(1) Technical principles
The ozone analyzer of ultraviolet spectrophotometry is based on beer Lamber law,
O3 molecules have characteristic absorption of UV light with wavelength of 254nm. The absorption value is proportional to the concentration of ozone. Through the solenoid valve, the sample gas and the sample gas without ozone can alternately pass through the gas pool to measure the absorption value and obtain the ozone concentration.
（2）Technical index
指标 | 数值 |
测定范围 | 0~500ppb、0~10ppm(可调试) |
单位 | ppb，ppm，ug/m3，mg/m3 |
零点噪声 | <0.2ppb(RMS) |
最低检出限(LDL) | 0.4ppb(RMS) |
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 | <10kg |
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
■ principle of ultraviolet photometry
■ stable flow control system
■ use the electronic flow sensor to monitor the sample gas flow through the optical chamber
■ built in AC mechanical vacuum pump with Teflon pump membrane
■ task software allows monitoring of test data during operation
■ continuous self check with alarm function
■ multi function operation by microprocessor
■ self check function of light source intensity attenuation
■ bidirectional RS-232 port for remote control
■ adaptive signal filtering technology to optimize response time
■ digital status output instrument working parameters
■ with temperature compensation and pressure compensation
■ color display, touch screen operation
■ large capacity memory, automatic storage of historical data
