1405-D TEOM Continuous Dichotomous Ambient Particulate Monitor


Two particulate matter parameters simultaneously: PM2.5, PM10 or PM coarse 


Simultaneously measure PM Fine (PM-2.5), PM Coarse, and PM-10 mass concentrations with the Thermo Scientific™ TEOM™ 1405-D Continuous Ambient Particulate Monitor. This monitor utilizes a tapered element oscillating microbalance (TEOM) for measurements with excellent short-term precision.Consisting of a TEOM mass sensor and control unit in a network ready configuration, the TEOM 1405-D distinguishes itself from other PM measurement methods by utilizing a direct mass measurement that is not subject to measurement uncertainties found in other surrogate technologies. It provides a self-referencing, NIST traceable direct mass measurement.


  • A unique virtual impactor for dichotomous operation
  • Real time measurement of three particle sizes
  • Touch screen user interface
  • Embedded FTP server, ethernet, USB, RS-232 and RS485 communications
  • Activol flow control
  • TEOM sensor and control unit housed in a single compact enclosure

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