Honeywell HPMA115S0 is a PM2.5 dust meter. Free Technical Library News

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Honeywell HPMA115S0 - PM2.5 Dust Meter

29.05.2019

Honeywell has introduced a new HPMA115S0 dust mass meter that measures airborne fine particulate matter as small as 2,5 microns. The HPMA115S0 is designed to be integrated into portable and fixed air quality instruments. The 43mm x 36mm x 24mm 5V 80mA device uses an integrated fan to draw air through an internal chamber where a laser-photodiode pair counts and analyzes dust particles, and an onboard microcontroller translates this information into dust mass concentration. in the air.

Within a single information package, accessible through the UART interface, there is separate information on the concentration of particles smaller than 2,5 microns (PM2.5, smoke particles or bacteria) and particles smaller than 10 microns in diameter (PM10, dust, pollen or mold) .

The sensor has the following technical characteristics:

Operating time 20000 hours, which is equivalent to 7 years of operation at a load of 8 hours a day.
Measurement time 6 seconds.
Measurement range from 0 to 1000 µg/m3.
Accuracy +- 15 µg/m3 in the range from 0 to 100 µg/m3 and +- 15% in the range from 100 to 1000 µg/m3.
Operating temperature range -10 °C to 50 °C.
Electromagnetic compatibility in accordance with the IEC61000 group of standards.

The presence of UART with 3,3 V levels makes it possible to connect to an external microcontroller without signal level conversion. It is possible to transfer the device to low power consumption mode with the built-in fan turned off and the current consumption reduced to 20 mA.

It may also be important for the developer to have a built-in stabilizer on board the device that converts the supply voltage of 5 V into an output voltage of 3,3 V, which can be used to power an external circuit, for example, controls or indications.

The Honeywell HPMA115S0 dust meter can be used with the following devices:

Air conditioners and air purifiers.
Portable air quality meters.
Integrated environment monitors.
Car air purifiers.

The Honeywell HPMA115S0 module is calibration free, RoHS compliant and REACH compliant.

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