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