I. Product Overview WASP-XM-E-NO2 nitrogen dioxide pumped handheld detector is a continuous monitoring of nitrogen dioxide concentration detection equipment. This product is suitable for environmental monitoring, industrial production and other harmful gases in the work environment, can effectively protect the health and safety of workers is not compromised. Second, the main features of a smart sensor design, calibration and maintenance more convenient in the future; failure to warn, operational errors, alarms are smart tips; with an audible alarm, a visual alarm function, the status bar also displays alarm status; full color 3.5-inch TFT screen color LCD and intuitive; and curve simultaneously in digital display of gas concentration in two ways; with USB communication port, 9600 bytes can communicate directly with the computer speed; with a test recording function, can store measurement data a month, and can be instrument or computer to view the data; with alarm recording function, can record the last four times the alarm time and type; with calibration record; can record the last four times the size and span calibration time; high-capacity lithium battery, rechargeable, low battery automatically off; you can set high reported, underreporting, TWA, STEL, shutdown time, pump speed. Third, product technical parameters Detection of gas: nitrogen dioxide (NO2) Detection principle: Electrochemical (Switzerland MEMBRAPOR electrochemical sensors) Sampling forms: pump-priming response time: T90≤30S Accuracy: ± 3% FS Detection range: 0 20 / 500ppm Resolution: 0.1 / 1ppm life: Life: Power supply: Lithium battery (4.2V / 3000mAh) Current: normal current: ≤150mA; Alarm current: ≤200mA Environment: Temperature: -40 ℃ - 70 ℃ Relative Humidity: 15% - 95%, non-condensing Storage Environment: Temperature: -20 ℃ --60 ℃ Relative humidity: ≤90%, non-condensing Housing material: PC Dimensions: 228 * 84 * 50.5 mm Installation: Handheld / Bracket Weight: 0.55 kg four areas of applications related to its use in petrochemical industry, power industry, water treatment industry, the tobacco industry, pharmaceutical industry, food industry, coal, metallurgy, municipal gas, environmental monitoring and other occasions site testing.