Model: aqms-3000 carbon monoxide analyzer
(1) Technical principles
The basic working principle of carbon monoxide analyzer is gas filtration correlation non dispersive infrared method: Based on the absorption of infrared light wave by CO molecule, it conforms to beer Lambert law,
The infrared light with a specific wavelength is preferentially modulated, and then passes through a gas chamber containing high concentration of carbon monoxide and a pure nitrogen gas chamber respectively. When the red light passes through a high concentration of carbon monoxide, the infrared light enters the sample gas chamber, and the co no longer absorbs the infrared light; when it passes through a pure nitrogen gas, the infrared light can be absorbed by the CO in the sample gas, and the information of the sample gas CO concentration is recorded. The measurement signal M and the reference signal R are obtained by the demodulation circuit, and the CO concentration can be calculated according to the M / R.
（2）Technical index
指标 | 数值 |
测定范围 | 0 ~1ppm、0~1,000ppm(可调试) |
单位 | ppb，ppm，ug/m3，mg/m3 |
零点噪声 | <0.02ppm(RMS) |
最低检出限(LDL) | 0.04ppm(RMS) |
零点漂移 | <0.1ppm/24小时 |
量程漂移 | <0.5ppm/24小时 |
响应时间 | <120s |
线性 | <1%/FS |
重复性 | <1% |
采样流量范围 | 800cm3/min±10% |
环境温度 | 5℃~40℃ |
尺寸（H×W×D） | 178mm×432mm×613mm |
重量 | <16kg |
电源 | 200V~240V、50/60Hz、400W |
模拟输出 | 10V、5V、1V、0.1V(可选) |
通讯规格 | RS232、RS485 |
（3）Functional characteristics
■ use of gas filter related technology
■ light chamber with temperature control and vibration protection
■ built in AC mechanical vacuum pump
■ multi function operation by microprocessor
■ bidirectional RS-232 port for remote control
■ digital status output instrument working parameters
■ with temperature compensation and pressure compensation options
■ task software allows monitoring of test data during operation
■ stable flow control system
■ use electronic flow sensor to monitor sample gas flow
■ continuous self check with alarm function
■ self check function of light source intensity attenuation
■ adaptive signal filtering technology to optimize response time
■ automatic monitoring of instrument parameters
■ color display, touch screen operation
■ large capacity memory, automatic storage of historical data
