via PC client software, allowing operators to perform predictive diagnostics and enhanced data analysis by tracking parameter trends.
Standard Range | Min: 0~100 ppb F.S. Max: 0~10 ppm F.S. (Selectable) |
Zero Noise | < 0.3 ppb (RMS) |
Span Noise | < 0.5% of reading (RMS) above 100 ppb |
Lower Detectable limit | < 1 ppb |
Zero Drift (24 hours) | < 1 ppb |
Span Drift (24 hours) | < 1% F.S. |
Response Time | < 20s (T90) |
Precision | < 0.5% |
Linearity | < 1% F.S. |
Sample Flow Rate | 800 cc/min ±10% |
Operating Temperature | 20~30°C range (per US EPA guidelines). Instrument may be safely operated over the range of 5~40°C |
Power Requirement | 100~240 VAC, Converter applicable |
Dimensions and Weight | 178mm(H) x 432mm(W) x 609mm(D), 15kg |