DSM501A PM2.5 Dust Sensor Module can sense that tobacco smoke and pollen, house dust, such as heating automatic suction device, adjustable resistance is set up to detect the size of the dust. Using the same particle counter principle as the foundation, to detect the absolute number of particles per unit volume.
Dust Sensor Feature:
Can sense tobacco smoke and pollen, house dust and so on
Can measure 1 micron or more of small particles
Small size, lightweight, easy to install
5 V input circuit for signal processing
Built-in airflow generator, you can attract the external atmosphere
Maintenance is simple, can keep the characteristics of the sensor for a long time
Dust Sensor Specification:
Electrical parameters
DSM501 module
Operating voltage range
DC 5V ± 0.5V
Output mode
PWM pulse width modulation
The output voltage
Low level (with particles)
0.7V (max. 1.0V)
High level (clean air)
4.5V (min. 4.0V)
The smallest particle measure capability
1um
Sensitivity
15,000 / 283ml
Operating current (Max)
90mA
Humidity range
Storage environment
0-99% RH
Working environment
0-95% RH
Temperature range
Storage environment
-20 °C to 80 °C
Working environment
-10 °C to 60 °C
Settling time
Approximately 1 minute after the heater is switched on
Dust Sensor Pin Description:
Output pin Vout2: For the general output pin, the sensitivity has been set, the smallest particle measure capability is 1um
Output pin Vout1: For adjustable output pin, the sensitivity can be adjusted by the control pin, the default is 2.5 times of Vout2, that is, the smallest particle measure capacity is 2.5um
Control pin: Between this pin and GND adds a resistor can be adjusted Vout1 minimum particle measure level, adjust the resistance value can be adjusted Vout1 sensitivity.
Resistance
Output pin Vout1 sensitivity
NULL
Default sensitivity (2.5um or more)
100K
Semi-sensitivity (2um or more)
27K
The same as Vout1 sensitive (1um or more)
Application Note:
Heating capacity: Built-in a heater, heat causes rising airflow so that the outside air enters the module inside.
The measure of the particle type: This module is set to measure more than 1um particles, such as cigarettes, house dust, mold, pollen, spores.
Installation:
Must be mounted vertically
Keep away from artificial airflow, such as fans. When used with an air freshener, the front and rear sides of the fan cannot be mounted. Optionally, can be mounted on one side, but the vents should be kept in the housing to ensure that external airflow can flow in.
Attention to avoid the installation of viscous particles, such as oil into the module, otherwise will cause failure.
When the module is affected by moisture will affect its normal function, it should avoid dampness.
Lenses: Lenses need to be cleaned at intervals of about 6 months depending on environmental conditions. Wipe clean with a cotton swab dipped in water and then wipe dry. Do not use alcohol and other organic solvents to wipe.
Package Included:
1 x DSM501A PM2.5 Dust Sensor 5V Air Measurement
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