KR20020019279A - Apparatus for correcting the error value of the platinum thermometer - Google Patents
Apparatus for correcting the error value of the platinum thermometer Download PDFInfo
- Publication number
- KR20020019279A KR20020019279A KR1020000052445A KR20000052445A KR20020019279A KR 20020019279 A KR20020019279 A KR 20020019279A KR 1020000052445 A KR1020000052445 A KR 1020000052445A KR 20000052445 A KR20000052445 A KR 20000052445A KR 20020019279 A KR20020019279 A KR 20020019279A
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- Prior art keywords
- thermometer
- platinum resistance
- resistance thermometer
- thermostat
- base plate
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 37
- 230000008014 freezing Effects 0.000 claims abstract description 13
- 238000007710 freezing Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/101—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using intermittent driving, e.g. step motors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
본 발명은 백금저항 온도계의 오차를 교정하는 장치에 관한 것이고, 특히 제철소에서와 같이 다양한 규격의 온도계를 정해진 시간 내에 신속하게 정확하게 다량으로 교정할 수 있는 백금저항 온도계의 교정장치에 관한 것이다.The present invention relates to a device for calibrating the error of the platinum resistance thermometer, and more particularly to a calibration device for a platinum resistance thermometer that can quickly and accurately correct a large amount of thermometers of various standards, such as in steel mills.
일반적으로, 백금저항 온도계는, 도 1에 도시된 바와 같이, 백금소선(2)에 열을 가하면 소선(2)이 늘어나게 되며, 이에 따라 변화되는 소선(2)의 저항을 온도로 환산하여 온도를 측정하는 온도 측정기이다.In general, the platinum resistance thermometer, as shown in Figure 1, when the heat is applied to the platinum wire (2), the element wire 2 is increased, thereby converting the resistance of the element wire (2) that is changed according to the temperature to increase the temperature It is a temperature meter to measure.
한편, 제철소 내에는 코크스공장, 산소공장, 냉연소둔공장, 도금공장 등과 같이 상온에서 정확한 온도제어가 필요한 장소가 있으며, 이를 위하여 사용되는 백금저항 온도계는 그 사용되는 장소에 따라 다양한 규격으로 이루어진다. 한편, 온도계는 측정 신뢰도를 확보하기 위하여 품질 규정에 의해 주기적으로 교정검사를 실시된다.On the other hand, there are places where accurate temperature control is required at room temperature, such as a coke plant, an oxygen plant, a cold rolling annealing plant, a plating plant, and the like, and the platinum resistance thermometer used for this purpose is made of various standards depending on the place used. On the other hand, the thermometer is periodically inspected by the quality regulations to ensure the reliability of the measurement.
이와 같이 백금저항 온도계의 교정검사를 위하여, 도 2에 도시된 바와 같이,항온조(4)가 사용된다. 항온조(4)는 가열장치(8)에 의해 온도를 수℃까지 올릴 수 있는 장치로서, 항상 균일한 온도를 유지하기 수조 내에 광물성 오일(7)이 채워진 상태로 유지된다. 한편, 도 3에 도시되어 있는 빙점조(6)는 물의 삼중점, 즉 0℃를 재현하기 위해 얼음과 물이 적절하게 혼합된 생태로 장시간 유지할 수 있는 부재이다.Thus, for the calibration test of the platinum resistance thermometer, as shown in Figure 2, a thermostat 4 is used. The thermostat 4 is a device capable of raising the temperature to several degrees Celsius by the heating device 8, and is maintained in a state where the mineral oil 7 is filled in the water tank to maintain a uniform temperature at all times. On the other hand, the ice point tank 6 shown in FIG. 3 is a member that can be maintained for a long time in an ecologically appropriate mixture of ice and water in order to reproduce the triple point of water, that is, 0 ° C.
빙점조(6)에서 온도계의 0점을 확인한 후, 항온조(4)에 기준온도계(10)와 백금저항 온도계(1)를 동시에 설치하고, 가열장치(8)를 이용하여 일정하게 온도를 상승시킨다. 이때, 휴대용 저항측정기(3)로 소선(2)의 저항 변화를 측정하면서 기준온도계(10)와 백금저항 온도계(1)의 값을 비교하여 백금저항 온도계를 교정하게 된다.After checking the zero point of the thermometer in the freezing point tank 6, the reference thermometer 10 and the platinum resistance thermometer 1 are installed at the same time in the thermostat 4, and the temperature is constantly raised by using the heating device 8. . At this time, while comparing the values of the reference thermometer 10 and the platinum resistance thermometer 1 while measuring the resistance change of the element wire 2 with the portable resistance meter 3, the platinum resistance thermometer is calibrated.
그러나, 상기된 바와 같은 온도계 교정방식에 따르면, 제철소와 같이 매우 다양한 규격의 백금저항 온도계를 다량으로 사용하는 경우, 교정에 많은 시간과 인력과 항온조가 필요하고 또한 그 측정범위 만큼 온도의 승온 및 감온의 반복에 의해 항온조의 수명이 단축되고 에너지를 낭비하며 측정능률과 측정 정밀도가 저하되는 문제점이 있다.However, according to the thermometer calibration method as described above, in the case of using a large amount of platinum resistance thermometer, such as steel mills in large quantities, it takes a lot of time, manpower and a thermostat for the calibration, and the temperature rise and fall of temperature by the measurement range Due to the repetition of the lifespan of the thermostat is shortened, wastes energy, and the measurement efficiency and measurement accuracy is degraded.
항온조(4)와 빙점조(6)가 별도로 제작되어 서로 이격되어 있으므로, 빙점조(6)에서 작업이 끝나면 많은 양의 온도계를 항온조(4)로 옮겨야 하므로 운반도중 손상되고 시간과 인력이 필요하게 된다.Since the thermostat (4) and the freezing tank (6) are separately manufactured and spaced apart from each other, when the work in the freezing tank (6) is finished, a large amount of thermometers must be moved to the thermostat (4) so that it is damaged during transportation and requires time and labor do.
한편, 도 3에 도시된 바와 같이, 길이가 각각 다른 백금저항 온도계를 기준 온도계(10)와 비슷한 위치의 기준구간 내에 설치해야 온도편차가 발생하지 않지만,정확한 고정장치가 없으므로, 기준구간 내에 백금저항 온도계를 설치하지 못하여 온도편차가 발생되는 문제점이 있다.On the other hand, as shown in Figure 3, the platinum resistance thermometers of different lengths must be installed in a reference section at a position similar to the reference thermometer 10, so that no temperature deviation occurs, but because there is no precise fixing device, the platinum resistance in the reference section There is a problem that a temperature deviation occurs due to the installation of a thermometer.
본 발명은 상기된 바와 같은 종래의 문제점을 해소하기 위하여 안출된 것으로, 다양한 길이의 온도계를 하나의 스탠드에 다수개 설치하며 각각의 측정점을 기준구간 내에 위치시킬 수 있도록 높이를 조절할 수 있으며, 빙점조와 항온조 사이를 이동하는 것과 항온조의 승온 및 감온을 수행하는 조작을 전자동으로 수행하며, 데이터의 수집과 처리를 프로그램에 의해 실시하는 백금저항 온도계의 자동교정장치를 제공하는 데 그 목적이 있다.The present invention has been made to solve the conventional problems as described above, install a plurality of thermometers of various lengths in one stand and can adjust the height so that each measuring point can be located within the reference section, It is an object of the present invention to provide an automatic calibration device for a platinum resistance thermometer which performs the operation of moving between the thermostats and the temperature raising and lowering of the thermostat automatically and automatically performing data collection and processing by a program.
도 1은 일반적인 백금저항 온도계를 도시한 도면.1 is a view showing a typical platinum resistance thermometer.
도 2는 종래 실시예에 따라서 백금저항 온도계를 항온조에서 교정하는 상태를 도시한 도면.2 is a view showing a state in which a platinum resistance thermometer is calibrated in a thermostat according to a conventional embodiment.
도 3은 종래 실시예에 따라서 백금저항 온도계를 빙점조에서 교정하는 상태를 도시한 도면.3 is a view showing a state in which the platinum resistance thermometer is calibrated in the freezing point according to the conventional embodiment.
도 4는 본 발명의 실시예에 따른 백금저항 온도계의 교정장치를 도시한 도면.4 is a view showing a calibration device of a platinum resistance thermometer according to an embodiment of the present invention.
도 5는 본 발명의 실시예에 따른 백금저항 온도계의 교정장치의 단면도.5 is a cross-sectional view of a calibration device of a platinum resistance thermometer according to an embodiment of the present invention.
< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>
1 : 백금저항 온도계1: platinum resistance thermometer
10 : 기준 온도계10: reference thermometer
100 : 항온조부100: thermostat
101 : 빙점조101: freezing point
102 : 항온조102: thermostat
103 : 베이스 플레이트103: base plate
110 : 스탠드부110: stand portion
111 : 수직축111: vertical axis
116 : 스텝모타116: step motor
상기 목적을 달성하기 위한 본 발명에 따르면, 백금저항 온도계의 자동교정장치는 복수개의 빙점조가 형성되어 있고 그 상부에는 상기 빙점조에 대응하는 관통구가 형성되어 있는 베이스 플레이트가 조립되어 있는 항온조부와, 상기 빙점조 각각에 대응하도록 상기 베이스 플레이트 상에 직립상태로 설치되어 있는 스탠드부와, 상기 스탠드부의 하부에 회전가능하게 장착되는 회전판과, 상기 스탠드부의 축을 따라서 상하 이동이 가능하도록 상기 회전판 상에 장착되는 원통부재와, 상기 원통부재의 소정 위치에 높이조절이 가능하도록 장착되는 고정단부 및 상기 고정단부로부터 외부로 연장하고 자유단부에 온도계 고정판이 부착되어 있는 복수개의 외팔보부재로 이루어져 있는 것을 특징으로 한다.According to the present invention for achieving the above object, the automatic calibration device of the platinum resistance thermometer is formed with a plurality of freezing tanks, a thermostat unit is assembled with a base plate formed thereon through-holes corresponding to the freezing tanks; A stand part installed in an upright state on the base plate so as to correspond to each of the freezing points, a rotating plate rotatably mounted on the lower part of the stand part, and mounted on the rotating plate to allow vertical movement along the axis of the stand part. It is characterized in that it consists of a cylindrical member, a fixed end that is mounted to be able to adjust the height at a predetermined position of the cylindrical member and a plurality of cantilever members extending outward from the fixed end and a thermometer fixing plate attached to the free end. .
이하, 첨부도면을 참조하여 본 발명의 실시예를 설명한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
본 발명의 실시예에 따른 백금저항 온도계의 자동교정장치에는 빙점조(101)와 항온조(102)가 일체화 되어 있고, 베이스 플레이트(103)가 상부에 조립되어 있는 항온조부(100)가 제공된다.The automatic calibration apparatus of the platinum resistance thermometer according to the embodiment of the present invention is provided with a thermostat section 100 in which an ice point tank 101 and a thermostat chamber 102 are integrated, and a base plate 103 is assembled on the upper portion.
항온조부(100)에는 복수개의 빙점조(101)와 항온조(102)가 일체형으로 구성되고, 항온조(102) 상부에는 베이스 플레이트(103)가 조립되어 있다. 항온조(102) 측면에는 오일받이(104)와 물받이(105)가 각각 복수개 설치되어 있다.A plurality of ice-cold tanks 101 and a thermostat 102 are integrally formed in the thermostat part 100, and a base plate 103 is assembled on the thermostat 102. On the side surface of the thermostat 102, a plurality of oil reservoirs 104 and drip trays 105 are provided.
본 발명에 따르면, 자동교정장치에는 온도계를 빙점조(101)와 항온조(102)로 각각 이동시키는 스탠드부(110)가 제공된다. 상기 스탠드부(110)는 베이스 플레이트(103) 상에 복수개 설치되고, 그 수직축(111)은 베어링(112)에 의해 베이스 플레이트(103)에 지지된다. 베이스 플레이트(103) 상면부에서 워엄휠(114)과 조립되고, 워엄기어(115)와 스텝모타(116)가 한 조를 이루어 구성된다.According to the present invention, the automatic calibration device is provided with a stand 110 for moving the thermometer to the ice point bath 101 and the thermostat 102, respectively. The stand part 110 is provided on a plurality of base plates 103, the vertical axis 111 is supported by the base plate 103 by a bearing (112). It is assembled with the worm wheel 114 in the upper surface of the base plate 103, the worm gear 115 and the step motor 116 is composed of a pair.
나사축(118)은 수직축(111)에 삽입되며, 복수개의 온도계 고정판(120ㅇ)이 나사축(118)에 조립되고, 전기실린더(125)는 실린더 지지대(126)와 연결판(127)에 의해 워엄휠(114)과 나사축(118) 사이에 고정된다.The screw shaft 118 is inserted into the vertical shaft 111, the plurality of thermometer fixing plate 120 is assembled to the screw shaft 118, the electric cylinder 125 to the cylinder support 126 and the connecting plate 127 By the worm wheel 114 and the screw shaft 118 is fixed.
또한, 본 발명에 따른 자동교정장치에는 다수개의 온도계를 연결하고 각각의 저항값을 측정하는 측정기부와 제어부가 제공된다. 상기 측정기부(130)의 자동스위칭 유니트(131)는 다수개의 소선(2)을 한꺼번에 연결할 수 있는 구조이며, 정밀 저항 측정기(132)는 소선(2)의 저항값을 정확하게 측정하여 컴퓨터(141)에 전송한다. 그리고, 상기 제어부(140)는 프로그램을 내장한 컴퓨터(141)와 각 요소를 제어하는 콘트롤 박스(142)로 구성된다.In addition, the automatic calibration apparatus according to the present invention is provided with a measuring unit and a controller for connecting a plurality of thermometers and measuring respective resistance values. The automatic switching unit 131 of the measuring unit 130 has a structure capable of connecting a plurality of wires 2 at a time, and the precision resistance measuring device 132 accurately measures the resistance value of the wires 2 to the computer 141. To transmit. The control unit 140 includes a computer 141 in which a program is embedded and a control box 142 for controlling each element.
이하, 본 발명의 작동을 상세히 설명한다.Hereinafter, the operation of the present invention will be described in detail.
복수개의 백금저항 온도계(1)와 기준 온도계(10)를 온도계 고정판(120)에 각각 삽입하고, 상하 조절너트(123)를 이용하여 적절하게 높낮이를 조절한 후, 로크볼트(124)로 고정한다.Insert a plurality of platinum resistance thermometer (1) and the reference thermometer 10 to the thermometer fixing plate 120, and adjust the height appropriately using the up and down adjustment nut 123, and then fixed with a lock bolt (124). .
상기 제어부(140)의 컴퓨터(141)의 프로그램을 가동시키면, 스텝모타(116)가 회전하게 되고, 이에 연결된 워엄기어(115)와 워엄휠(114)이 회전하면, 스탠드부(110) 전체가 회전하여 대기 위치에 있던 온도계를 빙점조(101) 상부로 이동시킨다.When the program of the computer 141 of the control unit 140 is operated, the step motor 116 is rotated, and when the worm gear 115 and the worm wheel 114 are connected thereto, the whole stand unit 110 is rotated. By rotating, the thermometer in the standby position is moved to the upper portion of the ice point tank 101.
순차적으로, 전기 실린더(125)가 동작하여 그 길이가 수축되면, 온도계 고정판(120)에 설치되어 있는 백금저항 온도계(1)와 기준 온도계(10)가 빙점조(101)에 잠기게 되고, 일정대기 시간이 지나 열평형이 이루어지면, 자동스위칭 유니트(131)와 정밀저항 측정기(132)는 연결된 온도계의 순서에 입각하여 각각의 저항값을 측정하여 컴퓨터(141)에 전송하면, 컴퓨터(141)는 그 결과를 저장한다.In sequence, when the electric cylinder 125 is operated and its length is contracted, the platinum resistance thermometer 1 and the reference thermometer 10 installed on the thermometer fixing plate 120 are locked to the ice point tank 101, When the thermal balance is achieved after the waiting time passes, the automatic switching unit 131 and the precision resistance measuring instrument 132 measure the resistance values based on the sequence of the connected thermometer and transmit the resistance values to the computer 141. Stores the result.
상기 빙점조(101)에서 0점 조정이 완료되면, 전기 실린더(125)가 팽창되어 결과적으로 온도계 고정판(120)에 고정된 온도계(1)를 들어올리면, 스텝 모타(116)가 회전하여 온도계(1)를 물받이 위치로 이동시킨다.When the zero point adjustment is completed in the freezing point 101, when the electric cylinder 125 is expanded to lift the thermometer 1 fixed to the thermometer fixing plate 120 as a result, the step motor 116 rotates and the thermometer ( Move 1) to the drip tray position.
이때, #B 스탠드부(110b)는 대기 위치에서 빙점조(101) 위치로 이동하여 빙점 측정을 실시한다.At this time, the #B stand portion 110b moves from the standby position to the freezing point 101 position and performs freezing point measurement.
또한, #A 스탠드부(110a)의 온도계(1)는 #B 스탠드부(110b)의 온도계(1)가 측정되는 동안 온도계(1)에 묻은 물이 물받이(105)를 타고 흘러내려 건조될 때까지 대기한다. 이후, 스텝모타(116)와 워엄휠(114)을 이용하여 온도계(1)를 항온조(102)로 이동시켜, 전기 실린더(125)를 수축시킴으로써, 항온조(102) 속으로 온도계(1)를 삽입시키고, 온도를 올려가면서 기준 온도계(10)와 백금저항 온도계(1)의 저항변화를 정밀저항 측정기(132)로 측정하고 상호비교하여, 그 오차를 컴퓨터(141) 프로그램으로 산출한다.In addition, when the thermometer 1 of the #A stand part 110a flows through the drip tray 105 while the water adhered to the thermometer 1 is dried while the thermometer 1 of the #B stand part 110b is measured. Wait until Thereafter, the thermometer 1 is moved to the thermostat 102 by using the step motor 116 and the worm wheel 114, and the electric cylinder 125 is contracted to insert the thermometer 1 into the thermostat 102. As the temperature is raised, the resistance change of the reference thermometer 10 and the platinum resistance thermometer 1 is measured by the precision resistance measuring instrument 132 and compared with each other, and the error is calculated by the computer 141 program.
따라서, 상기된 바와 같은 본 발명에 따르면, 백금저항 온도계의 교정검사시, 컴퓨터에 의해 전 공정이 자동으로 수행되며, 길이가 다양한 온도계를 하나의 스탠드에 다수개 설치하여 한꺼번에 측정할 수 있고, 측정 결과에 대한 데이터 처리를 프래그램에 의해 실시하여, 교정 정밀도와 작업능률을 향상시킬 수 있다.Therefore, according to the present invention as described above, during the calibration test of the platinum resistance thermometer, the entire process is automatically performed by a computer, can be measured at a time by installing a plurality of thermometers of various lengths in one stand, measuring at once Data processing on the result can be performed by the program to improve the calibration accuracy and work efficiency.
이상, 상기 내용은 본 발명의 바람직한 실시예를 단지 예시한 것으로, 본 발명이 속하는 분야의 당업자는 첨부된 청구범위에 기재된 본 발명의 사상 및 요지로부터 벗어나지 않고 본 발명에 대한 수정 및 변경을 가할 수 있다는 것을 인식하여야 한다.The foregoing has merely exemplified preferred embodiments of the present invention, and those skilled in the art to which the present invention pertains may make modifications and changes to the present invention without departing from the spirit and gist of the present invention as set forth in the appended claims. It should be recognized.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000052445A KR20020019279A (en) | 2000-09-05 | 2000-09-05 | Apparatus for correcting the error value of the platinum thermometer |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020000052445A KR20020019279A (en) | 2000-09-05 | 2000-09-05 | Apparatus for correcting the error value of the platinum thermometer |
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| KR20020019279A true KR20020019279A (en) | 2002-03-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100887871B1 (en) * | 2001-12-26 | 2009-03-06 | 주식회사 포스코 | Reform apparatus for thermometer |
| CN102853939A (en) * | 2012-09-03 | 2013-01-02 | 江苏大学 | Real-time monitoring device and method of vinegar grains fermentation process |
| CN105606243A (en) * | 2016-02-19 | 2016-05-25 | 云南中烟工业有限责任公司 | Temperature detection device capable of measuring axial temperature field of cigarette filter rod |
| CN110076101A (en) * | 2019-01-31 | 2019-08-02 | 辽宁科技大学 | A kind of mercurial thermometer intelligent calibration sorting system and control method |
| KR20220094972A (en) * | 2020-12-29 | 2022-07-06 | 주식회사 태크녹스 | Temperature sensor calibrating device using a constant-temperature bath |
-
2000
- 2000-09-05 KR KR1020000052445A patent/KR20020019279A/en not_active Application Discontinuation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100887871B1 (en) * | 2001-12-26 | 2009-03-06 | 주식회사 포스코 | Reform apparatus for thermometer |
| CN102853939A (en) * | 2012-09-03 | 2013-01-02 | 江苏大学 | Real-time monitoring device and method of vinegar grains fermentation process |
| CN105606243A (en) * | 2016-02-19 | 2016-05-25 | 云南中烟工业有限责任公司 | Temperature detection device capable of measuring axial temperature field of cigarette filter rod |
| CN110076101A (en) * | 2019-01-31 | 2019-08-02 | 辽宁科技大学 | A kind of mercurial thermometer intelligent calibration sorting system and control method |
| CN110076101B (en) * | 2019-01-31 | 2021-07-06 | 辽宁科技大学 | Intelligent calibration sorting system for mercury thermometer and control method |
| KR20220094972A (en) * | 2020-12-29 | 2022-07-06 | 주식회사 태크녹스 | Temperature sensor calibrating device using a constant-temperature bath |
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