Particle Sensor Unit PPD71
Feature:
- Redesigning sensor structure achives the smallest sensor ever.
- Digital output by UART communication offers you designing software easily.
- New optical design and MCU provide better accuracy and fine particle sensing.
- Using custom-made key optical parts achieves long operating life time with high reliability.
Specification:
|
Model |
PPD71 |
|
Dimension |
30(W) × 30(H) × 28(D) [mm] |
|
Supply voltage |
DC5V±10% |
|
Detectable size |
Over 0.5μm(approx.) |
|
Detection range |
0 to 500μg/m³ |
|
Light source |
LED |
|
Output method |
UART |
|
Ripple |
No limitation |
|
Operating temp. & humidity |
-10 to 60?, below 95%rh |
|
Storage temp & humidity |
-25 to 70?, below 95%rh |
|
Initial stabilization time |
60 seconds after power is supplied. |
|
Light Souse Life time |
7 years |
|
Power consumption |
Below 100mA |
|
Detection method |
Auto-suction by a built-in heater resistor. |
|
Maintenance |
Possible |
|
Weight |
11g (approx.) |
|
Application |
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.
