内容标题29

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                CO analyzer

                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,

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                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.

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                (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