Philips AC4550/50 - Инструкция по эксплуатации - Страница 10

8

EN

4  Using the 

appliance

Understanding the air 

quality light

Air quality light 

color

Air quality level

Blue

Good

Blue-purple

Fair

Purple-red

Poor

Red

Very poor

The air quality light automatically 
goes on when the air purifier is 
switched on, and lights up all colors 
in sequence. After approximately 
30 seconds, the air quality sensors 
select the color that corresponds 
to the surrounding air quality of 
airborne particles.
The color of the air quality light is 
determined by the highest level 
among PM2.5, Gas and IAI readings.

PM2.5

AeraSense

 sensing technology 

accurately detects and quickly 
responds to even the slightest 
particle change in the air. It provides 
you with reassurance with real-time 
PM2.5 feedback.

Most of the indoor air pollutants 
fall under PM2.5 – which refers to 
airborne particle pollutants smaller 
than 2.5 micrometers. Common 
indoor sources of fine particles are 
tobacco smoke, cooking, burning 
candles. Some airborne bacteria 
and the smallest mold spores, pet 
allergen and dust mite allergen 
particles also fall under PM2.5.

PM2.5 level

Air quality light 

color

≤

12

Blue

13-35

Blue-purple

36-55

Purple-red

>55

Red

GAS

With an advanced gas sensor, a 
display ranging from L1 to L4 shows 
the level change of potential harmful 
gases (incl. VOC, odor, etc.) detected. 
L1 indicates best air quality.

Gas level

Air quality light 

color

L1

Blue

L2

Blue-purple

L3

Purple-red

L4

Red

IAI

The professional-grade 

AeraSense

sensor detects the level of indoor 
air allergen and with numerical 
feedback from 1 to 12 the potential 
risk level of indoor air allergens can 
be displayed. 1 indicates best air 
quality.