1405-DF TEOM Continuous Dichotomous Ambient Air Monitor


Two  particulate matter parameters simultaneously: PM1, PM2.5, PM10 or TSP


Take continuous direct mass measurements of particulates with excellent short-term precision using the Thermo Scientific™ 1405-DF TEOM™ Continuous Dichotomous Ambient Air Monitor. This monitor simultaneously measures PM-10, PM-2.5 and PM-Coarse mass concentration as it exists in the ambient air.This monitor utilizes two tapered element oscillating microbalances (TEOM) and two Filter Dynamics Measurement Systems (FDMS), which account for volatile and nonvolatile PM fractions. It complies with U.S. EPA PM-2.5 , PM-10-2.5,

PM-10 Equivalent Monitor (EQPM-0609-182, EQPM-0822-207, (EQPM-0822-208)


  • Accounts for volatile and non-volatile PM fractions
  • Combines control unit, mass sensor and FDMS into a single integrated unit
  • Embedded FTP server, Ethernet, USB, RS-232 and RS485 communications
  • Activol flow control
  • Real-time Mass Concentration Average: One hour rolling average updated every six minutes
  • Long-Term Averaging: 1, 8, 24 hr.

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