Aerosol Sensor welas® 2500

Aerosolsensor welas® 2100
Aerosol sensor with optical fibre technology for number concentrations up to 4,000 particles/cm3

The model 2500 aerosol sensors are equipped with a very big measurement volume and are used for coincidence-free measurement with a maximum number concentrations up to 4,000 particles/cm3. This aerosol sensor allows statistically reliable measurements in low raw gas concentrations down to clean room class 100,000 and for filter testing according to ASHRAE 52.2. Measuring range: 0.3 – 17 µm / 0.6 – 40 µm / 2 – 105 µm.

Norms and certificates

National and international standards


Operation principle

Your special advantages

  • The sensors are easily replaceable
  • World's smallest and most robust sensors in the 2000 series
  • Very good agreement of all sensors regarding particle size and particle concentration
  • Minimization of particle losses in long sampling lines by easy installation of the sensor directly at the sampling point
  • Sensors for in-situ measurements
  • Measurement in explosive environments in 2000 series (without heating)
  • Easy to clean
  • Simple operation
  • Reliable function
  • Low maintenance
  • Reduces your operating costs

Individual solutions for various industries

  • 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
Do you have any further questions?
Please do not hesitate to contact us.
Technical features

In detail

Measurement range (number C_N)
0 – 4 • 103 particles/cm3
Measurement range (size)
0.3 – 105 µm (3 measurement ranges)
Volume flow
5 l/min (others on demand)
Thermodynamic conditions
+10 – +40 °C, -100 – +50 mbarg
Light source
Xenon arc lamp 35 W
50 • 250 • 100 mm (H • W • D)
Approx. 2.8 kg

More information about Aerosol Sensor welas® 2500

Brief Description

Brief product description in two-pages as PDF

Product Description

Detailed product description as PDF

Shopping cart

Your individual configuration


(Art-No: 453keine) - Aerosol sensor welas® 2500


All prices without VAT. Price verification reserved.

Total price (net)

Contact us


Options suitable for this device

Receive updates on exciting products & valuable news!