| Measured components | SO₂ | NO | NO₂ | O₂ |
| Measuring principle | DOAS | DOAS | DOAS | electrochemistry |
| measurement range | (0~45~750)mg/m³ (0~500~4000)mg/m³ Configurable |
(0~45~750)mg/m³ (0~500~4000)mg/m³ Configurable |
(0~100~600)mg/m³ (0~500~4000)mg/m³ Configurable |
(0~25)% |
| Minimum detection limit | ≤0.5%F.S. | ≤0.5%F.S. | ≤0.5%F.S. | ≤0.5%F.S. |
| indication error | ≤±2%F.S. | ≤±2%F.S. | ≤±2%F.S. | ≤±2%F.S. |
| repetitiveness | ≤2% | ≤2% | ≤2% | ≤2% |
| zero drift | ≤±2%F.S. | ≤±2%F.S. | ≤±2%F.S. | ≤±2%F.S. |
| Range drift | ≤±2%F.S. | ≤±2%F.S. | ≤±2%F.S. | ≤±2%F.S. |
| Response time (T90) | ≤90s | ≤90s | ≤90s | ≤60s |
| ambient temperature | (15~35)℃ | |||
| Work flow range | (1~2)L/min | |||
| Power supply requirements | 220VAC/50Hz 300W | |||
| Dimensions & Weight | (177x440x390)mm(H×W×D),13kg | |||
| Interface characteristics | Communication interface: 1 channel RS485, 1 channel RS232 | |||
| Other interfaces: digital output, digital input, current loop output | ||||
