DE4036262A1 - Electrical measuring appts. for level of conductive liq. - uses measuring sensor and evaluating circuit for continuous measurement of level in container or other mechanical data - Google Patents

Abstract

The liq. (2) in the container (1) to be measured is pref. normally electrically conductive water. At least one measuring sensor (3) is used with an evaluating circuit. The or each sensor is a dispersive field type with two measuring electrodes (6a,6b) at a set distance apart in the same plane. Pref., the container and teh liq. are part of the measuring arrangement. Alternatively, the electrodes can be in different planes, pref. at an angle to each other. At least one electrode is on the base (5) of the container. The sensor(s) can be produced in planar technique on a substrate. Pref., the evaluating circuit has a microprocessor or is integrated in one.

Description

The invention relates to an electrical measuring arrangement according to the preamble of claim 1. In particular, as a liquid within the scope of this teaching Normally conductive water is meant, but of course everyone can other conductive liquids are addressed here.

The known electrical measuring arrangement, from which the invention is based, serves only the level measurement of a liquid in a container. This is on the wall of the container arranged a measuring head, the location of a particular corresponds to the fill level of the liquid in the container. Reaches the liquid speed this measuring head, an output signal is emitted by the measuring sensor ben that from the evaluation circuit as "reaching the level" is evaluated. The measuring sensor is mostly as a capacitive, be proximity switch operated without contact. But it can also act as a measuring sensor with two measuring electrodes that are connected by the elec trically conductive liquid are then bridged works.

In any case, the following applies to electrical measuring arrangements for measurement or calculation tion of the level of a liquid in a container that before reaching the certain level the measuring sensor in the liquid is not immersed and that reaching the level at the same time reaching the measuring sensor means.

The previously discussed electrical measuring arrangement for measuring the level allows only discrete level measurements. Correspondingly other mechanical Data of the liquid in a container, for example its Volumes are therefore only discreet, i.e. measurable for certain fixed points or predictable. Ultimately, this data in turn comes from the measurement of the level derived by a certain level at known Geometry of the container to a certain volume of the liquid in the loading container can be converted.  

The previously described, known from practice electrical measuring arrangement has proven itself in principle, but suffers from the disadvantage of discrete measurements solution. It would also be beneficial to take more extensive measurements can.

The invention is therefore based on the object of an electrical Specify measuring arrangement for corresponding measuring tasks that a continuous measurement of the level and as much mechanical data as possible leaves.

The task outlined above is for an electrical measuring arrangement the preamble of claim 1 by the features of the characterizing part solved by claim 1. Stray field sensors have long been for Measurement of the electrolytic conductivity of a liquid known (cf. "measure + check / automatic" October 1976, 554, 563). For theory and measurement technology with stray field sensors is therefore based on the aforementioned specialist literature referred to. It is essential that a measurement designed as a stray field sensor sensor can also have four or six measuring electrodes if one takes into account that it is expedient for metrological reasons, the current separate electrodes from voltage electrodes for potential measurement. As a result, polarization effects are present on the current-carrying electrodes outside the actual measuring section with the voltage electrodes.

According to the invention, a stray field sensor is used atypically, namely last Lich for volume measurement over the measuring electrodes. The stray field is formed thereby spherical or bell-shaped in the liquid above the measuring electrodes out. The measured electrical conductivity is directly dependent on Volume of the liquid above the stray field sensor, with the same specific conductivity of the liquid can be a certain ge measured conductivity easily into a certain liquid level Convert in the container, if you consider the geometry of the container and the son known parameters of the measuring arrangement. Is the conductivity of the rivers If the liquid is not known or fluctuates, a correction can be made  Separate stray field sensor used as a - normal - conductivity sensor to enable standardization.

It is essential that the container and liquid itself according to the invention can form part of the measuring arrangement. In this preferred variant the lesson is only the liquid in the electrical measuring arrangement Means to an end, d. H. their level is only an indication of another mechanical date that results in the determined liquid level Has. So the inclination of the container can be designed accordingly measure the electrical measuring arrangement, but it can also be a lot measure the number of other mechanical influences. This is going to explained in detail in the subordinate claims.

It is preferred that the measuring electrodes lie essentially in one plane. When measuring the level of a liquid in a container, this is Level expediently the bottom of the container, the measuring electrodes would then be so arranged at the bottom of the container. Different levels of measuring electrodes troden complicate the evaluation. But you can sometimes make yourself out of others Reasons to be recommended so that it can also be useful to arrange the measuring electrodes at an angle to one another, for example a measuring electrode trode on the bottom of the container and a measuring electrode on a wall of the loading halters.

In principle, it would also be possible to have two or more in one container Arrange measuring sensors with two measuring electrodes or three measuring electrodes NEN, for example a measuring sensor on the floor and a measuring sensor on the wall at right angles to it. Then with inclinations of over 45 ° one could Switch the measuring sensor to the other measuring sensor. With one on all walls container with measuring sensors could be a rotation of the container in any direction by switching from one measuring sensor to the other measure the measuring sensor.  

There are now many ways of embodying the teaching of the invention ten and further, for which to the subordinate to claim 1 sayings may be referred. Find in the subordinate claims special embodiments for determining the position of a moving body in an electrically conductive liquid. In the subordinate Neten claims are also various inventive for themselves Uses of an electrical measuring arrangement of the type described ben, but should not be a final list.

In the following the invention is based on an exemplary embodiment only le illustrative drawing explained in more detail. In the drawing shows

Fig. 1 shows a schematic representation of a container having therein befind Licher liquid and a corresponding measuring device,

Fig. 2 shows a particularly preferred embodiment of a measuring sensor according to the invention,

Fig. 3 in regard to the corresponding representation Fig. 1 Dar a modified position for a tilt measurement erfindungsge Permitted measuring arrangement,

Fig. 4, the measuring arrangement of Fig. 3 with inclined container,

Fig. 5, the measuring arrangement of Fig. 3 different levels with inclined in the other direction of the container, a somewhat different arrangement of the measuring electrodes and a representation of the influence levels of the liquid for the measurement accuracy,

Fig. 6 in plan view a substrate of an executed in planar measuring arrangement with four measuring sensors,

Fig. 7, the measuring arrangement of Fig. 6, in a schematic view with the associated evaluation circuit

Fig. 8 is a schematic diagram of an electrical measuring arrangement for determining the position of a movable body in an elec trically conductive liquid,

Fig. 9 in Fig. 8 corresponding representation, the measuring arrangement with the movable body in the other position,

Fig. 10 shows a further embodiment of a corresponding electrical measuring arrangement rule,

Fig. 11 in a corresponding in principle to FIG. 5 illustration, a guidance from, for example with a dividing wall in the container,

Fig. 12 in a corresponding in principle to FIG. 5 illustration, a guidance from, for example with an auxiliary liquid through the liquid,

Fig. 13 shows a container completely filled with liquid and the auxiliary liquid in a Fig. 12 corresponding representation,

Fig. 14 is a further embodiment of an inventive Messan order, here in combination with a deformation element for the inclination measurement,

Fig. 15 an embodiment of a measuring arrangement for linear Accelerat nigungsmessung,

Fig. 16, the arrangement of the measuring sensors of the measuring arrangement of Fig. 15 in plan view,

Fig. 17 shows a further embodiment of an inventive Messan order suitable for rotational acceleration measurement or rotational speed measurement,

Fig. 18 in plan view, the measuring sensor of the measuring arrangement of Fig. 17,

Fig. 19 a schematic representation of another embodiment of an electrical measuring arrangement, suitable for a very precise speed measurement, and

Fig. 20, the measuring arrangement of Fig. 19 at high speed.

Fig. 1 first shows the basic construction of an electrical measuring arrangement according to the invention for measuring or calculating the fill level of or other mechanical data of an in a container 1 union, electrically conductive liquid 2 , which are in particular normally conductive water can. Otherwise, this system can also be used for all other electrically conductive liquids.

The electrical measuring arrangement shown in Fig. 1 in a basic representation has a measuring sensor 3 . Such a measuring sensor 3 is regularly followed by an evaluation circuit 4 , as shown in the basic block diagram, for example in Fig. 7 for another game Ausführungsbei. All of this is known from the prior art.

It is now essential that the measuring sensor 3 is designed as a stray field sensor with two measuring electrodes 6 a, 6 b lying at a certain lateral distance from one another. In the illustrated and preferred embodiment, for example, in which it is a matter of measuring the level of the liquid in the container 1 , the two measuring electrodes 6 a, 6 b are arranged in one plane, namely at the bottom 5 of the container 1 . So they have practically the same level, which simplifies the measurement evaluation. The stray field forming in the liquid 2 is indicated. As a result, the measured value measured with the measuring sensor 3 changes significantly with the fill level or the fill level of the liquid 2 . From the level one can then calculate other mechanical data of the liquid 2 , for example its volume. It can be based on Fig. 1 readily understood that the Meßelektro Figures 6 a, 6 b in different planes can be, in particular wink lig each other, for example a measuring electrode 6a on the bottom 5 of the Behäl ters 1 and the other measuring electrode 6 b to the side wall of the container 1 . This can also be appropriate under certain measuring conditions. Basically, both measuring electrodes 6 a, 6 b could be arranged on the opposite walls of the container 1 . This would then give other metrological options.

In order to enable the correct detection of the level of the liquid 2 in the container 1 , the measuring electrodes 6 of the measuring sensor 3 are arranged close to the outermost edges of the bottom 5 in the exemplary embodiment according to FIG. 1. It is also true that the representation of two measuring electrodes 6 a, 6 b is only a basic representation, for stray field sensors it is known per se to separate the current supply via the electrodes from the voltage measurement, i.e. with current electrodes and voltage electrodes to work. In the illustrated Ausführungsbei play, however, it has been assumed that only two measuring electrodes per measuring sensor 3 are used, the other alternatives are of course realizable in the same way.

Stray field sensors of the type in question can be carried out in a particularly expedient manner in planar technology on a substrate. For this purpose, the electrically conductive, flat structures, preferably applied in planar technology, in particular in thin film technology, can be provided on a substrate, a dielectric which is resistant to the liquid 2 concerned then being applied at certain points as a cover in planar technology or other coating technology.

Fig. 2 shows a very particularly preferred embodiment of a measuring sensor 3 for an electrical arrangement according to the invention, which is namely characterized in that the one measuring electrode 6 a an at least substantially closed annular electrode surface and the other measuring electrode 6 b a lying in the center of the annulus , forms a circular electrode surface and that the edges of the two electrode surfaces are at a considerable radial distance from one another. It can be seen here that the supply lines 7 are made as narrow as possible from the connection surface 8 on the substrate shown only in broken lines in order to keep the stray fields that occur as low as possible. In the illustrated arrangement of the Meßelektro the 6 of the measuring sensor 3 ensures that the total stray field measured remains constant regardless of the inclination of the container 1 after each of the possible directions. This cannot be ensured in the case of measuring electrodes 6 directed onto a specific axis.

So far, an electrical measuring arrangement with in principle a measuring sensor 3 , which forms a stray field over the measuring electrodes 6 , has been explained in its metrological importance. For this purpose is perhaps to be noted that the maximum measurable height about 0.8 times the distance of the measurement electrodes 6 is, if one assumes a sufficient measurement accuracy and if one uses the far-spaced measurement electrodes 6 shown in FIG. 1. In the embodiment shown in FIG. 2, the measurable maximum fill level is reduced to approximately 0.5 times to 0.4 times the diameter of the measuring electrode 6 a, but then one has the advantage of the inclination independence of the measured value.

It is essential that an electrical measuring arrangement of the type explained above also closed in itself as a measuring arrangement for other mechanical Data can be used. According to the invention it has been recognized that the Container together with the liquid contained in it itself is part of the measurement Arrangement can form, so that other mechanical data, such as the  Inclination of the container with liquid therein, a rotation of the Container, a linear acceleration of the container and / or other mecha African data can be recorded by measurement, in each case by the behavior the liquid in the container is measured.

Special measuring effects can be achieved on the basis of the level measurement when using several measuring sensors 3, in particular at the bottom 5 of the container 1 . Fig. 3 shows to the fact that the container 1 is tiltable about a here at any rate virtually centrally located on the bottom 5 tilting axis 9, and that on both sides of the tilt axis 9 are each a measuring sensor 3 is placed and evaluated the measured values of the two measuring sensors 3 in the evaluation circuit 4, and can be evaluated in particular in a differential evaluation method. In the exemplary embodiment shown here, the measuring sensors 3 on both sides of the tilt axis 9 are arranged essentially symmetrically to the latter.

The tilt axis 9 does not have to be physically present, it is always virtually present in the system, even if the container 1 in FIG. 4 is shifted parallel to itself, for example. It is essential that a measuring sensor 3 is arranged on both sides of the "center" in principle. It can be seen from Fig. 3 that when the container 1 is level , the liquid level in the container 1 in the area of both Meßsenso ren 3 is at the same distance from the floor 5 , so that the measured stray fields are identical within the scope of the measurement and evaluation accuracy. In Fig. 4, on the other hand, it can be seen that the stray field of the measuring sensor 3 has increased considerably on the right because of the inclination of the container 1 , while the stray field of the measuring sensor 3 shown on the left has been constricted by the inclination of the container 1 . An evaluation with the evaluation circuit 4 thus makes it possible, for example, to measure the inclination of the container 1 . This can be used in position determination systems, in "electronic water scales" etc. with great advantage, especially if one takes into account that the measuring sensors 3 can be designed in planar technology, so if necessary they can also be miniaturized.

FIG. 5 makes it clear that in the case of the inclination measurement explained with reference to FIGS. 3 and 4, it is more favorable with regard to the evaluation if the normal level of the liquid 2 in the container 1 is as low as possible. It can be seen that the relative change x / y in FIG. 5 is considerably greater than the relative change x '/ y'. Thus the Meßempfindlich The further so the outer measuring electrode 6 b of the in-the middle measuring electrodes 6a are removed, and the lower the liquid level, the higher ness, although the space available angle measuring section is of course correspondingly lower.

In order to avoid stray fields which distort the measurement between different measuring sensors 3 , it is recommended that the measuring electrodes 6 a of the two measuring sensors 3 close to the tilt axis 9 lie at the same potential. The next step is then the configuration according to FIG. 5 , which is characterized in that the tilting axis 9 near the measuring electrode 6 a of the two measuring sensors 3 are combined in a single electrode surface. This is, of course, a considerable simplification in terms of the circuit structure, it being only necessary to ensure that the electrode surface of the electrode forming the two measuring electrodes 6 a is centered on the tilt axis 9 , even if it is only virtually present.

The measuring arrangements according to FIGS . 3 to 5 are only sensitive with respect to an inclination or tilting about the tilt axis 9 , they are not sensitive to tilt or only very slightly tilt-sensitive about a tilt axis running perpendicular thereto. If you want to be able to measure inclinations about mutually perpendicular tilting axes, i.e. ultimately inclinations in all directions, it is recommended that in addition to the first pair of measuring sensors 3 a second pair of measuring sensors 3 is provided and angularly offset, preferably by 90 ° centered with respect to the first pair of measuring sensors 3 on the same center as the first pair of measuring sensors 3 is subordinated to. Fig. 6 shows such a measuring arrangement with two pairs of measuring sensors 3 , in which case the following also applies that the measuring electrodes 6 a close to the center of all measuring sensors 3 are combined in a single electrode surface. In the exemplary embodiment shown, the angles indicated by the arc-shaped arrows are each 90 °. With correspondingly modified evaluation programs, one can of course also work with two pairs of measuring sensors 3 which are not exactly at a 90 ° angle.

Fig. 7 shows the measuring arrangement from Fig. 6 with the schematically indicated substrate 10 with the applied measuring electrodes 6 a, 6 b, which have been manufactured in Planartech technology, with a generator 11 , a first subtraction circuit 12 for the first pair of measuring sensors 3 , a second sub traction circuit 13 for the second pair of measuring sensors 3 , a zero position detection stage 14 and an AND circuit 15th At the outputs represented by the arrows, the inclination measurement signals for the x-direction are at the top, for the y-direction at the bottom. A signal is only emitted at the middle output if the container 1 is exactly in a horizontal orientation, that is to say there is no inclination in any direction. This is one way of carrying out the corresponding evaluation using the evaluation circuit 4 .

Fig. 11 shows a mechanically preferred Ausfüh approximately example of a measuring arrangement according to the invention, which is characterized in that at least one separating element 16 is arranged or formed in the container 1 , through the separating element 16 a certain, he increased flow resistance for the liquid when flowing from one side of the separating element 16 to the other side of the separating element 16 and that a certain damping can be predetermined. The damping constant of the container 1 used here as the inclination sensor can be determined by the number and size of the openings in the separating element 16 , which is designed here as a perforated plate. An alternative could also be to run the Trennele element 16 as a partition with openings or as a double partition with an underflow channel, so to speak to divide the container 1 into two parts with a flow connection of small cross-section.

For metrological applications, it is recommended that an acoustic evaluation signal can be triggered by the evaluation circuit 4 , in particular that different evaluation signals can be triggered depending on the sign of the output signal indicating the direction of tilt. In particular, you can, for example, work "blindly" with an electronic spirit level, which is of great advantage for many applications. Otherwise, appropriate optical signals would of course also be useful if this appears appropriate in the respective application.

Fig. 8 shows another, similar application for an elec trical measuring arrangement of the type in question, here a movable body 16 in an electrically conductive liquid 2 with a corre sponding measuring sensor 3 is to be checked with regard to its position. Here it applies that the or each measuring sensor 3 is designed as a stray field sensor with two substantially in one plane at a certain lateral distance from each other measuring electrodes 6 a, 6 b and that the measuring sensor 3 is arranged near the path of movement of the movable body 16 and is directed to the movable body 16 with the electrode surfaces of the measuring electrodes 6 . Here too, of course, it applies that the measuring sensor 3 , which is designed as a stray field sensor, can expediently be designed using planar technology.

In the exemplary embodiment according to FIGS. 8 and 9 there is, for example, a rotating part in the liquid 2 , the speed of which is to be measured. This is done with the measuring sensor 3 shown there, designed as a stray field sensor, the stray field formation of which is reduced by the teeth 16 of the body 16 passing in front of the measuring electrodes 6 . This is shown very clearly in FIG. 8 in comparison with FIG. 9.

Fig. 10 shows a further application of the measuring arrangement previously discussed, which is characterized in that a plurality of measuring sensors 3 are arranged along the movement path of the movable body 16 . The body 16 is an elongated part that moves relative to the multiple measuring sensors 3 be. A type of position measurement is therefore carried out here, at least a position determination. Corresponding in one direction one behind the other arranged measuring sensors 3 can of course also be used for other fields of application, which will be explained in more detail later.

Generally, stray field sensors of the type in question can be operated at temperatures up to approx. 600 K if they are implemented in planar technology. Of course you have to choose the right materials. Otherwise, as has been explained at the beginning, a stray field sensor used as a pure conductivity sensor can also be provided for the purpose of calibration or standardization, although this is not shown in detail in the figures .

The usual circuit design options apply to the evaluation circuit. In particular, it is expedient that the evaluation circuit 4 is designed as evaluation electronics and, in particular, has a microprocessor or is integrated in a microprocessor.

In terms of measurement technology, it can be problematic that the electrically conductive liquid 2 adheres to the wall of the container 1 in the container 1 . This falsifies the level measurement. This adhesive effect can be eliminated by filling the container 1 above the electrically conductive liquid 2 with an electrically non-conductive auxiliary liquid 17 . Only the area of the electrically conductive liquid 2 is effective in terms of measurement technology. The edge of the electrically conductive liquid 2 is straightened by the electrically non-conductive, filled auxiliary liquid 17 or freed of adhesive forces. Of course, the term "electrically conductive" in comparison with the term "not electrically conductive" relative, that is, that even a very low conductive auxiliary liquid speed 17 can be used to cover the electrically conductive liquid 2 under certain circumstances.

While FIG. 12 shows the previously explained cover with an auxiliary liquid 17 insofar as the container 1 is still not completely filled with liquid, FIG. 13 shows a preferred or at least sometimes preferred form, in which the container 1 with the Liquid 2 and the auxiliary liquid 17 is completely filled. This can sometimes have disruptive effects less impact. It could also be provided that the container 1 Be above the liquid 2 or the auxiliary liquid 17 (practically) evacuated, so that only the saturation vapor pressure of the liquid 2 or the auxiliary liquid 17 is set above the liquid level. A suitable pressure in the remaining volume must be selected here.

It has already been mentioned that several measuring sensors 3 can be arranged one behind the other in one direction. Such an arrangement would allow a fill level profile to be accommodated in the container 1 . Accordingly, it is recommended that the evaluation circuit 4 is then designed to accommodate such a fill level profile. Fill level profiles can also be recorded with only two measuring sensors or even with one measuring sensor, but with lower measuring accuracy.

Fig. 14 now shows an application of the measuring arrangement derge stalt that the container 1 is used in conjunction with a deformation in particular by its weight changing its tendency to deforming body 18 . The deformation body 18 is in the embodiment shown here is a bending rod, which can be used, for example, in a balance to accommodate a weight to be weighed.

If one arranges the container 1 of the measuring arrangement according to the invention the strain body 18, so the angle of inclination 18 introduced force, such as force is proportional to the weight in the Ver forming body. The measuring arrangement used here according to the invention as an inclination sensor can have a very high sensitivity (for example 1 mV / 0.001 °). Of particular importance in this electrical measuring arrangement is the fact that with this electrical measuring arrangement not only the inclination of the container 1 caused by the effect of weight can be measured, but also, for example when used in a balance, can also determine whether the unloaded scale is in the horizontal. With a corresponding design of the evaluation circuit 4 , it would be conceivable, for example, to first check the alignment of the scale in the horizontal before each actual weight measurement and, if there are any deviations, to carry out an independent calibration.

The measuring arrangement to be used as an inclination sensor in connection with a deformation body 18 can also be used for deformation measurements as such, for example for measuring position deviations in workpieces, buildings or bridges. There are very wide fields of application here.

Fig. 15 shows another application example in which the measuring arrangement according to the invention is used for linear acceleration measurement. For a linear acceleration in Fig. 15 to the right, the liquid 2 of the Behäl collects in the container 1 logically to the left wall ters 1 to, one of the acceleration with the therein configured for measuring a Füllhöhenprofils measuring arrangement can be of the container 1 corresponding to the measurement signal calculate. Fig. 16 shows the arrangement of the plurality of Meßsenso ren 3 in one direction in a row. It goes without saying that even superimposed inclinations can be measured with such a system.

Fig. 17 shows that the container 1 is designed here as a rotating body. The currently running rotation of the container 1 with the shaft 19 is indicated by the ring arrow. Due to the rotational acceleration, the liquid 2 is pushed onto the outer wall. The measuring sensor 3 used is shown in FIG. 18, it can be seen that a relatively simple measuring sensor according to claim 7 already produces the desired reliable measuring result. This measurement result can of course also be used for speed measurement.

FIGS. 19 and 20 show a specially designed embodiment of a ver to the rotational acceleration measurement or rotational speed measurement reversible system. Here is a rotary body 20 is arranged on the shaft 19 , which has the shape of a doubled trapezoid in section. At the low speed of rotation of the rotary body 20 shown in FIG. 19, the liquid 2 is held in the position shown, possibly supported by appropriate aids. Annular measuring electrodes 6 a, 6 b are recognizable on the tapered outer walls of the rotating body. If the speed is now increased, which is indicated in FIG. 20 by the ring-shaped double arrow, the position of the liquid 2 relative to the measuring electrodes 6 a, 6 b changes in the manner indicated. The result of the measurement of the rotational acceleration or the rotational speed with the special rotating body 20 is particularly precise. It is a position-independent speed sensor for particularly high speeds.

There are of course a variety of other uses for the electrical measuring arrangement according to the invention, it is essential that always the stray field principle is used, whereby the miniaturizability by Planar technology offers very special advantages.

Claims (31)

1. Electrical measuring arrangement for measuring or calculating the fill level or other mechanical data of an electrically conductive liquid ( 2 ) located in a container ( 1 ), in particular of normally conductive water, with at least one measuring sensor ( 3 ) and with an evaluation circuit ( 4 ), characterized in that the (or each) measuring sensor ( 3 ) is designed as a stray field sensor with two measuring electrodes ( 6 a, 6 b) lying at a certain lateral distance from one another and that, preferably, the loading container ( 1 ) together with the liquid therein ( 2 ) is itself part of the measuring arrangement. 2. Measuring arrangement according to claim 1, characterized in that the measuring electrodes ( 6 a, 6 b) lie essentially in one plane. 3. Measuring arrangement according to claim 1, characterized in that the measuring electro which are in different levels and, in particular, at an angle to each other which are arranged. 4. Measuring arrangement according to one of claims 1 to 3, characterized in that at least one measuring electrode ( 6 a, 6 b) on the bottom ( 5 ) of the container ( 1 ) is arranged. 5. Measuring arrangement according to claim 4, characterized in that the Meßelek electrodes ( 6 ) near the outermost edges of the bottom ( 5 ) are arranged. 6. Measuring arrangement according to one of claims 1 to 5, characterized in that the measuring sensor designed as a stray field sensor ( 3 ) is designed in planar technology on a substrate. 7. Measuring arrangement according to one of claims 1 to 6, characterized in that the one measuring electrode ( 6 a) forms an at least substantially closed ne annular electrode surface and the other measuring electrode ( 6 b) forms a circular electrode surface lying in the center of the circular ring and in that the edges of the two electrode surfaces are at a considerable radial distance from one another. 8. Measuring arrangement according to one of claims 1 to 7, characterized in that the container ( 1 ) is tiltable about a tilt axis ( 9 ), that on both sides of the tilt axis ( 9 ) a measuring sensor ( 3 ) is arranged and that the measured values of the two Measuring sensors ( 3 ) in the evaluation circuit ( 4 ) can be evaluated, and in particular can be evaluated in a differential evaluation method. 9. Measuring arrangement according to claim 8, characterized in that the tilt axis ( 9 ) is in any case virtually in the center of the floor ( 5 ). 10. Measuring arrangement according to claim 8 or 9, characterized in that the measuring sensors ( 3 ) are substantially symmetrical to the tilt axis ( 9 ) angeord net. 11. Measuring arrangement according to one of claims 8 to 10, characterized in that the tilting axis ( 9 ) close measuring electrodes ( 6 a) of the two measuring sensors ( 3 ) are at the same potential. 12. Measuring arrangement according to claim 11, characterized in that the tilting axis ( 9 ) near measuring electrodes ( 6 a) of the two measuring sensors ( 3 ) are combined in a single electrode surface. 13. Measuring arrangement according to one of claims 8 to 12, characterized in that in addition to the first pair of measuring sensors ( 3 ) a second pair of measuring sensors ( 3 ) is provided and at an angle, preferably by 90 °, offset from the first pair of measuring sensors (3) is arranged centered on the same center as the first pair of measuring sensors (3). 14. Measuring arrangement according to claim 13, characterized in that the measuring electrodes near the center ( 6 a) of all measuring sensors ( 3 ) are combined in a single electrode surface. 15. Measuring arrangement according to one of claims 1 to 14, in particular according to one of claims 8 to 14, characterized in that at least one separating element ( 16 ) is arranged or formed in the container ( 1 ) that a certain by the separating element ( 16 ) , Increased flow resistance for the liquid when flowing from one side of the separating element ( 16 ) to the other side of the separating element ( 16 ) and that a certain damping can be predetermined. 16. Measuring arrangement according to claim 15, characterized in that the separating element ( 16 ) is designed as a perforated plate, as a partition with openings or as a double partition with underflow channel. 17. Measuring arrangement according to one of claims 1 to 16, characterized in that an acoustic evaluation signal can be triggered by the evaluation circuit ( 4 ), in particular that different evaluation signals can be triggered depending on the sign of the output signal indicating the direction of tilt. 18. Electrical measuring arrangement for measuring or calculating mechanical data of moving bodies ( 16 ) in a container ( 1 ) located, electrically conductive liquid ( 2 ), in particular in normally conductive water, with at least one measuring sensor ( 3 ) and with one Evaluation circuit ( 4 ), in particular according to one of claims 1 to 7, characterized in that the or each measuring sensor ( 3 ) as a stray field sensor with two measuring electrodes ( 6 a, 6 b ) is executed and that the measuring sensor ( 3 ) is arranged close to the path of movement of the movable body ( 16 ) and is aligned with the electrode surfaces of the measuring electrodes ( 6 ) on the movable body ( 16 ). 19. Measuring arrangement according to one of claims 1 to 18, characterized in that a plurality of measuring sensors ( 3 ) in one direction one behind the other, in particular along the path of movement of the movable body ( 16 ), are arranged. 20. Measuring arrangement according to one of claims 1 to 19, characterized in that the measuring sensor ( 3 ) or the measuring sensors ( 3 ) a sensor designed as a conductivity sensor ( 3 ), in particular also in the form of a stray field sensor, is assigned for calibration purposes. 21. Measuring arrangement according to one of claims 1 to 20, characterized in that the evaluation circuit ( 4 ) is designed as evaluation electronics and, in particular, has a microprocessor or is inte grated in a microprocessor. 22. Measuring arrangement according to one of claims 1 to 21, characterized in that the container ( 1 ) above the electrically conductive liquid ( 2 ) is filled with an electrically non-conductive auxiliary liquid ( 17 ) of lower specific weight. 23. Measuring arrangement according to claim 22, characterized in that the container ter ( 1 ) with the liquid ( 2 ) and the auxiliary liquid ( 17 ) is completely filled GE. 24. Measuring arrangement according to one of claims 1 to 22, characterized in that the container ( 1 ) above the liquid ( 2 ) or the auxiliary liquid speed ( 17 ) is evacuated. 25. Measuring arrangement according to one of claims 1 to 24, in particular according to claim 19, characterized in that the evaluation circuit ( 4 ) is designed to take on a fill level profile. 26. Measuring arrangement according to one of claims 1 to 25, characterized in that the container ( 1 ) is used in connection with a deformation body ( 18 ), which in any case changes in some areas in the event of deformation, in particular by the action of weight. 27. Measuring arrangement according to one of claims 1 to 25, characterized in that the container ( 1 ) is designed as a rotating body or arranged on a rotating body, in particular is arranged laterally. 28. Use of an electrical measuring arrangement with an electrically conductive liquid ( 2 ) located in a container ( 1 ), with at least one measuring sensor ( 3 ) and with an evaluation circuit ( 4 ), the or each measuring sensor ( 3 ) being used Stray field sensor with two measuring electrodes ( 6 a, 6 b) located at a certain lateral distance from one another, in particular a measuring arrangement according to one of claims 2 to 25, for inclination measurement. 29. Use of an electrical measuring arrangement with an electrically conductive liquid ( 2 ) located in a container ( 1 ), with at least one measuring sensor ( 3 ) and with an evaluation circuit ( 4 ), the or each measuring sensor ( 3 ) being used Scattering field sensor with two measuring electrodes ( 6 a, 6 b) located at a certain lateral distance from one another, in particular a measuring arrangement according to one of claims 2 to 25, in conjunction with a deformation body, which changes in each case in certain areas when deformed, in particular by the action of weight for deformation measurement or position measurement. 30. Use of an electrical measuring arrangement with an electrically conductive liquid ( 2 ) located in a container ( 1 ), with at least one measuring sensor ( 3 ) and with an evaluation circuit ( 4 ), the or each measuring sensor ( 3 ) being used Stray field sensor with two measuring electrodes ( 6 a, 6 b) lying at a certain lateral distance from one another, in particular a measuring arrangement according to one of claims 2 to 25, for linear acceleration measurement. 31. Use of an electrical measuring arrangement with an electrically conductive liquid ( 2 ) located in a container ( 1 ), with at least one measuring sensor ( 3 ) and with an evaluation circuit ( 4 ), the or each measuring sensor ( 3 ) being used Stray field sensor with two measuring electrodes ( 6 a, 6 b) lying at a certain lateral distance from one another, in particular a measuring arrangement according to one of claims 2 to 25, for rotation acceleration measurement or for speed measurement.