New Handheld Portable Particle Counter PM2.5 0.3um 2.5um Unit Pieces/Liter Features * User configurable for all three size channels * Set and display date and time. * Error status indicator: The instrument will automatically monitor the sensor status, out of flow calibration (>+/-5%), or insufficient battery * Timer, auto-start sampling * Average of multiple times of measurements * External digital temperature and humility sensors to assure accurate measurement * No less than 3 hours of continuous operation. Specifications: * * Light Source: Laser diode (more than 100,000 hours MTBF) * Flow Rate: 500ml * Sampling Time:20 seconds * Measurement: Concentration (per liter) * Error Indication: Count limit, loss of laser power, out of flow calibration (>+/-5%), insufficient battery * Power: Li-ion polymer rechargeable battery (7.4V/1020mAH) or AC adapter (AC input: 100 ~ 240V, DC output: 9V/1.5A) * Max. Operating time: continue operation >3 hours with Li-ion polymer battery) * Dimension: 93 (W)x180 (H)x48 (D) mm * Weight: <600 g (battery included) Environmental Condition: Operating: +5- +45 degreeC, <90%RH; Storage: -20- +50 degreeC, <90%RH |