CN108709696B - Calibrating device for building exterior door and window testing machine - Google Patents
Calibrating device for building exterior door and window testing machine Download PDFInfo
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- CN108709696B CN108709696B CN201810633580.6A CN201810633580A CN108709696B CN 108709696 B CN108709696 B CN 108709696B CN 201810633580 A CN201810633580 A CN 201810633580A CN 108709696 B CN108709696 B CN 108709696B
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- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 238000012795 verification Methods 0.000 claims abstract description 79
- 238000004088 simulation Methods 0.000 claims abstract description 28
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229930091051 Arenine Natural products 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
- G01L27/005—Apparatus for calibrating pressure sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/007—Leak detector calibration, standard leaks
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a calibrating device for an external door and window testing machine of a building, which comprises a simulation window, wherein a pressure value channel and a flow value channel are arranged on the simulation window, a gas flowmeter calibrating unit for calibrating a gas flowmeter of the building testing machine and a pressure sensor calibrating unit for calibrating a pressure sensor of the building testing machine are connected to the simulation window, the gas flowmeter calibrating unit comprises a flow calibrating gas channel connected with the flow value channel, at least two standard flowmeters capable of respectively and independently working are connected to the flow calibrating gas channel, the pressure sensor calibrating unit comprises a pressure calibrating gas channel connected with the pressure value channel, and the pressure calibrating gas channel comprises at least two standard pressure sensors respectively and a spiral pipe connected with the upstream of each standard pressure sensor in series. The invention solves the problems of troublesome transportation and complicated verification process of the verification device caused by scattered arrangement of all standard sensors in the prior art.
Description
Technical Field
The invention relates to a calibrating device for an external door and window testing machine of a building in the calibrating field.
Background
The door and window needs to be installed on the building outer wall, and for the door and window, the three mechanical properties of wind pressure resistance, air permeability and rainwater permeability need to be tested. The testing machine that can test and detect door and window is called door and window testing machine, and current door and window testing machine is like ZMC series door and window testing machine that MIS industrial system (China) limited company produced, and door and window testing machine includes the testing machine frame, installs real door and window in the testing machine frame during the use, and door and window testing machine includes suction fan and rain equipment of installing in the testing machine frame, and suction fan can produce positive pressure and negative pressure to door and window, and whether the pressure sensor door and window through door and window testing machine self accords with the requirement, and door and window testing machine still includes the gas flowmeter that detects the fan flow of suction fan. The rain equipment is used for detecting the water tightness of the doors and windows.
According to the verification rules, the pressure sensor and the gas flowmeter in the door and window testing machine are required to be regularly verified, the pressure sensor and the gas flowmeter in the door and window testing machine are removed and taken to a verification laboratory for verification, the operation process is very troublesome, later a verification device is researched, the verification device comprises a simulation window for simulating a real window, six standard flowmeters for verifying the gas flowmeter are arranged, three pairs of six standard flowmeters are arranged, each pair of standard flowmeters can be used for verifying positive pressure flow and negative pressure flow generated by a suction fan in the testing machine respectively, three groups of standard flowmeters are adopted for ensuring the accuracy value in the respective verification range, and the verification device further comprises three standard pressure sensors which are used for verifying the pressure sensor of the door and window testing machine. The standard sensors of the whole calibrating device are nine, the nine standard sensors are independent of each other and are transported independently and installed independently, when the blowing and sucking flow of the door and window testing machine is detected, six standard flow meters are required to be installed on the simulation window independently, the standard sensors are installed frequently, the calibrating process is very complicated, and meanwhile, the transportation of the whole calibrating device is also relatively troublesome.
Disclosure of Invention
The invention aims to provide a door and window testing machine, which is used for solving the problems of troublesome transportation and complex verification process of a verification device caused by scattered arrangement of standard sensors in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a calibrating device for building exterior door and window testing machine, is including being used for installing the simulation window on corresponding building testing machine, is provided with pressure value passageway and flow value passageway on the simulation window, is connected with the gas flowmeter verification unit that is used for carrying out the verification to the gas flowmeter of building testing machine and is used for carrying out the verification to the pressure sensor verification unit of building testing machine, the gas flowmeter verification unit include with the flow verification gas circuit that flow value passageway links to each other, be connected with at least two standard flowmeter that can work alone respectively on the flow verification gas circuit, the pressure sensor verification unit include with the pressure verification gas circuit that pressure value passageway links to each other, the pressure verification gas circuit includes at least two standard pressure sensor of individual work and the spiral pipe of cluster on each standard pressure sensor upper reaches.
The lee side of the simulation window is connected with an instrument cabin, and the gas flowmeter verification unit and the pressure sensor verification unit are both arranged in the instrument cabin.
Each standard flowmeter is a one-way flowmeter, the flow verification gas circuit comprises a first flow verification gas circuit and a second flow verification gas circuit which are arranged in parallel, a first switch valve is arranged on the first flow verification gas circuit, a second switch valve is arranged on the second flow verification gas circuit, the air inlet end of each standard flowmeter is connected with the first flow verification gas circuit together with the air inlet circuit, the air outlet end of each standard flowmeter is connected with the second flow verification gas circuit together with the air outlet circuit, and switch valves are arranged on the air outlet circuit, the air inlet circuit and the gas circuit where each standard flowmeter is located.
The beneficial effects of the invention are as follows: in the invention, the pressure sensor verification unit and the gas flowmeter verification unit are integrated with the simulation window, when the tester is verified, the independent verification of each standard flowmeter and each standard pressure sensor is realized through the switching of the flow verification gas path and the gas path in the pressure verification gas path, so that when the tester is transported again, each part does not need scattered transportation, the transportation is convenient, and when the tester is in verification operation, each standard sensor does not need to be independently installed again, the verification process is simplified, and the spiral pipe which is arranged on the upstream of the standard pressure sensor in a series can ensure the stability of the pressure, and ensure the verification result of the standard pressure sensor.
Further, when the suction fan of the building test machine generates positive pressure, the first switch valve is opened, the corresponding standard flow meter works, the air inlet path is closed, the air outlet path is opened, the positive pressure range verification can be carried out on the gas flow meter of the building test machine, when the suction fan of the building test machine sucks air to generate negative pressure, the second switch valve is opened, the air outlet path is closed, the air inlet path is opened, the negative pressure range verification can be carried out on the gas flow meter of the building test machine, through the selection of the air path, each standard flow meter can carry out positive pressure and negative pressure value verification, one standard flow meter is omitted, the use of the standard flow meter is reduced, the cost is saved, and the whole verification device is more compact in structure due to the use of the standard flow meter.
Drawings
FIG. 1 is a schematic diagram of the structure of one embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the dummy window of FIG. 1;
FIG. 3 is a schematic view of the structure of the windward side of the simulation window of FIG. 1;
FIG. 4 is a schematic view of the structure of the lee side of the simulation window of FIG. 1;
FIG. 5 is a schematic illustration of the mating of the gas flow meter verification unit of FIG. 1 with a simulated window;
FIG. 6 is a schematic diagram of the fit of the pressure sensor verification unit of FIG. 1 to a simulated window.
Fig. 7 is a state of use diagram of the present invention.
Detailed Description
Embodiments of the calibrating device for the building external door and window testing machine are described in fig. 1 to 7: including simulation window 2 and connect in the instrument shelter 12 of simulation window rear side, simulation window 2 is including being used for installing the front side on corresponding door and window experimental machine and being the simulation window body of windward side, and simulation window body includes preceding curb plate 4, posterior lateral plate and sets up side wall 1 all around between preceding curb plate, posterior lateral plate, and whole simulation window body is square structure, and side wall all around is hollow structure, has enclosed between preceding curb plate, posterior lateral plate and the side wall all around and has become and has eased chamber 7. The windward side of the simulation window body, namely the front side plate, is provided with a plurality of air inlets 3 which are left and right and communicated with the relaxation cavity, and each air inlet 3 is uniformly arranged at intervals along the circumference of the same circle center. Screw holes 5 with axes extending along the front-rear direction are formed in the middle and periphery of the front side plate, and the simulation window body can be fixed on the door and window experimental machine through penetrating connecting screws from front to rear when in use. The leeward side, namely the rear side plate, of the simulation window body is provided with a flow value taking channel 17 and a pressure value taking channel 18, wherein the flow value taking channel 17 is positioned at the right rear side of the circle center position surrounded by each air inlet. The leeward side pressure of the dummy window body is provided with a reinforcing rib structure 19 protruding forward.
The verification device further comprises a gas flowmeter verification unit 14 connected with the flow value channel 17 and used for verifying a gas flowmeter of the door and window experiment machine, and a pressure sensor verification unit 16 connected with the pressure value channel and used for verifying a pressure sensor of the door and window experiment machine. The gas flowmeter verification unit and the pressure sensor verification unit are installed in the instrument cabin 12, and in the invention, the gas flowmeter verification unit comprises a first standard flowmeter 27, a second standard flowmeter 28 and a third standard flowmeter 29, wherein the three measuring range limit values are sequentially increased from small to large, each standard flowmeter is a unidirectional flowmeter, the gas direction passing through the gas flowmeter can only be one direction, a first flow verification gas circuit 21 and a second flow verification gas circuit 22 which are arranged in parallel are connected to a flow value channel, a first switch valve 23 is arranged on the first flow verification gas circuit 21, and a second switch valve 24 is arranged on the second flow verification gas circuit 22. The three standard flow meters are arranged in parallel, the air inlet ends of the three standard flow meters are connected with the first flow verification air passage 21 together with the air inlet passage 25, the air outlet ends of the three standard flow meters are connected with the second flow verification air passage 22 together with the air outlet passage 26, the air inlet passage 25 and the air passages of the standard flow meters are all provided with switching valves, the switching valves of the air passages of the standard flow meters are flow regulating valves, and the switching valves of the air passages of the air outlet passage and the air inlet passage are also flow regulating valves. The pressure sensor verification unit comprises a first standard pressure sensor 32, a second standard pressure sensor 33 and a third standard pressure sensor 34, wherein the three measurement range limit values are sequentially increased from small to large, the standard pressure sensors are arranged in parallel and are connected with a pressure value channel through a first gas circuit, a switching valve and a spiral pipeline 35 are connected in series on the gas circuit of each standard pressure sensor, and the spiral pipeline 35 can further improve gas stability and ensure verification accuracy of the standard pressure sensor. In the drawing, the term 13 denotes an intake pipe communicating with the intake passage, and the term 15 denotes an exhaust pipe communicating with the exhaust passage. Item 41 in the figure shows a gas pressure regulating proportional valve connected between the pressure take-off channel and the flow verification gas circuit; item 42 represents a control panel that is connected to the corresponding instrument in the instrument pod via wireless control. The outer ring of the leeward side of the simulation window is exposed out of the instrument cabin, and the position can be matched with the pressing strip, and the simulation window is pressed and fixed through the pressing strip.
The instrument cabin is also provided with a power supply and a CPU9 for controlling each switch valve and connected with each standard pressure sensor and each standard flowmeter in a sampling way, wherein a term 10 in the figure indicates the power supply, and the rear side of the instrument cabin is provided with a liquid crystal touch screen 11. When the door and window testing machine 40 is tested, the simulation window is installed on the door and window testing machine, the suction fan of the door and window testing machine can generate positive pressure and negative pressure, and when the suction fan of the door and window testing machine generates positive pressure, the first switch valve is opened, corresponding to the standard flow meter, the air inlet channel is closed, the air outlet channel is opened, the positive pressure range test can be performed on the gas flow meter of the door and window testing machine, when the suction fan of the door and window testing machine sucks air to generate negative pressure, the second switch valve is opened, the air inlet channel is closed, the negative pressure range test can be performed on the gas flow meter of the door and window testing machine, through the selection of the air channel, each standard flow meter can perform positive pressure and negative pressure value test, one standard flow meter is omitted, the use of the standard flow meter is reduced, the cost is saved, and the door and window testing machine can be installed in an instrument cabin after the number of the standard flow meters is reduced, and high integration is realized. The on-off valves on the air path where the standard flowmeter is located are flow regulating valves, and through the use of the flow regulating valves, the state generation of small flow and high pressure can be realized, and the state of the small flow and the state of the high pressure are the main working states of the door and window testing machine. The multi-working-condition online simulation detection is realized jointly by adjusting the switching valves of the exhaust gas channel and the air inlet channel and the blowing and sucking fan of the door and window testing machine. The plurality of standard flow meters and standard pressure sensors are used to ensure the accuracy of the verification within the corresponding detection range. The verification device can also be used for verifying the glass curtain wall tester.
In other embodiments of the invention, the analog window may also be a single layer structure; the number of standard pressure sensors in the pressure sensor verification unit can be set as required, for example, two, four or other numbers; the number of standard flow meters in a gas flow meter verification unit may also be two, four, or other numbers.
Claims (1)
1. The utility model provides a calibrating installation for building exterior door and window testing machine which characterized in that: the device comprises a simulation window used for being installed on a corresponding building testing machine, wherein the simulation window is provided with a pressure value channel and a flow value channel, the simulation window is connected with a gas flowmeter verification unit used for verifying a gas flowmeter of the building testing machine and a pressure sensor verification unit used for verifying a pressure sensor of the building testing machine, the gas flowmeter verification unit comprises a flow verification gas channel connected with the flow value channel, the flow verification gas channel is connected with at least two standard flowmeters which can respectively and independently work, the pressure sensor verification unit comprises a pressure verification gas channel connected with the pressure value channel, the pressure verification gas channel comprises at least two standard pressure sensors which respectively and independently work and a spiral pipe which is connected with the upstream of each standard pressure sensor in series, the leeward side of the simulation window is connected with an instrument cabin, the gas flowmeter verification unit and the pressure sensor verification unit are all arranged in the instrument cabin, each standard flowmeter is a one-way flowmeter, the flow gas channel comprises a first flow verification gas channel and a second flow verification gas channel which are arranged in parallel, a first opening and closing valve is arranged on the flow verification gas channel, the second flow verification gas channel is connected with a second flow verification gas channel, the second flow verification gas channel is provided with a second opening and closing valve is connected with a third standard gas channel, and an air inlet flow meter and an air inlet valve, a third standard flow meter and an air inlet valve are connected with a third standard air channel and an air inlet meter and an air outlet, and a standard flow meter are connected with a standard air inlet meter and a standard flow meter and an air outlet and a standard meter are arranged in sequence, and a standard air inlet and a standard flow meter is connected with a standard air and an air meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810633580.6A CN108709696B (en) | 2018-06-20 | 2018-06-20 | Calibrating device for building exterior door and window testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810633580.6A CN108709696B (en) | 2018-06-20 | 2018-06-20 | Calibrating device for building exterior door and window testing machine |
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| Publication Number | Publication Date |
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| CN108709696A CN108709696A (en) | 2018-10-26 |
| CN108709696B true CN108709696B (en) | 2024-04-05 |
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| CN201810633580.6A Active CN108709696B (en) | 2018-06-20 | 2018-06-20 | Calibrating device for building exterior door and window testing machine |
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Families Citing this family (4)
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| CN109612763A (en) * | 2019-01-16 | 2019-04-12 | 中铁第四勘察设计院集团有限公司 | The clamping mechanism of tunnel protection door and pressure decay test device comprising the clamping mechanism |
| CN109668709B (en) * | 2019-01-16 | 2024-08-06 | 中铁第四勘察设计院集团有限公司 | Wind pressure test system suitable for tunnel protection door |
| CN110672263A (en) * | 2019-09-02 | 2020-01-10 | 南京理工大学 | Shock wave pressure sensor field calibration device and method |
| CN112254877B (en) * | 2020-09-03 | 2022-10-18 | 河南大亘计量检测研究院有限公司 | Calibrating device of building element testing machine |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814357Y (en) * | 2005-07-04 | 2006-09-06 | 西安佳禾资讯发展有限公司 | Sound speed nozzle gas flowmeter detector by barotropic process |
| CN101358871A (en) * | 2008-08-05 | 2009-02-04 | 美新半导体（无锡）有限公司 | Actual flow circle calibrating apparatus for gas flowmeter and calibrating method thereof |
| JP2010169008A (en) * | 2009-01-23 | 2010-08-05 | Toyota Motor Corp | Abnormality detector for pressure sensor |
| CN103471686A (en) * | 2013-09-17 | 2013-12-25 | 陕西天仪智能仪表有限公司 | Gas flow standard device and application method thereof |
| CN103499373A (en) * | 2013-09-30 | 2014-01-08 | 中国计量学院 | Automobile oil tank truck capacity automatic inspection device with self-calibration function and inspection method |
| CN203479371U (en) * | 2013-09-17 | 2014-03-12 | 陕西天仪智能仪表有限公司 | Gas flow standard device |
| CN204330091U (en) * | 2014-12-01 | 2015-05-13 | 镇江市计量检定测试中心 | Bell jar type gas flowmeter calibrating installation |
| CN204373928U (en) * | 2015-01-15 | 2015-06-03 | 淮安市计量测试所 | The calibrating device of building doors and windows comprehensive physical performance aircraft |
| CN206177860U (en) * | 2016-10-21 | 2017-05-17 | 中国民用航空飞行学院 | Full -scale multi -functional vary voltage of plane cargo space experiment test system |
| CN206904593U (en) * | 2017-03-09 | 2018-01-19 | 佛山市顺德区港华燃气有限公司 | A kind of combustion gas bidirectional measuring regulator |
| CN207366058U (en) * | 2017-09-30 | 2018-05-15 | 广州能源检测研究院 | One kind is positive and negative to blow bell-jar gas flow standard equipment |
| CN208313534U (en) * | 2018-06-20 | 2019-01-01 | 河南省计量科学研究院 | Building external doors and windows testing machine calibrating installation |
-
2018
- 2018-06-20 CN CN201810633580.6A patent/CN108709696B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814357Y (en) * | 2005-07-04 | 2006-09-06 | 西安佳禾资讯发展有限公司 | Sound speed nozzle gas flowmeter detector by barotropic process |
| CN101358871A (en) * | 2008-08-05 | 2009-02-04 | 美新半导体（无锡）有限公司 | Actual flow circle calibrating apparatus for gas flowmeter and calibrating method thereof |
| JP2010169008A (en) * | 2009-01-23 | 2010-08-05 | Toyota Motor Corp | Abnormality detector for pressure sensor |
| CN103471686A (en) * | 2013-09-17 | 2013-12-25 | 陕西天仪智能仪表有限公司 | Gas flow standard device and application method thereof |
| CN203479371U (en) * | 2013-09-17 | 2014-03-12 | 陕西天仪智能仪表有限公司 | Gas flow standard device |
| CN103499373A (en) * | 2013-09-30 | 2014-01-08 | 中国计量学院 | Automobile oil tank truck capacity automatic inspection device with self-calibration function and inspection method |
| CN204330091U (en) * | 2014-12-01 | 2015-05-13 | 镇江市计量检定测试中心 | Bell jar type gas flowmeter calibrating installation |
| CN204373928U (en) * | 2015-01-15 | 2015-06-03 | 淮安市计量测试所 | The calibrating device of building doors and windows comprehensive physical performance aircraft |
| CN206177860U (en) * | 2016-10-21 | 2017-05-17 | 中国民用航空飞行学院 | Full -scale multi -functional vary voltage of plane cargo space experiment test system |
| CN206904593U (en) * | 2017-03-09 | 2018-01-19 | 佛山市顺德区港华燃气有限公司 | A kind of combustion gas bidirectional measuring regulator |
| CN207366058U (en) * | 2017-09-30 | 2018-05-15 | 广州能源检测研究院 | One kind is positive and negative to blow bell-jar gas flow standard equipment |
| CN208313534U (en) * | 2018-06-20 | 2019-01-01 | 河南省计量科学研究院 | Building external doors and windows testing machine calibrating installation |
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| CN108709696A (en) | 2018-10-26 |
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