JS901-CH2O formaldehyde detector formaldehyde concentration detector special authentic

JS901-CH2O formaldehyde detector technical parameters: ________________________________________ formaldehyde (CH2O) electrochemical detection principle principle sampling pump-priming, flow rates up to 1L / min, pump suction size ten stalls adjustable range 0-1ppm, 0- 5ppm, 0-10ppm, 0-20ppm, 0-50ppm, 0-100ppm, 0-200ppm, 0-500ppm, 0-1000ppm (range options, are not listed range can be customized) Resolution 0.001ppm (0-1ppm ), 0.01ppm (0-100ppm and below), 0.1ppm (0-200ppm, 0-500ppm), 1ppm (0-1000ppm) accuracy 2% FS signal output USB interface to high-speed data transmission, you can download and print data (optional) Response time ≤10S Recovery time Recovery Time ≤10S Repeatability ≤ ± 1% linearity error Linearity error ≤ ± 1% Zero drift ≤ ± 1% (FS / years) display technology Display LCD dot matrix display technology Operating Language support in English and gas unit Gas unit supports multiple gas unit switching display Operating temperature -40 ℃ ~ 70 ℃ Operating Humidity Humidity 0-95% RH Explosion Proof ExiaⅡCT4 protection Degree of protection IP66 Alarm sound, light, vibration hours Operating time 100 hours (off pump) size 205 * 75 * 32mm Weight Weight 300g JS901-CH2O formaldehyde detector Features: 1, using imported high-precision electrochemical principles sensor 2, USB interface to high-speed data transmission, download and print the data (optional) 3, a liquid crystal lattice display technology, you can display the kind of gas, the gas unit, 4, gas concentration, measured maximum, local time, ambient temperature, etc. 5, support Chinese and English interface, easy to switch 6, a gas concentration unit PPM, mg / m3 can be quickly switch the display 7, built-in mini pump, suction pump size ten stalls adjustable 8, explosion-proof certification, explosion-proof grade: ExiaⅡCT4 JS901-CH2O formaldehyde detector Features: 1, monitoring the environment or confined space Formaldehyde concentration and alarm 2, with a self-check function, zero calibration function, so that gas monitoring more accurate and reliable 3, a key to restore the factory settings function, can be removed from misuse problems 4, with temperature and pressure compensation, can be the perfect realization ambient temperature and pressure at different gas concentrations compensation 5, two sound and light alarm, alarm point can set your own 6, high-capacity lithium polymer rechargeable battery 7, the pump suction sampling pump suction size adjustable 8 housing special high-strength plastic, non-slip, waterproof, dustproof, explosion-proof 9, exquisite high-end aluminum suitcase