The SG35 Advanced Particle Sensor incorporates the PMS7003 particle detector, which uses laser scattering to measure particles with a diameter as small as 1nm:
- nm, or nanometer, is an SI measure of distance: one billionth of a metre.
- A very, very fine piece of sand will be about 125,000nm whilst particles in the spray from a deodorant can are around 5000nm.
- The primary particles of dust are typically around 10nm.
This heavy-duty sensor also incorporates a fan, which generates a flow of air into the measuring chambers. This helps to sample an area around the sensor whilst ensuring the sensor is responsive to changes in the environment.
The SG35 is a universal particle concentration sensor that measures the volume of suspended particles in the air. It is capable of measuring particles of 3 different mean diameters:
- Measuring air-quality.
- Identifying sources of polluting air.