PORTABLE PARTICLE COLLECTION DEVICE

Description

[0001] The present invention relates to a portable particle collection device for monitoring environmental cleanliness in a production facility according to the preamble of patent claim 1.

[0002] Particle collection devices according to the preamble of the main claim are generally known from the generic prior art. These known particle collection devices are typically used for monitoring and documenting ambient cleanliness at a measuring location, particularly in a production facility. For this purpose, the particle collection devices, also known as particle traps, comprise a collection surface that is preferably oriented horizontally in a measuring state of the particle collection device in order to collect the dirt particles contained in the ambient air through sedimentation. The collection surface has adhesives, particularly chemical ones, to fix the dirt particles sedimented on the collection surface.Furthermore, the particle collection device comprises covering means which can be arranged in a form-fitting manner on the collection unit in a transport state in order to prevent dirt particles from settling on the collection surface outside of the measuring time, i.e. before and after the stationary installation of the particle collection device in the measuring state, which would otherwise result in a falsification of the measuring result.

[0003] The use of such a generic particle collection device is sometimes required by suppliers to the automotive industry and serves to document the cleanliness (ambient cleanliness) during the manufacturing processes of supplied components. The procedure is described in Volume 19.2 of the German Association of the Automotive Industry (VDA Volume 19.2, Technical Cleanliness in Assembly - Environment, Logistics, Personnel and Assembly Equipment) on pages 161-173. From this, it is clear that the particle collection device or collection surface should not only be positioned horizontally but also be secured to the surface at the measurement location to prevent slipping in order to achieve meaningful measurement results.After positioning the particle collection device, the cover materials must be removed from the collection unit to activate it and start the measurement time. This exposes the adhesive-coated collection surface, allowing dirt particles contained in the ambient air to settle on it. During the measurement time, the cover materials must be stored in a clean location, as the measurement process is terminated by resealing the collection unit with the cover materials, and any additional dirt particles trapped on the inner surfaces of the cover materials would falsify the measurement result. However, the cover materials are often stored in normal office drawers or similar freely accessible storage locations, where dirt particles can then settle on the inner surfaces.These additional dirt particles can then result in a critical guideline value for ambient cleanliness being exceeded, which is why an entire production batch of manufactured components must subsequently be sorted out as defective goods due to the incorrectly determined ambient cleanliness and / or have to be cleaned again at great expense.

[0004] Furthermore, there is a risk that the covering materials may detach from the collection unit during transport, resulting in reactivation of the particle trap. This can occur particularly when the particle collection device is transported by an external service provider (such as the postal service) to an outsourced analysis site for evaluation and / or analysis purposes. This also leads to significant distortion of the measurement results, especially since the dirt particles from different particle traps in a mail shipment can mix.

[0005] The EMD Millipore product catalog: "The MAS-100 Family Leading solutions for air monitoring EMD Millipore," dated August 20, 2015, shows a cell culture dish for collecting microorganisms, particularly bacteria, from the air. A collection surface contains a nutrient medium for culturing the microorganisms. A cover can be connected to a collection unit and closed, with additional ventilation holes being formed in a semi-closed state for an incubation process.

[0006] US 3,649,463 A discloses a cell culture dish comprising a cylindrical container with a peripheral gripping rim for transporting the cell culture dish and a covering means.

[0007] EP 3 228 433 A2 shows a cell culture dish, also with a gripping rim, whereby a covering agent can be placed on an open cell culture dish and form a sealing connection with it.

[0008] WO 2007 / 009863 A3 shows a particle collection device with a collecting surface for collecting sedimenting dirt particles from the ambient air, wherein a collection container can be closed for transport.

[0009] US 2016 / 0305854 A1 discloses a particle collection device for a fan with adhesives on a collection surface, wherein the device can be attached in a V-shape to the blades of a fan by means of plug-in elements.

[0010] The under www.youtube.com The available video recording from Cleancontrolling, "Particle Monitoring: Particle Trap Positioning and Activation", January 23, 2014, shows a particle collection device for monitoring environmental cleanliness with a collection unit, a collection surface for collecting sedimenting dirt particles, and a covering agent that can be placed on the collection unit.

[0011] The under www.youtube.com The available video recording Cleancontrolling, "Particle monitoring: particle trap deactivation and evaluation", January 22, 2014, also shows a particle collection device onto which a covering agent can be applied.

[0012] The under www.youtube.com The available video recording Microbial Testing For Pharma & F&b - Milliporesigma, 09.03.2015 reveals a cell culture dish with a sealable coverslip.

[0013] WO 2019 / 161058 A1 shows a through-air filter for collecting particles from actively sucked in ambient air, wherein a filter unit is inserted into a housing that can be closed from an upper side and wherein the housing can be connected to a pumping means on a lower side.

[0014] Based on the aforementioned prior art, the object of the invention is to optimize a generic portable particle collection device with regard to measurement accuracy. The aim is to reduce the influence of disturbances that affect and / or distort the measurement results of the particle collection device, thus improving the measurement accuracy of the particle collection device.

[0015] This object is achieved by the portable particle collection device having the features of the main claim. Advantageous developments of the invention are described in the subclaims.

[0016] In an advantageous manner according to the invention, the collection unit according to the invention has a hollow cylindrical or conical outer surface comprising a base and / or tier element, wherein the inner surface of the base or tier element has the collection surface and the collection surface is not projected beyond by the outer surface in a vertical direction. This design enables the direct arrangement of large-area analysis means on the collection surface at an analysis site, thus facilitating the analysis of the collected particles. Furthermore, this design enables the collection unit of the particle collection device to be used as a dirt particle stamp, thus advantageously expanding the range of applications of the particle collection device. For this purpose, the collection surface is briefly pressed onto a surface to be analyzed at the measurement site to collect dirt particles.

[0017] In a further advantageous manner according to the invention, the transportable particle collection device according to the invention enables the form-fitting arrangement of the covering means with the collection unit in the measuring state in order to prevent additional dirt particles from settling on all inner surfaces of the covering means. In other words, the collection unit can be arranged on the covering means in the measuring state in such a way that, on the one hand, the collecting surface of the collection unit is aligned, in particular horizontally, for collecting the settled dirt particles in the ambient air of the production facility, and, on the other hand, all inner surfaces of the covering means are protected from contamination by settled dirt particles from the ambient air by the form-fitting arrangement below the collection unit.By means of this measure according to the invention, it can be ensured that after the end of the measuring time, i.e. in the transport state of the particle collecting device, no additional dirt particles sediment onto the collecting surface which had previously settled on the inner surfaces of the covering means in the measuring state, i.e. during the measuring time.

[0018] Furthermore, according to the invention, fixing means are provided, in particular integrally formed with the covering means and / or the collecting unit, which enable the covering means to be fixed to the collecting unit during transport, in order to prevent (accidental) opening of the collecting unit during transport. This measure according to the invention ensures that no further dirt particles enter the collecting unit during transport of the particle collection device, which could otherwise settle on the collecting surface and result in a falsification of the ambient cleanliness measurement result.

[0019] Furthermore, it is also an object of the invention to provide a method for operating a transportable particle collecting device according to the invention, which has at least the following steps: The transportable particle collecting device is transferred from the transport state to the measuring state by the covering means, which are arranged in a form-fitting manner on the collecting unit and are fixed to the collecting unit via fixing means, in particular provided in one piece with the covering means and / or the collecting unit, being detached from the collecting unit in order to then be arranged again in a form-fitting manner with the collecting unit in such a way that in the measuring state no additional dirt particles from the ambient air can settle on any of the inner surfaces of the covering means.In addition, during the measurement, the collecting surface is aligned, particularly horizontally, to ensure uniform collection of the dirt particles contained in the ambient air at the measuring location and sedimenting onto the collecting surface.

[0020] According to the invention, the covering means are flat and project at least partially beyond the collecting unit in an edge region, wherein the edge region has at least one edge section arranged at an angle to the surface extension of the covering means, which edge section is in operative connection with at least one contact surface of the collecting unit in the transport state and / or in the measuring state, in particular on the inside and / or end side. In this context, it is preferably provided that the edge section is in operative connection with the contact surface in a form-fitting manner in order to prevent dirt particles from penetrating into the interior of the collecting unit. It is further according to the invention if the fixing means are provided in the edge section and enable mechanical fixing and alignment of the covering means via the contact surface of the collecting unit.This realizes the advantageous formation of one-piece fixing means in order to enable the fixing of the covering means on the collecting unit according to the invention in the transport state.

[0021] In a further development of the invention, the fixing means are designed such that, in the transport state, the positive arrangement of the covering means on the collecting unit can be released in a lifting direction by applying a force acting orthogonally to the collecting surface. In the measuring state, in order to release the positive connection between the covering means and the collecting unit, a force acting counter to the lifting direction must be introduced into the particle collecting device, in particular into the covering means. This allows for an advantageously simple and comfortable transfer of the particle collecting device between the measuring state and the transport state for operating personnel.

[0022] In a preferred embodiment of the transportable particle collection device according to the invention, the fixing means comprise locking means for securing the covering means to the collection unit in the transport state. These locking means preferably comprise an elastically deformable locking element, which is more preferably operatively connected to a circumferential groove of the collection unit or the covering means. In addition to reliably securing the covering means to the collection unit, this offers the advantage that the locking means can be easily released.In addition to easily transferring the particle collection device from the transport state to the measurement state to start the measurement time (activating the particle collection device), this enables the particle collection device to be closed reliably to achieve the transport state, as well as the particle collection device to be reopened easily and conveniently for analysis and evaluation purposes from the transport state at the analysis site. It is also advantageous that damage to the particle collection device is avoided during initial and subsequent opening, while still ensuring reliable closure of the particle collection device during transport and / or storage (protecting the collection unit from the ingress of additional dirt particles).

[0023] In a further development of the invention, the collecting unit has a vertical extension of between 0.5 cm and 5 cm, in particular between 0.5 cm and 2.5 cm and / or a transverse and / or longitudinal extension and / or radial extension of between 2 cm and 15 cm, in particular between 4 cm and 10 cm. It has been shown that with these expedient dimensions of the collecting unit, a collecting surface is created which, on the one hand, is only slightly influenced by the lateral surface, which protrudes beyond the collecting surface in sections, in particular along the vertical extension of the collecting unit, and, at the same time, delivers a sufficiently meaningful and / or reproducible measurement result by providing a sufficiently large collecting surface.

[0024] In a further development, it is further preferably provided that the collection unit and / or the covering means is / are made of a plastic material, in particular of a plastomer material, and / or is / are transparent. The transparent design enables a simple visual inspection by trained operating personnel to check the degree of contamination of the collection unit and the collection area. This makes it possible to react early to an excessive degree of contamination, whereby the necessary countermeasures can then be initiated directly, without having to wait for a (predetermined) measurement duration (time interval) and / or an additional delay for the transport of the particle collection device from the measurement location to the analysis location and the subsequent analysis of the collection area there.

[0025] In this context, it is further provided that the collection surface and / or the adhesive on the collection surface has / have a white or black contrasting color to enable trained operating personnel to visually inspect the degree of contamination (determination of the number and size of the dirt particles). This advantageous measure can simplify the visual inspection by the operating personnel, depending on the dirt particles to be analyzed, in order to detect high levels of dirt particles in the ambient air at an early stage and to initiate appropriate countermeasures. Particularly when the particle collection device is used in a production facility, this can help to avoid high costs for defectively produced components (parts), since entire production batches would otherwise be unusable or even have to be disposed of due to a demonstrably excessive level of dirt particles in the ambient air.would have to be cleaned at great expense, which could also result in high claims for damages.

[0026] In a further development, it is also provided that, in the measuring state, the particle collection device is arranged on flat handling means, in particular having a positioning marking, wherein the collection unit is arranged on the handling means in the measuring state in such a way that the arrangement (alignment) of the collection surface is ensured at a distance from side modules and / or side walls of the measuring location, in particular the production facility. This advantageous measure also contributes to the reduction of disturbances affecting the measurement, since it enables the maintenance of a minimum distance of the collection unit in a surprisingly simple manner in the measuring state.

[0027] In a preferred embodiment of the particle collection device, the handling means are firmly connected to the covering means, in particular via mechanical and / or chemical connecting means. In the measuring state, the covering means are arranged on the handling means to ensure the minimum spacing of the collection unit from side modules and / or side walls. In other words, in the measuring state, the particle collection device is arranged on the handling means, since these are firmly connected to the covering means.Thus, when transferring the particle collection device from the transport state to the measuring state, the covering means including the handling means are released from the positive arrangement on the collection unit in order to then reconnect the covering means, in particular on the underside of the collection unit, to the collection unit in a positive-locking manner, wherein the handling means are then arranged on the opposite end face of the covering means to the collection unit.

[0028] It is further preferred if the flat handling means have a writable surface, with fillable prints provided thereon, which are particularly designed in the form of a form. This enables standardized documentation of the measuring process by operating personnel, in order to log a measuring process with the particle collection device and thus to clearly assign a measuring location and the measuring time to each (analyzed) particle collection device at the analysis site, since the measurement can be characterized by this data.

[0029] In a further development, the handling devices are designed to be made of paper, cardboard, carton, and / or a film, preferably made of plastic. This makes them not only cost-effective to manufacture, but also suitable for labeling with a standard handheld writing instrument, particularly a marker pen. In addition to advantageously simple documentation of the measurement process (through the characterizing measurement data), this leads to a reduced source of error, even with changing, sometimes poorly trained operating personnel.

[0030] In a further development, the handling means extend along a longitudinal axis, wherein in the measuring state the particle collecting device, in particular the covering means and the collecting unit having the collecting surface, is / are provided and / or arranged on one end of the handling means and gripping means for gripping and positioning the particle collecting device are formed by the other end of the handling means.

[0031] In this case, a preferred embodiment of the handling means provides that the outer contour of the handling means is formed at least in sections parallel to the particle collecting device, in particular to the hollow cylindrical or conical surface of the collecting unit and / or the covering means, whereby a minimum distance to side modules and / or side walls of the measuring location can be maintained or realized in an advantageously simple manner.

[0032] Finally, the invention also encompasses an embodiment of the particle collection device, wherein the handling means comprise a, in particular detachable, adhesive strip, preferably designed as Power-Strips®<, for forming an adhesive connection between the underside of the handling means and a substrate at the measuring location. The adhesive strip projects beyond the handling means, in particular along the longitudinal axis L, in sections to form a holding section between the thumb and index finger of an operator. Furthermore, in the region of the holding section, a banderol forming a protective sheath for the adhesive strip is provided, which preferably surrounds the holding section in sections on the top and bottom sides as well as on the two side surfaces and is in operative connection with the adhesive strip, in particular in the side surfaces of the adhesive strip.In other words, the banderol prevents several particle collection devices from sticking together during transport before a measurement process is carried out or initialized.

[0033] Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawings.

[0034] These show in: Fig. 1: an exploded view of a preferred embodiment of the transportable particle collecting device according to the invention, Fig. 2: a perspective view of the Fig. 1 known particle collecting device in the left half of the figure in the measuring state and in the right half of the figure in the transport state, Fig. 3: a side view of the Fig. 1 known particle collecting device in the measuring state, Fig. 4: a greatly enlarged view of the fixing means and Fig. 5A and Fig. 5B: an end view of the handling means in Fig. 5A and a cross-sectional view of the adhesive strip in Fig. 5B .

[0035] In the figures, elements and assemblies that are functionally identical or equivalent to one another are identified by the same reference symbols.

[0036] In the Fig. 1 An exploded view of a preferred embodiment of the transportable particle collection device 100 according to the invention is shown, wherein the arrangement of the components shows the particle collection device 100 in a measuring state 12. The particle collection device 100 comprises a collection unit 4 having a collecting surface 2, covering means 6, and handling means 10, which are connected to the covering means 6 via chemically acting connecting means 8. Furthermore, an adhesive strip 32 is assigned to the underside of the handling means 10 in order to fix the handling means 10 at a measuring location on the substrate and thus ensure a fixed position of the particle collection device 100 during the entire measuring time. The adhesive strip 32 projects beyond the underside of the handling means 10 in sections such that the projecting end section of the adhesive strip 32 forms a holding section 48 for gripping the adhesive strip 32 between the thumb and index finger.Furthermore, the holding section 48 is wrapped with a banderol 50, which is operatively connected to the adhesive strip 32 at least on the side surfaces of the adhesive strip 32. For cost-effective mass production, the collecting unit 4 comprising the collecting surface 2 and the covering means 6 are made of a transparent plastic material 48. Furthermore, the adhesive means 26 provided on the collecting surface 2 have a white contrasting color 48 to enable a visual inspection of the degree of contamination of the collecting surface 2 by trained operating personnel.

[0037] The Fig. 1 The collecting unit 4 shown has a hollow cylindrical outer surface 16, wherein a tiered element 18 is provided inside the outer surface 16 to form the collecting surface 2, which tiered element is preferably designed as a one-piece component with the hollow cylindrical outer surface 16. The tiered element 18 forms the collecting surface 2 and comprises adhesive means 26 which enable the dirt particles 24 sedimented from the ambient air onto the collecting surface 2 to be fixed. The covering means 6, which have inner surfaces 28, also comprise a round, flat base surface and have an edge section 22 in an edge region 20 which, in the measuring state 12, is in operative connection with the outer surface 16 of the collecting unit 4 as a contact surface 46.

[0038] In the Fig. 2 is the one from the Fig. 1 known portable particle collecting device 100 is shown in a perspective side view, wherein in the left half of the figure the Fig. 2 the particle collecting device 100 according to the invention in the measuring state 12 and in the right half of the figure the Fig. 2 the particle collecting device 100 according to the invention is shown in the transport state 14.

[0039] To perform a measurement to monitor ambient cleanliness at a measurement location, the portable particle collection device 100 must be arranged in measurement state 12. In measurement state 12, the collection surface 2 of the collection unit 4 is oriented horizontally so that dirt particles 24 from the ambient air can settle unhindered and evenly by sedimentation onto the collection surface 2, where they are fixed by the provided adhesives 26. Furthermore, the covering means 6 are arranged in a form-fitting manner on the collection unit 4 in measurement state 12 such that no dirt particles 24 from the ambient air adhere to the inner surfaces 28 of the covering means 6.The handling means 10 are made of kink-resistant cardboard and extend along a longitudinal axis L, wherein the covering means 6 and the form-fitting collection unit 4 are provided in one end region of the handling means 10 by means of the chemically acting connecting means 8 on the handling means 10. The end of the handling means 10 opposite along the longitudinal axis L provides gripping means 30, which enable the particle collection device 100 to be held and positioned by an operator (not shown). The end region of the handling means 10 receiving the covering means 6 has a round outer contour 38, which runs at least partially parallel to the round outline of the covering means 6. Due to the constant spacing of the outer contour 38 of the handling means 10 from the outline of the covering means 6 orthe round outline of the hollow cylindrical shell surface 16 of the collecting unit 4, when positioning the particle collecting device 100 in the measuring state 12, a minimum distance of the collecting surface 2 from side modules and / or side walls of the measuring location not graphically shown in the figures is advantageously realized.

[0040] The parameters characterizing the measurement can be entered in provided, form-like prints 40 of the handling means 10. For this purpose, it is particularly advantageous if the handling means 10 have a writable surface 42. Thus, the characteristic parameters of a measurement, such as the exact installation location of the particle collection device 100 in measurement state 12 as the measurement location, as well as the measurement times, can be documented by appropriately instructed operating personnel by noting the start time and the end time of the measurement of the ambient cleanliness. This enables an assignment to the measurement location and the realized measurement time after analysis and evaluation of the dirt particles 24 deposited on the collection surface 2.

[0041] To end the measurement time (deactivation of the particle collection device 100), the particle collection device 100 is transferred from the measuring state 12 to the transport state 14. For this purpose, the covering means 6 arranged in a form-fitting manner below the collection unit 4, together with the handling means 10 firmly connected thereto via the connecting means 8, are first detached from the collection unit 4 by a force acting parallel to the collection surface 2. To realize the transport state 14, the detached covering means 6 with the handling means 10 are then rotated by a 180° rotation about the longitudinal axis L in order to be arranged in a form-fitting manner on the collection unit 4 in such a way that no further dirt particles from the ambient air can settle on the collection surface 2. As can be seen from the right side of the Fig. 2 As can be seen, the covering means 6 project completely beyond the collecting surface 2 and lie in a form-fitting manner on the hollow-cylindrical outer surface 16. In this way, the penetration of additional dirt particles into the interior of the collecting unit 4 can be ruled out. Furthermore, in the measuring state 12, the inventive form-fitting arrangement of the covering means 6 beneath the particle collecting device 100 ensures that in the transport state 14, there is no additional contamination of the collecting surface 2 by additional dirt particles which have settled on the inner surfaces 28 of the covering means 6 in the (upstream) measuring state 12. Since, in the transport state 14, according to the invention, the covering means 6 are mechanically fixed to the collecting unit 4 by means of provided fixing means 34, accidental orThis prevents accidental opening of the particle collection device 100, which would otherwise result in a falsification of the measurement result due to the penetration of additional dirt particles. Thus, the portable particle collection device 100 can be sent to the analysis site without additional, difficult-to-remove securing elements (particularly by a postal service), without the risk of the covering means 6 becoming detached from the collection unit 4 and resulting in a falsification of the measurement.

[0042] In the Fig. 3 The transportable particle collection device 100 known from the preceding figures is shown in a side view in transport state 14, whereby it could be transported in a commercially available envelope 52 or similar transport means. The fixing means 34 can ensure that the covering means 6 do not detach from the collection unit 4, which would result in a falsification of the measurement result due to additional dirt particles.

[0043] In the Fig. 4 is the one in the Fig. 3 marked area of ​​the edge section 22 of the covering means 6 with the provided fixing means 34 is shown on a greatly enlarged scale. The fixing means 34 are designed as locking means 35, wherein in the edge section 22 of the covering means 6 a locking element 36 is provided, which in the fixed transport state 14 is in operative connection with a circumferential groove 44 in the outer circumferential surface 16 of the collecting unit 4 such that the covering means 6 are only released from the collecting unit 4 after the application of a minimum force acting orthogonally to the collecting surface 2 in a lifting direction H. In addition, the outer circumferential surface 16 of the collecting unit 4 forms a contact surface 46 for aligning the covering means 6 over the edge section 22 of the covering means 6. As can be seen from the Fig. 4 As can be seen, a circumferential groove 44 is also provided for cooperating with the same locking element 36 in order to fix the covering means 6 in the measuring state 12.

[0044] In the Fig. 5A a section of the handling means 10 extending in the axial direction A is depicted, wherein the end of the handling means 10 is shown, in which the adhesive strip 32 partially projects beyond the handling means 10 to form the holding section 48. To realize the holding section 48, the banderole 50 is arranged circumferentially around the adhesive strip 32 or around film elements 54 projecting beyond the adhesive strip 32 along the axial direction A and provided directly on the top and bottom of the adhesive strip 32. By the banderole 50, which preferably has adhesive on one side, the side surfaces 56 of the adhesive strip 32 are protected from unintentional sticking, which is also achieved by the Fig. 5B shown sectional view becomes clear. In this way, in the transport state 14, the banderol 50 can prevent (unintentional) sticking of a plurality of particle collecting devices 100, each comprising an adhesive strip 32 with a banderol 50 and two film elements 54, which can thus also be stored and / or transported in a common storage unit, in particular an envelope 52. In addition to the design of the banderol 50 as a circumferentially closed band, it can also be expedient to select a strip-like design for the banderol 50 which is open at the ends, in which case the side surface 56 of the adhesive strip 32 is then clearly projected over by the open ends of the banderol 50 in order to prevent unintentional sticking here too. Bezugszeichen

[0045] 2Collecting surface 4Collecting unit 6Covering means 8Connecting means 10Handling means 12Measuring state 14Transport state 16Hollow cylindrical surface 18Base and / or tier element 20Edge area 22Edge section 24Dirt particles 26Adhesive means 28Inner surface 30Gripping means 32Adhesive strip 34Fixing means 35Locking means 36Locking element 38Outer contour of the handling means 40Printing 42Writable surface 44Circumferential groove 46Contact surface 48Holding section 50Banderol 52Envelope 54Foil element 56Side surface of the adhesive strip 100Particle collection device LLongitudinal axis HHeavy direction AAxial direction in relation to handling equipment

Claims

1. A transportable particle collection device (100) for monitoring an environment cleanliness at a measuring location, in particular at a production site, having a collection unit (4) which is disposed in such a manner in a measuring state (12) during a measuring time that a collection surface (2) for collecting deposited dirt particles (24) from the environment air is aligned in particular horizontally, the collection surface (2) having, in particular chemically acting, adhesion means (26) for fixating the dirt particles (24) deposited on the collection surface (2), and having covering means (6) which are disposable on the collection unit (4) in a form-fit manner in a transport state (14) such that no other dirt particles are deposited on the collection surface (2) from the environment air, characterized in that the collection unit (4) has a hollow-cylindrical or conical jacket surface (16) comprising a bottom element and / or tier element (18), the inner surface of the bottom element and / or tier element (18) having the collection surface (2) and the jacket surface not protruding beyond the collection surface (4) in height, the covering means (6) being disposed in a form-fit manner with the collection unit (4) in the measuring state as well such that no dirt particles are deposited from the environment air on any inner surfaces (28) of the covering means (6) and that the covering means (6) are fixed on the collection unit (4) via designated mechanically acting fixation means (34) in the transport state (14), the covering means (6) being planar and the collection unit (4) protruding at least in sections in an edge area (20), the edge area (20) having at least one edge section (22) disposed angularly to the planar extension of the covering means (6), the edge section (22) being in operative connection with, in particular the interior and / or the end of, at least one abutment surface (46) of the collection unit (4) in the transport state (14) and in the measuring state (12), the fixation means being provided in the edge section and allowing a mechanical fixation and alignment of the covering means via the abutment surface of the collection unit.

2. The particle collection device according to claim 1, characterized in that the form-fit position of the covering means (6) on the collection unit (4) is released by applying force which acts orthogonally to the collection surface (2) in a lifting direction (H) in the transport state, and in that the form-fit position between the collection unit (4) and the covering means (6) is released by applying force which is directed in the opposite direction of the lifting direction (H) in the measuring state (12).

3. The particle collection device according to claim 1 or 2, characterized in that the fixation means (34) comprise, in particular elastically deformable, locking means (35) in the transport state (14) in order to fixate the covering means (6) on the collection unit (4), the edge section (22) preferably comprising a locking element (36) which engages in a circumferential groove (44) of the collection unit (4) in the transport state (14).

4. The particle collection device according to any one of the claims 1 to 3, characterized in that the collection unit (4) has a height between 0.5 cm to 5 cm, preferably between 0.5 cm to 2.5 cm, and / or a transverse extension and / or a length and / or a radial extension between 2 cm to 15 cm, preferably between 4 cm to 10 cm.

5. The particle collection device according to any one of the claims 1 to 4, characterized in that the collection unit (4) and / or the covering means (6) is made of a plastic material, in particular of a plastomer material, and / or is transparent.

6. The particle collection device according to any one of the claims 1 to 5, characterized in that the collection surface (2) and / or the adhesive means (26) have a white or black contrast coloring (48) for a visual examination of the degree of dirtiness,7. The particle collection device according to any one of the claims 1 to 6, characterized in that in the measuring state, the particle collection device (100) is disposable on planar handling means (10), in particular having a positioning marking, for the spaced positioning of the collection unit (4) from lateral modules and / or lateral walls of the measuring space, in particular the production site.

8. The particle collection device according to claim 7, characterized in that the handling means (10) are fixed on the covering means (6), in particular via mechanical and / or chemical connective means (8), the covering means (6) disposed in a form-fit manner with the collection unit (4) being disposed on the handling means (10) in the measuring state (12).

9. The particle collection device according to claim 7 or 8, characterized in that the planar handling means (10) have a surface (42) configured to be written on, printings (40), in particular form-like printings, intended to be filled out being provided.

10. The particle collection device according to any one of the claims 7 to 9, characterized in that the planar handling means (10) are made of paper, cardboard and / or a film made in particular of plastic.

11. The particle collection device according to any one of the claims 7 to 10, characterized in that the handling means (10) extend along a length (L), the collection unit (4) and / or the covering means (6) being provided on one end in the measuring state (12) and the handling means (10) forming grabbing means (30) for grabbing and positioning the particle collection device (100) in the measuring state (12).

12. The particle collection device according to claim 11, characterized in that the end of the outer contour (38) of the handling means (10) forms at least sections of curves parallel to the, in particular hollow-cylindrical or conical, jacket surface (16) of the collection unit (4).

13. The particle collection device according to any one of the claims 7 to 12, characterized in that an adhesive strip (32) for forming a chemical adhesive connection between the underside of the handling means (10) and a base at the measuring location is assigned to the handling means (10), sections of the adhesive strip (32) protruding beyond the handling means (10), in particular along the length (L), for forming a holding section (48) between thumb and forefinger and the holding section (48) being surrounded by a label (50) in operative connection with the adhesive strip (32).