KHG 10 D

KHG 10 D dilution system heatable and pressure-resistant up to 10 bar for isothermal and isobaric dilution with a dilution factor of 1:10.

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Brief Description
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Product Description
Detailed product description as PDF
KHG 2010

KHG 10 D

KHG 10 D dilution system heatable and pressure-resistant up to 10 bar for isothermal and isobaric dilution with a dilution factor of 1:10.

Description

The KHG 10 D series heatable dilution system builds upon the VKL series ejector principle. In addition to the advantages of the VKL series, the KHG series dilution system is configured to be heatable to 150°C (optionally up to 200°C) and pressure-resistant up to 10 bar overpressure. This therefore realizes isothermal and isobaric dilution. With the KHG system, both the compressed air supplied and the dilution system are self-heated.

The welas® KHG 10 D series of dilution systems can reduce the concentration of aerosols by the dilution factor 1:10 under isobaric and isothermal conditions, also of very highly concentrated aerosols, in a defined and reliable way.

Dilution factors of up to 1:100,000 are achieved by cascading several KHG 10 D systems.

Function principle of the KHG 10 D:

KHG _principle_eng.jpg

Particle-free air with the volume flow VR circulates through an annular passage around the suction nozzle. Thus, according to Bernoulli, a volume flow VAn is generated at the suction nozzle. The volume flow VR is heated to the required temperature of the aerosol to be measured using cartridge heaters, such that isothermal conditions prevail. The dilution factor VF is calculated according to the following formula

Verdünnungssysteme Formel.JPG

Care has to be taken with the heatable system of the KHG 10 system that the entire measurement chain is configured to be isothermal and isobaric in order to avoid condensation or evaporation effects with liquid aerosols and to dilute directly under overpressure.

characteristics dilution systems.JPG

Table 1:  Technical characteristics of Palas® dilution systems

Benefits

  • The dilution systems from Palas® are characterized unambiguously. This is documented with a calibration certificate for each individual device.
  • The dilution steps deliver a temporally constant, representative dilution with the factors 10 and 100.
  • The dilution systems can be cascaded with the factors 100, 1,000, 10,000 and 100,000.
  • Low compressed air consumption, e.g. just 128 l/min with a dilution factor of 10,000 with four VKL 10 systems
  • The dilution steps are combinable with all common particle counters.
  • With a simple test set-up these cascaded dilution systems can be checked by the users themselves.
  • Isobaric dilution up to 10 bar overpressure / isothermal dilution up to 120°C with the VKL 10 E, VKL 10 ED, KHG 10 and KHG 10 D dilution systems
  • Simple functional test on-site

Datasheet

Power supply

115 – 230 V, 50 – 60 Hz
Dilution factor 1 : 10
Isokinetic suction nozzles
0.6 – 1.6 l/min, 2 – 5 l/min, 4 – 10 l/min, 8 – 16 l/min, 28 l/min => 15 – 37 l/min
Maximum particle size < 20 µm (for dusts)
Special features
Heatable until 150 °C, cascadable, chemical resistant
Thermodynamic conditions for dilution
≤ 400°C, ≤ 10 barg
Volume flow (clean air)
18 – 45 l/min (heatable until 150 °C)
Volume flow (suction flow) 2 – 5 l/min
Compressed air supply 4 – 8 bar

Applications

  • Dilution of hot aerosols, e.g. engine oil, DEHS, etc.
  • Aerosol measurement technology: Diesel exhaust gases, abrasive dusts, cooling lubricant aerosols, welding fumes, oil droplets, test aerosols of filters and inertial separators
  • Separation efficiency determination by means of counting measuring methods, e.g. oil mist separators
  • Hot gas filtration
  • Measurement of isolators under pressure conditions
  • Toxicology, e.g. testing of medical nebulizers / inhalation studies etc.
  • Dilution of hot aerosols, e.g. engine oil, DEHS, etc.
  • Aerosol measurement technology: diesel exhaust gases, swarfs, coolant aerosols, weld smoke, oil droplets, test aerosols of filters and inertial separators
  • Separation efficiency determination with counting measuring methods, e.g. oil mist separators
  • Hot gas filtration   
  • Toxicology, e.g. testing of medical nebulizers / inhalation studies etc.

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