DE2033945A1 - Method and device for determining the capacity of tankers - Google Patents

Description

.DR. ING. E. HOFFMANN · DIPL. ING. W. EITLE DR. HER. NAT. K. HOFFMANN

PATENTANWiLTE D-8000 MÖNCHEN 81 · ARAB E LlASTRASS E 4 · TELEPHONE (0811) 911087

UZINA DE UTILAJ CHIMIC "GRIVITA ROSIE", Bucharest / Romania

Procedure and equipment for determining fit of tank trucks

The present invention relates to a method ren and a device for determining the fit large container, especially for those with a dome Tank truck each volume, this space content determination is that the whole or the Part of the volume of the tanker is to be determined, which volume on the upper part of the tanker by a horizontal plane is limited, which is at the height of the upper, innerai generatrices of the cylindrical tanker body which amount is considered as the reference value.

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009887/1398

203394b

For this determination of the volume of the tanker exist international standards which were taken into account in the present invention.

The method and the device according to the invention relate in particular to the determination of the volume of tank trucks, which is usually carried out in two operations, namely the "rough determination of the capacity ¹¹ , through which this up to a height of -30 cm and the" fine or centimetric determination of the capacity "between the heights of -30 cm and zero.

Basically, that can be dealt with in this description The method and the related device are also adapted to other measurement limits and other mobile or fixed containers using the general procedure, which consists in converting water from solid, immutable To empty standard gauges into the container, the content of which is to be determined.

When determining the capacity of the tank truck, the corresponding water level regulations are also taken into account at the same time to be carried out in the tanker or the time must be determine when these heights the hosts -50 cm; - 29 cm learn and reach "zero"; furthermore are the corresponding To determine the volume of the water emptied from the standard gauges into the tank truck.

A number of methods are known for making remote measurements to carry out and display certain water levels in a container.

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'' ORiGiNAL INSPECTED

009887/1393

Of these procedures, the best known is that which for this purpose, the electrical conductivity of drinking or industrial water is used with the use of fixed, discontinuous (discrete) »electrical feelers, the Be provided in the actual container and through which a very weak alternating current is then switched on when the water reaches the sensor located at a certain height.

This method of measuring water levels with sensors of this type can, if the liquid surface Λ is not exposed to any vibrations or disturbances, achieve a measuring sensitivity of the order of a few microns.

A disadvantage of these sensors, however, is that their sensitivity is directly affected by any water waves will. Another disadvantage is that every sensor corresponds to a signal which occurs without any prior notice, in a sense by surprise, without the approximation of the time at which the corresponding Standing height is reached, is recognizable, so that then, to a certain extent in the course of development, on * a scale, at the level of the water meniscus in a ™

Standpipe., The volume of the emptied from the standard Water must be read.

To avoid this disadvantage, additional "preparatory" sensors were used, which are connected to the signaling device be connected by a special, separate conductor.

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009887/1396

If it is an electrical encoder, the cooperates with a large number of sensors, e.g. for determining the fit of rail tank cars is the case, this solution is unfavorable in that, in this case, the number of conductors of the Cable that connects the sensor to the signal system must be doubled.

There are numerous known methods for determining the capacity of a tanker, of which the fastest to be carried out is that which allows complete automation and which achieves a relationship between the measurement of the volume and that of the level, which a volumetric! * Calibration counter, e.g. those of the type with "oval edges" or those with "free piston ^11" are used.

The disadvantage of this method is that the Eichanlag®, which these standard measures for the determination of the volume of the room, also necessarily via others Verification systems must have greater accuracy periodic control of this labor code. carry out to be able to, which significantly increases the cost of the system for determining the fit.

Another 'known burn for destination of the water-holding capacity of tankers consists in the fact that in the tankers the content "of EioSimaßen determined, immutable content is completely emptied.

009887/13

203394a

For emptying in tank trucks of any smaller volume and especially for centimeter-by-centimeter Determination of the capacity of tankers are fixed cylindrical, vertical standard dimensions of small Horizontal cross-section used with the water level tube and are provided with a scale divided into volume units.

If, for the period in which the centimeter-by-centimeter determination of the capacity is carried out, a performance is waived and the water flow into the tanker is interrupted at every centimetric level, the accuracy achieved in the centimetric determination of the capacity can be compared to that of the "rough determination of the Capacity "(ie up to a standing height of -30cm, using standard gauges with complete emptying); However, if in order to achieve a high efficiency, an operation performed in the continuous operation zentrimetrische determination of the capacity is used without the measurement with the provided with standpipe Elchmaß at every centimeter to interrupt the accuracy of the measurement of partial volume substantially gerin- \ ger.

The uninterrupted centimeter-by-centimeter determination of the Capacity has three major drawbacks, all of which relate to the accuracy of determining the Capacity affect:

- upon receipt of the "reading" signal, when the observer reads the contents of the emptied from the standard Must read water, the water meniscus in the water level tube falls even further,

009887/1336

-6-

- 6 which affects the accuracy of the reading;

- when the "reading" signal is received, the emptying a certain amount of water, which is between the standard for centimeter-by-centimeter determination of the capacity and the tanker, continued, however the Method of continuous determination of the fit neglects this amount of water, which is all the more important, the greater the amount of water constant flow is when the standard is emptied;

- The water level of the water meniscus in the standpipe is only then equal to the water level at the standard if the water used to determine the capacity is at rest is located.

during the dynamic process, however, and above all if the emptying water flow rate is greater, the water meniscus from the water level tube remains behind that of the water level in the standard and causes a reading error of the water volume.

The aim of the invention is to provide a method and a device for determining the capacity of the tank truck au create which has the disadvantages listed above, both regarding the detection of the water level determining the capacity of the tank truck as also eliminate the measurement of the water that has flowed into the tanker.

009887/1396

Dleses goal is achieved by the method according to the invention, in which, especially in the centimeter-by-centimeter determination of the capacity before each signal, corresponding to the reaching of a predetermined water level when the amount of water emptied into the tank truck efo has to be read, another preparatory signal is sent, which announces that the expected predetermined water level will be reached in the next few seconds.

A device for determining the capacity of tankers consists according to the invention that it consists of a number of vessels and gauges, of which at least one is provided with a water level tube and a scale divided into volume units and of an electrical signal system for indicating that certain water levels have been reached in the standard gauges and in the tank truck on which the determination of the capacity is to be carried out, as well as two water level sensors for checking the filling of the standard gauges, for the rough determination of the capacity and for reducing the amount of water required to determine the capacity, and that further | an electrical transmitter is provided, which is provided with several sensors which are arranged at different water levels and which are each connected to a changeover switch which is to be operated by hand, the device being further characterized in that the sensors above all those which are used to determine the capacity by the centimeter, each provided with two contact surfaces, of which a smaller one is below the water level, for which the determination of the fit of the tanker is to be carried out , while the second is much larger

00988771396

Contact surface arranged in the predetermined water level is, both metallic surfaces are in direct electrical contact and through a common conductor are each connected to a contact of the electrical switch, which one after the other the signal and control device connects to each sensor of the upper ,.

At least two of the verification mafias have the same volume suitable for complete emptying and at least one standard for complete and partial emptying. Furthermore, the Qesamtanlag® also includes systems for the water supply of the standard gauges, for the emptying of the standard gauges in the tank truck, for the recovery of the water, etc.

The gauges that Signalisieranlage and the controls for the Wasserspei 's <* ungeanlag @ n are mounted on a, the railroad bridging framework that is much higher than DL® lohe on. Highest dome of the tanker, whose capacity is to be determined.

The procedure and the facility described here be, only refer to the type and Catfish, as measured by the water level in the tanker to the specific®]! Features of the construction of the probe and the methods and means of obtaining the Accuracy of the estimation of partial volumes of the water to increase the centimeter-by-centimeter determination of the capacity of the tanker from which The standard was emptied into the tanker.

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009887/1398

Jii -. i Uli sw,: ■ .... ■. ....- Ii ii

The inventive method uses a preparatory signal "Attention", which indicates that the "centimetric water level" of the elk vessel emptying water, which must be read off in imminent time will be reached.

For this purpose, each sensor on the upper surface is provided with two separate touch surfaces, of which the larger, more important one is at the height to be controlled, while the much smaller one is located under the main surface S, so that the two touch surfaces are touched one behind the other etc. with the water surface; water close in which low voltage AC currents, which are approximately equal to ratio the contact surfaces with the water an electrical circuit; consequently are in the ratio s / (s + S).

With known electrical or electronic means, these two currents can be displayed separately, or it can be displayed when the two Touch surfaces come into contact with the water, whereby the smaller, lower area triggers an additional preparation signal, which occurs before the main signal and means "attention".

The inventive method provides that the electrical sensor is not influenced by the action of the water waves in the tank truck, also provides that the giver is constantly in a particular vertical direction and position, ao that its feeler show the water reserve heights, based on a reference plan for the storage capacity of the tanker.

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009887/1398

This reference plan is best learned from international standards. For this purpose, the lower part of the encoder is in enclosed in a metallic housing »that by a The opening is connected to the exterior «whereby the Openings on the lower part of the housing are regulated in this way can be that the transmission of the water waves from the tank truck is prevented from entering the interior of the housing, the housing also being arranged on a holder which is on the upper edge of the dome which represents one of the horizontal reference plans of the water level. The holder of the encoder housing is nit provided with regulating and control devices for the vertical alignment of the sensor, furthermore nlt a leveling and control device for the position of the vertical, see above that the upper touch surface of the encoder is in the correct position in relation to the main tactile surface in the horizontal plane of the inner, upper generating line of the Tank truck body, in a manner independent of the height of the dome.

The method according to the invention provides that, at the same time as the "Attention" signal is sent, the flow rate for emptying the standard is reduced at the centimeter-level determination of the capacity is, in this way, the difference in water level in dynamic conditions between the water meniscus To reduce the water level pipe and the water level from the standard measure, furthermore to reduce the speed with which the Waasenaenlskus falls in the Waaserstmndsrohr and to temporarily reduce the water flow rate between EiohaaS and the tanker "For this purpose

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009887 / 139S " .. bad original ¹

. - ii -

is the facility for determining the capacity « the discharge line of the standard for the cent! metric Determination of the capacity, provided in parallel with a manually operated valve, furthermore with a electromagnetic - normally open valve, controlled by the relay provided in the system, for the signal "Caution" and by one at the same time as this Signal taking control.

The method corresponding to the invention also provides that the "Attention" signal is deleted simultaneously with the triggering of the "Read" signal, the movement | If the water meniscus in the water level pipe is suspended and the maximum flow rate for emptying the vessel for the cent! metric determination of the capacity is restored after the reading of the water emptied from the calibration vessel on the graduation scale and control device can be switched from the sensor, which corresponds to the achieved standing height, to the sensor of the next higher standing height, whereby the signal "reading" has to be suspended and the water meniscus has to be removed from the standing height pipe ver | see which one is to be switched between the BlohgefäS for zentiaaetrische determination of the capacity and the standing height pipe and which one is controlled by the relay provided in the system for Una ' signal "reading", at the same time bit of this signal.

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009887/1398

The following describes an embodiment of a location that the method according to this invention applies, with reference to Figures 1, 2 and 2 will represent the following:

Fig. 1 a diagram of a sensor of the electrical transmitter for the display of the tank truck water volume for the Determination of the capacity.

Fig. 2 a diagram of an electrical transmitter «attached on the cathedral of a railroad tanker.

Fig. 3 a general circuit of a system for determining the capacity of a railroad tanker, containing the hydraulic part and the signaling and control part.

A sensor of the electrical sender of the water level for the paeetmgeveri & ugenebeetiimnung 3lnee tank truck consists of © inem metalliecfae »Part 1 of stainless steel, from the POhlerkSrper, which side - from its metallic lifclfc«? 2 supported WiI ⁹ O ₃ welsher eats of sealed catfish through a drill 3!

las body 1 dee FiSilers are pre unawares A large tylindrisehe opening a, which is closed on © beren part and the lower part, closed, and © © In small lateral opening to δ for the exit of air from the mouth

if the level of the water for the determination of the capacity reaches the level of the lower flat surface S of the probe and a threaded opening c on the upper part of the probe body which is concentric is arranged to the opening a.

A pin is inserted into the threaded opening c screwed in, on the side surface of which a layer of lacquer or an electrically insulating cover is provided and in the case of the fastening position on the sensor body, the lower end 2-3 mm above the lower surface of the sensor body stands out. G

The active contact area s between pin 5 and the Water for determining the capacity is approximately 10 times when the water level in the tanker rises smaller than the area S of the contact of the sensor body with the water for the determination of the capacity.

The electrical sensor of the water level for the water when determining the capacity of the tanker consists of 36 electrical sensors 1, which at intervals of 1 cm each are attached to the holding tube 3. The giver is housed in a cylindrical, metallic housing made of stainless steel, which is mounted on a metallic casing rUst is arranged, which isfc provided with 3 arms and rests on the upper reference edge of the tank truck dome « The 36 sensors of the sensor are arranged in groups of J® 12 on 3 generator sides of the holding tube. Every feeler a tab 4 of the cable 9 is assigned, which establishes the connection with the signaling and control system.

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009 8 8 7/13 98

On the lower part the halo with a metallic one

threaded stopper 1 © made of stainless steel sealed watertight.

On the upper part, the holder is fastened with a raetellisclien Tube 11 made of stainless steel vertiagerfej, on which ent »' long a generator provided with a garbage meter Scale d plotted 1st »on dep at intervals ¥ © a J @ 10 graduation marks Numbers are given «which © the khen of the domes indicate the tanker for which. the Besfelmiranig äes capacity is carried out.

The cylindrical Getitas © is on the other rope with openings e with adjustable Q.nQfselssiifet ν © 3? © © Μ © η * <iur @ k that there »water when rising uee M & smQWstmhüe ^ - ie Tantefagesa enters the housing.

In the upper part stands the eyelet Yevbinavn ^ with that of the tanker wagons that are represented by the u ££ mmgm ©

lit der feiiigSa.§ig@a SS ^ teaÄ © 12 m & ü iaife © ines »Biocide rungsvorrichtimg kana © in © iFertilssl © lisssfeoll-wig ü®s Gebers VQrgenonnen

Bas Gehluse of the Seteer Irans ia the VQ ^ tiEmlen with cover on its holder 7 ©! © placed v®Tä®n _g w®i? Ai3! F that with the BlocicieriMigssctoraMbe 12 gesieberfe

The holder 7 is S te di © Hegelmsg Ib ö @ i ° level on a long ta »marked with sf © i, wMnrend fir di® Eonteoll © d

009887 / 13S ©

of the holder or a spirit level is provided for checking the vertical alignment of the encoder.

The holder is provided with a pointer 16 of the dome height, which slides along the millinetric scale d when the fine-thread screw 12 is actuated.

The transmitter, his holder, the pointer and the graduated scale, from 10 to 10 graduation marks old Numbers that indicate the height of the dome are so j coordinated that with such a scheme of the encoder in its housing, the pointer 16 assumes a position that corresponds to the actual height H of the tanker truck, for which the determination of the capacity is to be carried out. If, according to this rule, the giver receives a has a vertical position on the dome of the corresponding tanker truck, the sensor "zero" of the sensor is at the height of the inner, higher generating line of the tanker body, which according to international standards is the reference height represents the water level when determining the capacity of the tanker.

The standard measures 17 for the rough determination of the frame | However, assets that work on the same principle as the sensors for the sender for the tanker water level are only intended for the filling of these vessels Notify the operator so that he can prevents further inflow of water into these vessels, when the overflow level 19 has been reached.

The hydraulic part of the system for * determination * of the capacity consists of two standard measures, for complete emptying (G X and G II), of one standard measure,

SO θ * -8T / 13 98V _ßÄD

_ ₁₆ _ 203394S

for complete and partial emptying 20, provided with a water level tube 21, furthermore from a scale 22 provided with liter graduation.

The lines 25, 24, 25, which are equipped with taps 26, 27, 28.

The emptying of the elk measures for the rough determination the capacity is done using manually operated and manually controlled valves 29, while for the Emptying of the standard 20 two valves 30 and 31 connected in series are provided, furthermore © in normally open, Electromagnetic valve 32 mounted parallel to valve 30.

As far as the flow rate is concerned, the emptying of the standard 20 can be carried out in two operating modes. Either r <S © HochstdiweftifluiBtenge which is controlled with the main valve 31, with valves 30 and 32 are open "or indeed" Ischen ä @ n successive signals "reading" and "Caution ¹¹¹ with reduced Durchfluimenge, DI® through the valve 30 is regulated, the valve 32 being closed.

The maximum flow rate for emptying the standard in the fine determination of the capacity is used when the efficiency of the system is to be increased. The valve 32 becomes automatic closed when the signal "Attention" is sent by the signaling and switching system in order to enable measurement and to reduce reading errors, which in dynamic operation when emptying the standard 20 with greater Flow rates could occur ..

BATH ORlGMAL

009887/1398

The standard 20 stands with its water level tube 21 in Connection and by using an electromagnetic, normally open valve 33, which is automatic at the Transmission of the "Read" signal through the signaling and switchgear is closed to the movement of the water meniscus to prevent and in this way to enable an accurate reading of the volume of water that empties from the elk measure although the emptying of standard 20 is continued.

The automatic signaling and control device exists from a single-phase feed transformer 34, with two secondary voltages of 12 and 24 V, with their common terminal being earthed.

In the secondary 24 V circuit of transformer 34 is the AC part of a rectifier 35 and a changeover switch 36 is switched on, which makes it possible that this secondary circuit through each of the sensors of the electrical transmitter, which is attached to the tank truck dome can be closed, but only when the water level in the tanker has reached or exceeded this sensor. (|

In the direct current part of the rectifier 35, the system is provided with two electromagnetic relays A and B, the excitation coils of which are connected in series. Relay A with the normally open contacts a. ^ And a _g has an action threshold of 2 ... 3 mA, while the relay B with the normally open contacts b _x and b ₂ and the normally closed contact b, an action threshold of 20 .., has 30 mA.

-18- 009887/1398

203394S

If the water in the tanker only touches the tip of the sensor on which the switch 36 is located, then the AC current in the primary circuit of the rectifier 35 a Value in the order of 5 mA.

The secondary direct current is of the same order of magnitude, relay B does not respond to this current, but relay A closes the contact, which at this point causes the 12 V alternating current to be supplied to a signaling device, this device optionally being an optical 37 or an acoustic 33 Can be device, the signals of which mean "attention", the contact a _g from the secondary circuit of the rectifier 39 is closed, which is also the, closing ds "contact e", the supply of the rectifier 40 and then the closing of the electromagnetic, normal open valve 32 is effected in this way the flow rate until the emptying of the standard 20 in the ssentimetric capacity determination is reduced from the maximum value to the minimum value, both values being set beforehand in a suitable manner.

When the water in the tanker reaches the large line of the sensor on which the switch 36 is arranged, The alternating current has the in the primary circuit of the rectifier 35 flows, a value in the order of 50 mA «,

Now the relay B begins to work, whereby

a) the normally open contact bj closes and the optical 41 or acoustic 42 signaling device reacts to this Way with 12 V alternating current, the signals of which differ from those of the device 37 as a tone color or signal color and 38 differentiate, where both signals mean the command "read"}

-19-009887 / 1396

b) the normally open contact bg closes and thereby The rectifier 43 feeds with 12 V alternating current the electromagnetic valve 33 is actuated and the connection between the gauge 20 and its standpipe interrupts, so that in this way the water meniatkus remains immobile in the water level pipe, which is a correct® Reading of the emptied water volume favors until Time at which the "reading" signal begins;

c) the normally closed contact b, opens what g the cessation of the "Attention" signal caused by the devices 37 and 38 also causes the sub « interruption of the supply of the rectifier 39 and then of the rectifier 40 and also the restoration of the maximum drainage flow rate of the elk size 20 in order to achieve a satisfactory performance of the capacity determination device in this way to maintain.

Upon receipt of the signal "reading" is read off the quantity of water on the provided with graduation scale which was evacuated until reaching the stand height K, and in which the switch 1st set 36, this ä reading is added to the calibration table

• ■ -

to work out, whereupon the switch immediately is brought to the Koriakt, which corresponds to the next higher sensor K-I.

After this switchover, this is done by the devices 4l and 42 caused signal "reading" set and the water meniscus in the standpipe 21 is released again, while the signal and control device is now is prepared, the same sequence of signals and actuations for the next following sensor to begin.

. ■■ '■ .-, \ -20-

009887 / 1396-

203394S

The method according to the invention and the device for determining the capacity of the tanker truck has the following advantages

a) Before the signals for reaching the water level

in the tank truck, especially in the. centimeter wise pass-

sungs Vermögensbestlmraiög, others will be preparatory Signals transmitted to ensure the accuracy of reading the from the To achieve the standard of emptied water in the course of the measurements;

b) The electrical transmitter for the entire range ά @ τ determination of the fit, based on the reference plan established by international standards, is used as a yardstick for the unsteady measurement of the water level in the tanker

c) 'This encoder, which can easily be fitted differently, points to a
provided with a graduation scale, the Domfeöh © in _a for the IGT set of donors wofeel d @ r Geb © r Eieht is influenced by the Einwirtoung of any existing Tanker waves;

d) Just before reaching jed®? Uag® © rsfcandgSi3h © _a for before the centimeter-by-centimeter inspection of the barrel is to be carried out, the oil emptying amount of the standard is temporarily reduced from a maximum to a smaller value > whereby © i soon © values are set beforehand, whereby, furthermore, due to this reduction the flow rate the level difference, in dynamic operation, between the water meniscus in the water level tube and the water level

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009887/1398

is reduced in standard «whereby finally the Speed with which the meniscus in the water level pipe falls, is reduced and the amount of water between the standard and the tanker at the time of reading the amount of water emptied from the standard is reduced.

0098 87/13 96 -22-

Claims (1)

Claims r \ LIJ procedure for determining the capacity of Tank truck, by emptying into this © tank truck of previously measured amounts of water, by scanning the water surface and through the electrical signaling of reaching certain waasepstand heights in the tanker, below Use of the electrical conductivity of the signalisie Circulation circuit contained mass uni by switching the signaling and control device from the the sensor located at the next higher level Stand height corresponding Füü3Lei% whereby entering the next higher standing height is expected, characterized in that especially in the centimeter-wise Determination of the capacity in front of each signal according to the reaching of a predetermined water level, if the amount of water emptied into the tanker needs to be read, another preparatory one Signal is sent, which announces that the expected predetermined water level in the next few seconds will be achieved. m 2. A method for determining the capacity of tankers according to claim 1, characterized in that at the time when the water for the determination of the capacity in the tanker reaches one of the cent! metric standing heights for which the partial capacity of the tanker must be known , an optical or acoustic signal (of your choice) with the content "read" follows, whereupon the amount of water emptied from the calibration vessel for the centimetric determination of the capacity must be read on the graduated scale, the signal "attention" stops and in the water level glass the calibration vessel of the water and the water for the determination of the capacity no longer changes, 009 887/1398 ""^2> whereupon a correct Reading of the emptied water can be made »although the emptying of the standard for centimetric Determination of the capacity is continued and the flow rate with which this standard continues to empty is brought back to the maximum value in order to increase the productivity of the process for the determination of the Increase capacity. of tankers I J3. Device for determining the capacity according to a method according to claim!, thereby ge ke η η ze i without knowing that they consist of a number of vessels and standard gauges (17, 20), of which at least one (20) with a water level pipe (21) and a scale divided into volume units 1st, are from an electrical signaling system for display of reaching certain water levels in the Standard gauges (17) and in the tanker on which the determination of the capacity is to be carried out »as well as from two water level sensors (18) for checking the filling the standard measures, for the "rough" determination of the capacity and for the reduction of the load | Mood of the capacity required amount of water, and that an electrical transmitter (3) is also provided, which is provided with several sensors (l), which at different water levels are arranged and which are each connected to a changeover switch (36), which of Can be operated by hand, with the sensors, especially those used to determine the capacity centimeter by centimeter, each provided with two contact surfaces of which a smaller one (s) is below the water level for which the determination of the capacity -24- 009887/1396 Ability of the tanker is to be carried out, while the second much larger contact surface (S) in the predetermined Water level is arranged, with both, metallic surfaces are in direct electrical contact and, through a common conductor (4), each have a contact of the electrical switch are connected, which one after the other the signal and Control device attached to each sensor of the encoder » 4. Device for determining the capacity® of tank truck according to claim 3, in which the electric The transmitter of the water level is protected from the effects of the water waves from the tank truck by a housing, characterized by the fact that the cross-section the openings in the lower part of the housing (e) is controllable for communication with the environment, one of which also provided with a blocking device® The screw (12) enables the position of the 6eFb © rs in the housing to be determined, furthermore the housing at · ®in @ m Holder (7) is attached, which is supported by the edge of the dome and the holder screw (14) with a spirit level "(15) and with a Pointer (16) is provided in the The pointer slides in front of the common screw (12) with millimeter graduation (d), which is on the © b © reE part of the giver, which from the is where the on this attached digits such the specify where the BestJ it is to be carried out that if (K) the constant © » difference between the horizontal support tan © housing holder and the height of the pointer on the rait graduation, indicating and when the pointer is in the (H) designated position is brought, dam the heights «nt @ r- "25" 009887/1398 2033946 , - 25 - differentiated between the character (H) and the main sensor surface of the "zero sensor" of the Oeberg is equal to (K + H). 5. Device for the determination of the capacity of tankers according to claim 3 * thereby g β ke η η draws net «that for the" rough "determination of the capacity with large standards and with complete emptying and when determining the capacity with small standard, provided with Water level tube and with graduated scales for complete - \ and partial emptying, the transmitter is provided with m + n + 1 sensors at intervals of one centimeter each so that when the water level is approached - η cm on the fine Prepare to determine the capacity, whereby m sensors on the lower part of the sensor can only have a single scanning surface, while n + 1 sensors on the upper part of the transmitter are each provided with two scanning surfaces, the number m of sensors depending on the capacity per centimeter of height , at a height of -n cm, for the smallest tanker whose capacity is to be determined, as well as in dep Dependency of the capacity of the large standard «, for complete emptying (17) is determined while the | Value η is selected either according to the operational requirements of the tanker or according to the relevant standards. 6. Device for determining the capacity of tankers according to claim 3> thereby g e k e η η draw t that the device for advance notice and the signaling that the water level has been reached in the vessels for the "rough" determination of the Capacity (17) and in the tanker, as well as the control and actuating devices with an electrical, 009887/1396 ~ ²⁶ " single-phase voltage-reducing and isolating transformer (34) are provided, which has two low-voltage 12 and 24 V "whose common terminal is grounded, while in the 24 V circuit the system is provided with a bridge circuit rectifier (35)" in series with the runner of a changeover switch (36), with which the signal, control and actuation device can be manually switched either to a transmitter (18) at the water level of the calibration gauges (17) or to one of the sensors of the transmitter (3 ) on the tank truck !, while a bridge-holding system (35) _{feeds the excitation coils of two relays (A 1} B), the first of which has an operating threshold of 2-3 mA, and the second of 20-30 mA, and furthermore the © rst® relay (A) is provided with a normally open contact (a *), which monitors the supply of an optical (37) or acoustic signal device, whereby the choice of these devices is made at discretion, whereby both R elais are intended for the "Attention" signal and the relay is also provided with a second normally open contact (ag), which monitors the supply of a power section! ) connected lot and bit 12 V alternating current speiet the power relay (C) «whereby the power relay (C) through its nonial open contact Cc ₁ ) di @ supply of a bridge rectifier ( ¹ K)) monitors a parallel connected normally open electromagnetic Valve (32) feeds, this device, if one of the transmitters (18) or the sensor "dos transmitter (3)" on which the switch (36) is arranged "" it the water for determining the capacity only with the small sensing area (5), then the first relay (A) remains active and consequently an optical (37) or acoustic (38) device switches the signal "Attention" in parallel it, wae with the main valve open - 009887/13 9.8 centimetric determination of the capacity the Flow rate with which the corresponding standard (20) is emptied into the tank truck, of a maximum value is reduced to a smaller value, these two values being selected and regulated beforehand. 7. Device for determining the capacity of tank trucks according to claims 3 and 6 accordingly a method according to claim 2, characterized ge kenn ζ e 1 c h η e t that the device for reporting the Water levels in the vessels for the "rough" determination | capacity and in the tanker, as well as the Control and actuation devices in addition to the structural components specified in claim 5, nor are provided with a normally open contact (b ^), which monitors the supply of an optical (41) or acoustic (42) device (horn) for the filling the standard dimensions for the "rough" determination of the capacity when the switch (3 * 6) is in the position of one of the sensors (18) of the calibration vessels (17) is brought * or when one of the centimetric standing heights is reached in the tank truck, at which the "rough" determination the capacity is completed, to which Purpose the sensors -54 cm ... - 30 cm are used, " or for performing the "fine" determination of the Capacity for what purpose the sensors -30 cm ... 0 cm are used, in all of these cases the touch of the for the determination of the capacity used water with the large area S one of the main sensors causes the signal "reading" and further the devices still with another normally open Contact (b «) are provided, which feeds a Bridge rectifier (43) monitors which rectifier is a normally open electromagnetic valve (33) -28- 0 098 87/13 96 ■ - 28 - feeds, which closes and thereby brings the water meniscus in the water level tube of the gauge (20) connected to it to a standstill, although Assen emptying is continued, but only if the main valve (31) is open, ie only for the duration of the "fine""Determination of the capacity, furthermore a normally closed contact (b,) is provided, the opening of which causes the supply of a bridge (40) and consequently, if the main valve (31) is open, also the opening the parallel-connected eletetroiiagnetischen valve (32) causes bzw.die restoring Entleerungsdurchflußmenge the calibration vessel (20) _B wihrend simultaneously the opening of a contact (fo) and the adjustment of the signal ( "Attention" result has "welshes signal from the device ( 37) or (38) causes 8. Device for determining the capacity characterized by tank trucks according to claims J., elaborate determination of the capacity on the graduated scale of the
Determination of the capacity the water was read, d @ i
which the reading took place »
Sensor is switched «whereby
(A, B) in the 24 V circuit ends vmä consequently the corresponding contacts (a _{1 #} agj »b _{1 #} b _gP Cj] in contact (b.,) Are closed and given by the optical (41) or acoustic The "reading" signal stops and an electromagnetic valve (33) opens, releasing the water volume from the standpipe (21), which meniscus now drops and follows the water level of the gauge (20) connected to the standpipe (21). 009887/1396