CN111575717A - Inserting device for buried pipe anticorrosive coating damage simulation test piece - Google Patents
Inserting device for buried pipe anticorrosive coating damage simulation test piece Download PDFInfo
- Publication number
- CN111575717A CN111575717A CN202010387246.4A CN202010387246A CN111575717A CN 111575717 A CN111575717 A CN 111575717A CN 202010387246 A CN202010387246 A CN 202010387246A CN 111575717 A CN111575717 A CN 111575717A
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- buried
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- pipeline
- anticorrosive coating
- test piece
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- 238000012360 testing method Methods 0.000 title claims abstract description 77
- 238000004088 simulation Methods 0.000 title claims abstract description 26
- 239000011248 coating agent Substances 0.000 title claims abstract description 25
- 238000000576 coating method Methods 0.000 title claims abstract description 25
- 238000004210 cathodic protection Methods 0.000 claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 claims description 20
- 230000007547 defect Effects 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 15
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005536 corrosion prevention Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000003832 thermite Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/22—Monitoring arrangements therefor
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/04—Controlling or regulating desired parameters
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/10—Controlling or regulating parameters
- C23F2213/11—Controlling or regulating parameters for structures subject to stray currents
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/32—Pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model belongs to the technical field of nuclear power maintenance, concretely relates to access device of buried pipe anticorrosive coating damage simulation test block. According to the embodiment of the disclosure, the cathodic protection potential of the buried pipeline is determined according to the power-off potentials of the test pieces buried around the pipeline, so that the cathodic protection potential of the buried steel pipeline can be quickly and accurately obtained under the condition that the buried pipeline has stray current, or a sacrificial anode is directly connected with the pipeline, or external forced current equipment cannot be interrupted. In addition, this disclosed embodiment realizes reference electrode, test block and electric potential testing arrangement's connection through access device, is favorable to realizing the line connection of system fast, improves detection efficiency.
Description
Technical Field
The invention belongs to the technical field of nuclear power operation and detection, and particularly relates to an access device of a buried pipe anticorrosive coating damage simulation test piece.
Background
Generally speaking, after the buried pipeline adopts impressed current cathodic protection, if the pipeline has stray current, or the sacrificial anode is directly connected with the pipeline, or there is the condition that outside impressed current equipment can not be interrupted, it will be difficult to reduce the ohmic voltage drop in the soil medium through the outage method, therefore, how to effectively detect out the true potential of cathodic protection of the buried steel pipeline under the condition that the buried pipeline is connected with the sacrificial anode and the stray current is interfered, can design an access device of buried pipe anticorrosive coating damage simulation test block.
Disclosure of Invention
In order to overcome the problems in the related art, the access device of the buried pipe anticorrosive coating damage simulation test piece is provided.
According to an aspect of the disclosed embodiment, an access device for a buried pipe anticorrosive coating damage simulation test piece is provided, which comprises: the test device comprises a wiring board, a reference electrode, a plurality of test pieces, a potential testing device, a synchronous current breaker and a control device;
the test pieces and the reference electrode are buried around a buried pipeline, and the buried pipeline is in a forced current cathodic protection state;
the wiring board comprises a board body, and a first wiring terminal, a plurality of second wiring terminals and a plurality of third wiring terminals which are arranged on the board body;
the potential testing device comprises a plurality of potential acquisition elements;
the reference electrode is connected with the first connecting terminal;
the defect part of each test block is connected with a potential acquisition element through a second connecting terminal, the potential acquisition element is connected with the first connecting terminal, and the material of the defect part is the same as that of the buried pipeline;
the buried pipeline comprises a plurality of welding spots, each welding spot is connected with a potential acquisition element through a third wiring terminal, and the potential acquisition element is connected with the first wiring terminal;
each second connecting terminal is connected with each third connecting terminal through the synchronous current breaker;
the control device is connected with each potential acquisition element, and acquires potential data acquired by each potential acquisition element under the condition that the synchronous current breaker is disconnected;
and the control device determines the protection potential of the buried pipeline according to the acquired potential data.
In one possible implementation, the control device determines a minimum value of numerical absolute values of the plurality of potential data, and takes the minimum value as the protection potential of the buried pipeline.
In one possible implementation manner, the access device of the buried pipe anticorrosive coating damage simulation test piece comprises a first trigger and a second trigger;
the first trigger is connected with the synchronous current breaker, and the second trigger is connected with each potential acquisition element;
the moment when the first trigger triggers the synchronous current breaker to be switched off is the same as the moment when the second trigger triggers each potential acquisition element to acquire potential data.
In one possible implementation, the exposed areas of the defective portions of the test pieces are different from each other.
In a possible implementation mode, the reference electrode is close to the test piece with the maximum exposed area of the defect part.
In a possible implementation manner, each test piece further comprises a corrosion prevention part, the corrosion prevention part is wrapped on the outer side of the defect part, and the material of the corrosion prevention part is the same as that of the corrosion prevention layer of the buried pipeline.
In one possible implementation, each test strip is buried above a buried pipeline and arranged in a line along the pipeline.
In one possible implementation, the spacing between the test strips is between 6 and 10 meters.
In one possible implementation, the plurality of welding points are distributed at both ends of the buried pipeline.
In one possible implementation, the spacing between the solder bumps is between 50 mm and 60 mm.
The invention has the beneficial effects that: according to the embodiment of the disclosure, the cathodic protection potential of the buried pipeline is determined according to the power-off potentials of the test pieces buried around the pipeline, so that the cathodic protection potential of the buried steel pipeline can be quickly and accurately obtained under the condition that the buried pipeline has stray current, or a sacrificial anode is directly connected with the pipeline, or external forced current equipment cannot be interrupted. In addition, this disclosed embodiment realizes reference electrode, test block and potential testing device's connection through the wiring board, is favorable to realizing the line connection of system fast, improves detection efficiency.
Drawings
Fig. 1 is a schematic diagram illustrating an access device of a buried pipe corrosion protection layer damage simulation test strip according to an exemplary embodiment.
Figure 2 is a schematic diagram illustrating a patch panel test connection of an access device for a buried pipe corrosion protection layer damage simulation coupon according to an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating a potential testing device of an access device of a buried pipe corrosion protection layer damage simulation test strip according to an exemplary embodiment.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Fig. 1 is a schematic diagram illustrating an access device of a buried pipe corrosion protection layer damage simulation test strip according to an exemplary embodiment. Figure 2 is a schematic diagram illustrating a patch panel test connection of an access device for a buried pipe corrosion protection layer damage simulation coupon according to an exemplary embodiment. Fig. 3 is a schematic diagram illustrating a potential testing device of an access device of a buried pipe anticorrosive coating damage simulation test piece according to an exemplary embodiment. As shown in fig. 1 to 3, the access device of the buried pipe corrosion protection layer damage simulation test piece may include: a wiring board 5, a reference electrode 7, a plurality of test pieces 6, a potential testing device 10, a synchronous current breaker 8 and a control device (not shown in the figure);
in the embodiment of the present disclosure, the control device may be represented as a terminal device that performs information processing and program operation, and the control device may be, for example, a programmable logic controller, an application specific integrated circuit, or the like.
As an example of this embodiment, the buried pipeline 1 may be buried under the ground and in a forced current cathodic protection state (not shown in the figure), a plurality of test strips 6 and reference electrodes 7 may be buried around the buried pipeline 1, for example, a plurality of test strips 6 and reference electrodes 7 may be buried above the buried pipeline 1, and a plurality of test strips 6 may be arranged in a straight line along the axis of the buried pipeline 1.
The wiring board 5 may include a board body 20 and a first connection terminal 21, a plurality of second connection terminals 22, and a plurality of third connection terminals 23 provided on the board body 20, wherein the board body 20 may be, for example, an epoxy board, and the first connection terminal 21, the plurality of second connection terminals 22, and the plurality of third connection terminals 23 may be provided on the board body 20. The patch panel 5 may be provided on the ground. The first connection terminals 21, the second connection terminals 22, and the third connection terminals 23 may be completely the same, partially the same, or different from each other.
The reference electrode 7 may be connected to the first connection terminal 21 by a cable.
As shown in fig. 3, the electric potential testing device 10 may include a plurality of electric potential collecting elements 11, and each electric potential collecting element 11 may be used to collect electric potential data. A control device (not shown) may be connected to each potential collecting element 11 of the potential testing device 10.
As shown in fig. 1 and 3, each test piece 6 may include a defect portion (not shown), the defect portion of each test piece 6 may be connected to a second connection terminal 22 through a cable, the second connection terminal 22 may be connected to a potential collecting element 11, and the potential collecting element 11 may be connected to the first connection terminal 21.
The buried pipeline 1 can further comprise a plurality of welding spots 2, the welding spots 2 can be distributed at two ends of the buried pipeline 1, the welding spots 2 can be welded by thermite welding, the distance between the welding spots 2 can be 50 mm to 60 mm, the welding positions of the welding spots 2 can be coated with an anticorrosive coating, and the material adopted by the anticorrosive coating can be the same as the anticorrosive coating of the buried pipeline 1. As shown in fig. 1 and 3, each of the pads 2 may be connected to a third connection terminal 23 by a wire, the third connection terminal 23 may be connected to a potential detecting element 11, and the potential detecting element 11 may be connected to the first connection terminal 21.
As shown in fig. 2, each second connection terminal 22 may be connected to the synchronous breaker 8 via a jumper cable 9, each third connection terminal 23 may be connected to the synchronous breaker 8 via a jumper cable 9, and the synchronous breaker 8 may control the opening and closing of a circuit between each second node terminal 22 and each third connection terminal 23.
The cathodic protection power supply can be controlled to continuously supply constant current to the buried pipeline 1 for a specific duration (for example, 24 hours), so that the buried pipeline 1 and each test block 6 are sufficiently polarized, then the synchronous current breaker 8 can be disconnected, and the control device can acquire potential data acquired by each potential acquisition element 11 under the condition that the synchronous current breaker 8 is disconnected. The control device can determine the protection potential of the buried pipeline 1 according to the acquired potential data. For example, the control means may determine the numerical absolute values of a plurality of potential data and determine the minimum value of the plurality of absolute values (which may represent the maximum extent to which the buried pipeline 1 is polarised) which the control means may use as the protection potential for the buried pipeline 1. Additionally, the control device may use a numerical average of the plurality of potential data as the protection potential of the buried pipeline 1.
According to the embodiment of the disclosure, the cathodic protection potential of the buried pipeline is determined according to the power-off potentials of the test pieces buried around the pipeline, so that the cathodic protection true potential of the buried steel pipeline can be quickly and accurately obtained under the condition that the buried pipeline has stray current, or a sacrificial anode is directly connected with the pipeline, or external forced current equipment cannot be interrupted. In addition, this disclosed embodiment realizes reference electrode, test block and potential testing device's connection through the wiring board, is favorable to realizing the line connection of system fast, improves detection efficiency.
In one possible implementation, the buried pipeline anticorrosive coating damage detection system may further include a first trigger and a second trigger; the first trigger can be connected with the synchronous current breaker, and the second trigger can be connected with each potential acquisition element; the moment when the first trigger triggers the synchronous cutout to be disconnected is the same as the moment when the second trigger triggers each potential acquisition element to acquire potential data. For example, the timers of the first trigger and the second trigger may be synchronized (for example, the first trigger and the second trigger may implement the timer synchronization through a GPS signal, and the first trigger and the second trigger may implement the timer synchronization through other communication methods, which is not limited in this disclosure), so that the first trigger and the second trigger may send trigger signals at the same time, and when the first trigger triggers the synchronous cutout to be closed, the second trigger may trigger each of the potential collecting elements to collect data at the same time. Therefore, the automatic and accurate acquisition of the power-off potential data of each welding spot and each test piece can be realized without a complex control system.
In one possible implementation, the exposed areas of the defective portions of the test pieces may be different from each other. For example, the buried pipeline anticorrosive coating damage detection system can include 4 test pieces, and the exposed area of the defect part of these 4 test pieces can set up to four kinds of 6.5 square centimeters, 20 square centimeters, 50 square centimeters, 100 square centimeters respectively, like this, under the unknown condition of the defect size of buried pipeline, can simulate the polarization state under the different defect size condition of buried pipeline through the test piece of different exposed areas, more accurate definite buried pipeline's cathodic protection electric potential from this.
In one possible implementation, the reference electrode can be close to the test piece with the largest exposed area of the defect part.
In one possible implementation, the spacing between the test strips may be between 6 and 10 meters. Thereby, mutual interference between ground potential gradient fields at adjacent test pieces can be reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. The utility model provides an access device of buried pipe anticorrosive coating damage simulation test block, a serial communication port, buried pipe anticorrosive coating damage detecting system includes: the test device comprises a wiring board, a reference electrode, a plurality of test pieces, a potential testing device, a synchronous current breaker and a control device;
the test pieces and the reference electrode are buried around a buried pipeline, and the buried pipeline is in a forced current cathodic protection state;
the wiring board comprises a board body, and a first wiring terminal, a plurality of second wiring terminals and a plurality of third wiring terminals which are arranged on the board body;
the potential testing device comprises a plurality of potential acquisition elements;
the reference electrode is connected with the first connecting terminal;
the defect part of each test block is connected with a potential acquisition element through a second connecting terminal, the potential acquisition element is connected with the first connecting terminal, and the material of the defect part is the same as that of the buried pipeline;
the buried pipeline comprises a plurality of welding spots, each welding spot is connected with a potential acquisition element through a third wiring terminal, and the potential acquisition element is connected with the first wiring terminal;
each second connecting terminal is connected with each third connecting terminal through the synchronous current breaker;
the control device is connected with each potential acquisition element, and acquires potential data acquired by each potential acquisition element under the condition that the synchronous current breaker is disconnected;
and the control device determines the protection potential of the buried pipeline according to the acquired potential data.
2. The device for accessing a buried pipe anticorrosive coating damage simulation test piece according to claim 1, wherein the control device determines a minimum value of numerical absolute values of the plurality of potential data, and uses the minimum value as a protection potential of the buried pipeline.
3. The device for accessing the buried pipe anticorrosive coating damage simulation test piece according to claim 1, wherein the device for accessing the buried pipe anticorrosive coating damage simulation test piece comprises a first trigger and a second trigger;
the first trigger is connected with the synchronous current breaker, and the second trigger is connected with each potential acquisition element;
the moment when the first trigger triggers the synchronous current breaker to be switched off is the same as the moment when the second trigger triggers each potential acquisition element to acquire potential data.
4. The device for connecting a buried pipe anticorrosive coating damage simulation test piece according to claim 1, wherein the exposed areas of the defect portions of the test pieces are different from each other.
5. The device for accessing the buried pipe anticorrosive coating damage simulation test piece according to claim 1, wherein the reference electrode is close to the test piece with the largest exposed area of the defect part.
6. The device for connecting a buried pipe anticorrosive coating damage simulation test piece according to claim 1, wherein each test piece further comprises an anticorrosive part, the anticorrosive part wraps the outer side of the defect part, and the anticorrosive part is made of the same material as the anticorrosive coating of the buried pipe.
7. The device for connecting the buried pipe corrosion protection layer damage simulation test block according to claim 1, wherein each test block is buried above the buried pipeline and is linearly arranged along the pipeline.
8. The device for connecting a buried pipe anticorrosive coating damage simulation test piece according to claim 1, wherein the distance between the test pieces is 6 meters to 10 meters.
9. The device for connecting the buried pipe corrosion protection layer damage simulation test piece according to claim 1, wherein the plurality of welding points are distributed at two ends of the buried pipeline.
10. The accessing device of the buried pipe anticorrosive coating damage simulation test piece according to claim 1, wherein a distance between welding points is 50 mm to 60 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010387246.4A CN111575717A (en) | 2020-05-09 | 2020-05-09 | Inserting device for buried pipe anticorrosive coating damage simulation test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010387246.4A CN111575717A (en) | 2020-05-09 | 2020-05-09 | Inserting device for buried pipe anticorrosive coating damage simulation test piece |
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| Publication Number | Publication Date |
|---|---|
| CN111575717A true CN111575717A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010387246.4A Pending CN111575717A (en) | 2020-05-09 | 2020-05-09 | Inserting device for buried pipe anticorrosive coating damage simulation test piece |
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| CN (1) | CN111575717A (en) |
Cited By (3)
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| CN113983361A (en) * | 2021-09-15 | 2022-01-28 | 北京市燃气集团有限责任公司 | 3PE anticorrosive coating peeling and shielding risk judging method and device based on test piece |
| CN114196958A (en) * | 2020-09-18 | 2022-03-18 | 中国石油天然气股份有限公司 | Method for measuring cathodic protection parameters of close-distance parallel pipelines |
| CN114414461A (en) * | 2021-12-17 | 2022-04-29 | 中石化管道技术服务有限公司 | Protective potential satellite synchronous measurement device with positioning current pipeline and method |
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Cited By (3)
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| CN113983361A (en) * | 2021-09-15 | 2022-01-28 | 北京市燃气集团有限责任公司 | 3PE anticorrosive coating peeling and shielding risk judging method and device based on test piece |
| CN114414461A (en) * | 2021-12-17 | 2022-04-29 | 中石化管道技术服务有限公司 | Protective potential satellite synchronous measurement device with positioning current pipeline and method |
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