内容标题35

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                NOx, NH3 analyzer

                Model: aqms-2000 chemiluminescence analyzer. 

                (1) Technical principles 

                The basic principle of NOx analyzer is chemiluminescence. No reacts with O3 to absorb chemical energy and generate excited NO2 *.

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                The excited state of NO2 * is unstable, and the fluorescence is released in the form of light quantum during the process of returning to the ground state. The concentration of no can be calculated by measuring the fluorescence intensity through PMT.

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                The concentration of NOx is measured after all NO2 in the sample gas is converted into no by molybdenum conversion.

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                (2) Technical indicators


                指标

                数值

                测定范围

                0~500ppb、大范围0~20,000ppb(可调)

                单位

                ppb,ppm,ug/m3,mg/m3

                零点噪声

                <0.2ppb(RMS)

                最低「检出限(LDL)

                0.4ppb

                零点漂移

                <1ppb/24小时

                量程漂移

                <5ppb/24小时

                响应时间

                <120s

                重复性

                <1%

                采样流量范围

                400cm3/min±10%

                环境温度

                5℃~40℃

                尺寸(H×W×D)

                178mm×432mm×613mm

                重量

                <16kg,外接泵5kg

                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 features 

                ■ use of chemiluminescence Technology 

                ■ stable flow control system and constant temperature reaction chamber 

                ■ use electronic flow sensor to monitor sample gas flow

                ■ pressure compensation and temperature compensation options

                ■ independent measurement of no, NO2, NOx 

                ■ use external AC mechanical vacuum pump 

                ■ task software allows monitoring of test data during operation 

                ■ self check function of light source intensity attenuation 

                ■ continuous self check with alarm function 

                ■ a permeation drying tank is installed on the ozonator 

                ■ bidirectional RS232 port for remote control 

                ■ working parameters of digital state output instrument 

                ■ adaptive signal filtering technology optimizes response time

                ■ automatic monitoring of instrument parameters 

                ■ color display, touch screen operation 

                ■ large capacity memory, automatic storage of historical data