Building management system with particulate sensing

An integrated sampling system of an air handling unit of a building, the integrated sampling system comprising:

• piping coupled to at least one of ducting or one or more air dampers and configured to collect a plurality of air stream samples;
• a switching manifold coupled to the piping and configured to selectively provide an air stream sample of the plurality of air stream samples from one or more pipes of the piping to one or more integrated sensors;
• the one or more sensors configured to measure a second particle disturbance of an outdoor air stream and a third particle disturbance of an indoor air stream;
• and
• a processing circuit configured to compare the second particle disturbance with at least one of the first particle disturbance or the third particle disturbance.

A computer-implemented method for particulate sensing of a building, the computer-implemented method comprising:

• sampling and measuring, by an air handling unit, a first zone for a first particle disturbance of the first zone;
• collecting, by the air handling unit from piping, a plurality of air stream samples;
• selectively providing, by the air handling unit using an integrated sampling system, an air stream sample of the plurality of air stream samples from one or more pipes of the piping to one or more integrated sensors;
• measuring, by the air handling unit using the integrated sampling system, a second particle disturbance of an outdoor air stream and a third particle disturbance of an indoor air stream;
• and
• controlling, by the air handling unit, operation of the air handling unit, responsive to comparing the second particle disturbance with at least one of the first particle disturbance or and the third particle disturbance.