Aerosol sensor welas® 2070 H

Aerosol sensor pressure-resistant up to 1 bar overpressure and heatable up to 250 °C


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Aerosol sensor welas® 2070 H

Aerosol sensor pressure-resistant up to 1 bar overpressure and heatable up to 250 °C


Depending on the composition of the aerosol to be measured, i.e. the carrier gas component and the particle material, temperature changes in the carrier gas can significantly influence the particle size distribution, e.g. due to condensation or evaporation.

For this reason, the aerosol sensors welas® 2070 H through to welas® 2500 H are equipped with a heatable cuvette to ensure isobaric and isothermal sampling down to the sensor's measurement volume.

Beheizbare und druckfeste welas® Küvette

Figure 1: Heatable welas® cuvette

The cuvettes are made of stainless steel. If the sensor is used in aggressive and corrosive aerosols, the cuvette can be made of stainless steel or other special materials, such as Hastelloy.

Sealed additional disks prevent aerosol from the cuvette from escaping into the surroundings. The additional disks are easy to clean and replace by the operator.


Measurement range (size) 0.2 – 40 µm (3 measurement ranges)
Measurement range (number CN) 0 – 106 particles/cm3
Thermodynamic conditions
≤ 250°C, -100 – +50 mbarg
Volume flow
5 l/min (others on demand)
Light source Xenon arc lamp 35 W
50 • 250 • 100 mm (H • W • D)
approx. 2,8 kg


  • Determination of the separation efficiency of car interior filters, engine air filters, room air filters, compressed air filters, vacuum cleaner filters, cleanable filters, electrostatic precipitators, oil separators, cooling lubricant separators, wet scrubbers, cyclones and other separators
  • Isothermal and isobaric particle size and quantitative determination, for instance in the automobile, chemical, pharmaceutical and food industries
  • Analysis of fast, transient processes
  • Inspection of smoke detectors
  • Particle formation for cloud formation
  • Emission measurements
  • Immission measurements


Brief Description
Brief product description in two-pages as PDF
Product Description
Detailed product description as PDF


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