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welas® digital 1000 P

With automatic regulation of sampling volume flow by the aerosol sensors welas® under overpressure up to 10 bar

    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
    Extensive PDControl and FTControl software
    Strong, powerful external suction pump ASP 1000
    Calibration, cleaning and lamp replacement can all be performed independently by the customer
    Simple operation
    Low maintenance
    Reliable function
    Reduces your operating expenses

Description

Depending on the composition of the aerosol to be measured, i.e. the carrier gas component and the particle material, pressure 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 P and welas® 1200 P are equipped with a pressure-tight cuvette 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, it is advantageous for the user if automatic volume flow regulation for the sampling volume flow is provided for in the device.

In the welas® 1000 P the pressure of the carrier gas is measured and the required operating volume flow is automatically set to 5 l/min.

Includes:
    Mass flow controller for volume flow regulation
    Absolute pressure capsule
    Filter unit

Datasheet

Interfaces

USB

Measurement range (size)

0.2 – 10 µm,
0.3 – 17 µm,
0.6 – 40 µm

Size channels

up to 64/decade

Measuring principle

Optical light-scattering

Measurement range (number CN)

< 5 • 105 particles/cm3

Time resolution

≥ 10 ms

Thermodynamic conditions

10 – 40 °C, ≤ 10 bar

Volume flow

5 l/min, 1.6 l/min regulated by mass flow

Data acquisition

20 MHz processor, 256 raw data channels, digital

Light source

Xenon high pressure lamp
75 W

User interface

Laptop

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), approx. 18 kg (sensor)

Software

PDControl, FTControl

Installation conditions

+5 – +40 °C (control unit)

Benefits

    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
    Extensive PDControl and FTControl software
    Strong, powerful external suction pump ASP 1000
    Calibration, cleaning and lamp replacement can all be performed independently by the customer
    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