For a complete list of all the Air Quality Sensors test on the World Air Quality Index project, check our sensor overview page.
The PMS 3003 Sensor
The PMS 3003 Sensor is the third generation evolution of the PMS1003 developped by plantower (chinese name: 攀藤 (pānténg).
Specifications
This is the specification for the PMS3003. One should not consider all those values for granted as there is quite often a big difference between what is said to be possible and what is actually possible (and this is why we are setting up all our experiments).
Parameters :Index (Unit )
Measuring range :0.3 to 1.0 ; 1.0 to 2.5 ; 2.5 to 10 (mm)
Counting efficiency :50%@0.3um 98% @> = 0.5 um
Response time :≤ 10 sec
DC supply voltage :5 V
Operating current :120 mA
Standby Current :≤ 200 µA
Data interface level :L <0.8 @ 3.3 H> 2.7@3.3 V
Operating temperature range :-20 ~ + 50 °C
Operating humidity range :0 to 99%
MTBF :≥ 3 Year
Size :65 × 42 × 23 mm
Inside look at the sensor
Compared to the PMS1003, the PMS3003 is just a mechanical size reduction - the electronic is the same. In the former mechanisms, there used to be a mechanical air chamber, which is now removed a replaced by a simple hole over the diode. This is probably because their attempt to imitate Dylos' pressure drop patent proved to be inefficient in the first generation.
The electronic components are the same, at least for the main CPU, a Cypress CY8C4245. That's a bit disapointing since a higher frequency CPU/ADC could help for the advanced processing so much needed for better understand the air quality. Hopefully this is something we will find in the 7th generation sensor, which is comming quite soon. Stay tunned!
Playing arround with this sensor is quite simple as it exports a serial interface. The pin-out in the following:
