臭氧在紫外（254nm）有强的吸收，可以通过紫外的吸收来测量空气中臭氧。通过***灯的紫外照射样品室。臭氧浓度不同，光被吸收的值也不同。臭氧浓度遵守 Lambert-Beer's 定律.
I = I0 exp(-eLC)
I : Absorped light intensity (measure)
I0 : Unabsorbed light intensity (blank)
e : Molecular absorption coefficiency
L : Light pass lenght
C : Ozone concentration
特征:
大LCD触摸屏，操作简单（可选彩色触摸屏）
样品切换方式增加零点的稳定性.
简易的流程表盘使维护简单
宽范围
计算机控制，操作简便.
零点和斜率标定简易
和PC通讯方便
| Specificati***: | |
| Measuring object | O3 in ambient air |
| Principle | UV absorption method |
| Measuring range | 0-0.1/0.2/0.5/1 ppm |
| Sampling flow rate | About 2L/min. |
| Lower detectable limit | 1ppb (measuring range : 0-1ppm) |
| Zero drift | Within &plu***n;1ppb/day (measuring range : 0-1ppm) |
| Span drift | Within &plu***n;2% of span gas conc./day |
| Repeatability | Within &plu***n;1 % of span gas conc. |
| Linearity | Within &plu***n;2 % |
| Interference | Less than 4ppb (against Toluen 1ppm) Less than 4ppb (25ûC, 80%RH H20) |
| Resp***e time | Within 2 minute (T90) |
| Items displayed | Measuring value, message etc. |
| Operation temperature | 0 to 40 ûC |
| Operation humidity | 0 to 90 %RH |
| Output for recorder | Serial (Standard) or analog |
| (In-output for Telemeter : Option) | |
| Digital interface | RS-232C, Ethernet |
| Power requirement | 100VAC (Standard) 50/60 Hz |
| Power c***umption | Max. 300 VA |
| Dimensi*** | 430W x 220H x 400D (mm) |
| Weight | Approx. 13 kg (without pump) |