Model: aqms-1000 ultraviolet fluorescence analyzer.
(1) Technical principles
The sulfur dioxide analyzer uses ultraviolet fluorescence technology for detection. The optical system is mainly composed of light source, gas chamber, PMT, reference detector, etc. during measurement, the ultraviolet light source emits 214nm light, and generates 330nm fluorescence through SO2 analysis excited by the gas chamber. The fluorescence intensity has a linear relationship with SO2 concentration. The reference detector is used to detect the light source intensity, and PMT detects the fluorescence intensity, root SO2 concentration is calculated according to the light intensity of reference detector and PMT detector.
(2) Technical parameters
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 |
线性 | <1%/FS |
重复性 | <1% 50ppb |
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 | <15kg |
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
■ using UV fluorescence technology
■ stable flow control system
■ pressure compensation and temperature compensation options
■ external AC mechanical vacuum pump
■ use electronic flow sensor to detect and display sample gas flow
■ high efficiency hydrocarbon remover and unique optical design, strong anti-interference ability
■ self check function of light source intensity attenuation
■ timing dark current compensation, high stability
■ continuous self check with alarm function
■ task software allows monitoring of test data during operation
■ bidirectional RS-232 port for remote operation
■ adaptive signal filtering technology to optimize response time
■ color display, touch screen operation
■ large capacity memory, automatic storage of historical data
■ automatic monitoring of instrument parameters
