| Measuring range | 0-10/100/1000ppm/1%/5%/25%/100% (range optional) |
| Resolution ratio | 0.01PPm/0.1PPm/1PPm/0.01%/0.1% |
| Accuracy of measurement | ≤±2%F.S |
| Repeatability | ≤±1%F.S |
| Stability | Zero drift: ≤±1%F.S/7d Range drift: ≤±1%F.S/7d |
| Response time | T90≤30S |
| Flow of sample gas | 400±50mL/min |
| Working power supply | 100~240VAC 50/60Hz 1A |
| Ambient temperature | -5℃~+45℃ |
| Ambient humidity | ≤90%RH |
| Signal output | 4~20mA or 0~5VDC |
| Cummunication mode | RS232 or RS485 |