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Chapter 6 

6-2 

Model 3079A 

Accessories 

Atomizer glass vessel 

 

Model 3062 Diffusion Dryer, direct connection to Model 3079A Aerosol 
Generator possible for generation of salt or PSL-aerosols 

 

Quick-release tube connectors, straight or 90

° (with mounting tool) 

 

Model 3332 Dilution System for a defined aerosol dilution, suitable to verify 
test aerosols using particle counters (test of cleanrooms, laminar flow 
boxes, safety benches according to EN 14644 and VDI 2083-3) 

 

 

Summary of Contents for 3079A

Page 1: ...PORTABLE ATOMIZER AEROSOL GENERATOR MODEL 3079A OPERATION AND SERVICE MANUAL P N 6007492 REVISION A JANUARY 2014 ...

Page 2: ......

Page 3: ...ABLE ATOMIZER AEROSOL GENERATOR MODEL 3079A OPERATION AND SERVICE MANUAL Safety Introduction 1 Product Description 2 Operation and Maintenance 3 Troubleshooting 4 Applications 5 Specifications 6 Appendix 7 ...

Page 4: ...ANTABILITY IS MADE WITH RESPECT TO SELLER S BREACH OF THE IMPLIED WARRANTY AGAINST INFRINGEMENT SAID WARRANTY IS LIMITED TO CLAIMS OF DIRECT INFRINGEMENT AND EXCLUDES CLAIMS OF CONTRIBUTORY OR INDUCED INFRINGEMENTS BUYER S EXCLUSIVE REMEDY SHALL BE THE RETURN OF THE PURCHASE PRICE DISCOUNTED FOR REASONABLE WEAR AND TEAR OR AT SELLER S OPTION REPLACEMENT OF THE GOODS WITH NON INFRINGING GOODS TO TH...

Page 5: ...ols 5 4 Applications 5 5 6 Specifications 6 1 Instrument Specifications 6 1 Specification of Generated DEHS Aerosol at Flow Rate of 250 L h 6 1 Accessories 6 2 7 Appendix 7 1 Periodic Testing of Particulate Matter Air Filters in Cleanroom Equipment 7 1 Recommendations for Carrying out the Leak Test with only one Particle Counter Figure 8 7 2 Estimating the Particle Concentration of the Test Aeroso...

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Page 7: ...ons as well as the assessment of risk of biological substances is in the accountability of the user The user assumes full responsibility in case of the use of radioactive substances Applicable regulations for workplace risks according to Radiation Protection Ordinance and other appropriate regulations have to be followed The implementation of appropriate safety precautions as well as the assessmen...

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Page 9: ...e in the range of the Most Penetrating Particle Size MPPS between 0 1 and 0 3 µm and thereby guarantee a safe evaluation of high performance filters The design and implemented technological features guarantee the production of aerosols with constant particle size distribution and concentration with a high reproducibility The Model 3079A can also produce Latex or salt aerosols In this case a diffus...

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Page 11: ...ts design is focused on long life high availability and robustness of the device The device is very suitable for cleanroom applications because it can easily be cleaned and disinfected All pressure tubes of the atomizer are protected by the sheet steel casing against any exposure from the outside A pressure relieve valve protects the glass vessel Figure 1 Portable Atomizer Aerosol Generator Model ...

Page 12: ... The air is cleaned by a HEPA filter before it is introduced to the atomizer The aerosol flow rate can be adjusted in the range of 60 300 L h This way the particle production can be adapted to the corresponding application To adjust the aerosol flow rate of this model use the needle valve on top of the flowmeter A pressure relief valve is integrated in the head of the atomizer to protect the glass...

Page 13: ...y stainless steel and works as a two stream nozzle based on the injection principle The unique feature is that the outlet points towards the wall of the glass vessel which works as the baffle plate This particle impaction section removes coarse spray droplets and results in a particle size distribution mainly below 1 µm Figure 3 Components of the Atomizer ...

Page 14: ...f the Model 3079A will be altered Lower volumetric flow rates will lead to a reduced particle production rate The following figure shows the correlation between the volumetric flow rate and the particle production rate 1 0E 08 1 0E 09 1 0E 10 1 0E 11 0 10 20 30 40 Scale Particle min 0 3µm Figure 4 Correlation between Volumetric Flow Rate and Particle Production Rate The particle production rate ca...

Page 15: ... During operation ensure that the produced aerosol can freely escape through tubes connected to the atomizer outlet and that there are no bends in the outlet tubes The needle valve at the flowmeter must not be closed completely The aerosol generator should be placed on a rigid and even surface The atomizer glass vessel can be unscrewed and removed in order to be filled with aerosol substance For n...

Page 16: ... tools Note After reassembling the nozzle check the proper position of the O rings Changing the internal HEPA filter can be done by the user see Changing the Internal HEPA Filter below Please contact TSI for all other service and maintenance Changing the Internal HEPA Filter To change the internal filter cartridge first open the Model 3079A Follow these steps 1 Unscrew the eight 8 screws at the si...

Page 17: ...er supply unit Exchange of fine fuses Service Flow rate by far lower than 300 L h Incorrect position of the atomizer glass vessel Flat gasket missing Atomizer nozzle is blocked Pressure drop of the HEPA filter is too high Check correct position of glass vessel Replace flat gasket Clean atomizer nozzle Change HEPA filter cartridge Flow rate much higher than 300 L h Nozzle assembly may be leaking Te...

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Page 19: ...canning Mobility Particle Sizer The produced DEHS aerosols features very high particle concentration 107 particles cm3 for particle sizes close to the so called most penetrating particle size MPPS 0 1 0 3µm The particle concentration is also sufficiently high 1 5 107 particles cm3 in the measuring range of most optical particle counters 0 3 0 5µm The following table shows the Model 3079A flow rate...

Page 20: ... 164 193 1500 186 226 1600 193 237 1800 209 267 1900 217 281 2000 226 296 2200 243 2500 278 2800 311 Calculation of the Particle Concentration in the Produced Test Aerosol If other settings are requested the formula shown below can be used to calculate the total concentration in the test aerosol By entering the flow rate of the Model 3079A Aerosol Generator and the total flow rate the generated co...

Page 21: ...3 AG V x 2 7 x 109 AG V L h The conversion of the units has been considered in the formula PSL Aerosols The Model 3079A Aerosol Generator makes it possible to produce PSL aerosols according to certain particle size standards For this purpose put a suitable latex suspension in the cleaned atomizer bottle The concentration of the PSL suspension is determining the number concentration of the produced...

Page 22: ...tribution of water which has been characterized by means of the residual technique The residual technique is very useful for characterizing droplet distributions of water for instance which evaporates very quickly under normal conditions In this method the produced droplet aerosol is completely dried and the residual distribution is measured afterwards From this residual distribution the droplet d...

Page 23: ...Size for 1 µm Droplet Residual Size for 5 µm Droplet 5 000 50000 ppm 0 368 µm 1 842 µm 1 000 10000 ppm 0 215 µm 1 077 µm 0 500 5000 ppm 0 171 µm 0 855 µm 0 100 1000 ppm 0 100 µm 0 500 µm 0 020 200 ppm 0 058 µm 0 292 µm 0 010 100 ppm 0 046 µm 0 232 µm 0 005 50 ppm 0 037 µm 0 184 µm 0 001 10 ppm 0 022 µm 0 108 µm Applications Generation of very fine aerosols with particle diameters 100 nm Filter tes...

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Page 25: ... 5x20 2A fast acting Power supply 100 240 V AC Dimensions 300 x 120 x 195 mm Weight 4 8 kg Specification of Generated DEHS Aerosol at Flow Rate of 250 L h Number concentration 10 8 particles cm3 Number concentration 0 2 µm 2 107 particles cm3 Number concentration 0 5 µm 5 105 particles cm3 Number concentration 1 µm 1 105 particles cm3 Number concentration class 0 3 0 5 µm 1 5 107 particles cm3 Num...

Page 26: ...l Generator possible for generation of salt or PSL aerosols Quick release tube connectors straight or 90 with mounting tool Model 3332 Dilution System for a defined aerosol dilution suitable to verify test aerosols using particle counters test of cleanrooms laminar flow boxes safety benches according to EN 14644 and VDI 2083 3 ...

Page 27: ...er for measuring the clean air Aerosol Generator Particle counter and dilution system for measuring the test aerosol Steps 1 4 Steps 7 8 MODEL 3332 MODEL 3079A Figure 8 Applications for TSI Instruments Using a test aerosol with a defined number of particles is the basis for checking the quality of the filter In Germany this test procedure defines a minimum particle concentration of 106 cf accordin...

Page 28: ...Counter Figure 8 1 Connect the Model 3079A Atomizer Aerosol Generator to the test aerosol inlet or put the outlet of the aerosol generator at the inlet of the to be tested unit set up the particle counter to the dilution system DIL connect the point of aerosol sampling with the dilution system inlet adjust the dilution system while the particle counter is operating 2 Start up the aerosol generator...

Page 29: ...SI sampling probes according to DIN EN ISO 14644 Estimating the Particle Concentration of the Test Aerosol Calculation Formula for Two Types of Laminar Flow Boxes For both types of laminar flow boxes the particle number concentration in the air can be calculated with formula 1 The particle number concentration of the surrounding air is neglected in this formula total AG AG total AG test V V C V N ...

Page 30: ... 105 Particle cm3 VAG 250 L h 250 103 cm3 h Considering the allowed particle number concentration in the surrounding air the particle concentration in the produced aerosol will be calculated as follows LAF AG total room AG AG LAF room AG test V V V 0 3 C V C V N N c h cm 10 600 h cm 10 250 10 600 0 3 cm Particle 3 5 h cm 10 250 cm Particle 10 8 test C 3 6 3 3 6 3 3 3 3 6 cf Particle 10 9 4 cm Part...

Page 31: ...ol Description C Particle number concentration V Dilution factor V Volumetric flow rate N Aerosol flow rate aerosol generator AG Aerosol generator LAF Laminar flow box room Surrounding air test Test aerosol total Total volumetric flow rate clean Clean air ...

Page 32: ...lar Probe Dimensions WP DP max 6 1 according to EN ISO 14 644 Probe WP 80 mm DP 15 mm air velocity 0 45 m s Particle Concentration in the Test Aerosol 106 Particle m3 Figure 10 Scanning Velocity for Rectangular Sampling Probe 0 001 0 01 0 1 10 100 1000 Scanning velocity m s H 14 U 15 U 16 U 17 ...

Page 33: ...mic viscosity 0 023 Pa s Kinematic viscosity 25 16 mm2 s Density 0 912 kg cm3 DIN 51757 Melting point 225 K 48 C ISO 3016 Boiling point 525 K 252 C DIN 51751 Vapor pressure 293 K 1 Pa Flash point 473 K 200 C ISO 2592 Refractive index Wavelength nm 1 450 650 1 452 600 1 4535 550 1 4545 500 1 4585 450 Vapor Pressure of DEHS vs Temperature ...

Page 34: ...ed CAS No 68649 12 7 Formula CH2CH CH2 7CH3 n Density 0 819 kg cm3 Dynamic viscosity 0 014 Pa s Boiling point 474 K 201 C Refractive index 1 455 Life Time of Aerosol Droplet diameter µm Life Time of Water DEHS 0 1 2 µs 84 min 0 3 73 µs 4 h 1 0 1 ms 57 h 3 0 7 ms 16 d 10 0 80 ms 160 d Values for 20 C ...

Page 35: ...6 19600 295 30 2 58 1010 52 48 25 23 19 74 2 55 13 3 19200 275 25 2 42 1010 52 33 25 19 19 97 2 51 12 4 17900 235 20 2 04 1010 51 49 25 27 20 60 2 65 10 3 14900 190 15 1 58 1010 49 66 25 28 22 12 2 94 7 7 11100 142 10 9 27 109 46 74 24 98 24 33 3 94 4 2 6100 95 5 1 44 109 39 91 23 46 29 27 7 36 0 6 800 70 2 1 43 108 36 83 22 66 31 48 9 03 0 05 75 The Model 3079A can cover a wide particle productio...

Page 36: ...Chapter 7 7 10 Model 3079A Flowmeter Calibration 50 100 150 200 250 300 350 0 10 20 30 40 50 Scale Flow rate l h ...

Page 37: ...sal must be handled according to legal provisions especially for electrical and electronic equipment as well as according to special local regulations and recycling instructions Waste electrical and electronic equipment can be returned to the manufacturer only with an attached completed declaration of decontamination TSI does not cover shipping costs ...

Page 38: ...Chapter 7 7 12 Model 3079A EC Declaration of Conformity ...

Page 39: ... more information USA Tel 1 800 874 2811 UK Tel 44 149 4 459200 France Tel 33 4 91 11 87 64 Germany Tel 49 241 523030 India Tel 91 80 67877200 China Tel 86 10 8219 7688 Singapore Tel 65 6595 6388 P N 6007492 Rev A 2014 TSI Incorporated Printed in U S A ...

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