PPD-42NJ 

Based on the light scattering method, it always detects airborne particles. Pulse output that corresponds to concentration per unit volume of particles can be obtained, with using an original detection method based on light scattered principle similar to the particle counter.

Feature

1. Stable and sensitive detection of not only cigarette smoke but house dust which are indoor asthma triggers.
2. Air is self-aspirated with the current of air generation mechanism with a built-in heater.
3. Easy maintenance. High sensitivity lasts long term.
4. Dual output for the particle size over 1 micron and 2.5 micron (approx).
5. More compact and lighter, and easy installation.

Applications

• Air Purifier
• Air Quality Monitor
• Air Conditioner
• Ventilator

How it works

•  Heater (resistor) generating updraft. Infrared light beam from LED has been focused with Lens to sensing point at the center.
• Airborne particles have been taken into the sensor box with the updraft.
•  Particle passing through sensing point scatters light and receptor receive scattered light through the lens and transformed into pulse signal. Pulse per unit time is proportional to the particle concentration.