Abstract: An air quality measurement device includes a housing configured to rest on a shoulder of a user. The housing includes an air inlet directed to a breathing zone of the user, and an air outlet. An air quality sensor and an air pump within the housing is connected in-line between the air inlet and the air outlet. A calibration system for an air quality measurement device includes a gas sensor, a particulate matter sensor, and calibration elements: a particulate matter zeroing element configured to calibrate the particulate matter sensor, a gas sensor zeroing element to calibrate the zero response of the gas sensor(s), and a gas sensor known concentration element to calibrate the concentration response of the gas sensor(s).

Abstract: An air quality measurement device includes a housing configured to rest on a shoulder of a user. The housing includes an air inlet directed to a breathing zone of the user, and an air outlet. An air quality sensor and an air pump within the housing is connected in-line between the air inlet and the air outlet. A calibration system for an air quality measurement device includes a gas sensor, a particulate matter sensor, and calibration elements: a particulate matter zeroing element configured to calibrate the particulate matter sensor, a gas sensor zeroing element to calibrate the zero response of the gas sensor(s), and a gas sensor known concentration element to calibrate the concentration response of the gas sensor(s).