Detailed information of PM2.5 PM2.5 detector:

Specification

Test particle size: 0.3μm、 two point fiveμm

Light source: laser diode

Flow rate: 500ml

Sampling time: 60 seconds

Testing method: concentration (per liter)

Power supply: Li ion battery (7.4V/1000mAh)

Or AC/DC adapter (AC input: 100-240V, 50/60Hz)

DCOutput: 9V, 1.5A)

Battery working time: Continuous testing time is about 3 hours

Dimensions: 105 (W)×208（H）×44（D）mm

Weight: Approximately 550 g (including battery)

Environmental conditions: Working environment: 5-45℃,<90% RH storage environment:–20～50℃,＜

90%RH

Standard attachments: AC/DC adapter, portable protective box

reminder:

100Particles below micrometers are total suspended particles (TSP) in the air

10Particles below micrometers are inhalable human particulate matter (PM10)

2.5Particles below micrometers are considered as pulmonary particulate matter (PM2.5)

Single filtration rate: refers to the determination of the filtration capacity of a filter by comparing the changes in the number of air particles during a single process from the intake of air to the discharge of fresh air.

When using this instrument to measure the purification efficiency of an air purifier, it is necessary to prepare a newer purifier and let the machine run for more than 20 minutes. It is usually used for less than 3 months. If the machine has been in use for a long time and needs to be replaced with a new HEPA filter, the effect will be significant.

When testing the air outlet of the purifier, the probe of this instrument should be inserted into the bottom of the louver plate behind the purifier and close to the middle position. Try to find more purifiers from other brands on the market for comparison and demonstration.

You can compare the concentration of dirt particles before and after using the same room purifier, and also compare the particle concentration values of the purifier's air outlet and the air conditioner's air outlet.

The values measured by this instrument are only two specifications of particulate matter concentrations, 0.3 microns and 2.5 microns, with units of * * particles per liter. The national standard for PM2.5 is a 24-hour average of 0.075 milligrams per cubic meter and an annual average of 0.035 milligrams per cubic meter. The two units are different. If the result measured by this instrument exceeds 80000 for 0.3 microns and 250 for 2.5 microns, it indicates that the air quality index is not qualified.

Before using the instrument, be sure to remove the upper rubber cap and put it back on after use to protect the sensor probe. This instrument is a precision instrument, please place the instrument in the correct position in the bag (with the probe facing the corresponding groove), and try to avoid lending the instrument to others!