CN114323434A - Pressure transmitter calibration device and calibration method - Google Patents
Pressure transmitter calibration device and calibration method Download PDFInfo
- Publication number
- CN114323434A CN114323434A CN202011086180.1A CN202011086180A CN114323434A CN 114323434 A CN114323434 A CN 114323434A CN 202011086180 A CN202011086180 A CN 202011086180A CN 114323434 A CN114323434 A CN 114323434A
- Authority
- CN
- China
- Prior art keywords
- detection
- power supply
- branch
- main
- pressure transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a pressure transmitter calibration device and a calibration method, the pressure transmitter calibration device comprises a pressure calibrator, a detection main circuit, a plurality of detection branch circuits and a rotary switch, wherein the pressure calibrator is used for detecting the current value or the voltage value of a pressure transmitter, the detection main circuit is connected with the pressure calibrator, one ends of the detection branch circuits are correspondingly connected with the pressure transmitters, the other end of each detection branch circuit is connectable with and disconnectable from the detection main circuit, when the other end of one detection branch circuit is connected with the detection main circuit, the other ends of the other detection branch circuits are disconnected with the detection main circuit, the rotary switch is connected between the detection main circuit and the detection branch circuits, and the rotary switch is used for controlling the detection branch circuits to be connected with and disconnected from the detection main circuit. The pressure transmitter calibration device provided by the embodiment of the invention has the advantages of high calibration efficiency and convenience in operation.
Description
Technical Field
The invention relates to the technical field of product detection, in particular to a pressure transmitter calibration device and a pressure transmitter calibration method.
Background
The pressure transmitter is a pressure sensor which takes output as a standard signal, and is an instrument which receives a pressure variable and converts the pressure variable into a standard output signal in proportion. It can convert the physical pressure parameters sensed by the load cell sensor into standard electric signals for the secondary instruments such as indicating alarm, recorder and regulator to measure, indicate and regulate the process. In order to check whether the pressure transmitter is qualified, a pressure check meter is required to be used for detection.
In the related art, the calibration device of each pressure transmitter can only calibrate a single pressure transmitter, namely, the calibration mode is a one-to-one calibration mode, the calibration efficiency is low, and the operation is inconvenient.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the first aspect of the invention provides a pressure transmitter calibration device, which is convenient to operate, can calibrate a plurality of pressure transmitters and has high calibration efficiency.
Embodiments of a second aspect of the present invention provide a method of calibrating a pressure transmitter.
A verification device for a pressure transmitter according to an embodiment of the first aspect of the present invention comprises: the pressure calibrator is used for calibrating the current value or the voltage value of the pressure transmitter; the pressure check meter comprises a pressure check meter, a detection main road and a pressure control main circuit, wherein the detection main road is connected with the pressure check meter; the system comprises a plurality of detection branches, a plurality of pressure transmitters and a plurality of pressure sensors, wherein one end of each detection branch is correspondingly connected with the corresponding pressure transmitter, the other end of each detection branch is connectable with and disconnectable from a main detection path, and when the other end of one detection branch is connected with the main detection path, the other ends of the rest detection branches are disconnected with the main detection path; the rotary switch is connected between the main detection path and the branch detection path, and is used for controlling the branch detection path to be connected with and disconnected from the main detection path.
According to the pressure transmitter calibration device provided by the embodiment of the invention, the detection main path and the plurality of detection branch paths which can be connected with and disconnected from the detection main path are arranged, the plurality of detection branch paths are correspondingly connected with the plurality of pressure transmitters, the plurality of pressure transmitters can be detected one by one, and in the process, the unused pressure transmitters can be calibrated only by rotating the rotary switch arranged between the detection branch paths and the detection main path, so that the pressure transmitters are not required to be disassembled and assembled, the calibration efficiency is high, and the operation is convenient.
In some embodiments, the calibration device of the pressure transmitter further includes a plurality of indicating devices, the plurality of indicating devices correspond to the plurality of detecting branches one to one, and the indicating devices can give an indication when the detecting branch corresponding to the indicating device is connected with the main detecting branch.
In some embodiments, the verification device of the pressure transmitter further comprises: a battery pack; a power supply main circuit connected with the battery pack; the power supply system comprises a plurality of power supply branches, wherein one ends of the plurality of power supply branches are correspondingly connected with the plurality of indicating devices, each power supply branch is connectable with and disconnectable from the power supply main circuit, and when one power supply branch is connected with the power supply main circuit, the rest power supply branches are disconnected with the power supply main circuit.
In some embodiments, the rotary switch includes a first rotary switch and a second rotary switch, the first rotary switch is used for controlling the on/off of the plurality of detection branches and the main detection circuit, and the second rotary switch is used for controlling the on/off of the plurality of power supply branches and the main power supply circuit.
In some embodiments, the indicating device is an indicator light or a buzzer.
The verification method of the pressure transmitter according to the embodiment of the second aspect of the present invention employs any one of the verification apparatuses for detecting a pressure transmitter described above, and the verification method includes: introducing current or voltage to the pressure transmitter through the pressure calibrator; correspondingly connecting a plurality of detection branches with a plurality of pressure transmitters; and controlling the main detection path to be connected with one of the detection branches through the rotary switch, and disconnecting the other detection branches from the main detection path so as to verify the pressure transmitter corresponding to the detection branch.
According to the pressure transmitter calibration method provided by the embodiment of the invention, the pressure transmitter calibration device is convenient to operate and high in calibration efficiency
In some embodiments, the verification method further comprises: when a detection branch is connected with the main detection branch, an indicating device corresponding to the detection branch gives an indication.
In some embodiments, the verification method further comprises: the power supply main circuit is controlled to be communicated with one of the power supply branches through the rotary switch, and the rest of the power supply branches are disconnected with the power supply main circuit.
In some embodiments, when the first rotary switch controls the one detection branch to communicate with the main detection branch, the second rotary switch controls the power supply branch opposite to the inspection branch to communicate with the main power supply branch.
Drawings
FIG. 1 is a schematic diagram of a verification device for a pressure transmitter according to an embodiment of the present invention.
Reference numerals:
a calibration device 1 of the pressure transmitter;
a pressure transmitter 10; a first pressure transmitter 101; a second pressure transmitter 102;
detecting a main road 20;
a detection branch 30; a first detection branch 301; a second detection branch 302;
a rotary switch 40; a first rotary switch 401; a second rotary switch 402;
an indicating device 50; a first indicating device 501; a second indicating device 502;
a battery pack 60;
a main power supply circuit 70;
a power supply branch 80; a first power supply branch 801; a second power supply branch 802;
a pressure check gauge 90.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, a verification device 1 of a pressure transmitter 10 according to an embodiment of the present invention includes a pressure verifier 90, a main detection path 20, a plurality of branch detection paths 30, and a rotary switch 40.
The main detection path 20 is connected to the pressure checking gauge 90, one end of each of the plurality of detection branches 30 is correspondingly connected to the plurality of pressure transmitters 10, the other end of each of the detection branches 30 is connectable to and disconnectable from the main detection path 20, and when the other end of one of the detection branches 30 is connected to the main detection path 20, the other ends of the remaining detection branches 30 are disconnected from the main detection path 20.
As shown in fig. 1, the plurality of detection branches 30 includes a first detection branch 301 and a second detection branch 302, the plurality of pressure transmitters 10 includes a first pressure transmitter 101 and a second pressure transmitter 102, one end of the first detection branch 301 is connected to the first pressure transmitter 101, and one end of the second detection branch 302 is connected to the second pressure transmitter 102.
When the first pressure transmitter 101 is detected, the first detection branch 301 is controlled to be connected with the main detection circuit 20, and the second detection branch 302 is controlled to be disconnected with the main detection circuit 20; when the second pressure transmitter 102 is detected, the second detection branch 302 is controlled to be connected with the main detection circuit 20, and the first detection branch 301 is disconnected with the main detection circuit 20.
Specifically, the rotary switch 40 is connected between the main detection path 20 and the detection branch path 30, and the rotary switch 40 is used to control the connection and disconnection of the detection branch path 30 and the main detection path 20. It is understood that when testing pressure transmitters 10 in batches, a plurality of sensing branches 30 can be connected to the main sensing branch 20 one by turning the rotary switch 40 to achieve a one-to-one calibration of the plurality of pressure transmitters 10.
According to the pressure transmitter calibration device provided by the embodiment of the invention, the detection main path and the plurality of detection branch paths which can be connected with and disconnected from the detection main path are arranged, the plurality of detection branch paths are correspondingly connected with the plurality of pressure transmitters, the plurality of pressure transmitters can be detected one by one, and in the process, the unused pressure transmitters can be calibrated only by rotating the rotary switch arranged between the detection branch paths and the detection main path, so that the pressure transmitters are not required to be disassembled and assembled, the calibration efficiency is high, and the operation is convenient.
Further, the calibration device 1 of the pressure transmitter 10 further includes a plurality of indicating devices 50, the plurality of indicating devices 50 correspond to the plurality of detecting branches 30 one by one, and the indicating devices 50 can give an indication when the detecting branch 30 corresponding thereto is connected with the main detecting path 20. Therefore, detection personnel can determine the detection progress according to the indication given by the indicating device, and repeated detection or missed detection is avoided.
In some embodiments, the verification device 1 of the pressure transmitter 10 further includes a battery pack 60, a main power supply path 70 and a plurality of power supply branches 80, the main power supply path 70 is connected to the battery pack 60, one end of the plurality of power supply branches 80 is correspondingly connected to the plurality of indicating devices 50, each power supply branch 80 is connectable to and disconnectable from the main power supply path 70, and when one power supply branch 80 is connected to the main power supply path 70, the rest of the power supply branches 80 are disconnected from the main power supply path 70.
As shown in fig. 1, the plurality of power supply branches 80 includes a first power supply branch 801 and a second power supply branch 802, the plurality of indication devices 50 includes a first indication device 501 and a second indication device 502, one end of the first power supply branch 801 is connected to the first indication device 501, and one end of the second power supply branch 802 is connected to the second indication device 502.
Further, the rotary switch 40 includes a first rotary switch 401 and a second rotary switch 402, the first rotary switch 401 is used for controlling the on/off of the plurality of detection branches 30 and the detection main circuit 20, and the second rotary switch 402 is used for controlling the on/off of the plurality of power supply branches 80 and the power supply main circuit 70.
Specifically, as shown in fig. 1, when the first pressure transmitter 101 is detected, the first rotary switch 401 communicates with the first detection branch 301 and the main detection branch 20, and at this time, the second rotary switch 402 communicates with the first power supply branch 801 and the main power supply branch 70, and the first indicating device 501 is powered on and gives an indication.
When the second pressure transmitter 102 is detected, the second rotary switch 402 connects the second detection branch 302 and the main detection path 20, and at this time, the second rotary switch 402 connects the second power supply branch 802 and the main power supply path 70, and the second indicating device 502 is powered on and gives an indication.
It can be understood that when an operator detects a corresponding pressure transmitter 10, the indicating device 50 corresponding to the pressure transmitter 10 is simultaneously powered on and gives an indication, so that the operator can conveniently confirm the detection progress.
Further, the indicating device 50 is an indicator lamp or a buzzer.
According to the pressure transmitter calibration method provided by the embodiment of the invention, the calibration device for detecting the pressure transmitter is adopted, and the calibration method comprises the following steps: the plurality of detection branch circuits are correspondingly connected with the plurality of pressure transmitters, the main detection circuit is controlled to be connected with one of the plurality of detection branch circuits through the rotary switch, the rest detection branch circuits are disconnected with the main detection circuit, and current or voltage is introduced into the pressure transmitters through the pressure calibrator so as to calibrate the pressure transmitters corresponding to the detection branch circuits.
Specifically, when the verification device of the pressure transmitter detects one of the plurality of pressure transmitters, the rotary switch controls the detection branch circuit corresponding to the one pressure transmitter to be connected with the detection main circuit, and the verification device of the pressure transmitter inputs voltage or current to the pressure transmitter through the connection of the detection main circuit and the detection branch circuit and detects a current value or a voltage value flowing through the pressure transmitter so as to judge whether the pressure transmitter is qualified.
When the checking device of the pressure transmitter detects another pressure transmitter in the plurality of pressure transmitters, the rotary switch controls the detection branch circuit corresponding to the other pressure transmitter to be connected with the detection main circuit, the detection process is repeated, and batch detection of the plurality of pressure transmitters is gradually completed.
According to the pressure transmitter calibration method provided by the embodiment of the invention, the pressure transmitter calibration device is convenient to operate and high in calibration efficiency.
Further, when one detection branch is connected to the main detection branch, an indication device corresponding to the detection branch gives an indication. Therefore, the detection progress can be conveniently confirmed by an operator, and repeated detection or missed detection can be avoided.
Further, the power supply main circuit is controlled to be communicated with one of the power supply branches through the rotary switch, and the rest power supply branches are disconnected with the power supply main circuit. In other words, only one of the plurality of indicating devices is present to give an indication during the detection process.
It can be understood that, in this technical scheme, when detecting to a plurality of pressure transmitters, utilize rotary switch to connect selectively and detect branch road and detection main road, adopt the mode of detecting one by one to check a plurality of pressure transmitters, correspondingly, a plurality of indicating device also send the instruction one by one along with the progress that detects to make things convenient for measurement personnel to discern and record.
Specifically, when the first rotary switch controls one detection branch circuit to be communicated with the detection main circuit, the second rotary switch controls the power supply branch circuit opposite to the detection branch circuit to be communicated with the power supply main circuit. Therefore, when one of the pressure transmitters is detected, the corresponding indicating devices are simultaneously electrified and give out an indication, and synchronous starting is realized.
A verification device 1 of a pressure transmitter 10 according to one specific example of the present invention is described below with reference to fig. 1.
As shown in fig. 1, the verification device 1 of the pressure transmitter 10 includes a pressure verification meter 90, a main detection circuit 20, a first detection branch circuit 301, a second detection branch circuit 302, a first rotary switch 401, a battery pack 60, a main power supply circuit 70, a first main power supply circuit 70, a second rotary switch 402, a first indication device 501, and a second indication device 502.
The pressure transmitter 10 device is used for detecting a first pressure transmitter 101 and a second pressure transmitter 102, one end of a first detection branch 301 is connected with the first pressure transmitter 101, the other end of the first detection branch 301 is connected or disconnected with a main detection path 20 through a first rotary switch 401, and the main detection path 20 is connected with a pressure check meter 90.
One end of the second detection branch 302 is connected to the second pressure transmitter 102, and the other end of the second detection branch 302 is connected to or disconnected from the main detection path 20 through the first rotary switch 401.
The main power supply circuit 70 is connected to the battery pack 60, one end of the first power supply branch 801 is connected to the first indicating device 501, the other end of the first power supply device is connected to or disconnected from the main power supply circuit 70 through the second rotary switch 402, one end of the second power supply branch 802 is connected to the second indicating device 502, and the other end of the second power supply branch 802 is connected to or disconnected from the main power supply circuit 70 through the second rotary switch 402.
When the pressure check meter 90 detects the first pressure transmitter 101, the first rotary switch 401 communicates the first detection branch 301 with the detection main path 20, the pressure check meter 90 transmits current or voltage to the first pressure transmitter 101, meanwhile, the second rotary switch 402 communicates the first power supply branch 801 and the power supply main path 70, the battery pack 60 supplies power to the first indicating device 501, and the first indicating device 501 gives an indication.
When the pressure check meter 90 detects the second pressure transmitter 102, the first rotary switch 401 connects the second detection branch 302 and the detection main path 20, meanwhile, the first detection branch 301 is disconnected from the detection main path 20, the pressure check meter 90 transmits current or voltage to the second pressure transmitter 102, the second rotary switch 402 connects the second power supply branch 802 and the power supply main path 70, meanwhile, the first power supply branch 801 is disconnected from the power supply main path 70, the battery pack 60 supplies power to the second indicating device 502, and the second indicating device 502 sends an indication.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A pressure transmitter calibration apparatus, comprising:
the pressure calibrator is used for detecting a current value or a voltage value of the pressure transmitter;
the pressure check meter comprises a pressure check meter, a detection main road and a pressure control main circuit, wherein the detection main road is connected with the pressure check meter;
the system comprises a plurality of detection branches, a plurality of pressure transmitters and a plurality of pressure sensors, wherein one end of each detection branch is correspondingly connected with the corresponding pressure transmitter, the other end of each detection branch is connectable with and disconnectable from a main detection path, and when the other end of one detection branch is connected with the main detection path, the other ends of the rest detection branches are disconnected with the main detection path;
the rotary switch is connected between the main detection path and the branch detection path, and is used for controlling the branch detection path to be connected with and disconnected from the main detection path.
2. The pressure transmitter calibration apparatus according to claim 1, further comprising a plurality of indicating devices, a plurality of said indicating devices corresponding to a plurality of said detecting branches one to one, said indicating devices being capable of giving an indication when the detecting branch corresponding thereto is connected to said main detecting path.
3. The pressure transmitter verification apparatus of claim 2, further comprising: a battery pack;
a power supply main circuit connected with the battery pack;
the power supply system comprises a plurality of power supply branches, wherein one ends of the plurality of power supply branches are correspondingly connected with the plurality of indicating devices, each power supply branch is connectable with and disconnectable from the power supply main circuit, and when one power supply branch is connected with the power supply main circuit, the rest power supply branches are disconnected with the power supply main circuit.
4. The pressure transmitter calibration apparatus according to claim 3, wherein the rotary switch includes a first rotary switch for controlling on/off of the plurality of detection branches and the main detection branch, and a second rotary switch for controlling on/off of the plurality of power supply branches and the main power supply branch.
5. Verification device of a pressure transmitter according to any of claims 2-4, characterized in that the indicating means is an indicator light or a buzzer.
6. A verification method of a pressure transmitter, characterized in that the verification apparatus for detecting a pressure transmitter of any one of claims 1 to 5 is used, the verification method comprising:
introducing current or voltage to the pressure transmitter through the pressure calibrator;
correspondingly connecting a plurality of detection branches with a plurality of pressure transmitters;
and controlling the main detection path to be connected with one of the detection branches through the rotary switch, and disconnecting the other detection branches from the main detection path so as to verify the pressure transmitter corresponding to the detection branch.
7. The method of verifying a pressure transmitter of claim 6, wherein the verification apparatus for testing a pressure transmitter of claim 2 is used, the method further comprising:
when a detection branch is connected with the main detection branch, an indicating device corresponding to the detection branch gives an indication.
8. The method of verifying a pressure transmitter of claim 7, wherein the verification apparatus for testing a pressure transmitter of claim 3 is used, the method further comprising:
the power supply main circuit is controlled to be communicated with one of the power supply branches through the rotary switch, and the rest of the power supply branches are disconnected with the power supply main circuit.
9. The method of calibrating a pressure transmitter of claim 8, wherein said first rotary switch controls said one sensing branch to communicate with said main sensing path, and said second rotary switch controls said power supply branch opposite to said sensing branch to communicate with said main power supply path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086180.1A CN114323434A (en) | 2020-10-12 | 2020-10-12 | Pressure transmitter calibration device and calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086180.1A CN114323434A (en) | 2020-10-12 | 2020-10-12 | Pressure transmitter calibration device and calibration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114323434A true CN114323434A (en) | 2022-04-12 |
Family
ID=81032616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011086180.1A Pending CN114323434A (en) | 2020-10-12 | 2020-10-12 | Pressure transmitter calibration device and calibration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114323434A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886517Y (en) * | 2006-03-13 | 2007-04-04 | 上海梅山钢铁股份有限公司 | Portable multi-channel flow instrument check meter |
| CN103487209A (en) * | 2012-06-13 | 2014-01-01 | 中国石油化工股份有限公司 | Multi-station differential pressure and pressure transmitter calibration table |
| CN204128738U (en) * | 2014-09-30 | 2015-01-28 | 金卡高科技股份有限公司 | The on-line testing device of gas meter, flow meter test pressure unit |
-
2020
- 2020-10-12 CN CN202011086180.1A patent/CN114323434A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886517Y (en) * | 2006-03-13 | 2007-04-04 | 上海梅山钢铁股份有限公司 | Portable multi-channel flow instrument check meter |
| CN103487209A (en) * | 2012-06-13 | 2014-01-01 | 中国石油化工股份有限公司 | Multi-station differential pressure and pressure transmitter calibration table |
| CN204128738U (en) * | 2014-09-30 | 2015-01-28 | 金卡高科技股份有限公司 | The on-line testing device of gas meter, flow meter test pressure unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2567968C (en) | Measuring gas meter and volume corrector accuracy | |
| US9128163B2 (en) | Voltage measuring apparatus for plural battery | |
| US20040189309A1 (en) | Electronic battery tester cable | |
| EP2081039B1 (en) | Detachable battery status alarm and battery detector thereof | |
| US8432154B2 (en) | Multimeter having communications via measurement terminals and communication system for same | |
| CN102346242B (en) | The calibration of conductivity measurement system | |
| CN102809463B (en) | Baroceptor is scaling method and device in batches | |
| CN108548968A (en) | The performance testing device and test method of battery management system | |
| US8175839B2 (en) | Wireless interface for a plurality of transducers | |
| WO2000062049A1 (en) | Electronic battery tester | |
| JP2013229201A (en) | Calibration device for charge and discharge power supply, charge and discharge testing device, and calibration method | |
| CN203132741U (en) | Thermal resistance temperature transmitter calibration device | |
| KR20190033279A (en) | Battery pack diagnostic apparatus | |
| CN103698691B (en) | Electric car bridge board automatic testing calibration method | |
| US20220384858A1 (en) | Battery monitoring system | |
| KR20190125906A (en) | Apparatus for diagnosis of battery | |
| CN114323434A (en) | Pressure transmitter calibration device and calibration method | |
| CN107942140A (en) | Detect the measuring system and detection method of satellite power supply control system interface impedance | |
| US20110167919A1 (en) | Vacuum measuring device with interchangeable sensors | |
| CN114814706B (en) | Testing device and method for online self-calibration of mutual inductor | |
| CN112033575B (en) | On-site calibration method and device for on-line monitoring system of power valve control storage battery pack | |
| CN2809595Y (en) | Self-correction mutual-correction device for PH meter and ion meter | |
| CN220288875U (en) | Calibration and verification integrated frame and testing device with same | |
| KR101181747B1 (en) | Testing Device for Temperature Control Sensor of Aircraft | |
| CN215448258U (en) | Temperature sensor detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |