Thermo TEOM 1405-DF PM Monitor

1405-F TEOM™ continuous fine dust mass meter for PM2.5, PM-Coarse and PM10


The TEOM 1405-DF simultaneously measures PM-Fine (PM2.5), PM-Coarse and PM10 mass concentrations. The instrument consists of two Filter Dynamics Measurement Systems (FDMS) and two TEOM mass sensors in one housing. It is network configured and equipped with a control system with a touch screen user interface. The TEOM 1405-DF differs from other PM measurement methods in that it uses the principle of direct mass measurement, which is not subject to the measurement fluctuations of older measurement techniques. It provides a self-referencing, NIST-traceable true mass measurement.

Main features:

The TEOM 1405-DF Ambient Particulate Monitor with PM10 and PM2.5 pre-separator is QAL1 DIN EN 15267 certified. (Link to certificate)

Touch screen user interface provides quick and intuitive access to system status, TEOM data, settings and instrument status

TEOM 1405 DF Display

A maintenance window provides access to software wizards that guide the user through the steps required for calibration and maintenance with detailed instructions

ePort software for local or remote communication, USB port for automated download; system configuration includes PM10 and PM2.5

Average values of mass concentration in real time: running average over 1 h, updated every 6 min Long-term average value: 1, 8, 24 h

Sample filter: Pallflex TX40

FDMS filter: Pallflex TX40 diameter 47 mm; FRM-like filter cassette held at 4 °C; suitable for collection and archiving
Time-integrated PM samples for subsequent laboratory analysis

Recommended for:


    Air quality monitoring networks such as background sites
    Special studies and supersites
    Routine signal for fine dust, PM10, PM2.5, air quality index
    remediation projects
    Indoor air, exposure chamber and workplace hygiene measurements
    In and around industrial and material treatment plants