Related Manuals for Palas VKL 10
Summary of Contents for Palas VKL 10
- Page 1 PALAS GmbH Partikel- und Lasermesstechnik Greschbachstrasse 3b 76229 Karlsruhe Phone +49 (0)721 96213-0 +49 (0)721 96213-33 mail@palas.de www.palas.de Operation Manual Dilution System VKL 10 and VKL 100...
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Page 2: Table Of Contents
VKL 10 /100 PERATION ANUAL Content Important Note !!! ........................... 4 1. Delivery ..............................5 1.1. Delivery Check ......................... 5 Safety conditions / Intended use ....................6 2.1. General safty conditions ......................6 2.2. Intended use ..........................6 2.3. Responsibility of the operator ....................6 Initial Operation .......................... - Page 3 VKL 10 /100 PERATION ANUAL 7.2.1. Filter Control ........................23 7.2.2 Filter Change ......................... 23 8. Maintenance ............................. 24 9. Troubleshooting ..........................27 10. Problems – what to do if the dilution system of the series VKL does not work correctly: ..... 28 10.1...
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Page 4: Important Note
VKL 10 /100 PERATION ANUAL Important Note !!! It is important to read the operating instructions thoroughly before operating the dilution system ! The manufacturer will not be liable for damages caused by incorrect handling, operating or cleaning. Please observe the following points: ... -
Page 5: Delivery
1 suction nozzle 4 transport covers (yellow plastic parts, installed at the equipment) 1 box spanner, size 14 mm (nut) 1 tube connector for the excess aerosol outlet (black plastic part). Fig.: 1.1 VKL 10 V005-06-2020 ERSION... -
Page 6: Safety Conditions / Intended Use
• For safety reasons, under no circumstances may the machine be commissioned if there is visible damage. In this event, please contact Palas® (Tel.: 0721/96 213-0). • The dilution system has been set by the manufacturer to be used with a maximum pre- pressure of P 8 bar for the compressed air supply. -
Page 7: Initial Operation
VKL 10 /100 PERATION ANUAL Initial Operation 3.1 Initial operation and short instruction remove all four transport covers; keep them and re-install them after experiment is done. position dilution system inbetween dust or aerosol take-out and measuring instrument ... -
Page 8: Operating Principle
Consequently, the dilution stage is a self-sucking system. One single dilution stage VKL 10 has a dilution factor of 10. If a higher dilution factor is required, several units may be connected in series. Such a cascade connection permits for example the dilution of 2 liters of aerosol with only 72 liters of clean air by a factor of 10,000. -
Page 9: The Inlet System And The Mixing Chamber
PERATION ANUAL 4.2. The Inlet System and the Mixing Chamber The details given in the following chapter only apply to VKL 10! Figure 4.1. shows a cross-section of the dilution stage. Particle-free air with a volume flow rate V determined by the pre-pressure P, flows through an annular slit around the inlet nozzle. -
Page 10: The Dilution Factor
VKL 10 /100 PERATION ANUAL 4.3. The Dilution Factor The dilution factor W describes the ratio between the total volume flow rate V and the inlet volume flow rate V W = V with: : clean air flow rate) The enclosed publication describes this equation in more detail. It demonstrates in theory and practice that the dilution ratio remains constant, independently of the pre-pressure, within a large range. -
Page 11: Equipment Layout
VKL 10 /100 PERATION ANUAL 5. Equipment Layout 5.1. The Pneumatic System Figure 5.1. shows the pneumatic system. Pre-cleaned compressed air is conducted via a toggle switch to a pressure reduction valve. Via a permanently adjusted throttle and the pre- pressure indicated at the pressure gauge, the volume flow rate may be adjusted reproducibly. -
Page 12: Components And Their Function
VKL 10 /100 PERATION ANUAL 5.2. Components and their Function The figure on the next page shows a dilution system partially disassembled. One can see the compressed air connection, marked P 8 bar. Below, the toggle switch "On-Off" can be seen. - Page 13 VKL 10 /100 PERATION ANUAL V005-06-2020 ERSION...
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Page 14: The Calibration Certificate
VKL 10 /100 PERATION ANUAL 5.3. The Calibration Certificate For manufacturing reasons it is not possible to exactly trim the dilution factor to its theoretical value of 10. Therefore, every single stage is calibrated and the data values are recorded in a calibration certificate. -
Page 15: Operation
VKL 10 /100 PERATION ANUAL 6. Operation 6.1. Installation When installing the dilution system, various tubes need to be connected to transport the aerosol. In order to minimize the transportation loss, these tubes should be as short and straight as possible. When diluting aerosols with a particle size bigger than 5 µm or 10 µm, vertical operation of the dilution stages is recommended to minimize sedimentation loss. -
Page 16: Cascading Of Two Or More Units
The VKL 100 is positioned upstream of the VKL 10. Advantage: By taking the sample from the VKL 100 by the VKL 10 only a small error is caused due to the non-isokinetic sampling conditions. The flow velocity in the inlet nozzle of the VKL 10 is too high by only 10 %. - Page 17 VKL 10 /100 PERATION ANUAL pressurized air excess air aerosol duct Fig 6.1 : Installation with dilution factor 10 pressurized air e x p r e s s a i r a e r o s o l d u c t Fig 6.2 : Installation with dilution factor 1000...
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Page 18: Selecting Appropriate Outlet Nozzles
For VKL 100, the same outlet nozzles can be used as for VKL 10. In order to achieve exact isokinetic conditions, the clean air volume flow rate has to be lower by 10 % than for the VKL 10. -
Page 19: Setting Of Pre-Pressure
VKL 10 /100 PERATION ANUAL 6.3. Setting of Pre-pressure The pre-pressure is set by turning the knob of the pressure reduction valve and can be seen on the pressure gauge. With the regulator adjustment completely backed-off the air supply can be turned on. The adjusting knob can be rotated clockwise to increase the spring load and the pressure increase observed on the gauge. -
Page 20: Impact Of Pressure And Temperature
VKL 10 /100 PERATION ANUAL 6.4. Impact of Pressure and Temperature The dilution stages are constructed at the plant in such a way that the dilution factors indicated in the calibration certificate are only reached, if: - the pressure inside the mixing chamber is equal to the... -
Page 21: Cleaning
VKL 10 /100 PERATION ANUAL 7. Cleaning 7.1 General Information From time to time, the dilution system should be cleaned, depending on frequency of use and degree of dirtiness. In most cases, a careful blowing of the VKL with compressed air is sufficient. -
Page 22: Cleaning Of The Mixing Chamber
VKL 10 /100 PERATION ANUAL 7.1.3. Cleaning of the Mixing Chamber If the cleaning of the mixing chamber with compressed air is not sufficient, it needs to be opened for further cleaning. Note: You need a torque spanner for reassambling the cover! To open the mixing chamber, use the box spanner which comes with the accessory equipment, and turn the throttle screw counterclockwise until it can be moved freely. -
Page 23: Filter Control And Filter Change
VKL 10 /100 PERATION ANUAL 7.2. Filter Control and Filter Change 7.2.1. Filter Control The lifetime of the filter depends first of all on the quality of the compressed air used. When using pre-cleaned and dried compressed air, the lifetime will last for several years. -
Page 24: Maintenance
VKL 10 /100 PERATION ANUAL 8. Maintenance ® PALAS recommends an annual maintenance of the dilution systems. The maintenance procedure includes besides of an entire function check (e.g. annular clearance, dilution factor) the issueing of an updated calibration certificate. Additionally, the particle cleanliness of the VKL is being checked and reconditioned in case of contamination. - Page 25 VKL 10 /100 PERATION ANUAL Please note: In order to be able to measure laboratory air coincidence-free with a clean room counter, the VKL 100 is connected before the OPC. Normally, the dilution system VKL 10 is used during a cascading as the first system.
- Page 26 VKL 10 /100 PERATION ANUAL The particle-technical function test of the VKL series can be accomplished so simply on-site by everyone. At the same time, this test proves that the measurement 1 in position 1 was coincidence-free. Please note: If the dilution factor determined in such a way is not correct, then either the measurement was still performed in coincidence in position 1 during measurement 1, or the test system must be maintained.
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Page 27: Troubleshooting
VKL 10 /100 PERATION ANUAL 9. Troubleshooting Symptom Presumable Cause Elimination dilution system "produces" nozzle, mixing chamber dirty cleaning particles filter malfunction exchange filter inside channels dirty flush, or general overhaul at plant outlet flow higher than total flow increase pre-pressure ... -
Page 28: Problems - What To Do If The Dilution System Of The Series Vkl Does Not Work Correctly
Palas® employee. In the event of infringement, the customer loses their warranty claims; in addition Palas® is not liable for the damage arising. In case of problems with the dilution system of the series VKL, please contact Palas® GmbH (Tel.: 0721/96 213-0). -
Page 29: Technical Data
VKL 10 /100 PERATION ANUAL 11. Technical Data Aerosol inlet flow rate VKL 10 2,0 - 5,0 l/min VKL 100 0,1 - 0,5 l/min Outlet flow rate with 2,00 - 5,00 l/min standard nozzle 8,8 mm 15,00 - 37,00 l/min... -
Page 30: Spare Parts List / Accessories List
13.1 Packaging: Please keep the original packaging, so that if it should become necessary (for service or recalibration) you can use this packaging to send the unit back to Palas®. 13.2 Storage: If the unit will not be used for a longer period, the instrument should be cleaned. Then the unit should be stored in a dry location. -
Page 31: Disposal Of The Vkl Dilution Systems
ANUAL 14. Disposal of the VKL dilution systems Once the dilution system of the series VKL has reached the end of its lifetime, please contact Palas® (0721-96213-0) for proper disposal. 15. Literature Koch, W.; Lödding, H.; Mölter, W.; Munzinger, F.: Verdünnungssystem für die Messung hochkonzentrierter Aerosole mit... -
Page 32: Feedback Form
Address: Greschbachstraße 3 b, 76229 Karlsruhe, Germany Telephone: +49 (0)721 96213-0 Fax: +49 (0)721 96213-33 E-mail: mail@palas.de This evaluation concerns (Instruction Manual, version): VKL 10 / VKL 100, V003012014 Please give us your contact details: Company: ________________________________________________________________ Name: ___________________________________________________________________ Address: __________________________________________________________________...