Measuring principle: 测量原理: | UV-Absorption紫外线吸收 |
Wavelength: 波长: | 253,7 nm253,7nm |
UV source: 紫外光源: | electrodeless low-pressure mercury lamp (EDL)无极低压汞灯(EDL) |
Measuring cell: 测量单元: | fused silica, heated to avoid condensation熔融石英,加热以避免冷凝 |
Stabilization method: 稳定方法: | lamp control by reference beam feedback; Auto-zero通过参比光束反馈控制光源;自动归零 |
Measuring ranges: 测量范围: | range I: 0.1 to 100 µg/m³ (0.01-10 ppb)范围Ⅰ:0.1-100µg/m³(0.01-10 ppb) range II: 0 to 1000 µg/m³范围Ⅱ:0-1000µg/m³ range III: 0 to 2000 µg/m³ (0-200 ppb)范围III:0-2000µg/m³(0-200 ppb) |
Sensitivity: 灵敏度: | 0.1 µg/m³ (0.01 ppb) 0.1µg/m³(0.01 ppb) |
Response time 响应时间(99% signal): (99%信号): | < 1 second ; continuous operation and real-time reading <1秒; 连续运行和实时读值 |
Alarm: 报警方式: | 3 levels programmable 3级可编程 |
Status alarms: 状态报警: | measuring cell soiled, battery state (option, UV source exhausted测量单元受污染,电池状态(选项:紫外光源耗尽) |
Display: 显示方式: | 带背景照明的graphical LC display with background illumination图形液晶显示器 |
Signal outputs: 信号输出: | 4...20 mA; RS 232 for PC or printer ; data logger function (option) 4 ... 20 mA;RS-232接口连接PC或打印机,数据记录功能(可选) |
Battery option: 电池选项: | external 12 DC source; optional 12 V batteries integrated, ca.外部12V直流电源;可选12V集成电池,工作时长5h |