CN109827668B - High-precision temperature measuring instrument - Google Patents
High-precision temperature measuring instrument Download PDFInfo
- Publication number
- CN109827668B CN109827668B CN201910220947.6A CN201910220947A CN109827668B CN 109827668 B CN109827668 B CN 109827668B CN 201910220947 A CN201910220947 A CN 201910220947A CN 109827668 B CN109827668 B CN 109827668B
- Authority
- CN
- China
- Prior art keywords
- expansion
- chamber
- detection
- measuring instrument
- temperature measuring
- 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.)
- Active
Links
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a high-precision temperature measuring instrument, and particularly relates to the field of temperature measuring instruments. The invention can detect whether the expansion precision of the three expansion components is consistent or not or whether the filling amount of the detection liquid is consistent or not by utilizing the three detection channels, can realize self-detection on the measuring instrument, has low detection cost, and jacks up the movable plug after converging three jacking air flows, so that the jacking stroke of the movable plug is larger, thereby reducing the error to be lower and increasing the detection precision when detecting the error.
Description
Technical Field
The invention relates to the technical field of temperature measuring instruments, in particular to a high-precision temperature measuring instrument.
Background
There are many existing temperature measuring instruments, and the temperature measurement is realized by the principle that when the temperature of an object changes, some properties of the object change along with the change. However, the thermometer can be made without arbitrarily selecting a change in a certain physical property. The physical property of the object for temperature measurement requires continuous and single value change with temperature, is not related to other factors, has good reproducibility and is convenient for accurate measurement. At present, thermometers manufactured according to the action principle mainly comprise an expansion type thermometer, a pressure type thermometer, a resistance thermometer, a thermocouple height angry meter, a radiation pyrometer and the like. They are made by using the principle that the expansion, pressure, resistance, thermoelectric force and radiation property of the object change with the temperature.
The expansion type thermometer is a thermometer manufactured by utilizing the principle that an object expands when heated, and mainly comprises three types, namely a liquid expansion type thermometer, a solid expansion type thermometer and a pressure type thermometer. The most common of the liquid expansion thermometers is the glass tube thermometer. The pressure thermometer is a mechanical instrument which judges a temperature value by measuring the pressure of a working medium by utilizing the property that the pressure of the working medium in a closed volume changes along with the temperature.
However, after these temperature measuring instruments are used for a long time, various errors may occur, people cannot know quickly, and temperature measuring errors and accuracy of temperature are not high.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a high-precision temperature measuring instrument, which can detect whether the expansion precision of three expansion assemblies is consistent or whether the filling amount of detection liquid is consistent by using three detection channels, and the measuring instrument itself can realize self-detection with low detection cost, and the movable plug is jacked after three jacked air flows are merged, so that the jacking stroke of the movable plug is larger, and when an error is detected, the error is reduced to be lower, and the detection precision is increased.
In order to achieve the purpose, the invention provides the following technical scheme: a high-precision temperature measuring instrument comprises an upper shell and a lower shell, wherein the lower shell is fixedly arranged at the bottom of the upper shell, a reading hollow pipe is arranged inside the upper shell, a movable plug is arranged inside the reading hollow pipe, a plug ring is fixedly arranged at the bottom of the reading hollow pipe, the bottom of the plug ring is communicated with a top air chamber, a precision detection chamber is arranged inside the lower upper shell, three detection channels are arranged inside the precision detection chamber, the top ends of the three detection channels are communicated with the top air chamber, three expansion chambers respectively communicated with the three detection channels are arranged at the bottom of the precision detection chamber, detection liquid and an expansion assembly are arranged inside each expansion chamber, and the bottom end of the expansion assembly penetrates through the bottom wall of the lower shell and extends to the bottom of the lower shell;
the expansion assembly comprises a metal heat pipe, a sealing hose and an expansion medium, the sealing hose is fixedly arranged at the top of the metal heat pipe, and the expansion medium is arranged in a cavity formed between the metal heat pipe and the sealing hose.
In a preferred embodiment, the upper case is provided in a cylindrical shape, the lower case is provided in a triangular prism shape, and corners are provided in rounded corners.
In a preferred embodiment, a glass transparent window is embedded in the outer wall of the upper shell corresponding to the reading hollow tube, and scale marks are arranged on one side of the glass transparent window.
In a preferred embodiment, activity end cap includes rubber buffer and rubber balloon, the rubber balloon sets up in the rubber buffer bottom and with rubber buffer fixed connection, the rubber buffer outer wall is laminated mutually with the empty intraductal wall of reading, the rubber buffer colour sets up to red.
In a preferred embodiment, three detection channels are arranged in a funnel shape, the top ends of the detection channels are communicated with the top air chamber, the bottom ends of the detection channels are respectively communicated with three expansion chambers, the expansion chambers are arranged in a cylindrical shape, and the three detection channels and the three expansion chambers are uniformly distributed along three corners of the inner cavity of the lower shell.
In a preferred embodiment, the inner wall of the lower shell is provided with a vacuum heat insulation cavity, the vacuum heat insulation cavity wraps the precision detection chamber and the expansion chamber, and the bottom end face of the expansion chamber is attached to the inner wall of the vacuum heat insulation cavity.
In a preferred embodiment, three expansion assemblies respectively penetrate through the vacuum insulation cavity and extend into the three expansion chambers, an insulation sleeve is sleeved outside the expansion assembly positioned in the vacuum insulation cavity, and a plurality of sealing rings are embedded in the inner wall of the insulation sleeve.
In a preferred embodiment, the lower casing corresponding to the outside of the expansion chamber is made of high temperature resistant transparent glass, the outer wall of the lower casing is provided with a horizontal line corresponding to the expansion chamber, and the color of the detection liquid is set to be red.
The invention has the technical effects and advantages that:
1. the three expansion components are used for detecting heat, the three expansion components are heated simultaneously, the heat is led into an expansion medium through the metal heat conduction pipe, the expansion medium is heated and expanded, then the sealing hose is propped up, after the sealing hose is swelled, red detection liquid in the three expansion chambers is jacked up to the three detection channels respectively, the three strands of detection liquid jack up gas in the three detection channels and uniformly enter the gas jacking chamber to jack up the gas in the gas jacking chamber, so that the movable plugs are jacked up and ascend to correspond to the scale lines, and the scales corresponding to the rubber plug are observed through the glass transparent window, so that the temperature reading is realized;
2. the three detection channels can detect whether the expansion precision of the three expansion assemblies is consistent or whether the filling amount of detection liquid is consistent, self-detection can be realized for the measuring instrument, the detection cost is low, and the movable plug is jacked after three jacking airflows are converged, so that the jacking stroke of the movable plug is larger, and therefore when an error is detected, the error is reduced to be lower, and the detection precision is increased;
3. the invention also designs a measuring instrument with a temperature dial plate, which can be used under the condition that the measuring instrument cannot be held by hands for use, the arrangement of a movable plug is omitted, the processing is more convenient, in addition, the detection channel is directly increased into the upper shell, the height of the detection liquid in the detection channel is increased, and thus, the errors among the three strands of detection liquid can be more visually seen.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is an overall sectional view of embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of a horizontal line structure according to embodiment 1 of the present invention.
Fig. 4 is a sectional view of an expansion chamber in example 1 of the present invention.
Fig. 5 is a schematic view of the structure of the lower housing in embodiment 1 of the present invention.
Fig. 6 is a schematic structural view of a movable plug in embodiment 1 of the present invention.
Fig. 7 is a schematic view of the overall structure of embodiment 2 of the present invention.
Fig. 8 is a schematic view of the internal structure of the temperature dial plate in embodiment 2 of the present invention.
The reference signs are: 1 upper shell, 2 lower shell, 3 reading hollow tube, 4 movable plugs, 41 rubber plugs, 42 rubber balloons, 5 top air chambers, 6 precision detection chambers, 7 detection channels, 8 expansion chambers, 9 detection liquid, 10 expansion components, 101 metal heat pipes, 102 sealing hoses, 103 expansion media, 11 plug rings, 12 glass transparent windows, 13 scale marks, 14 vacuum heat insulation cavities, 15 heat insulation sleeves, 16 horizontal lines, 17 temperature dial plates, 18 spring tubes, 19 capillary tubes and 20 transparent observation windows.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a high-precision temperature measuring instrument according to fig. 1-6, comprising an upper case 1 and a lower case 2, the lower shell 2 is fixedly arranged at the bottom of the upper shell 1, a reading hollow tube 3 is arranged inside the upper shell 1, a movable plug 4 is arranged in the reading hollow tube 3, a plug ring 11 is fixedly arranged at the bottom of the reading hollow tube 3, the bottom of the plugging ring 11 is communicated with a top air chamber 5, the lower upper shell 1 is internally provided with a precision detection chamber 6, three detection channels 7 are arranged in the precision detection chamber 6, the top ends of the three detection channels 7 are communicated with the top air chamber 5, the bottom of the precision detection chamber 6 is provided with three expansion chambers 8 respectively communicated with the three detection channels 7, detection liquid 9 and an expansion assembly 10 are arranged in each expansion chamber 8, and the bottom end of each expansion assembly 10 penetrates through the bottom wall of the lower shell 2 and extends to the bottom of the lower shell 2;
a glass transparent window 12 is embedded in the outer wall of the upper shell 1 corresponding to the reading hollow tube 3, and scale marks 13 are arranged on one side of the glass transparent window 12;
the movable plug 4 comprises a rubber plug 41 and a rubber balloon 42, the rubber balloon 42 is arranged at the bottom of the rubber plug 41 and is fixedly connected with the rubber plug 41, the outer wall of the rubber plug 41 is attached to the inner wall of the reading hollow tube 3, and the color of the rubber plug 41 is red;
the three detection channels 7 are arranged in a funnel shape, the top ends of the detection channels are communicated with the top air chamber 5, and the bottom ends of the detection channels are respectively communicated with the three expansion chambers 8;
the color of the detection liquid 9 is set to be red, the expansion assembly 10 includes a metal heat pipe 101, a sealing hose 102 and an expansion medium 103, the sealing hose 102 is fixedly disposed on the top of the metal heat pipe 101, and the expansion medium 103 is disposed in a cavity formed between the metal heat pipe 101 and the sealing hose 102.
The implementation mode is specifically as follows: when the temperature measuring instrument is used, the temperature measuring instrument can be held by hand and placed on a measuring object, the three expansion assemblies 10 are heated at the same time, heat is conducted into the expansion medium 103 through the metal heat conduction pipe 101, the expansion medium 103 is heated and expanded, then the sealing hose 102 is supported, after the sealing hose 102 is expanded, the red detection liquid 9 in the three expansion chambers 8 is jacked up into the three detection channels 7 respectively, the three detection liquids 9 jack up the gas in the three detection channels 7 and uniformly enter the gas jacking chamber 5 to jack up the gas in the gas jacking chamber 5, so that the movable plugs 4 are jacked up, the movable plugs 4 are lifted up and can correspond to the scale marks 13, the scales corresponding to the transparent windows 41 are observed through the glass 12, temperature reading is realized, and the scale marks 13 are set according to the expansion coefficient of the expansion medium 103.
According to a high-precision temperature measuring instrument shown in fig. 4, the upper case 1 is provided in a cylindrical shape, the lower case 2 is provided in a triangular prism shape, and corners are provided in rounded corners;
the expansion chamber 8 is cylindrical, and the three detection channels 7 and the three expansion chambers 8 are uniformly distributed along three angles of the inner cavity of the lower shell 2.
The implementation mode is specifically as follows: when the temperature measuring instrument is used, the lower shell 2 is arranged to be triangular prism-shaped, the expansion chambers 8 are arranged to be cylindrical, the three expansion chambers 8 and the three expansion assemblies 10 are guaranteed to be heated consistently, and no error is generated.
According to the high-precision temperature measuring instrument shown in fig. 2, the inner wall of the lower shell 2 is provided with a vacuum heat insulation cavity 14, the vacuum heat insulation cavity 14 covers the precision detection chamber 6 and the expansion chamber 8, and the bottom end surface of the expansion chamber 8 is attached to the inner wall of the vacuum heat insulation cavity 14;
three expansion assembly 10 runs through vacuum heat insulation chamber 14 respectively and extends to inside three expansion chamber 8, and the outside cover of expansion assembly 10 that is located vacuum heat insulation chamber 14 inside is equipped with heat insulating sleeve 15, and heat insulating sleeve 15 inner wall inlays and is equipped with a plurality of sealing washers.
The implementation mode is specifically as follows: the setting of vacuum heat insulation chamber 14 guarantees that only three expansion assembly 10 is heated, detects the precision height, and after three expansion assembly 10 installation, can avoid external material to get into expansion chamber 8 in, leads to detecting liquid 9 capacity error, influences and detects the precision.
According to the high-precision temperature measuring instrument shown in fig. 3, the lower shell 2 corresponding to the outside of the expansion chamber 8 is made of high-temperature-resistant transparent glass, and the outer wall of the lower shell 2 is provided with a horizontal line 16 corresponding to the expansion chamber 8;
the implementation mode is specifically as follows: after temperature measuring apparatu used a period, make it insert the hot-water glass in, can detect the height of liquid 9 in the three detection passageway 7 of direct observation, level line 16 can assist the three height whether unanimous that detects liquid 9 of inspection to whether the inspection detects liquid 9 thermal expansion and takes place the error, or whether detect the detection liquid 9 capacity change in the three expansion chamber 8, be convenient for in time inspect the trouble, avoid the temperature to detect inaccurate.
Example 2:
according to a high-precision temperature measuring instrument shown in fig. 7-8, the top end of the upper shell 1 is connected with a temperature dial 17 through a capillary tube 19, a spring tube 18 is arranged in the temperature dial 17, one end of the spring tube 18 is connected with a capillary tube 19, the other end of the spring tube 18 is sealed to be a free end, when the temperature changes, the pressure in the spring tube 18 changes to drive the free end to change, the free end is connected with the pointer through the pull rod and the gear transmission mechanism, the rotation angle of the pointer indicates the measured temperature on the temperature dial 17, the principle of the whole temperature dial 17 is the same as that of the pressure thermometer, the top air chamber 5 and the three detection channels 7 are arranged in the upper shell 1, the top end of the top air chamber 5 is connected with the capillary tube 19, the bottom ends of the three detection channels 7 are connected with the expansion chamber 8, and transparent observation windows 20 are arranged on the outer walls of the upper shell 1 corresponding to the three detection channels 7;
the implementation mode is specifically as follows: when the temperature measuring instrument inserts for example when jar internal use, can put into whole measuring instrument, the external portion of jar is arranged in to temperature dial plate 17, the safe handling of being convenient for, and expansion assembly 10 is bloated in the expansion chamber 8 will detect liquid 9 ejecting to three detecting channel 7 in, gas in the three detecting channel 7 receives the extrusion, directly produce pressure drive temperature dial plate 17 through capillary 19, show the temperature value through the pointer, three detecting channel 7 still can detect the height of heat detection precision, and directly increase detecting channel 7 to the casing 1 in, the height of detecting liquid 9 in detecting channel 7 has been lengthened, thereby can more audio-visual see the error between the three strands of detecting liquid 9, and whole device does not set up movable end cap 4, it is more convenient to process.
The working principle of the invention is as follows:
referring to the attached drawings 1-6 of the specification, when the temperature measuring instrument is used, the temperature measuring instrument is held by hand and placed on a measuring object, the three expansion assemblies 10 are heated simultaneously, the red detection liquid 9 in the three expansion chambers 8 is jacked up to the three detection channels 7 respectively, the gas in the gas jacking chamber 5 is jacked up, so that the movable plug 4 is jacked up, the movable plug 4 rises, and the scale corresponding to the rubber plug 41 can be observed through the transparent glass window 12, so that the temperature reading is realized;
referring to the attached figures 7-8 of the specification, the whole device can be used without holding by hand, the temperature data can be displayed through the thermometer panel 17 when the device is placed in a detection object, the three detection channels 7 can still detect the height of the heat detection precision, and the whole device is not provided with the movable plug 4, so that the device is more convenient to process.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. The utility model provides a high accuracy temperature measuring instrument, includes casing (1) and casing (2) down, casing (2) are fixed to be set up in last casing (1) bottom down, its characterized in that: a reading hollow tube (3) is arranged in the upper shell (1), a movable plug (4) is arranged in the reading hollow tube (3), a plug ring (11) is fixedly arranged at the bottom of the reading hollow pipe (3), the bottom of the plug ring (11) is communicated with a top air chamber (5), an accuracy detection chamber (6) is arranged in the upper shell (1), three detection channels (7) are arranged in the accuracy detection chamber (6), the top ends of the three detection channels (7) are communicated with the top air chamber (5), the bottom of the precision detection chamber (6) is provided with three expansion chambers (8) which are respectively communicated with the three detection channels (7), each expansion chamber (8) is internally provided with detection liquid (9) and an expansion component (10), the bottom end of the expansion component (10) penetrates through the bottom wall of the lower shell (2) and extends to the bottom of the lower shell (2); the expansion assembly (10) comprises a metal heat-conducting pipe (101), a sealing hose (102) and an expansion medium (103), wherein the sealing hose (102) is fixedly arranged at the top of the metal heat-conducting pipe (101), and the expansion medium (103) is arranged in a cavity formed between the metal heat-conducting pipe (101) and the sealing hose (102).
2. A high accuracy temperature measuring instrument according to claim 1, wherein: the upper shell (1) is set to be cylindrical, the lower shell (2) is set to be triangular prism-shaped, and corners are set to be round corners.
3. A high accuracy temperature measuring instrument according to claim 1, wherein: the outer wall of the upper shell (1) corresponding to the reading hollow tube (3) is embedded with a glass transparent window (12), and one side of the glass transparent window (12) is provided with scale marks (13).
4. A high accuracy temperature measuring instrument according to claim 1, wherein: activity end cap (4) include rubber buffer (41) and rubber balloon (42), rubber balloon (42) set up in rubber buffer (41) bottom and with rubber buffer (41) fixed connection, rubber buffer (41) outer wall laminates mutually with reading hollow tube (3) inner wall, rubber buffer (41) colour sets up to red.
5. A high accuracy temperature measuring instrument according to claim 2, wherein: it is three detect passageway (7) set up to leaking hopper-shaped, and the top is linked together with top air chamber (5), and the bottom is linked together with three expansion chamber (8) respectively, expansion chamber (8) set up to cylindric, three detect passageway (7) and three expansion chamber (8) are all along the three angle evenly distributed of casing (2) inner chamber down.
6. A high accuracy temperature measuring instrument according to claim 1, wherein: the inner wall of the lower shell (2) is provided with a vacuum heat insulation cavity (14), the vacuum heat insulation cavity (14) wraps the precision detection chamber (6) and the expansion chamber (8), and the bottom end face of the expansion chamber (8) is attached to the inner wall of the vacuum heat insulation cavity (14).
7. A high accuracy temperature measuring instrument according to claim 1, wherein: three inside expansion assembly (10) run through vacuum heat insulation chamber (14) respectively and extend to three expansion chamber (8), the outside cover of expansion assembly (10) that is located vacuum heat insulation chamber (14) inside is equipped with heat insulating sleeve (15), and heat insulating sleeve (15) inner wall inlays and is equipped with a plurality of sealing washers.
8. A high accuracy temperature measuring instrument according to claim 1, wherein: the lower shell (2) corresponding to the outside of the expansion chamber (8) is made of high-temperature-resistant transparent glass, a horizontal line (16) corresponding to the expansion chamber (8) is arranged on the outer wall of the lower shell (2), and the color of the detection liquid (9) is set to be red.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220947.6A CN109827668B (en) | 2019-03-22 | 2019-03-22 | High-precision temperature measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220947.6A CN109827668B (en) | 2019-03-22 | 2019-03-22 | High-precision temperature measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109827668A CN109827668A (en) | 2019-05-31 |
| CN109827668B true CN109827668B (en) | 2020-09-15 |
Family
ID=66871142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910220947.6A Active CN109827668B (en) | 2019-03-22 | 2019-03-22 | High-precision temperature measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109827668B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739529B (en) * | 2022-05-11 | 2022-11-25 | 山东信隆机电有限公司 | Mechanical high-low voltage motor temperature measuring device capable of reflecting temperature through resistor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208282465U (en) * | 2018-04-27 | 2018-12-25 | 青岛欧利柯商用冷链有限公司 | A kind of temperature control device and system of refrigerator |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US406139A (en) * | 1889-07-02 | Thermometer | ||
| US1901431A (en) * | 1933-03-14 | hethod op and apparatus for determining true | ||
| US1632152A (en) * | 1926-07-12 | 1927-06-14 | Taylor Instrument Co | High-temperature vapor-pressure recorder and regulator |
| SU1363940A1 (en) * | 1984-11-20 | 1996-04-20 | Б.И. Галченко | Temperature sensor |
| CN87213747U (en) * | 1987-09-24 | 1988-06-15 | 富阳仪表厂 | Flat spring tube pressure type thermometer |
| JP2946718B2 (en) * | 1990-10-09 | 1999-09-06 | 日本電気株式会社 | Thermal switch for satellite |
| CN2115530U (en) * | 1991-12-24 | 1992-09-09 | 王东来 | Pressure thermometer |
| DE19535233C2 (en) * | 1995-09-22 | 1999-07-29 | Geesthacht Gkss Forschung | Method and device for the dilatometric recording of a turnover-time profile of chemical reaction mixtures |
| JP4447724B2 (en) * | 2000-02-29 | 2010-04-07 | ホーチキ株式会社 | Thermal sensing unit and fire alarm system |
| KR200305030Y1 (en) * | 2002-11-25 | 2003-02-19 | 권영빈 | Thermometer and pressure gauge |
| DE10313986B4 (en) * | 2003-03-27 | 2005-02-10 | Armaturenbau Gmbh | Spring-elastic measuring element |
| CN2773647Y (en) * | 2005-03-07 | 2006-04-19 | 吴奕军 | Composite sensing steam pressure thermometer |
| CN101349595A (en) * | 2007-07-19 | 2009-01-21 | 白友新 | Large-scale hydraulic type public temperature gauge |
| JP5455178B2 (en) * | 2008-03-28 | 2014-03-26 | 株式会社不二工機 | Temperature sensing cylinder for expansion valve |
| US9080897B2 (en) * | 2013-02-22 | 2015-07-14 | Rosemount Inc. | Self-powered optical detector for mechanical gauge instruments |
| US9797237B2 (en) * | 2014-11-17 | 2017-10-24 | General Electric Company | Constant volume temperature to pressure transducer for use with retrievable pressure sensor assemblies |
-
2019
- 2019-03-22 CN CN201910220947.6A patent/CN109827668B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208282465U (en) * | 2018-04-27 | 2018-12-25 | 青岛欧利柯商用冷链有限公司 | A kind of temperature control device and system of refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109827668A (en) | 2019-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109827668B (en) | High-precision temperature measuring instrument | |
| CN109990906B (en) | High-temperature high-pressure closed cavity infrared temperature measurement system and method | |
| CN106525327A (en) | Demisting and antifreezing pressure gauge | |
| KR20080083738A (en) | A thermometer for both machine type and electron type | |
| CN212931553U (en) | Vacuum tube type temp. difference liquid level meter | |
| CN215910048U (en) | Testing device of optical fiber F-P type high-temperature pressure sensor | |
| CN211825802U (en) | Water activity detection device and water activity detection tank | |
| CN204422134U (en) | A kind of device measuring TFT liquid-crystalline glasses kiln furnace pressure | |
| CN111551232A (en) | Vacuum tube type temp. difference liquid level meter | |
| CN208476437U (en) | A kind of temperature standard device of smokeless environment-friendly | |
| CN109297648B (en) | Engine production detects and uses gas tightness measuring instrument convenient to observe | |
| CN102279057A (en) | Pressure type fluid temperature sensor | |
| CN107192489B (en) | It is a kind of based on the swelling stress test device strained entirely and method | |
| CN211234755U (en) | Glass liquid thermometer with water quality detection function | |
| CN111175346A (en) | Water activity detection device, water activity detection tank and detection method thereof | |
| CN208780354U (en) | A kind of atmospheric detection high temperature thermometer of shatter-resistant | |
| US1361142A (en) | Draft-gage | |
| CN112304473A (en) | Soaking component, temperature calibrator and temperature calibration method | |
| CN216770886U (en) | Pressing device for calibrating miniature optical fiber F-P cavity pressure sensor | |
| CN214583728U (en) | Indoor miniature wireless temperature measurement sensor | |
| CN214951936U (en) | Differential pressure transmitter with temperature compensation device | |
| SU54353A1 (en) | Manometer | |
| CN211373914U (en) | Instrument manufacturing pressure detection device | |
| CN211504516U (en) | Pressure gauge | |
| CN218994546U (en) | Temperature measuring device for oil tank liquid level gauge |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |