Janice Bennett-Livingston Mar 4, 2019 HI Eli, We have a white paper that lays out in detail how to calculate sensor density according to the cubic meters you are measuring. Please find the PDF here: https://www.vaisala.com/sites/default/files/documents/CEN-LSC-AMER-5-Rules-of-Sensor-Placement-B211369EN-A.pdf If you have questions, please feel free to email our Senior Regulatory Expert Paul Daniel: [email protected] Reply