The APM-302 measurement principle is based on carbon monoxide detection by absorption of infrared light.The concentration of CO in the sample is determined by measuring the quantity of infrared light.
应用
The APM-302 measurement principle is based on carbon monoxide detection by absorption of infrared light.
The concentration of CO in the sample is determined by measuring the quantity of infrared light, at a specific wavelength, absorbed by the sample gas as it flows through a multi-reflection chamber.
-The multi-stage gas filtration, to avoid the reaction pool pollution, and prolong the system maintenance cycle.
-Unique correlation wheel design, long service life, and stable measurement.
|
operational principle |
Absorption of infrared light |
|
Measurement Range |
0-50 ppm open end |
|
Measurement unit |
ppm or mg/m³ |
|
Lowest detection limit |
0.04ppm |
|
Noise |
0.02ppm |
|
Zero drift |
±0.2ppm/24h |
|
Span drift |
±1%/24hF.S |
|
Precision |
±1% / 24hF.S |
|
Response time |
<60s |
|
Sample flow-rate |
700sccm±10% |
|
Output interface |
Analog signals:0-0.5V/2V/5V/10V(4-20)mA Digit signals:RS232 or RS485 |
|
Power supply |
AC220V±10%,50Hz |
|
Working atmosphere |
Temperature:5-40 °C Relative humidity:<85% |
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