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Instruments > Earth Remote Sensing Instruments > Passive Remote Sensing > Photon/Optical Detectors > OPC

Preferred term

OPC  

Definition

  • Optical particle counters (OPCs), photometers, Aerodynamic Particle Sizer (APS) spectrometers, and condensation particle counters (CPCs) all measure airborne particles in real time. Each technology has a unique sensitivity to specific particle characteristics such as size, mass and refractive index. Table 1 summarizes the basic performance differences. Note in particular the size range and flow rate for each instrument as well as the upper limit of the number concentrations. Table 2 summarizes typical applications for each measurement technology. (en)

Broader concept

Change note

  • 2021-09-07 16:12:11.0 [sritz] insert Definition (id: null text: Optical particle counters (OPCs), photometers, Aerodynamic Particle Sizer (APS™) spectrometers, and condensation particle counters (CPCs) all measure airborne particles in real time. Each technology has a unique sensitivity to specific particle characteristics such as size, mass and refractive index. Table 1 summarizes the basic performance differences. Note in particular the size range and flow rate for each instrument as well as the upper limit of the number concentrations. Table 2 summarizes typical applications for each measurement technology. language code: en);
  • 2021-09-07 16:12:40.0 [sritz] update Definition (Optical particle counters (OPCs), photometers, Aerodynamic Particle Sizer (APS) spectrometers, and condensation particle counters (CPCs) all measure airborne particles in real time. Each technology has a unique sensitivity to specific particle characteristics such as size, mass and refractive index. Table 1 summarizes the basic performance differences. Note in particular the size range and flow rate for each instrument as well as the upper limit of the number concentrations. Table 2 summarizes typical applications for each measurement technology.);

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https://gcmd.earthdata.nasa.gov/kms/concept/b3771e7c-efaf-4867-8380-1d629f2eb66b

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