The Promo^® aerosol spectrometer system was developed for continuous process monitoring and is based on the welas^® digital technology. Besides particle size distribution and particle concentration, up to 36 static distribution parameters are continuously measured with a minimum temporal resolution of 1 s.

Unique is up to four measuring ranges in only one device:

• 0.12 µm – 3.5 µm (additionally in welas^® 1000 and Promo^® 1000)
• 0.2 µm – 10 µm
• 0.3 µm – 17 µm
• 0.6 µm – 40 µm
• 2 µm – 100 µm (additionally for sensors 2300 and 2500).

welas^® digital system and Promo^® system are famous for up to 128 size channels per measuring range and a concentration range from < 1 particle/cm³ to 10⁶ particles/cm³.

Promo^® is a standalone measuring device with an easy-to-operate integrated PC with a touchscreen.

Using various interfaces, such as Modbus, Promo^® can be integrated into process control systems and operated with external software.

Unique in the world: The broad spectrum of easily exchangeable welas^® aerosol sensors enables perfect matching of the measurement technology with the particle spectrum (120 nm to 100 µm) to be measured in particle concentrations of < 1 particle/cm³ up to 10⁶ particles/cm³, also in overpressure up to 10 barg and temperatures of -120 °C to 470 °C.

Calibration can be performed on-site independently by the customer!