ATEK Particulate Matter Sensor

Specifications

• Particle Size Range: Measures PM1.0, PM2.5, PM4.0 and PM10.

• The ATEK particle sensor is capable of measuring the numerical concentration of particles in ambient air.

• The results are given in number of particles per cm³ (particles/cm³) for the detected particle sizes.

2. Measurement Range:

• 0 to 3,000 #/cm³

• Accuracy:

  1. For PM0.5, PM1, and PM2.5:

     1. 0 to 1,000 #/cm³: ±100 #/cm³

     2. 1,000 to 3,000 #/cm³: ±10% of the measured value (m.v.)

  2. For PM4 and PM10:

     1. 0 to 1,000 #/cm³: ±250 #/cm³

     2. 1,000 to 3,000 #/cm³: ±25% of the measured value (m.v.)

• Long-Term Maximum Drift of Numerical Concentration Accuracy:

• For 0 to 1,000 #/cm³: ±12.5 #/cm³ per year

For 1,000 to 3,000 #/cm³: ±1.25% of the measured value (m.v.) per year

• Sensitivity: Detects particles as small as 0.3 µm.

• Measured Particle Sizes:

  1. PM0.5 0.3 to 0.5 μm

  2. PM1.0 0.3 to 1.0 μm

  3. PM2.5 0.3 to 2.5 μm

  4. PM4 0.3 to 4.0 μm

  5. PM10 0.3 to 10.0 μm

4. Environmental Tolerances:

• Operating Conditions:

  • Temperature: -10°C to +60°C.

  • Humidity: 0% to 95% RH (without condensation).

• Storage Conditions:

  • Temperature: -40°C to +70°C.

  • Humidity: <95% RH.

5. Conversion to particles/m³:

To comply with standards like ISO 14644-1, the concentration in particles/cm³ can be converted to particles/m³:

• Concentration in particles/m³ = Concentration in particles/cm³ × 1,000,000

For example, if the sensor indicates 3.1 particles/cm³, that is equivalent to: 3.1 particles/cm³ × 1,000,000 = 3,100,000 particles/m³.

6. Implications:

• This data is essential for evaluating air cleanliness in controlled environments like cleanrooms.

• It can be used to verify if the room complies with the specified limits for ISO classes (such as ISO 7 or ISO 8).

• For ISO 7: The maximum allowed concentration for particles ≥0.5 µm is 352,000 particles/m³. (NC10 < 0.352#/cm³)

• For ISO 8: The maximum allowed concentration for particles ≥0.5 µm is 3,520,000 particles/m³. (NC10 < 3.52#/cm³)