| Gas detected | NO<sub>2</sub> | 
                                                                            
                                            | Detection principle | Electrochemistry | 
                                                                            
                                            | Sampling method | Pumping suction, flow rate can up to 1L/min, ten grades of pumping suction for selection. | 
                                                                            
                                            | Measure range | 0 to1000 ppm | 
                                                                            
                                            | Resolution | 1 ppm | 
                                                                            
                                            | Precision | 2 % fs | 
                                                                            
                                            | Signal output | High-speed data transmission by USB, available for data downloading and printing | 
                                                                            
                                            | Response time | ≤ 10 s | 
                                                                            
                                            | Repeatability | ≤ ± 1 % | 
                                                                            
                                            | Zero shift | ≤ ± 1 % (fs/year) | 
                                                                            
                                            | Operating language | English | 
                                                                            
                                            | Temperature | -20° C to 50 °C | 
                                                                            
                                            | Explosion-proof | Exib ll CT4 | 
                                                                            
                                            | Alarm mode | Sound, light, vibration | 
                                                                            
                                            | Recovery time | ≤ 10 s | 
                                                                            
                                            | Linearity error | ≤ ± 1 % | 
                                                                            
                                            | Display | LCD dot matrix display | 
                                                                            
                                            | Gas unit | Units are switchable | 
                                                                            
                                            | Humidity | 0 to 95 % RH | 
                                                                            
                                            | Degree of protection | IP66 | 
                                                                            
                                            | Operating time | 100 h (pump off) | 
                                                                            
                                            | Dimension | 205 × 75 × 32 mm | 
                                                                            
                                            | Weight | 300 g | 
                                                                    
                            
                         
                                            
                            
                                                                        -  Monitor the NO2 gas concentration in environment
 
-  Built in micro sampling pump and 10 grades of suction are available
 
-  High speed data transmission by USB, which can download and print data
 
-  Equipped by self-calibration and zero calibration function, makes the detection more accurate and reliable
 
-  Feature by aluminium suitcase and charging adapter
 
-  Two stages alarm with sound and light, alarm point is settable
 
-  The gas concentration unit ppm and mg/m3 can be shifted quickly
 
-  Rechargeable lithium polymer battery of large capacity
 
-  LCD dot matrix display, the gas type, unit, concentration
 
-  Employing pumping sampling method and the pumping suction is adjustable
 
                                            
                            Portable NO2Gas Detector is used in petrochemical and chemical industry, agriculture environment protection, electronic, food, pharmaceutical industry, bio-pharmaceutical plant, green household and fermentation process.