EP0295290A1 - Procede et dispositif de prelevement d'echantillons de mesure dans un courant de matieres en vrac - Google Patents

Procede et dispositif de prelevement d'echantillons de mesure dans un courant de matieres en vrac

Info

Publication number
EP0295290A1
EP0295290A1 EP88900683A EP88900683A EP0295290A1 EP 0295290 A1 EP0295290 A1 EP 0295290A1 EP 88900683 A EP88900683 A EP 88900683A EP 88900683 A EP88900683 A EP 88900683A EP 0295290 A1 EP0295290 A1 EP 0295290A1
Authority
EP
European Patent Office
Prior art keywords
flow
partial
bulk material
sample
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88900683A
Other languages
German (de)
English (en)
Inventor
Daniel Brunnschweiler
Emanuel Kummer
Bruno Bischoff
Hans Oetiker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buehler AG
Original Assignee
Buehler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Buehler AG filed Critical Buehler AG
Publication of EP0295290A1 publication Critical patent/EP0295290A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G01N33/10—Starch-containing substances, e.g. dough
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • G01N2021/8592—Grain or other flowing solid samples

Definitions

  • the invention relates to a method and a device for forming measurement samples from a bulk material flow, in particular food and feed, for the purpose of determining one or more material parameters, such as protein content, moisture, color, ash, granulation etc., a first of the bulk material flow Partial flow derived and this is combined again with the bulk material flow.
  • material parameters such as protein content, moisture, color, ash, granulation etc.
  • a second key problem lies in the fact that, although it is recognized that very precise measurement results can be obtained in the laboratory, the laboratory itself has almost no influence on whether the measurement sample is representative of the product stream, possibly for an entire product batch.
  • a device is known in which the product stream is run over a weighing system to form the measurement sample, so as to form the size of the sample from the current product stream. If a measurement sample of a few percent is taken from a current division using such a system, e.g. B. from less than 10 or less than 2% of the product stream, strong segregation must be expected, since an edge layer of the free-falling product stream is then preferably detected. Experience has shown that this differs greatly from the average of the bulk material.
  • the FR-PS 2 345 720 proposes to form the measurement sample by only briefly releasing a by-pass channel.
  • the flap mechanism required for this also results in a disturbance to the product flow, so that segregation and fluctuating product removal time, depending on the size of the current throughput in the main line, also lead to falsified measurement samples and correspondingly falsified measurement values.
  • the moisture measurement method described in DE-OS 3 441 856 is used for floury goods.
  • the measured material is guided through a measuring channel via a by-pass channel to determine water content, protein, etc.
  • the measurement itself is carried out using infrared light. The light emitted back from a sample surface is sighted and the respective water content is calculated from it.
  • the invention now encompasses the task of forming samples, preferably very small samples, from a continuous flow of bulk material in such a way that the measurement sample can be used as representatively as possible for the flow of bulk material and can be used directly without great delay, if possible online and in calibration time.
  • the above object is achieved in the generic method mentioned in the introduction in that the first partial flow or a further partial flow derived therefrom is backed up at least temporarily, a small percentage of the backed up partial stream is at least partially continuously taken as a measurement sample and this measurement sample is then determined by a corresponding one to determine the material parameters Measuring device is guided.
  • this object is achieved by one or more flow dividers for dividing the bulk material flow into a main flow and one or more partial flows, by return means for returning at least the first partial flow to the main flow, by a measurement sample flow divider for taking a Measurement sample from the lowest partial flow, and by means of first backflow means for at least temporarily backflow of the smallest partial flow in the area of the measurement sample flow division.
  • the idea on which the measuring device according to EP-PS 43 137 is based gives very advantageous results if the essential part of the corresponding measuring device, instead of being the measuring device itself, is taken as a secondary or partial flow in EP-PS 43 137 and from it a measurement sample is derived.
  • the actual measurement sample occurs with a very small time delay and shows almost no segregation in the case of small samples of a few percent or per thousand. It is particularly important that the measurement sample formation takes place in the backwater. It has been shown that the behavior of a segregation inherent in the bulk goods can be switched off with sufficient certainty. Complicated mechanisms for obtaining many measurement samples and remixing are no longer an imperative.
  • the flow property is influenced in the favorable sense by the jam of the goods; the bulk material behaves similar to a liquid in a traffic jam and is not subject to the air vortex disturbances of free bulk material fall.
  • the bulk material behaves similar to a liquid in a traffic jam and is not subject to the air vortex disturbances of free bulk material fall.
  • different particles move towards each other at different speeds. These relative particle velocities can arise from the difference in the specific weight, the shape, the surface air resistance etc. of the individual particles.
  • the relevant backflow reduces the relative movements of the particles to one another to the extent that they are negligible for the measurement purposes required here. In other words, the different particles move only negligibly against each other. As a result, the segregation effects, more generally the sample falsifications, are reduced to a negligible level.
  • the invention allows a whole series of further advantageous configurations.
  • the measurement sample is preferably removed via a conveyor element, preferably a screw or a pneumatic cylinder, which works from the backflow area of the secondary flow, the product quantity of the measurement sample being able to be adjusted by varying the discharge capacity of the conveyor element; this also gives a quasi a "sample” from the "sample”.
  • a conveyor element preferably a screw or a pneumatic cylinder
  • measuring methods such as NMR, (nuclear magnetic resonance) and NIR (near infrared), which due to the special measuring technology allow only the smallest measuring samples.
  • the size of the measurement sample is a decisive criterion for the accuracy of the measurement result in relation to the entire product quantity.
  • the laboratory raw materials are preferred to check the raw materials and then the finished products. Only the ever increasing automation of production made it necessary to examine intermediate products during processing for their ingredients, for example to make the necessary changes to the manufacturing parameters.
  • the percentage water content of a bulk material is particularly suitable for NMR measurement.
  • the signal received is a direct measure of the number of hydrogen nuclei.
  • H sporadic measurements
  • Measurements at comparatively large intervals are brought to a standstill in the measuring device. If, on the other hand, the time interval between the individual measurements is short or even negligible compared to the dwell time of the sample in the measuring device, it is not necessary to stop the measuring sample, the measuring sample is preferably carried out continuously by the measuring device.
  • Grain and flour products are usually still living in the mill area. Most of the grains are germinable. Many essential life processes still take place in the flour or within the individual protein bodies, e.g. B. breathing. As a result, the detection of the Water is faced with the entire microbiological and physical processes within the product mass, the water being known to form very different bonds.
  • the NMR method can be used to determine representative values after only a short calibration.
  • the same calibration could be used for all average wheat varieties without measuring deviations being ascertainable, the measuring accuracy being plus / minus 0.2% even for personnel not trained in NMR technology; therefore all types of products can be measured with the same basic measuring method.
  • the NMR method has also proven to be insensitive to changes in bulk density, since the mass of the material to be measured can also be recorded using the resonance method and the calculation of the percentage of moisture can be included.
  • a calibration sample can be entered into the measuring device and the device can be designed for self-calibration by means of appropriate electronic evaluation and computing means.
  • the standard method for flour control namely the direct comparison of a sample with a sample from the production process can now be used analogously for the measurement of moisture.
  • a pattern for reading in the calibration values is entered, on which the entire production is then based.
  • the percentage water content of the grain is preferably determined twice using the same device, namely before and after wetting, preferably using the NMR or NIR method.
  • the same device namely before and after wetting
  • dry grains are conveyed through the measuring device for a few seconds without water.
  • the water addition is calculated, adjusted and a few seconds later the wetting is checked in the same way.
  • the solution according to the invention also includes that a further partial flow can be derived from the first partial flow and the measurement sample is then taken from this.
  • the further partial flow is preferably formed from the backflow section of the partial flow immediately preceding it. This principle can be continued when further partial flows are formed.
  • the further partial flow taken from a partial flow contains only the smallest quantities of bulk material
  • the further partial flow is fed to a mixer, mixed there and the measurement sample "is taken from the partial flow homogenized thereby.
  • This measuring method makes it possible to extract the smallest quantities of bulk material over a long period of time Bulk material flow or a preceding partial flow continuously and then in the mixer to produce a representative cross-section of the bulk material flow and its possible fluctuations in time, including different particle occupations during the time Mixer can be controlled to the measuring device.
  • the first partial flow is preferably also taken from the bulk material flow in a storage area, preferably according to the overflow principle.
  • the bulk material stream for forming the first partial stream and the remaining bulk material stream hereinafter also called the main stream, is preferably referred to the loading led the first part of the stream.
  • the bulk material flow fraction, ie the main flow not taken up by the first partial flow overflows, so to speak, from the vessel or the area of the first partial flow.
  • a flow scale based on the Buhler principle is preferably used to form one or more or even all of the partial flows.
  • the backflow for partial flow formation can also be carried out with this balance.
  • the throughput of the partial stream or streams is also recorded with it.
  • Such a scale is described, for example, in European patent applications 84 111 967.0; 86 902 385.3 and 86 901 871. To avoid repetition, we hereby expressly refer to the content of the European patent applications.
  • the formation and the backflow of the partial flow or flows on the one hand and its flow rate detection on the other hand is preferably carried out at least partially simultaneously; preferably synchronous and continuous.
  • the partial flow or flows are continuously formed and backed up by means of the balance and the throughput of the partial flows is determined in batch operation.
  • the invention also encompasses a method for monitoring the production of foodstuffs, preferably from cereals, in which the material parameters for food production are determined at process-critical points, and material parameters determined in this way are prepared for simultaneous display and comparison with a setpoint value scheme.
  • Fig. 2 a double application of power division in traffic jams
  • FIG. 3 schematically shows a device according to the invention for flour-like goods
  • FIG. 4 shows a section I-I of FIG. 3
  • Fig. 5 shows an embodiment of an application of the invention in the acceptance control for silo delivery
  • Fig. 6 shows an example of the course of measured values of air-dry wheat
  • FIG. 8 shows an application of the invention as a delivery control for the mill delivery and for controlling the wetting of flour-like goods
  • Fig. 9 shows the application of the invention for the control of the wetting for the whole grain and the control of the ingredients of the grains before grinding
  • FIG. 10 shows a further exemplary embodiment of the invention, using a mixer in one of the partial streams
  • Fig. 11 further embodiments of the invention using one and 12 sets of a continuous scale on the one hand for granular material (Fig. 11) and on the other hand for floury material (Fig. 12).
  • a device for the continuous formation of smallest measurement samples is shown schematically.
  • a bulk or product stream 1 is divided into a main stream 3 and a first partial or secondary stream 4 in the region of a first division, also called a coarse division.
  • the side stream 4 is by a Storage space 5 and via a return channel 6 back into the main stream 3, so that the product stream 1 can be continued again after the main stream and the secondary stream have been combined.
  • the proposed solution has the particular advantage that regardless of the current throughput of the product stream 1 there is always an approximately constant ratio between the current throughput of main stream 3 and secondary stream 4.
  • a damming valve 7 which specifies a cross section "X" through which the entire bulk material flow must flow.
  • the main stream 3 is passed through a level control path 8, in which an electro-capacitive level measuring plate 9 is arranged in time and, depending on the setting, for. B. is constantly maintained about a level line 10.
  • the baffle valve 7 releases a certain cross section "X" so that the level control path 8 does not empty, but always remains filled up to the level line 10.
  • the corresponding electrical signal is processed via electronics 11 with an electropneumatic converter 12 and used as an actuating signal via a membrane 13 for setting the baffle slide 7.
  • the fine flow divider in order to achieve a percentage relationship between the main and secondary flow, the fine flow divider, as can be seen in FIG. 2, must represent an essentially identical repetition of the coarse flow divider 2.
  • a sample collector 30 is arranged in the storage space 5. The ratio of the flow rate in the storage space 5 and the P-robes collector 30 is determined by double stowage of the product flow on the one hand and a narrowing of the cross section 31 from the sample collector 30 on the other hand.
  • FIG. 1 further shows how the fine flow divider 14 is formed by a screw discharge driven by an electric motor 15.
  • the measurement sample is fed via a test channel 16 to a measuring device 17. It is indicated in broken lines how the measurement samples can be fed back into the product stream 1 either directly into the measuring device 17 or via an overflow 18 and a connecting line 18 '.
  • FIGS. 3 and 4 Another possibility for taking samples is shown in FIGS. 3 and 4 (in cross section).
  • a shell 102 in which a conveyor screw 103 is arranged, leads across and in the middle through the main power shaft 3 in its upper half. Shortly after the exit from the main power shaft 3 in the direction of an NMR measuring device 6, the screw conveyor tapers to a closed channel, which means less Bulk goods, when received in the open tray 102, are transported further.
  • the screw conveyor 103 is driven by a motor 104, which is connected to the NMR measuring device 6 via control electronics 105.
  • the NMR measuring device has the structure known per se.
  • a magnetic field 108 which includes a measuring channel 110, is formed between two opposing magnets 107.
  • the measuring channel 110 is connected directly to the bowl 102 by a transition piece 109, so that the flour collecting in the bowl 102 is conveyed through the transition piece by means of the screw conveyor 103
  • the tray 102 continuously fills with the falling product stream.
  • the product is compressed by the screw conveyor 103 in the measuring channel 110.
  • the signal curve shown was generated with a pulse sequence of 90 degrees to 180 degrees.
  • the signals S 1 to S 4 are sampled at the appropriate times. These provide the following information:
  • the constant a, b must be determined with a calibration depending on the product.
  • FIG. 7 shows the measurement of the moisture of freshly wetted wheat with the aid of the pulsed magnetic resonance (NMR).
  • the proportion of water in the product can be determined by appropriately linking these signals.
  • the constants depend on the product and must be determined in a calibration.
  • Fig. 5 shows the grain acceptance.
  • the grain is weighed continuously via a supply conveyor 130 into a receiving scale 131.
  • a by-pass line 112 which is guided parallel to the balance 131, the test sample is passed through an NMR measuring device, for example according to FIGS. 3 and 4.
  • the determined values are transferred simultaneously with the measured values of the balance 131 to a central computer 132 via signal lines 133.
  • B. passed over a rough cleaning 135 or a drying 136 and then stored by means of a conveyor 137 in the storage cell 38 ... 42 provided for the special grain.
  • Flour and / or semolina are each stored in the storage cells 50 ... 53 corresponding to the quality.
  • it is passed via an NMR measuring device 6 according to FIGS. 3 or 5, which is arranged in a by-pass line 112 parallel to a balance 131.
  • the NMR measuring device is used as an online control of the contents of the finished products.
  • several types of flour or flours with different proteins and / or water content in a mixer 54 and again the weight and the various ingredients can also be determined in the on-line measuring method by means of the NMR measuring device 6.
  • Another possibility is to moisten the flour for a certain water content.
  • the product is fed into a network screw 55 with metered addition of water 56, then sieved and again closed back to the scale 131 and passed through the NMR measuring device 6.
  • the NMR measuring device 6 works here as an actual value detector for the water content of the flour or for the corresponding control of the water addition 56 for wetting to a predetermined setpoint.
  • the grain is stored in raw fruit cells 60, 61, 62, 63 etc. depending on the quality and type of grain. All values measured from the raw material are stored in a computer 132.
  • the mixture desired for grinding is put together on the computer 132 and drawn off from the raw fruit cells 60... To 63 etc. by metering units 64 and fed into a cleaning unit 66 via a conveyor 65.
  • the mixture is detected by a balance 131 and the various constituents of the mixture are measured by the NMR measuring device 6 and, if necessary, corrections are made to the proportions of the individual components by means of the metering units 64 in order to ensure a specific mixture desired for the grinding.
  • the cleaned mixture is passed via a further conveyor 67 via a network device 55.
  • an NMR measuring device 6 which detects the water content of the mixture and controls the addition of the network water (for example 3 to 4%) to a certain preselected setpoint. It is the main wetting.
  • the wetted grain is stored in standing boxes 68 to 71.
  • the moistened grain is fed to a second wetting 74 via metering devices 72 and a transport pneumatics 73.
  • only a quantity of water e.g. B. 0.1 to 0.2% added.
  • the mixture which is now ready for grinding is weighed again as the mill input (before B 1 ) and as a control the Ingredients, especially the exact amount of water measured in the grain.
  • the measured values can be used for a further correction of the previous work steps or for controlling the grinding.
  • the NMR measuring device 6 it is possible to use the NMR measuring device 6 only at one point in the entire mill diagram. The economically optimal use, however, can be seen at least for the main wetting, in front of the stand-up boxes 68 to 71 etc. and for checking the finished flour according to FIG. 9.
  • the third most important measuring point, the incoming mill check before B must also be carried out using the NMR measurement method. The remaining measuring inserts are more a question of the degree of automation that should be sought in a mill.
  • FIG. 10 shows a further exemplary embodiment of the invention, which essentially corresponds to the exemplary embodiment described in FIG. 1. In this regard, reference is made to FIG. 1.
  • This exemplary embodiment is particularly suitable for the case in which a very small proportion of bulk goods is to be continuously withdrawn from the storage space 5 over a comparatively long period of time.
  • the mixer room serves as a store in which the material supplied is homogenized.
  • the material homogenized in the mixer space is conveyed into the conveying line 16 leading to the measuring device 17 by means of a further positive conveyor 72, for example, again a check.
  • the positive conveyor 72 is driven by a drive motor AM.
  • the positive conveyor is used for a controlled discharge of the homogenized bulk part from the mixer 70. This can prevent the mixer 70 from running empty.
  • the bulk material is first fed into the conveyor scale 75, which works according to the Buhler principle.
  • the conveyor scale 75 works according to the Buhler principle.
  • Such a continuous scale is described, for example, in the EP applications mentioned at the beginning.
  • the flow scale 75 is supported with its supports 75 electronic weight detection elements. It is arranged to be movable relative to the supply and discharge lines by means of sleeves 80, 81. Via a measurement value processing circuit connected downstream of the electronic weight detection means, the slide device 78 is set in such a way that a constant level of the conveyor scale 75 is set.
  • the discharge from the measuring device 17 and thus the speed of the measuring sample is set by the measuring device 17 to a constant value and held there by means of a screw conveyor 76 connected downstream of the measuring device 17.
  • the ratio of the quantity of bulk material that is discharged from the positive conveyor 76 to the quantity of bulk material that is supplied to the storage space 5 determines the quantity of bulk material that is supplied to the main stream via the bypass channel 6.
  • This embodiment has made it possible to simultaneously detect the throughput of the bulk material flow 1 and the parameters of this bulk material flow.
  • the flow scales are used to divide the current according to the overflow principle in the area of the flow divider 2.
  • the flow scales based on the Buhler principle ensure that a mass flow - in contrast to the core flow - moves through them. This means that the particles of the bulk material flow have practically no relative velocity to one another, or at least a negligible relative velocity. This avoids the undesired segregation effects.
  • FIG. 12 corresponds to the exemplary embodiment according to FIG. 11 for floury material.
  • the floury material is conveyed out of the storage space of the conveyor scale 75 by means of a positive conveyor 90.
  • the positive conveyor 90 is connected to the storage space 5 via a bellows 92.
  • the line 16 leads from the storage space 5 to the measuring device 17, from which the positive conveyor 76 conveys the measuring sample back into the main stream.
  • the continuous scale 75 operates in batch mode, the following change in the exemplary embodiment shown in FIG. 12 is preferably provided.
  • the bellows 92 is omitted. Instead, the measuring device 17 directly adjoins the positive conveyor 90.
  • the measuring device 70 is then connected to the discharge tube of the measuring device via a bellows. The latter opens into the main stream below the flow scale 75.
  • sample from the sample is also observed in this exemplary embodiment.
  • the measuring or the first partial flow is formed by the bulk material stowed over time in the closed flow weigher.
  • the forced conveyor 90 now conveys a partial flow from the jammed measuring flow, the measuring sample into the measuring device.
  • Priority number 4290 / 86-3 (European patent), FR (European patent), (European patent), HU, IT (European patent
  • At least one first partial flow is derived from the flow of bulk materials and at least this partial flow is reunited with the flow of bulk materials, the first partial flow or a further partial flow derived from the first is at least temporarily dammed, a small percentage of the dammed partial flow is at least in part continuously extracted as measurement sample and this measurement sample is then conveyed through a measuring device, preferably by NMR or NIR, to determine the characteristic values of the material.
  • Method and device for forming measurement samples from a bulk material flow, in particular from food and feed for the purpose of determining one or more material parameters such as protein content, moisture, color, ash, granulation etc., at least one first partial flow being derived from the bulk material flow and at least this partial flow is reunited with the bulk material flow, the first partial flow or a further partial flow derived from it is backed up at least temporarily, a small percentage of the backed up partial flow is at least partially continuously taken as a measurement sample and this measurement sample is then used to determine the material parameters by a measuring device, preferably for NMR or NIR is performed.
  • a measuring device preferably for NMR or NIR is performed.

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Medicinal Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Un procédé et un dispositif sont utilisés pour prélever des échantillons de mesure dans un courant de matières en vrac, en particuler des denrées alimentaires et du fourrage, afin de déterminer des valeurs caractéristiques telles que la teneur en protéines, l'humidité, la couleur, les cendres, la granulation, etc. Au moins un premier courant partiel est dérivé du courant de matières en vrac et au moins ce courant partiel rejoint le courant de matières en vrac. Le premier courant partiel ou un autre courant partiel dérivé du premier est au moins temporairement endigué, un petit pourcentage du courant partiel endigué est prélevé au moins en partie en continu comme échantillon de mesure, puis cet échantillon de mesure est conduit à travers un dispositif de mesure, de préférence par résonance magnétique ou ionique nucléaire, afin de déterminer les valeurs caractéristiques des matières en vrac.
EP88900683A 1986-10-30 1987-10-30 Procede et dispositif de prelevement d'echantillons de mesure dans un courant de matieres en vrac Withdrawn EP0295290A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4290/86 1986-10-30
CH429086 1986-10-30

Publications (1)

Publication Number Publication Date
EP0295290A1 true EP0295290A1 (fr) 1988-12-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88900683A Withdrawn EP0295290A1 (fr) 1986-10-30 1987-10-30 Procede et dispositif de prelevement d'echantillons de mesure dans un courant de matieres en vrac

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Country Link
EP (1) EP0295290A1 (fr)
WO (1) WO1988003269A2 (fr)

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EP0371099A1 (fr) * 1988-04-29 1990-06-06 Bühler Ag Dispositif et procede pour saisir des parametres de produit en mode operationnel
AU623154B2 (en) * 1988-05-06 1992-05-07 Jesma-Matador A/S A method and a system for handling sample materials, e.g. in mixing plants, for central analysis of the samples
EP0416002B1 (fr) * 1988-05-06 1998-07-22 Sprout-Matador A/S Procede d'exploitation d'installations de melange ou de traitement, dans lequel des echantillons sont preleves depuis diverses sources de materiau et organe de prelevement d'echantillons destine a etre utilise avec un tel procede
JPH0650761Y2 (ja) * 1990-09-13 1994-12-21 日本アルミニウム工業株式会社 粉粒体検査装置
FR2685223A1 (fr) * 1991-12-23 1993-06-25 Framatome Sa Installation de traitement de grains vegetaux ou de graines vegetales.
FR2685222A1 (fr) * 1991-12-23 1993-06-25 Framatome Sa Procede de traitement de grains vegetaux ou de graines vegetales et produits obtenus par ce procede.
FR2754062B1 (fr) * 1996-10-02 1998-12-04 Naudi Alain Dispositif pour analyser une matiere pulverulente circulant dans un conduit
DE10201094B4 (de) * 2002-01-09 2007-04-26 Versuchs- und Lehranstalt für Brauerei in Berlin (VLB) Einzelkornanalysator und Verfahren zur Einzelkornanalyse
US7199581B2 (en) * 2003-05-16 2007-04-03 The Boc Group, Inc. Magnetic resonance measuring system determining the mass of samples in a production line with monitored drift compensation
DE102006062240B4 (de) * 2006-12-22 2008-09-04 PFAFF AQS GmbH automatische Qualitätskontrollsysteme Lösbare Kupplung
ITUA20161448A1 (it) * 2016-03-08 2017-09-08 Freeray S R L Metodo e apparato per il controllo qualita' di prodotti solidi in forma granulare o polverizzata

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EP0043137B1 (fr) * 1980-06-30 1987-01-21 Bühler AG Procédé et appareil pour la détermination continue de l'humidité de produits alimentaires granuleux
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WO1988003269A2 (fr) 1988-05-05
WO1988003269A3 (fr) 1988-07-28

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