Promo® 1000 HP

With automatic regulation of sampling volume flow by the aerosol sensors welas® under overpressure up to 10 bar or in temperatures to 120 °C


Brief Description
Brief product description in two-pages as PDF
Product Description
Detailed product description as PDF
Promo_1000_freigestellt ohne Rand.jpg

Promo® 1000 HP

With automatic regulation of sampling volume flow by the aerosol sensors welas® under overpressure up to 10 bar or in temperatures to 120 °C


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

For this reason, the welas® aerosol sensors welas® 1100 HP and welas® 1200 HP are equipped with a cuvette heatable up to 120 °C and pressure-tight up to 10 barg to ensure isobaric and isothermal sampling into the sensor's measurement volume.

The welas® digital is usually calibrated for the operating volume flow. As the operating volume flow changes with pressure and temperature, it is advantageous for the user if automatic volume flow regulation for the sampling volume flow is provided for in the device.

In the Promo® 1000 HP the pressure and temperature of the carrier gas are measured and the required operating volume flow is automatically set to 5 l/min.


  • Mass flow controller for volume flow regulation
  • Heating regulator up to 120 °C
  • Temperature sensor
  • Absolute pressure capsule
  • Filter unit


  • Measuring range of 200 nm to 40 µm (3 measuring ranges selectable in one device)
  • Up to three measuring ranges in only one device:
    • 0.2 µm – 10 µm
    • 0.3 µm – 17 µm
    • 0.6 µm – 40 µm
  • Up to 128 size channels per measuring range
  • Concentration range from < 1 particle/cm3 to 5 • 105 particles/cm3
  • Calibration curves for different refractive indices
  • Very high and reproducible counting efficiency rate starting at 0.2 µm
  • High temporal resolution down to 10 ms
  • Analysing software PDAnalyze
  • Calibration, cleaning and lamp replacement can all be performed independently by the customer
  • External control via RS 232 or Ethernet
  • Optional: PDControl software for operation as welas® digital
  • Simple operation
  • Low maintenance
  • Reliable function
  • Reduces your operating expenses


Interfaces USB, Ethernet, RS232/485, Wi-Fi
Measurement range (size)

0.2 – 10 µm,
0.3 – 17 µm,
0.6 – 40 µm
Size channels
up to 128 (64/decade)
Measuring principle Optical light-scattering
Measurement range (number CN) < 5 • 105 particles/cm3
Time resolution
up to 1 s
Thermodynamic conditions
10 – 120 °C, 2 – 10 barg
Volume flow 5 l/min, 1.6 l/min
Data acquisition 20 MHz processor, 256 raw data channels, digital
Light source

Xenon high pressure lamp 75 W
User interface Touch screen, 800 • 480 pixels, 7"
(17.78 cm)
Power supply

115 – 230 V, 50 – 60 Hz
Table housing, optionally with mounting brackets for rack-mounting
Dimensions 185 • 450 • 315 mm (H • W • D) (19")
approx. 8 kg (control unit), 18 kg (sensor)
Operating system

Windows embedded
Data logger storage

4 GB Compact Flash
Software PDControl, FTControl
Installation conditions
+5 – +40 °C (control unit)


  • Abscheidegradbestimmung von KFZ Innenraumfiltern, Motorluftfiltern, Raumluftfiltern, Druckluftfiltern, Staubsaugerfiltern, abreinigbaren Filtern, Elektrofiltern, Ölabscheidern, Kühlschmierstoffabscheidern, Nassabscheidern, Zyklonen und anderen Abscheidern
  • Isotherme und isobare Partikelgrößen- und Mengenbestimmung, z. B. in der Automobil-, Chemie-, Pharma- und Lebensmittelindustrie
  • Untersuchung schneller, instationärer Prozesse
  • Partikelmessung zur Wolkenbildung
  • Emissionsmessungen


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