CN114088166B - Oil level alarm switch - Google Patents
Oil level alarm switch Download PDFInfo
- Publication number
- CN114088166B CN114088166B CN202111370988.7A CN202111370988A CN114088166B CN 114088166 B CN114088166 B CN 114088166B CN 202111370988 A CN202111370988 A CN 202111370988A CN 114088166 B CN114088166 B CN 114088166B
- Authority
- CN
- China
- Prior art keywords
- fixing piece
- ball rod
- ball
- upper fixing
- lower fixing
- 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
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
- G01F23/68—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using electrically actuated indicating means
- G01F23/70—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using electrically actuated indicating means for sensing changes in level only at discrete points
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention relates to the technical field of oil level detection, in particular to an oil level alarm switch; the invention comprises a flange, wherein a first ball float and a second ball float are penetrated on the surface of the flange, a first upper fixing piece and a first lower fixing piece are arranged on the first ball float, and a first floating ball is arranged between the first upper fixing piece and the first lower fixing piece; the second floating ball rod is provided with a second upper fixing piece and a second lower fixing piece, a second floating ball is arranged between the second upper fixing piece and the second lower fixing piece, a voltage sensor circuit board is inserted in the second floating ball rod, and the voltage sensor circuit board is externally connected with a voltage conversion box; through setting up first cue, first floater, second cue, second floater, can realize low level warning, simultaneously, can also realize continuous low level warning liquid level measurement, analog quantity 0-5V signal output, the precision can reach 7.5mm, can bear 8 kilograms of pressure under water, realizes high accuracy response, has advantages such as signal stability, temperature resistance are good, withstand voltage is good moreover.
Description
Technical Field
The invention relates to the technical field of oil level detection, in particular to an oil level alarm switch.
Background
The existing diesel oil level detection device generally adopts a reed pipe type structure, has limited sensing range and low precision, can generate larger error under low-temperature or high-temperature environment, and has certain requirement on pressure-bearing capacity because an oil level alarm switch is placed in an oil tank for a long time.
Accordingly, based on the above-described drawbacks of the existing oil level detection device, improvements are required to be made to the existing oil level detection device.
Disclosure of Invention
The invention aims to provide an oil level alarm switch which solves the problems of the prior oil level detection device, aiming at overcoming the defects of the prior art: and the accuracy is not high.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the oil level alarm switch comprises a flange, a first ball rod and a second ball rod are arranged on the surface of the flange in a penetrating manner, a first upper fixing piece and a first lower fixing piece are arranged on the first ball rod, and a first floating ball is arranged between the first upper fixing piece and the first lower fixing piece; the second ball rod is provided with a second upper fixing piece and a second lower fixing piece, a second floating ball is arranged between the second upper fixing piece and the second lower fixing piece, a voltage sensor circuit board is inserted in the second ball rod, and the voltage sensor circuit board is externally connected with a voltage conversion box.
Further, the second cue is longer than the first cue, the second lower fixing piece is lower than the first lower fixing piece, and the second upper fixing piece is higher than the first upper fixing piece.
Further, the upper end of the first ball rod passes through the flange and is fixedly connected with the first corner seat, the side surface of the first corner seat extends out of the first lead, and the first lead and the first ball rod are arranged at 90 degrees.
Further, the upper end of the second ball rod passes through the flange and is fixedly connected with the second corner seat, the side surface of the second corner seat extends out of the second lead, and the second lead is arranged at 90 degrees with the first ball rod.
Further, two annular grooves are formed in the first ball rod, a first upper fixing piece is arranged on the annular groove in a clamped mode, a first lower fixing piece is arranged on the annular groove in a clamped mode, and the first floating ball is sleeved on the first ball rod.
Further, two annular grooves are formed in the second ball rod, a second upper fixing piece is arranged on the annular groove in a clamped mode, a second lower fixing piece is arranged on the annular groove in a clamped mode, and the second floating ball is sleeved on the second ball rod.
Further, the outside of first corner seat be fixed with fixed bordure, the top bending extension of fixed bordure has the withhold portion, withhold portion and push down the top surface of first corner seat.
Further, the outside of second corner seat be fixed with fixed bordure, the top bending extension of fixed bordure has the withhold portion, withhold portion and push down the top surface of second corner seat.
The invention has the beneficial effects that: through setting up first cue, first floater, second cue, second floater, can realize low level warning, simultaneously, can also realize continuous low level warning liquid level measurement, analog quantity 0-5V signal output, the precision can reach 7.5mm, can bear 8 kilograms of pressure under water, realizes high accuracy response, has advantages such as signal stability, temperature resistance are good, withstand voltage is good moreover.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a partially enlarged schematic construction of the present invention.
Fig. 5 is a schematic circuit diagram of a voltage sensor circuit board according to the present invention.
Reference numerals and description:
Flange 1, first kickball 2, first floater 3, first upper stator 4, first lower stator 5, second kickball 6, second upper stator 7, second lower stator 8, second floater 9, first wire 10, first corner seat 11, fixed bordure 12, withhold portion 13, second corner seat 14, second wire 15, voltage conversion box 16, ring channel 17.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 5, the oil level alarm switch of the present invention includes: the flange 1, flange 1 have 6 mounting holes, and flange 1 surface wears to be equipped with first kicking bar 2, has first upper stator 4, first stationary blade 5 down on the first kicking bar 2, is provided with first floater 3 between the first upper stator 4, the first stationary blade 5 down.
The surface of the flange 1 is provided with a second ball float 6 in a penetrating way, the second ball float 6 is provided with a second upper fixing piece 7 and a second lower fixing piece 8, and a second floating ball 9 is arranged between the second upper fixing piece 7 and the second lower fixing piece 8.
The second floating club 6 is longer than the first floating club 2, the height of the second lower fixing piece 8 is lower than that of the first lower fixing piece 5, the height of the second upper fixing piece 7 is higher than that of the first upper fixing piece 4, and the second upper fixing piece 7 is close to the bottom surface of the flange 1.
The upper end of the first ball rod 2 passes through the flange 1 and is fixedly connected with the first corner seat 11, the side surface of the first corner seat 11 extends out of the first lead 10, and the first lead 10 and the first ball rod 2 are arranged at 90 degrees. The outside of first corner seat 11 is fixed with fixed bordure 12, and the top of fixed bordure 12 is buckled and is extended and has withhold portion 13, withhold portion 13 push down the top surface of first corner seat 11.
The upper end of the second ball rod 6 passes through the flange 1 and is fixedly connected with the second corner seat 14, the side surface of the second corner seat 14 extends out of the second lead 15, and the second lead 15 is arranged at 90 degrees with the first ball rod 2. The outside of the second corner seat 14 is fixed with a fixed binding 12, the top of the fixed binding 12 is bent and extended with a buckling part 13, and the buckling part 13 presses the top surface of the second corner seat 14.
The second wire 15 of the present invention is also connected to a voltage conversion box 16.
The second cue 6 of the present invention is internally provided with a voltage sensor circuit board, and the circuit of the voltage sensor circuit board is shown in fig. 5.
The first lead 10 of the invention adopts a high-temperature silica gel double-core wire; the second wire 15 employs a high temperature silicone three-wire, wherein a red wire is used for the 24-32V input of the power source, a blue wire is used for the 0-5V output of the voltage signal, and a black wire is a common wire.
The first ball float 2 is provided with two annular grooves 17, the annular groove 17 positioned above is clamped with a first upper fixing piece 4, the annular groove 17 positioned below is clamped with a first lower fixing piece 5, and the first floating ball 3 is sleeved on the first ball float 2 and positioned between the first upper fixing piece 4 and the first lower fixing piece 5.
The second ball float 6 is provided with two annular grooves 17, the upper annular groove 17 is clamped with a second upper fixing piece 7, the lower annular groove 17 is clamped with a second lower fixing piece 8, and the second floating ball 9 is sleeved on the second ball float 6 and is positioned between the second upper fixing piece 7 and the second lower fixing piece 8.
The on water level of the first float 3 of the present invention is 210mm. The second floating ball 9 is a sensor floating ball and adopts a ferromagnetic floating ball. The first corner seat 11 and the second corner seat 14 are filled with high-temperature glue.
The electrical characteristics of the invention: rated power 125mW, maximum working current 300mA. Operating temperature: -40-100 degrees.
The liquid level data and the output signals of the invention correspond to the following table:
According to the invention, the first ball float 2 and the first ball float 3 realize low-level alarm signal output, the second ball float 6 and the second ball float 9 realize continuous low-level alarm liquid level measurement, the analog quantity is 0-5V, the signal output precision can reach 7.5mm, and the underwater pressure of 8 kg can be borne.
The invention can realize high-precision induction and has the advantages of stable signal, good temperature resistance, good pressure resistance and the like.
It is understood that the above-described embodiments are merely preferred examples of the present invention and are not intended to limit the scope of the present invention, so that all equivalent changes or modifications of the structure, features and principles described in the claims are intended to be included in the scope of the present invention.
Claims (7)
1. Oil level alarm switch, its characterized in that: the ball joint comprises a flange, wherein a first ball rod and a second ball rod are arranged on the surface of the flange in a penetrating way, a first upper fixing piece and a first lower fixing piece are arranged on the first ball rod, and a first floating ball is arranged between the first upper fixing piece and the first lower fixing piece; the second floating ball rod is provided with a second upper fixing piece and a second lower fixing piece, a second floating ball is arranged between the second upper fixing piece and the second lower fixing piece, a voltage sensor circuit board is inserted in the second floating ball rod, and the voltage sensor circuit board is externally connected with a voltage conversion box;
The second floating club is longer than the first floating club, the height position of the second lower fixing piece is lower than that of the first lower fixing piece, and the height position of the second upper fixing piece is higher than that of the first upper fixing piece;
The upper end of the first ball rod passes through the flange and is fixedly connected with the first corner seat;
The upper end of the second ball rod passes through the flange and is fixedly connected with the second corner seat;
the first floating ball is sleeved on the first ball rod;
the second floating ball is sleeved on the second ball rod;
the first upper fixing piece and the first lower fixing piece are positioned at the lower end of the first floating club;
The second upper fixing piece is positioned at the upper end of the second ball rod and positioned at the lower side of the flange;
the second lower fixing piece is positioned at the lower end of the second floating ball rod;
The first ball rod and the first floating ball are used for realizing low-level alarm signal output, and the second ball rod and the second floating ball are used for realizing continuous low-level alarm liquid level measurement.
2. The oil level alarm switch according to claim 1, characterized in that: the side of the first corner seat extends out of the first lead, and the first lead and the first ball rod are arranged at 90 degrees.
3. The oil level alarm switch according to claim 1, characterized in that: the side of the second corner seat extends out of the second lead, and the second lead and the first ball rod are arranged at 90 degrees.
4. The oil level alarm switch according to claim 1, characterized in that: the first ball rod is provided with two annular grooves, a first upper fixing piece is clamped in the annular groove positioned above the first ball rod, and a first lower fixing piece is clamped in the annular groove positioned below the first ball rod.
5. The oil level alarm switch according to claim 1, characterized in that: the second ball rod is provided with two annular grooves, the annular groove at the upper part is clamped with a second upper fixing piece, and the annular groove at the lower part is clamped with a second lower fixing piece.
6. The oil level alarm switch according to claim 2, characterized in that: the outer side of the first corner seat is fixedly provided with a fixed binding edge, the top of the fixed binding edge is bent and extended to form a buckling part, and the buckling part presses the top surface of the first corner seat.
7. The oil level warning switch according to claim 3, characterized in that: the outer side of the second corner seat is fixedly provided with a fixed binding, the top of the fixed binding is bent and extended to form a buckling part, and the buckling part presses the top surface of the second corner seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111370988.7A CN114088166B (en) | 2021-11-18 | 2021-11-18 | Oil level alarm switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111370988.7A CN114088166B (en) | 2021-11-18 | 2021-11-18 | Oil level alarm switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114088166A CN114088166A (en) | 2022-02-25 |
| CN114088166B true CN114088166B (en) | 2024-04-30 |
Family
ID=80301912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111370988.7A Active CN114088166B (en) | 2021-11-18 | 2021-11-18 | Oil level alarm switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114088166B (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191354Y (en) * | 1994-03-08 | 1995-03-08 | 天津市调节器电磁阀厂 | Level ball controller with low-level sustained alarm function |
| CN2624184Y (en) * | 2003-06-10 | 2004-07-07 | 潍坊众谊汽车配件有限公司 | Fuel low oil sensing alarm |
| CN203038124U (en) * | 2013-01-14 | 2013-07-03 | 高桥金属制品（苏州）有限公司 | Liquid level controller |
| CN203837778U (en) * | 2014-02-21 | 2014-09-17 | 中国人民解放军总后勤部油料研究所 | Vehicle-mounted oil tank and liquid level measurement device thereof |
| CN204464172U (en) * | 2014-12-23 | 2015-07-08 | 江苏远望仪器有限公司 | Roof-mounted order self-inspection liquid-level switch |
| CN204594543U (en) * | 2015-02-26 | 2015-08-26 | 戴格 | A kind of sectional type warning device for measuring water level |
| CN204705390U (en) * | 2015-04-01 | 2015-10-14 | 珠海光宇电池有限公司 | Liquid level alarm device |
| CN205679300U (en) * | 2016-06-20 | 2016-11-09 | 苏州宝馨科技实业股份有限公司 | A kind of liquid level detecting device |
| TWM533248U (en) * | 2016-05-12 | 2016-12-01 | Yi Jiue Co Ltd | Floating ball type liquid level sensor structure |
| CN206248172U (en) * | 2016-12-07 | 2017-06-13 | 中山市变革软件科技有限公司 | A kind of float-ball type multiresolution liquid level sensor |
| CN206656775U (en) * | 2017-03-31 | 2017-11-21 | 长安大学 | A kind of level monitoring signal supervisory instrument |
| CN109425413A (en) * | 2017-09-05 | 2019-03-05 | 上海融德机电工程设备有限公司 | The adjustable type liquid level warning sensor peculiar to vessel of double knock point |
| CN208704848U (en) * | 2018-10-23 | 2019-04-05 | 潍坊通达仪表有限公司 | Bivariate measurement sensor and its system |
| CN208937147U (en) * | 2018-12-18 | 2019-06-04 | 浙江海洋大学 | A kind of ship bend navigation warning device |
| CN209117137U (en) * | 2018-09-07 | 2019-07-16 | 无锡拓蓝自动化科技有限公司 | A kind of double floating-ball fluid level transmitters |
| CN209216885U (en) * | 2018-11-21 | 2019-08-06 | 沈阳明远电气科技有限公司 | Tongue tube liquid level relay |
| CN111477497A (en) * | 2020-03-18 | 2020-07-31 | 山东电力设备有限公司 | Intelligent double-floating-ball gas relay and monitoring system |
| CN211527556U (en) * | 2019-10-09 | 2020-09-18 | 西安泓为自控信息科技有限公司 | Liquid level alarm |
| TW202044298A (en) * | 2019-05-15 | 2020-12-01 | 逢達科技有限公司 | Float level switch device |
| FR3101152A1 (en) * | 2019-09-24 | 2021-03-26 | Etat Français Représenté Par Le Délégué Général De L'armement | LIQUID PRESENCE DETECTION DEVICE, RETAINING BOWL FOR HAZARDOUS LIQUID TANK INCLUDING IT, AND LIQUID PRESENCE DETECTION SYSTEM |
| CN213876435U (en) * | 2020-12-25 | 2021-08-03 | 南京维塔文化遗产保护技术有限公司 | Constant humidity machine moisturizing device with two liquid level monitoring |
| CN216084714U (en) * | 2021-11-18 | 2022-03-18 | 东莞市西弗莱电子有限公司 | Oil level alarm switch |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9587973B2 (en) * | 2013-04-29 | 2017-03-07 | Reliable Pump Stop, Inc. | Fluid reservoir level detection system |
| WO2016130119A1 (en) * | 2015-02-11 | 2016-08-18 | Lone Star Leak Detection, Llc | Liquid level monitoring for reservoirs |
-
2021
- 2021-11-18 CN CN202111370988.7A patent/CN114088166B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191354Y (en) * | 1994-03-08 | 1995-03-08 | 天津市调节器电磁阀厂 | Level ball controller with low-level sustained alarm function |
| CN2624184Y (en) * | 2003-06-10 | 2004-07-07 | 潍坊众谊汽车配件有限公司 | Fuel low oil sensing alarm |
| CN203038124U (en) * | 2013-01-14 | 2013-07-03 | 高桥金属制品（苏州）有限公司 | Liquid level controller |
| CN203837778U (en) * | 2014-02-21 | 2014-09-17 | 中国人民解放军总后勤部油料研究所 | Vehicle-mounted oil tank and liquid level measurement device thereof |
| CN204464172U (en) * | 2014-12-23 | 2015-07-08 | 江苏远望仪器有限公司 | Roof-mounted order self-inspection liquid-level switch |
| CN204594543U (en) * | 2015-02-26 | 2015-08-26 | 戴格 | A kind of sectional type warning device for measuring water level |
| CN204705390U (en) * | 2015-04-01 | 2015-10-14 | 珠海光宇电池有限公司 | Liquid level alarm device |
| TWM533248U (en) * | 2016-05-12 | 2016-12-01 | Yi Jiue Co Ltd | Floating ball type liquid level sensor structure |
| CN205679300U (en) * | 2016-06-20 | 2016-11-09 | 苏州宝馨科技实业股份有限公司 | A kind of liquid level detecting device |
| CN206248172U (en) * | 2016-12-07 | 2017-06-13 | 中山市变革软件科技有限公司 | A kind of float-ball type multiresolution liquid level sensor |
| CN206656775U (en) * | 2017-03-31 | 2017-11-21 | 长安大学 | A kind of level monitoring signal supervisory instrument |
| CN109425413A (en) * | 2017-09-05 | 2019-03-05 | 上海融德机电工程设备有限公司 | The adjustable type liquid level warning sensor peculiar to vessel of double knock point |
| CN209117137U (en) * | 2018-09-07 | 2019-07-16 | 无锡拓蓝自动化科技有限公司 | A kind of double floating-ball fluid level transmitters |
| CN208704848U (en) * | 2018-10-23 | 2019-04-05 | 潍坊通达仪表有限公司 | Bivariate measurement sensor and its system |
| CN209216885U (en) * | 2018-11-21 | 2019-08-06 | 沈阳明远电气科技有限公司 | Tongue tube liquid level relay |
| CN208937147U (en) * | 2018-12-18 | 2019-06-04 | 浙江海洋大学 | A kind of ship bend navigation warning device |
| TW202044298A (en) * | 2019-05-15 | 2020-12-01 | 逢達科技有限公司 | Float level switch device |
| FR3101152A1 (en) * | 2019-09-24 | 2021-03-26 | Etat Français Représenté Par Le Délégué Général De L'armement | LIQUID PRESENCE DETECTION DEVICE, RETAINING BOWL FOR HAZARDOUS LIQUID TANK INCLUDING IT, AND LIQUID PRESENCE DETECTION SYSTEM |
| CN211527556U (en) * | 2019-10-09 | 2020-09-18 | 西安泓为自控信息科技有限公司 | Liquid level alarm |
| CN111477497A (en) * | 2020-03-18 | 2020-07-31 | 山东电力设备有限公司 | Intelligent double-floating-ball gas relay and monitoring system |
| CN213876435U (en) * | 2020-12-25 | 2021-08-03 | 南京维塔文化遗产保护技术有限公司 | Constant humidity machine moisturizing device with two liquid level monitoring |
| CN216084714U (en) * | 2021-11-18 | 2022-03-18 | 东莞市西弗莱电子有限公司 | Oil level alarm switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114088166A (en) | 2022-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216084714U (en) | Oil level alarm switch | |
| CN114088166B (en) | Oil level alarm switch | |
| CN202814504U (en) | Oil level sensor based on magnetoresistive effect | |
| CN101776334A (en) | Water-level and water-temperature sensor for solar water heater | |
| CN201555640U (en) | Methanol fuel liquid level sensor | |
| CN204718729U (en) | A kind of sewage pressure transmitter | |
| CN2149610Y (en) | Float type liquid level sensing device | |
| CN202748187U (en) | Capacitive pressure transducer | |
| CN205483378U (en) | Ultra -low power consumption digit pressure transmitter | |
| CN2449208Y (en) | Pressure-resistance type liquid level transmitters | |
| CN2333001Y (en) | Built-in magnetic buoyanc level meter | |
| CN201333927Y (en) | Pressure oil-quantity induction-type automobile oil tank | |
| CN201289245Y (en) | External self control liquid level and liquid temperature sensor | |
| CN209485490U (en) | Liquid level detection device | |
| CN211178667U (en) | Water conservancy reservoir monitoring devices | |
| CN2502247Y (en) | Resistance-type water gage | |
| CN109253778B (en) | Floating ball liquid level meter | |
| CN104215294A (en) | Integrated type liquid-level transmitter | |
| CN216770734U (en) | Liquid level sensor of silica gel shell | |
| CN202869592U (en) | Dynamic pressure type compound sensor | |
| CN2194505Y (en) | Liquid container automatic digital diplayer | |
| CN216925732U (en) | Magnetostrictive liquid level instrument for synchronously detecting pressure | |
| CN2540623Y (en) | Probe of electronic water gage | |
| CN216348947U (en) | Flexible liquid level sensor | |
| CN201218719Y (en) | Anti-impact displacement transducer |
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 |