Measurement

Device or Sensor

Data Observations

Units of

Measurement

Particle Count

PMS, Particle Counter

Raw particle count mode of sensor. Helps determine aerosol dispersion and effectiveness of mitigations during a test^a

Particle counts per sample rate

Particle Concentration

PMS, Particle Counter

Concentration mode of the sensor. Used for general air quality monitoring^a

Count per ft3 or L, PM2.5, PM10

Airflow

Anemometer

Air velocity, temperature. Used to characterize the speed and directionality of airflow at various locations^b

m/s, FPM, ˚C, ˚F

Differential Pressure

Manometer

Compares the pressure between two sampling locations for HVAC balancing or healthcare negative pressure isolation rooms^c

Psi, mbar, or mmH₂O

Regional Air Quality

Weather/IAQ smartphone app

Gives region air quality data, pollen, and other pollutants

PM2.5, PM10, O₃, NO₂, SO₂, CO