Product Description:

YJJ PMS9103M Laser Scattering Type Particulate Matter Sensor Used For Monitoring Concentration Particulate Matter Air

Features:

PMS9103M is a digital general-purpose particulate matter sensor based on the principle of laser scattering. It can continuously collect and calculate the number of suspended particulate matter of different diameters in the air per unit volume, and convert it into mass concentration, which is then output through a digital interface.

The following is the detailed description of its main parameters:

Technical Specifications

‌Particulate Matter Measurement Range‌: Supports three particle size channels: 0.3 - 1.0 μm, 1.0 - 2.5 μm, and 2.5 - 10 μm.

Particle count efficiency: 50% at a particle size of 0.3 μm, and ≥ 98% at a particle size of ≥ 0.5 μm.

Effective measurement range of particulate matter mass concentration: 0 - 500 micrograms per cubic meter (PM2.5 standard value).

Maximum range of particulate matter mass concentration: ≥ 1000 micrograms per cubic meter (PM2.5 standard value). Values exceeding 1000 μg/m³ should be based on actual measurements.

Resolution: 1 microgram per cubic meter (μg/m³).

Consistency: Within the range of 100 to 500 μg/m³, it is ±10% (PM2.5 standard value); within the range of 0 to 100 μg/m³, it is ±10 μg/m³.

Sampling volume: 0.1 liters (L).

Response time: Single response time < 1 second, total response time ≤ 10 seconds.

Power supply requirements: DC voltage: Typical value: 5.0V, Minimum value: 4.5V, Maximum value: 5.5V; Working current: ≤ 100 mA, Standby current: ≤ 2 mA.

Data interface level: TTL level, 3.3V logic (low level < 0.8V, high level > 2.7V).

Working environment: Temperature range -10 to +60℃, humidity range 0 to 95% (no condensation).

Storage environment: Temperature range -40 to +85 degrees Celsius.

Reliability: Mean Time Between Failures (MTBF) is ≥ 5 years.

Size: Maximum 48 × 40 × 12 millimeters (mm).

Interface Definition

The PMS9103M uses an 8-pin interface. The pin definitions are as follows:

PIN1 (VCC): Positive power supply (+5V)

PIN2 (GND): Negative power supply

PIN3 (SET): Setting pin, TTL level @ 3.3V, high level or open circuit is normal operation state, low level is sleep state

PIN4 (RXD): Serial port receiving pin, TTL level @ 3.3V

PIN5 (TXD): Serial port transmitting pin, TTL level @ 3.3V

PIN6 (RESET): Module reset signal, TTL level @ 3.3V, low level resets

PIN7, PIN8: NC (No Connection) Notes for Attention

The sensor requires 5V power supply, but the communication and control pins need 3.3V level. If a 5V-powered MCU is connected, a level conversion circuit needs to be added.

The SET and RESET pins have internal pull-up resistors and can be left floating when not in use.

When using the sleep function, the fan needs at least 30 seconds of stable time to restart. It is recommended that the working time after waking up from sleep be no less than 30 seconds to ensure data accuracy.

Specifications: