纯进口美国2B公司双光束紫外臭氧分析仪205采用紫外吸收法原理来测试样品中的臭氧浓度和去除臭氧的净化空气数值。它便携小巧，轻便易测，耗电量少，屏幕清晰，操作便利，集功能和实用于一体的*型臭氧分析仪，很好满足各个臭氧检测的应用场合，深受广大用户的青睐。该紫外测试技术是采用254nm波长的双光束光源，仪表测试相应仅需2秒时间，成为了相应时间极其短，测试精度高的臭氧分析仪。纯进口美国2B公司双光束紫外臭氧分析仪205量程很广，可测试低至1ppb，高达100ppm的臭氧浓度。
优势：
· 254nm高精度双光束紫外光吸收法
· 可以12V DC (5.0W)外置电源操作，耗电量低，
· 内置数据记录功能及实时时钟显示
· 3组仿真讯号输出
· DewLineTM 技术大大减少水汽对测试的干扰
· 以RS-232输出时间、日期、臭氧浓度、仪器内温度、气压及另外3组补充输入信号，例如外置温度、湿度及气压
应用：
· 大气臭氧监测
· 城市大气监测网络
· 小型遥控监测网络
· 工业进程臭氧监测
· 个人及工作环境臭氧监测
技术参数：
Measurement Principle | UV Absorption at 254 nm; Dual Beam |
Federal Equivalent Method (FEM) | Yes, EQOA-0410-190 |
Linear Dynamic Range | 0 to 250 ppm |
Resolution | 0.1 ppb |
Precision (1σ; rms noise) | Greater of 1.0 ppb or 2% of reading for 10-s average |
Accuracy | Greater of 1.0 ppb or 2% of reading |
Limit of Detection (2σ) | 2.0 ppb for 10-s average |
NIST-Traceable Calibration | Yes |
Measurement Interval | 2 s (Data averaging options: 10 s, 1 min, 5 min, 1 hr) |
Flow Rate (nominal) | ~1.8 Liter/min |
Flow Rate Requirement | >1.2 L/min |
baseline Drift | <1 ppb/day; <3 ppb/year |
Sensitivity Drift | <1%/day; <3%/year |
Measurement Time, Frequency | 2 s, 0.5 Hz |
Response Time, * of Step Change | 4 s, 2 points |
Measurement and Averaging Times | 2 s, 10 s, 1 min, 5 min, 1 hr |
Internal Data Storage | 16,383 lines (10 s avg. = 1.9 days; 5 min avg = 1.9 mo.) |
Ozone Units | ppb, pphm, ppm, µg m-3, mg m-3 |
Pressure Units | mbar, torr |
Temperature Units | °C, K |
T and P Corrected | Yes |
Operating Temperature Range | 0 to 50 °C; -20 to 50 °C with low temperature modifications (rotary vane pump and lamp heater) |