Promo® 2000 — Aerosol Spectrometer for Process Monitoring

Promo® 2000 | Light-scattering spectrometer system

DescriptionPromo 2000

The new Promo® 2000 is a flexible, powerful and economical light-scattering aerosol spectrometer system particularly suitable for control and monitoring applications. The instrument determines the particle concentration and the particle size precisely and reliably. Using the same scattering measurement methodology as the well known and internationally proven welas® system, the new instruments use two innovations to improve the system performance.

Fibre-optic cables (light wave conductor or LWC) are used to carry the light to the remote sensor from the main controller. This allows welas® sensors with measurement volumes of varying sizes and hence allowing different detection limits, to be easily attached to the Promo® 2000 and 3000 and exchanged at will. This sensor range makes reliable measurements possible over the concentration range from < 1 Particle/cm3 to 106 Particles/cm3. The use of remote sensors, only connected by LWCs, also has the benefit that power is not required in the sampling area, which can be located upto 50m away from the controller. The standard instrument is supplied with a 2 x 3m LWCs.

In addition, fast digital signal processing is now added in the new instrument. This allows improved coincidence detection for each particle passing through the measurement volume.

A touch screen display ensures user-friendly operation. Measurements can be started easily, and all data, such as the current number distribution and the number concentration, as well as 24 further statistical values, can be evaluated and displayed in real time.

Promo® can be operated as a stand-alone measurement device for continuous measurement. All incoming data can be stored with a max. temporal resolution of 1 second so the instrument can autonomously measure for weeks and store the generated data. For data transfer, Promo can also be integrated into a company network and as an option, a printer can be connected as data recorder.

The best classification accuracy and the best size resolution of aerosol particle sizes are guaranteed by the following characteristics

  • White light and 90° scattered light detection: Clear calibration curve
  • Patented T-aperture: No border zone error
  • New digital individual signal processing: Coincidence detection and correction of individual signals making it possible to measure up to a factor of 5 above the max. concentration limit of each sensor.

Optionally, the sensors are also available for measurements in overpressure (up to 10 bar) and at high temperatures (up to 250°C or higher).

Promo® has a standard interface and can be controlled by a process control system or by a laboratory control program, for example, NI LabVIEW.

Technical parameters

  • Measurement range: 0.2 µm – 105 µm
    • Cn ≤ 106 Particles/cm3
  • Environmental conditions:
    • -90°C ≤ T ≤ 70°C
    • Optional: T ≤ 250°C, p ≤ 10 bar
  • Suction flow rate: 5 l/min
  • Digital individual signal acquisition: 20 MHz prozessor, 256 raw data channels
  • Light source: 35W Xenon lamp
  • Interface: USB, Ethernet, RS232/485
  • Operator Interface: 7” Touch Screen Display 800 x 480 pixel
  • Processor: 1.6 GHz Intel Atom™ with 2 GB Compact Flash
  • Power supply: 115/230V ; 50/60 Hz
  • Case: Desktop case (19“ compatible, 4 RU, 84 HP, D = 435 mm), optional with mounting brackets for rack installation

Application examples

  • Plant emission monitoring
  • Control of grinding and screening processes
  • Monitoring of production processes in the food, pharmaceutical and chemical industries
  • Test of complete filters, inertial separators and wet scrubbers
  • Electrostatic precipitators

Particular advantages of the Promo system

  • Largest measurement range from 0.2 µm to 105 µm (4 selectable measurement ranges)
  • Calibration curves for various refraction indices
  • Greatest concentration range from <1 Particle/cm3 to 106 Particles/cm3
  • Extremely high and repeatable counting efficiency from min. 0.2 µm
  • High sampling rate (temporal resolution of up to 10 milliseconds)
  • Fibre-optic technology
    • Measurement in explosive environments
    • Measurement at low temperatures
    • Measurement at upto 50m from the controller
  • User-freindly operation with large touch screen display and integrated webserver
  • Reduction of operating expenses
    • User-friendly operation
    • Long service life of the light source of 2000 h
    • Calibration, cleaning and lamp replacement can all be performed independently by the customer
    • Low maintenance
    • Reliable operation

Please contact us for more detailed information.