WO2022241909A1 - Appareil de collecte de données de pipeline de type embarqué - Google Patents

Appareil de collecte de données de pipeline de type embarqué Download PDF

Info

Publication number
WO2022241909A1
WO2022241909A1 PCT/CN2021/102899 CN2021102899W WO2022241909A1 WO 2022241909 A1 WO2022241909 A1 WO 2022241909A1 CN 2021102899 W CN2021102899 W CN 2021102899W WO 2022241909 A1 WO2022241909 A1 WO 2022241909A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure transmitter
probe
installation box
data collector
pipeline
Prior art date
Application number
PCT/CN2021/102899
Other languages
English (en)
Chinese (zh)
Inventor
黄剑
杨春峰
周东君
陈智勇
Original Assignee
永高股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 永高股份有限公司 filed Critical 永高股份有限公司
Publication of WO2022241909A1 publication Critical patent/WO2022241909A1/fr

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0061Electrical connection means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0092Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Definitions

  • the application relates to the technical field of data acquisition equipment, in particular to an embedded pipeline data acquisition device.
  • the pipeline data collector collects and transmits the data of the pipeline, so that the pipeline management staff can find the abnormality of the pipeline data in time, and then facilitate the timely processing of the pipeline according to the abnormal situation of the pipeline data.
  • the existing pipeline data collector Most of them are installed near the pipeline and collect data from the outside of the pipeline to the inside of the pipeline through components, but the existing data collectors have the following problems: the existing data collectors cannot be embedded in the pipeline, resulting in the data collector probes not being able to Directly enter the pipeline to collect data, resulting in inaccurate pipeline data collected by the data collector.
  • This application provides an embedded pipeline data acquisition device, which can improve the existing data collectors that cannot be embedded in the pipeline, resulting in the probe of the data collector not being able to directly enter the inside of the pipeline to collect data, which in turn causes the data collector to collect The problem of inaccurate pipeline data.
  • the application provides an embedded pipeline data acquisition device, which may include a pressure transmitter, and an installation box may be provided on one side of the pressure transmitter, and the installation box may be snapped together with the pressure transmitter, and the inside of the installation box may be A data collector is installed, and a probe can be connected to the back end of the data collector. The probe can pass through the inside of the pressure transmitter and protrude from the bottom of the pressure transmitter.
  • the back of the data collector and the top of the pressure transmitter can pass through The connecting wires are connected together, the antenna can be connected to the top of the installation box, and the antenna and the back of the pressure transmitter can be connected together; the pressure transmitter can be easily installed on the pipeline, which is convenient for monitoring the pressure and liquid level inside the pipeline, and the installation
  • the box can facilitate the installation of the data collector and the installation and disassembly of the data collector.
  • the probe can be easily embedded in the pipeline with the pressure transmitter, so as to facilitate the collection and transmission of the data inside the pipeline.
  • the data is transmitted to the data collector, which is convenient for the data collector to transmit the collected data to the terminal, and the antenna can facilitate the data collector to transmit and receive data wirelessly.
  • a display panel can be provided on the front of the pressure transmitter, and a connecting head can be provided in the middle of the top of the pressure transmitter, and a connecting pipe can be provided on the side of the pressure transmitter; the display panel can be convenient for displaying the measured value of the pressure transmitter Data, it is convenient for the staff to pay attention to the value of the pressure transmitter.
  • the connector can be easily matched with the connecting line, which is convenient for the connecting line to connect the pressure transmitter and the data collector together.
  • the connecting tube can facilitate the installation and removal of the probe, which is convenient for the probe use.
  • the bottom of the arc surface of the pressure transmitter can be provided with a mounting column, the arc surface of the mounting column can be provided with a hexagonal screw head, and the bottom end of the mounting column can be provided with a connecting stud; the mounting column can facilitate the installation of the installation box, thereby It is convenient to install the data collector in the installation box.
  • the hexagonal screw head can be easily matched with the wrench, so that it is convenient to tighten the pressure transmitter through the wrench, which is convenient for the installation and fixing of the pressure transmitter.
  • the connecting stud can facilitate the installation of the pressure transmitter on the pipeline , to facilitate the installation and use of pressure transmitters.
  • a guide tube can be provided inside the pressure transmitter, and an inlet tube can be provided on the arc surface of the pressure transmitter.
  • the inlet tube can communicate with the guide tube, and the bottom of the pressure transmitter can be provided with a cable.
  • the bottom of the cable can be equipped with a liquid level sensor;
  • the guide tube can facilitate the guidance of the probe, facilitate the installation and fixing of the probe, and facilitate the use of the guide tube;
  • the inlet tube can facilitate the probe to pass through the pressure transmitter from the inlet tube, which is convenient
  • the probe is inserted into the pipeline to collect data from the pipeline, and the cable can be easily used with the liquid level sensor, so that the liquid level sensor can measure the liquid level inside the pipeline.
  • the back of the installation box near the top can be provided with an outlet, and the top of the installation box can be provided with threaded holes, and the bottom surface of the installation box can be symmetrically provided with compression knobs; the outlet can facilitate the wires connected to the data collector from The back of the installation box passes through, which is convenient for the data collector and other components to be connected together.
  • the threaded hole can be easily matched with the antenna, which is convenient for the installation and fixing of the antenna, so that the antenna can be stabilized on the top of the installation box, and the compression knob can be convenient for fixing the data sensor.
  • the data sensor is stably inside the installation box, which facilitates the use of the data sensor, and the data collector with this structure can be easily installed and disassembled, which is convenient for the use of the data collector.
  • a connecting rod can be provided at the bottom end of the back of the installation box, a bayonet can be provided at the end of the connecting rod that is not connected with the installation box, a collar can be provided at the bayonet, and both sides of the collar and the bayonet can be provided with
  • the connecting edge, the collar and the connecting rod can be connected together by connecting bolts; the connecting rod can facilitate the connection between the installation box and the pressure transmitter, which is convenient for the installation box to cooperate with the use of the pressure transmitter, and the bayonet can be easily matched with the card ring, so that the installation box can be snapped on the installation column of the pressure transmitter conveniently, and the connecting edge can be easily matched with the connecting bolt, so that it is convenient to connect the collar and bayonet together through the connecting bolt, so that the installation box can be stabilized on the pressure transmitter usage of.
  • the back of the data collector can be provided with wires, the end of the wires not connected to the data collector can be provided with a power plug, and the back of the data collector near the top can be provided with several connectors; the wires can be convenient for power connection
  • the plug is convenient to supply power to the data collector, which is convenient for the use of the data collector, and the connector can be conveniently matched with the connecting wire, antenna and probe, so as to facilitate the connection of the connecting wire, antenna and probe with the data collector.
  • a probe head can be provided at the bottom of the probe, and an adapter cap can be provided at the position where the probe is aligned with the inlet pipe, and a transmission line can be provided where the probe head is aligned with the middle of the adapter cap, and the transmission line is aligned with the connector on the back of the data collector.
  • the position can be equipped with an installation head; the detection head can facilitate the collection of data inside the pipeline, which is convenient for the data collector to directly collect the data inside the pipeline, and the adapter cap can be easily matched with the probe, so that the probe can be installed stably
  • the adapter cap can also facilitate the sealing of the inlet pipe
  • the transmission line can facilitate the transmission of the data collected by the probe to the data collector
  • the installation head can facilitate the connection of the probe and the data collector, and facilitate the probe to cooperate with the data collector usage of.
  • a threaded post can be provided at the bottom of the antenna, and the threaded post and the threaded hole can be matched, and a transmission line can be provided on the side of the antenna, and the end of the transmission line not connected to the antenna can be provided with a mounting head; the threaded post can facilitate the installation of the antenna And fixed, it is convenient for the stable use of the antenna, and the transmission line can be easily matched with the installation head, so that the antenna and the data collector can be connected together, and the antenna can receive or transmit data.
  • the beneficial effect of this application is: the application improves and optimizes the structure of the pipeline data collector so that the probe of the pipeline data collector can be embedded inside the pipeline, thereby facilitating the collection of data inside the pipeline
  • this data collector can cooperate with the pressure transmitter, and can collect and transmit the data of the pressure transmitter to the terminal, avoiding the need for the staff to collect the data on site, which greatly facilitates the collection and processing of pipeline data .
  • Fig. 1 is the structural representation of the embedded data acquisition device of the present application
  • Fig. 2 is the structural representation of the pressure transmitter of the present application
  • Fig. 3 is the structural representation of the installation box of the present application.
  • Fig. 4 is the structural representation of the data collector of the present application.
  • Fig. 5 is the structural representation of the probe head of the present application.
  • Fig. 6 is a schematic structural diagram of the antenna of the present application.
  • an embedded pipeline data acquisition device including a pressure transmitter 1, an installation box 2 may be provided on one side of the pressure transmitter 1, and the installation box 2 may be connected to the pressure transmitter 1 are snapped together, and the data collector 3 can be installed inside the installation box 2, and the rear end of the data collector 3 can be connected to the probe 4, and the probe 4 can pass through the inner side of the pressure transmitter 1 and connect from the bottom of the pressure transmitter 1 Protruding out, the back of the data collector 3 and the top of the pressure transmitter 1 can be connected together through the connecting wire 6, the top of the installation box 2 can be connected to the antenna 5, and the antenna 5 can be connected to the back of the pressure transmitter 1;
  • the pressure transmitter 1 can be easily installed on the pipeline to monitor the pressure and liquid level inside the pipeline.
  • the installation box 2 can facilitate the installation of the data collector 3 and the installation and disassembly of the data collector 3.
  • the probe 4 can be easily matched
  • the pressure transmitter 1 is embedded inside the pipeline, so as to facilitate the collection and transmission of data inside the pipeline.
  • the connecting line 6 can facilitate the transmission of the data inside the pressure transmitter 1 to the data collector 3, so that the data collector 3 can collect the collected data Transmission to the terminal, the antenna 5 can facilitate the wireless transmission and reception of data by the data collector 3; this structure enables the probe 4 of the pipeline data collector 3 to be embedded inside the pipeline, thereby facilitating the collection of data inside the pipeline.
  • the data collector 3 can cooperate with the pressure transmitter 1, and can collect and transmit the data of the pressure transmitter 1 to the terminal, avoiding the need for the staff to go to the site to collect the data, which greatly facilitates the collection and processing of pipeline data.
  • the front of the pressure transmitter 1 can be provided with a display panel 11, and the middle part of the top of the pressure transmitter 1 can be provided with a connector 12, and the side of the pressure transmitter 1 can be provided with a connecting pipe;
  • the display panel 11 can be It is convenient to display the data measured by the pressure transmitter 1, and it is convenient for the staff to pay attention to the value of the pressure transmitter 1.
  • the connector 12 can be easily matched with the connecting line 6, and it is convenient for the connecting line 6 to connect the pressure transmitter 1 and the data collector 3 in the Together, the connecting pipe can facilitate the installation and disassembly of the probe 4, and facilitate the use of the probe 4; the bottom of the arc surface of the pressure transmitter 1 can be provided with a mounting column 14, and the arc surface of the mounting column 14 can be provided with a hexagonal screw head 15.
  • the bottom end of the column can be provided with a connecting stud 16; the mounting column 14 can facilitate the installation of the installation box 2, thereby facilitating the installation of the data collector 3 in the installation box 2, and the hexagonal screw head 15 can be convenient for matching with a wrench, so that it is convenient to tighten the pressure transmission through the wrench
  • the device 1 is convenient for the installation and fixing of the pressure transmitter 1, and the connecting stud 16 can facilitate the installation of the pressure transmitter 1 on the pipeline, which is convenient for the installation and use of the pressure transmitter 1;
  • the guide pipe 17, the arc surface of the pressure transmitter 1 can be provided with the inlet pipe 13, the inlet pipe 13 can communicate with the guide pipe 17, and the bottom of the pressure transmitter 1 can be provided with a cable 18, and the bottom of the cable 18 can be A liquid level sensor 19 is provided; the guide pipe 17 can be convenient to guide the probe 4, facilitate the installation and fixing of the probe 4, facilitate the use of the guide pipe 17, and the inlet pipe 13 can facilitate the pressure change of the probe 4 from the inlet pipe 13.
  • the transmitter 1 is convenient for
  • installation box 2 back sides can be provided with outlet 21 near the position of top, and installation box 2 tops can be provided with threaded hole 22, and installation box 2 bottom surfaces can be symmetrically provided with compression knob 23;
  • the wire 31 that is convenient to be connected with the data collector 3 passes through the back of the installation box 2 to facilitate the connection of the data collector 3 and other components.
  • the compression knob 23 can facilitate the fixing of the data sensor, which is convenient for the data sensor to be stabilized inside the installation box 2, and facilitates the use of the data sensor, and the data collector 3 of this structure can be easily installed and disassembled, which is convenient
  • the connecting rod 24 can facilitate the connection between the installation box 2 and the pressure transmitter 1 Together, it is convenient for the installation box 2 to cooperate with the use of the pressure transmitter 1, the bayonet 25 can be easily matched with the collar 26, so that the installation box 2 can be snapped on the installation column 14 of the pressure transmitter 1, and
  • data collector 3 back sides can be provided with lead wire 31, and an end that lead wire 31 is not connected with data collector 3 can be provided with electric plug 32, and the position near the top of data collector 3 back side can be provided with several connections.
  • Antenna 5 and probe 4 are connected with data collector 3 together.
  • the bottom end of the probe 4 can be provided with a probe head 41, and the position where the probe 4 is aligned with the inlet pipe 13 can be provided with an adapter cap 42, and the middle part of the probe head 41 aligned with the adapter cap 42 can be provided with a transmission line 43 , the position of transmission line 43 alignment data collector 3 back connector 12 can be provided with installation head 44;
  • the cap 42 can be easily matched with the probe 4, so that the probe 4 can be stably installed on the pressure transmitter 1.
  • the adapter cap 42 can also facilitate the sealing of the inlet pipe 13, and the transmission line 43 can facilitate the transmission of the data collected by the probe 4.
  • the installation head 44 can facilitate the connection of the probe 4 and the data collector 3, and facilitate the use of the probe 4 in conjunction with the data collector 3.
  • antenna 5 bottoms can be provided with threaded post 51, and threaded post 51 can match with threaded hole 22, and antenna 5 side can be provided with transmission line 43, and the end that transmission line 43 is not connected with antenna 5 can be provided with Mounting head 44; threaded column 51 can facilitate the installation and fixing of antenna 5, and facilitate the stable use of antenna 5, and the transmission line 43 can be convenient to cooperate with mounting head 44, so as to facilitate the connection of antenna 5 and data collector 3, and facilitate antenna 5 to receive Or transfer data.
  • the application provides an embedded pipeline data acquisition device, including a pressure transmitter, an installation box is provided on one side of the pressure transmitter, and the installation box is snapped together with the pressure transmitter, and the installation box A data collector is installed inside, and a probe is connected to the rear end of the data collector. The probe passes through the inner side of the pressure transmitter and protrudes from the bottom of the pressure transmitter. The back of the data collector and the pressure transmitter The top ends are connected together by connecting wires, an antenna is connected to the top of the installation box, and the antenna is connected to the back of the pressure transmitter.
  • the embedded pipeline data acquisition device can improve the problem that the existing data collector cannot be embedded in the pipeline, resulting in that the probe of the data collector cannot directly enter the inside of the pipeline to collect data, which in turn leads to inaccurate pipeline data collected by the data collector.
  • This application improves and optimizes the structure of the pipeline data collector, so that the probe of the pipeline data collector can be embedded in the pipeline, thereby facilitating the collection of data inside the pipeline.
  • this data collector can cooperate with the pressure transmitter. It can collect and transmit the data of the pressure transmitter to the terminal, avoiding the need for the staff to go to the site to collect the data, which greatly facilitates the collection and processing of pipeline data.
  • the pressure transmitter, data collector, and embedded pipeline data acquisition device of the present application are reproducible and can be applied in various industrial applications.
  • the pressure transmitter of the present application can be applied to an embedded pipeline data acquisition device that needs to realize convenient pipeline data acquisition.

Abstract

La présente demande concerne un appareil de collecte de données de pipeline de type embarqué, qui comprend un transmetteur de pression, un boîtier d'installation étant disposé sur un côté du transmetteur de pression, et le boîtier d'installation venant en prise avec le transmetteur de pression ; un dispositif de collecte de données est installé à l'intérieur du boîtier d'installation, une sonde est connectée à une extrémité postérieure du dispositif de collecte de données, la sonde traverse un côté interne du transmetteur de pression et fait saillie à partir d'une extrémité inférieure du transmetteur de pression, et une face arrière du dispositif de collecte de données est connectée à une extrémité supérieure du transmetteur de pression au moyen d'un fil de connexion ; une antenne est connectée à une extrémité supérieure du boîtier d'installation, et l'antenne est connectée à une face arrière du transmetteur de pression. La présente demande résout le problème de l'impossibilité d'intégrer un dispositif de collecte de données sur un pipeline, entraînant l'impossibilité pour une sonde du dispositif de collecte de données d'entrer directement dans le pipeline et de collecter des données, et entraînant par conséquent l'inexactitude des données du pipeline collectées par le dispositif de collecte de données. Grâce à l'amélioration et à l'optimisation d'une structure d'un dispositif de collecte de données de pipeline, une sonde du dispositif de collecte de données de pipeline peut être embarquée dans un pipeline.
PCT/CN2021/102899 2021-05-18 2021-06-29 Appareil de collecte de données de pipeline de type embarqué WO2022241909A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110539004.7 2021-05-18
CN202110539004.7A CN113218453A (zh) 2021-05-18 2021-05-18 一种嵌入式管道数据采集装置

Publications (1)

Publication Number Publication Date
WO2022241909A1 true WO2022241909A1 (fr) 2022-11-24

Family

ID=77092603

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/102899 WO2022241909A1 (fr) 2021-05-18 2021-06-29 Appareil de collecte de données de pipeline de type embarqué

Country Status (2)

Country Link
CN (1) CN113218453A (fr)
WO (1) WO2022241909A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150075293A1 (en) * 2013-09-17 2015-03-19 Dieterich Standard, Inc. Customizable averaging pitot tube probe and process variable transmitter
CN104990572A (zh) * 2015-06-26 2015-10-21 中国石油化工股份有限公司胜利油田分公司 一种油井专用一体化温、压变送器
CN107036667A (zh) * 2017-03-09 2017-08-11 浙江钛合仪器有限公司 一种电磁流量计和压力传感器的组合装置及安装方法
CN110398274A (zh) * 2019-07-08 2019-11-01 环宇智谷(北京)科技有限公司 一种nb-iot智能无线液位变送器
CN112014030A (zh) * 2020-10-20 2020-12-01 南京沃天科技有限公司 一种柔性压力传感器校准装置
CN213022093U (zh) * 2020-07-15 2021-04-20 宝鸡睿科传感器有限公司 一种无线网关压力变送器设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210426692U (zh) * 2019-07-08 2020-04-28 环宇智谷(北京)科技有限公司 Nb-iot智能无线液位变送器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150075293A1 (en) * 2013-09-17 2015-03-19 Dieterich Standard, Inc. Customizable averaging pitot tube probe and process variable transmitter
CN104990572A (zh) * 2015-06-26 2015-10-21 中国石油化工股份有限公司胜利油田分公司 一种油井专用一体化温、压变送器
CN107036667A (zh) * 2017-03-09 2017-08-11 浙江钛合仪器有限公司 一种电磁流量计和压力传感器的组合装置及安装方法
CN110398274A (zh) * 2019-07-08 2019-11-01 环宇智谷(北京)科技有限公司 一种nb-iot智能无线液位变送器
CN213022093U (zh) * 2020-07-15 2021-04-20 宝鸡睿科传感器有限公司 一种无线网关压力变送器设备
CN112014030A (zh) * 2020-10-20 2020-12-01 南京沃天科技有限公司 一种柔性压力传感器校准装置

Also Published As

Publication number Publication date
CN113218453A (zh) 2021-08-06

Similar Documents

Publication Publication Date Title
CN105403348B (zh) 一种可编程高集成多通道压力测试装置
CN110726879A (zh) 基于精准测量技术的输电线路杆塔接地电阻监测系统
WO2022241909A1 (fr) Appareil de collecte de données de pipeline de type embarqué
CN207717041U (zh) 一种测量带电导线线径的装置
CN201176872Y (zh) 井下参数检测仪
CN213275920U (zh) 一种便携式计量二次回路查线器装置
CN113916731A (zh) Hct测量装置及系统以及装有该装置的化学发光仪器
CN202229877U (zh) 一种压力变送器
CN216925797U (zh) 一种热力管道振动检测装置
CN105703315B (zh) 全封闭式开关设备电缆终端头、组装方法及测温系统
CN208688687U (zh) 一种信息集中处理装置
CN209559711U (zh) 粉尘浓度测量器及粉尘浓度测量套件
CN216348433U (zh) 一种用于风电法兰的检具
CN210893021U (zh) 一种用于三维测量的内窥镜
CN214173461U (zh) 一种插入式电磁流量计
CN217133282U (zh) 一种电能计量试验适配器
CN2852070Y (zh) 一体化液位/界位检测仪表
CN215984977U (zh) 一种监测装置
CN101093250A (zh) 高压电流互感器计量误差实时在线监测方法及监测装置
CN215573349U (zh) 一种辅助巡检用测振仪
CN213779318U (zh) 一种一体化温度变送器
CN217687344U (zh) 一种可组网的流量传感器
CN210346983U (zh) 一种具有通信功能的无线压力计
CN215297222U (zh) 一种蒸馏水检测电导仪
CN205593688U (zh) 一种便携式瓷柱绝缘子应力检测装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21940358

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE