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Promo® 1000

Powerful scattered-light aerosol spectrometer system for particle measurement from 120 nm

    Measuring range of 120 nm to 40 µm (4 measuring ranges selectable in one device)
    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
    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 0.12 µm
    High temporal resolution down to 10 ms
    PDAnalyze analysis software
    Calibration, cleaning and lamp replacement can all be performed independently by the customer
    External control by RS 232 or Ethernet
    Optional: Software PDControl for operation as welas® digital available
    Simple operation
    Low maintenance
    Reliable function
    Reduces your operating expenses

Description

Promo® 1000 is a light-scattering aerosol spectrometer system for particle size analysis and concentration determination that can be equipped with all welas® 1100 and 1200 sensors. These sensors allow reliable measurement in the concentration range from < 1 particle/cm3 up to 5 • 105 particles/cm3.

With Promo® 1000 particles sizes above 120 nm can be reliably measured, as the special high power xenon high pressure lamp with very high light intensity and the photomultiplier are directly integrated in the aerosol sensor.

Unique are 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.

Promo® 1000 is famous for up to 128 size channels per measuring range and a concentration range from < 1 particle/cm3 to 5 • 105 particles/cm3.

The best size classification accuracy and the best size resolution are guaranteed by the following special features (see Graph 1):
    White light and 90° light-scattering detection
 Unambiguous calibration curve
    Patented T-aperture
 No border zone error
    New digital individual signal processing
⇒ Coincidence detection and correction of the individual signal making it possible to measure higher concentrations

A touch 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. All incoming data can be stored with a max. temporal resolution of 1 s. For data transfer, Promo® can also be integrated into a company network.

Promo®has a standard interface and can be controlled by a process control system or by a simple Labview program. The Promo® measurement technology:

Promo® has a new, fast 20 MHz signal processing processor, which analyses the progression of each particle signal.

This makes it possible to recognise coincidental events in light scattering measurement technology at the individual signal and correct them (according to Dr. Umhauer / Prof. Dr. Sachweh). This way it is possible to increase the maximum concentration limit up to 5 • 105 particles/cm3.

Furthermore, the new signal detection electronics, which include a new, powerful logarithmic A/D converter, allow particles of 120 nm to be measured with a 50 % counting efficiency.

High classification accuracy, high resolution capability and a high counting efficiency are the prerequisite for unambiguous particle measurement.


Graph 1: Resolution capability and classification accuracy (1200 sensor)

The Promo® is characterized by its very high counting efficiency starting from 0.12 µm!


Graph 2: Counting efficiency with the welas® 1200 sensor

The Promo® 1000 sensors:

The welas®1100 and 1200 aerosol sensors are characterized by the fact that a powerful light source and the photomultiplier are directly integrated in the sensor. This technology offers the best size resolution, the best classification accuracy and a low detection limit.

The size of measurement volume is crucial for coincidence-free particle size and particle number measurement.

With measurements in coincidence, the diameter is measured too large and the number too small. Theoretically, for a coincidence‐free measurement, i.e. maximum one particle in the measuring volume, at a number concentration of 103particles/cm3the measurement volume extension must not be higher than 1 mm3.

Datasheet

Interfaces

USB, Ethernet, RS232/485, Wi-Fi

Measurement range (size)

0,12 µm – 3,5 µm,

0,2 µm – 10 µm,

0,3 µm – 17 µm,

0,6 µm – 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 – 40 °C, -100 – 50 mbar

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

Housing

Table housing, optionally with mounting brackets for rack-mounting

Dimensions

185 • 450 • 315 mm (H • W • D) (19")

Weight

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)

Benefits

    Measuring range of 120 nm to 40 µm (4 measuring ranges selectable in one device)
    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
    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 0.12 µm
    High temporal resolution down to 10 ms
    PDAnalyze analysis software
    Calibration, cleaning and lamp replacement can all be performed independently by the customer
    External control by RS 232 or Ethernet
    Optional: Software PDControl for operation as welas® digital available
    Simple operation
    Low maintenance
    Reliable function
    Reduces your operating expenses

Applications

    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