SM-PWM-01A

® SMART Dust Sensor SM-PWM-01A SM-PWM-01A is a dust sensor that detects the dust particle concentration in air by using optical sensing method. An infrared light emitting diode (IR LED) and a photo-sensor are optically arranged in the device. The photo-sensor detects the reflected IR LED light by dust particles in air. The SMART Dust Sensor can detect the small particles like cigarette smoke and it can distinguish small particles like smoke from large house dust by pulse pattern of signal output. Applications Features • Detection for dust in the air, Indoor Air quality monitoring • Compact size, light weight (about W59x H46x D18 mm, 23g) • Air cleaner, Air purifier, Air conditioner • PWM (pulse width modulation) output (Low pulse output) • Outdoor dust monitoring with the IAQ monitor special mechanical design for customer • Smoke type Fire alarm application by different sensor adjustments (customer option) • Able to distinguish small particles of cigarette smoke from large particles of house dust • The Low pulse width is proportion to particle size and concentration • Constant forced air convection flow by heater resister in dust sensor • Lead free and ROHS directive compliant • Minimum particle size can be detected over 1µm Amphenol Advanced Sensors (House dust size: avg 20µm, yellow dust size: avg 20um, cigarette dust size: avg 1µm) SMART Dust Sensor Specifications Electrical Characteristic Internal Schematic Absolute Maximum Ratings Parameter Symbol Rating Unit Dust, Cigarette Smoke GND Supply voltage Vcc -0.3 to + 7.0 V Operating temperature Topr -10 to 60 °C Signal Output (P1) Storage temperature Tstg -30 to 80 °C Signal Output (P2) Vcc (+5 V) No Connection Operating Supply Voltage and Signal Output (Ta=25 °C) Parameter Symbol Rating Supply voltage Vcc DC 5 ± 5%, Ripple 4.5V, Lo :