The Thermo Scientific DataRAM 4™ continuously monitors and logs the real-time concentration and median particle size of airborne dust, smoke, mist and fumes. In addition, air
temperature and humidity are displayed and recorded. With appropriate particle discriminators, it provides measurements
correlated with PM10, PM2.5, PM1.0, and respirable fractions. Its patented two-wavelength particle detection system provides the volume median particle diameter of the sampled aerosol, over a concentration range up to 400 mg/m3. Unlike typical particle counting devices, the Thermo Scientific DataRAM 4™ is totally immune to particle coincidence errors, even at the highest concentrations.