JP2011191251A - Instrument and method for calibrating contact type surface temperature sensor, and method for calibrating reference temperature sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrument and a method for calibrating a contact type surface temperature sensor for bringing a temperature sensing part into contact with the surface of a measured temperature body to accurately compare and calibrate the contact type surface temperature sensor measuring the surface temperature, and to provide a method for calibrating a reference temperature sensor. <P>SOLUTION: The instrument 10 for calibrating the contact type surface temperature sensor for calibrating the contact type surface temperature sensor 20 fixes and arranges the reference temperature sensor 30 on a reference block 11 contacting the temperature sensing part 21 of the contact type surface temperature sensor 20, is brought into contact with the reference block 11, and constitutes the reference block 11 separable from a heating block 14 providing a heating source 17 in which the reference block 11 is heated to increase the temperature. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a contact surface temperature sensor calibrator for calibrating a surface temperature sensor such as a contact temperature sensor, a calibration method for a contact surface temperature sensor, and a calibration method for a reference temperature sensor.

  In order to measure the temperature of a moving surface of a temperature-measured object such as a moving or stopped material or product, there is a contact-type surface temperature sensor that directly contacts the surface and measures the surface temperature. When calibrating the contact-type surface temperature sensor, as shown in FIG. 12, the soaking block 11X having the surface 11X with which the temperature-sensing portion 21 of the contact-type surface temperature sensor 20 is brought into contact with the soaking block 11X is heated. A contact type surface temperature sensor calibrator 10X having a heating source 12 such as a heater and a reference temperature sensor 30X inserted in the soaking block 11X is used.

  The soaking block 11X is made of copper having a high thermal conductivity, and the temperature sensing part 31X of the reference temperature sensor 30X is made of a resistance temperature detector. The reference temperature sensor 30X is detachably inserted and disposed at a position about 10 mm below the surface 11Xs.

  When the contact-type surface temperature sensor calibrator 10X is used to calibrate the contact-type surface temperature sensor 20, the soaking block 11X is heated by the heating source 12 to increase the temperature, and the reference temperature sensor Measure the reference temperature at 30X. The temperature sensing part 21 of the contact type surface temperature sensor 20 that performs calibration is brought into contact with the surface of the reference surface 11Xs of the soaking block 11X, and the reference temperature that is the output temperature of the contact type surface temperature sensor 20 and the output of the reference temperature sensor 30X. The contact type surface temperature sensor 20 is calibrated by comparing the temperature.

  In this calibration method, the temperature difference between the surface of the reference surface 11Xs and the reference temperature measurement point 31X of the reference temperature sensor 30X is obtained by forming the soaking block 11X with copper having excellent thermal conductivity. It is small. Further, by directly heating the soaking block 11X with the heating source 21, the structure and temperature control of the calibrator 10X can be simplified and temperature management can be easily performed.

  Furthermore, as the temperature sensing portion 31X of the reference temperature sensor 30X, a contact-type surface temperature sensor is used with high accuracy over a long period of time by using a resistance temperature detector that is excellent in long-term temperature stability and has little temperature fluctuation due to aging. 20 calibrations are possible.

  Further, it is necessary to calibrate the reference temperature sensor 30X. The calibration of the reference temperature sensor 30X is extracted from the calibrator 10X and performed by another calibrator. In the calibrator 10X, the sheath temperature measuring resistor is used for the reference temperature sensor 30X, thereby facilitating the extraction and insertion of the reference temperature sensor 30X.

  However, in this contact-type surface temperature sensor calibrator 10X, the soaking block 11X is made of copper that cannot withstand a high temperature of 500 ° C. or higher, and the temperature measuring resistor used in the reference temperature sensor 30X has a temperature of 500 ° C. or higher. Since the temperature cannot be measured, there is a problem that the contact-type surface temperature sensor 20 cannot be calibrated at a temperature of 500 ° C. or higher.

  With regard to the calibration of this temperature sensor, a number of calibrations are carried out in order to quickly confirm the operation state of a large number of temperature sensors (thermocouples, resistance thermometers, semiconductor thermometers, etc.) collectively at the actual measurement site. A temperature sensor for calibration, which is a temperature sensor and a reference thermometer, is made of a good heat conduction material such as copper, aluminum, SUS, etc., and is inserted into the storage hole of a constant temperature block that can be maintained in a uniform temperature state. The temperature of the temperature sensor to be calibrated is compared by comparing the temperature value of the temperature sensor to be calibrated with the temperature value of the calibration temperature sensor. A calibration method has been proposed (see, for example, Patent Document 1).

  In addition, as a means to extend the calibration range of the temperature sensor to a higher temperature range, the temperature sensor to be calibrated (resistance temperature detector) and the reference temperature sensor to be used as standard (standard temperature detector) are connected to a soaking block in the calibration furnace. In the calibration method that calibrates the temperature sensor to be calibrated by comparing both output temperatures by inserting into the insertion hole, the soaking block is composed of silver or silver alloy, or gold or gold alloy, Improving the thermal conductivity and increasing the heat capacity, stabilizing the temperature of the soaking block, and communicating the temperature of the comparative calibration furnace to the accurately inserted temperature sensor, the temperature range that can be calibrated is less than 600 ° C or 1000 There has been proposed a comparative calibration method capable of realizing a comparative calibration test with high accuracy up to below ° C (see, for example, Patent Document 2).

  However, these comparative calibration methods cannot be applied to contact-type surface temperature sensors that need to be brought into contact with the surface of the temperature-measured body, and use of silver or gold increases the production cost of the soaking block. There is a problem that it ends up.

JP 2000-304627 A JP-A-8-136361

  The present invention has been made in view of the above-described problems, and its purpose is a contact that can accurately calibrate a contact-type surface temperature sensor that measures a surface temperature by contacting a temperature sensing portion with the surface of a temperature-measured body. A surface temperature sensor calibrator, a contact surface temperature sensor calibration method, and a reference temperature sensor calibration method.

  In order to achieve the above object, a contact surface temperature sensor calibrator according to the present invention is a contact surface temperature sensor calibrator for calibrating a contact surface temperature sensor. The reference block is configured to be separable from the heating block in which a reference temperature sensor is fixedly disposed on the reference block that contacts the temperature unit, and a heating source is provided in contact with the reference block to heat the reference block and raise the temperature. To do.

  According to this configuration, the reference temperature sensor is fixedly arranged by spot welding, adhesion, or the like, so that the reference temperature sensor can be detachably inserted into the storage hole or insertion hole of the reference block. The degree of adhesion between the sensor and the reference block can be remarkably increased, and the heat conduction efficiency can be remarkably increased during this time, so that the surface temperature of the reference block can be accurately measured by the reference temperature sensor.

  In addition, by configuring the reference block to be separable from the heating source, the reference block can be reduced in size so that the reference block with the reference temperature sensor fixed can enter another calibrator. Calibration of the sensor becomes easy.

  In the contact type surface temperature sensor calibrator described above, when the temperature sensing portion of the reference temperature sensor is fixedly disposed on the surface of the reference surface of the reference block or in the vicinity of the surface, the reference for bringing the surface temperature sensor into contact with the reference block The distance between the surface of the surface and the position of the reference temperature sensor is shortened. For example, even if the reference block is made of a material with poor thermal conductivity, the distance between the surface of the reference surface and the temperature sensing part of the reference temperature sensor Since the temperature difference can be reduced, the temperature of the reference surface can be measured with higher accuracy. That is, the temperature of the surface of the reference surface can be accurately measured even for a heat-resistant metal having a lower thermal conductivity than copper having a high thermal conductivity.

  The temperature sensing part of the reference temperature sensor is fixed to the reference block by, for example, spot welding or bonding the temperature sensing part of the thermocouple to the surface of the reference block or in the vicinity of the surface (in the range of 0 to 5 mm below the surface). And do it.

  In the contact surface temperature sensor calibrator, when the temperature sensing part of the reference temperature sensor is fixedly arranged on the reference block, the temperature sensing part of the reference temperature sensor is placed on an installation surface adjacent to the reference surface. Is fixedly placed in an embedded or circumscribed manner, and a heat retaining block is disposed in contact with the installation surface, and further, a contact surface that contacts the installation surface of the reference block or the installation surface of the heat retaining block. If one or both of them are provided with a storage groove to store the temperature sensing part of the reference temperature sensor and a part of the lead wire connected to the temperature sensing part, the following effects can be obtained. it can. According to this configuration, the reference surface on which the contact-type surface temperature sensor abuts is smooth because the temperature sensing portion of the reference temperature sensor is embedded or externally attached to the installation surface adjacent to the reference surface, not the reference surface. The reference temperature sensor can be easily fixed and placed in the state. Further, since the reference surface can be maintained in a smooth state, calibration can be performed while bringing the contact surface temperature sensor into contact with the reference surface in a state closer to the actual measurement state.

  In addition, since the temperature sensor of the reference temperature sensor and a part of the lead wire are stored in the storage groove provided in at least one of the reference block and the heat insulation block, the reference block and the heat insulation block are surrounded around the temperature sensor of the reference temperature sensor. And the contact surface of the heat insulation block can be brought into close contact with each other, so that the heat conduction efficiency between them can be made high.

  Therefore, the temperature of the reference block and the heat insulation block can be made uniform, and at the time of calibration, the heat capacity of the reference block and the heat insulation block has a large heat capacity. The rate of heat transfer that occurs can be reduced relative to the overall heat capacity of the calibrator. As a result, the amount of change in the surface temperature of the reference surface due to the contact of the contact surface temperature sensor can be reduced, and since the heat conduction efficiency is high, the temperature of the temperature sensing part of the contact surface temperature sensor and the temperature of the reference block can be quickly achieved. Can be equalized. As a result, calibration accuracy can be increased.

  In the above temperature sensor calibrator, when the reference block is formed of Inconel (INCONEL (registered trademark)), the reference temperature sensor is formed of a type R thermocouple, and the heating source is formed of an electric heater, 500 ° C. or more With regard to calibration in the high temperature range, the inconel that can be used even at a high temperature of 500 ° C. or higher can solve the problem that the heat resistance of the copper reference block in the prior art is insufficient, and the reference temperature sensor Is a type R thermocouple capable of measuring up to a high temperature of 500 ° C. or higher, thereby solving the problem that it is difficult to measure the reference temperature sensor at a high temperature.

  Inconel's thermal conductivity is as small as about 1/25 that of copper, so a temperature difference is likely to occur between the surface and the measurement point of the reference temperature. This problem is based on the installation of the temperature sensing part of the reference temperature sensor. It is solved by fixed arrangement such as sticking (spot welding) on the surface of the surface or near the surface. Furthermore, since the electric heater can be heated at 500 ° C. or higher, the contact surface temperature sensor can be calibrated even at a high temperature of 500 ° C. or higher. Moreover, by using an electric heater, a commercially available electric heater can be used, and the structure and temperature control of the calibrator become relatively simple, so that the manufacturing cost of the calibrator can be reduced.

  And the calibration method of the contact-type surface temperature sensor which concerns on this invention for achieving said objective uses the said contact-type surface temperature sensor calibrator in the calibration method of a contact-type surface temperature sensor. Thereby, the calibration of the surface temperature sensor can be performed with high accuracy.

  Further, a calibration method for a reference temperature sensor according to the present invention for achieving the above object is a calibration method for a reference temperature sensor arranged in a contact surface temperature sensor calibrator for calibrating a contact surface temperature sensor. In the contact surface temperature sensor calibrator, a reference temperature sensor is fixedly disposed on a reference block that contacts the temperature sensing portion of the contact surface temperature sensor, and a heating source for heating the reference block to raise the temperature is provided. The reference block is configured to be separable from the heating block, and when the reference temperature sensor is calibrated, the reference block is separated from the contact surface temperature sensor calibrator, and the reference temperature sensor is fixedly disposed. Each reference block is calibrated by placing it in a temperature sensor calibrator separate from the contact surface temperature sensor calibrator. . According to this calibration method, the calibration of the reference temperature sensor of the contact type surface temperature sensor calibrator can be performed easily and accurately.

  As described above, according to the contact-type surface temperature sensor calibrator, the contact-type surface temperature sensor calibration method, and the reference temperature sensor calibration method of the present invention, the temperature sensing unit is brought into contact with the surface of the temperature-measured body. The contact type surface temperature sensor that measures the surface temperature can be calibrated with high accuracy.

It is a perspective view in the state where a reference block was removed showing composition of a contact type surface thermometer sensor calibrator of an embodiment of the invention. It is a perspective view of the state which incorporated the reference | standard block which shows the structure of the contact-type surface thermometer sensor calibrator of FIG. It is a figure which shows the center cross section of the contact-type surface thermometer sensor calibrator of FIG. It is a figure which shows the center longitudinal cross-section of the contact-type surface thermometer sensor calibrator of FIG. It is a top view which shows the mode of calibration of the reference | standard temperature sensor of the contact-type surface thermometer sensor calibrator of FIG. FIG. 6 is a cross-sectional view showing a state of calibration of a reference temperature sensor of the contact-type surface thermometer sensor calibrator of FIG. 5. It is a perspective view which shows the reference | standard block of the contact-type surface thermometer sensor calibrator of FIG. It is a perspective view which shows the reference | standard temperature sensor fixedly arranged by the reference | standard block. It is a perspective view which shows a 1st heat retention block. It is a perspective view which shows a 2nd heat retention block. It is a perspective view which shows a heating block. It is a figure which shows the mode of calibration of the contact-type surface temperature sensor of a prior art.

  Next, a temperature sensor calibrator according to an embodiment of the present invention will be described with reference to the drawings. Note that the dimensions of the drawings are changed so that the configuration can be easily understood, and the ratios of the thicknesses, widths, lengths, and the like of the respective members and parts do not necessarily match the ratios of actually manufactured parts.

  As shown in FIGS. 1 to 4, the contact-type surface temperature sensor calibrator 10 according to the embodiment of the present invention is a contact-type surface temperature sensor calibrator 10 for calibrating the contact-type surface temperature sensor 20. A reference block 11 with which the contact-type surface temperature sensor 20 is brought into contact, a first heat insulation block 12, two second heat insulation blocks 13, 13, a heating block 14, a reference temperature sensor 30 fixedly arranged on the reference block 11, and heating An electric heater (heating source) 17 inserted into the block 14 is included. The reference block 11 is configured to be separable from the heating block 14 provided with an electric heater 17 that is in contact with the reference block 11 and heats the reference block 11 to raise the temperature.

  As shown in FIGS. 7 and 8, the reference block 11 is formed in a rectangular parallelepiped (for example, a width of 14 mm, a length of 35 mm, and a height of 14 mm), and a fixing through hole 11a through which the fixing screw 15 is inserted, and a fixing block The fixing screw hole 11b to which the screw 16 is screwed, the heat sensitive part (thermocouple contact) 31 of the reference temperature sensor 30, and the storage grooves 11e and 11f for storing a part of the lead wire 32 are provided.

  In the reference block 11, the upper side is a reference surface 11 s with which the temperature sensing part 21 of the surface temperature sensor 20 contacts, and the smaller one side surface adjacent to the reference surface 11 s is fixedly disposed. Let it be surface 11c. Also, the large side surfaces adjacent to the reference surface 11s are referred to as heat retaining surfaces 11d and 11d. Further, the lower surface that is the back side of the reference surface 11s is a heated surface that contacts the heating block 14, and the side surface that is the back side of the installation surface 11c is a heat radiating surface.

  The storage grooves 11e and 11f are provided on the three surfaces 11c and 11d adjacent to the reference surface 11s with which the contact-type surface temperature sensor 20 comes into contact. The installation surface 11c is provided with a storage groove 11e for storing the temperature sensing part 31 of the reference temperature sensor 30, but the temperature sensing part 31 of the reference temperature sensor 30 is used as a reference in order to shorten the distance from the reference surface 11s as much as possible. For example, a storage groove 11e which is a groove of about 0.3 mm is provided so that the surface 11s can be disposed near the surface of the surface 11s or the surface of about 0 mm to 5 mm below the surface. The heat retaining surfaces 11d and 11d are provided with a storage groove 11f that stores a part of the lead wire 32 extending from the temperature sensing portion 31, for example, a groove having a depth of about 0.5 mm to 1.0 mm. .

  The reference temperature sensor 30 is formed of a type R thermocouple. This solves the problem that high-temperature measurement of the reference temperature sensor 30 is difficult by making the reference temperature sensor 30 a type R thermocouple capable of measuring up to a high temperature of 500 ° C. or higher for calibration in a high temperature range of 500 ° C. or higher. it can.

  In the reference temperature sensor 30, as shown in FIG. 8, the temperature sensing portion 31 is fixedly disposed in the storage groove 11e of the installation surface 11c, and a part of the lead wire 32 extending from the temperature sensing portion 31 is part of the installation surface 11c. The lead wire 32 is guided to the outside of the calibrator 10 by being stored in the storage groove 11 f of the storage groove 11 e and the heat retaining surface 11 d. The housing grooves 11e and 11f can prevent a gap when the reference block 11 is in contact with the first heat retaining block 12 or the second heat retaining block 13, and maintain good heat conduction between the blocks. Can do.

  According to this configuration, since the temperature sensing portion 31 of the reference temperature sensor 30 is embedded or circumscribed on the installation surface 11c adjacent to the reference surface 11s instead of the reference surface 11s, the contact-type surface temperature sensor 20 is not applied. The reference temperature sensor 30 can be easily fixed and placed with the reference surface 11s in contact with the reference surface 11s in a smooth state. Further, since the reference surface 11s can be maintained in a smooth state, the contact-type surface temperature sensor 20 can be kept in contact with the reference surface 11s while the temperature-sensitive portion 21 of the contact-type surface temperature sensor 20 is in contact with the reference surface 11s in a state closer to the actual measurement state. Calibration can be performed.

  The temperature sensing part 31 of the reference temperature sensor 30 is fixed to the surface of the reference block 11 or near the surface by spot welding, adhesion or the like. The vicinity of the surface is, for example, in the range of 0 mm to 5 mm from the surface of the reference surface 11s. In the case where the temperature sensing part 31 is provided on the surface, after the fixed arrangement, the surface of the reference surface 11s is machined together with the temperature sensing part 31 so that the reference surface 11s and the temperature sensing part 31 are in the same plane. .

  The temperature sensing portion 31 of the reference temperature sensor 30 is arranged on or near the surface of the reference surface 11s, and the distance between the temperature of the reference surface 11s and the temperature measuring point where the temperature sensing portion 31 is fixedly arranged. Is a short distance of 0 mm to 5 mm, so that the surface of the reference surface 11 s and the temperature sensitive part of the reference temperature sensor 30 can be obtained even when the reference block 11 is made of a heat-resistant metal having a lower thermal conductivity than copper. Since the temperature difference from 31 can be reduced, the temperature of the surface of the reference surface 11s can be accurately measured.

  The first heat retaining block 12 is formed in a rectangular parallelepiped (for example, a width of 14 mm, a length of 35 mm, and a height of 14 mm) having the same size as the reference block 11. The first heat retaining block 12 is provided with a fixing through hole 12a through which a fixing screw 15 for connection is inserted, and a fixing screw hole 12b into which the fixing screw 16 is screwed.

  In addition, two second heat insulation blocks 13 are formed in a rectangular parallelepiped size (for example, a width of 13 mm, a length of 70 mm, and a height of 14 mm) in which the reference block 11 and the first heat insulation block 12 are combined. The second heat retaining block 13 is also provided with a fixing through hole 13 a through which the fixing screw 15 is inserted and a fixing through hole 13 b through which the fixing screw 16 is inserted.

  Also, the heating block 14 has a large upper heating surface 14s and electric heating so that the reference block 11, the first heat retaining block 12, and the two second heat retaining blocks 13, 13 can be placed side by side as shown in FIGS. It is formed in a rectangular parallelepiped (for example, a width of 40 mm, a length of 100 mm, and a height of 23 mm) having an electric heater hole 14h into which the heater 17 is inserted and arranged.

  An electric heater 17 is inserted and disposed in the electric heater hole 14h. Since the electric heater 17 can be heated at 500 ° C. or higher, the contact surface temperature sensor 20 can be calibrated even at a high temperature of 500 ° C. or higher. Further, the use of the electric heater 17 makes it possible to use a commercially available electric heater, and the structure and temperature control of the contact surface temperature sensor calibrator 10 are relatively simple. Manufacturing cost can be reduced.

  Each of these blocks 11, 12, 13, and 14 is formed of, for example, INCONEL (registered trademark) 718 that has only heat resistance and high thermal conductivity. This Inconel 718 is a metallic material based on nickel and containing alloy elements such as iron, chromium, niobium, molybdenum, etc., and can maintain its shape even at temperatures of 500 ° C or higher, so temperature sensor calibration for high temperatures up to about 800 ° C. Can be used. In other words, regarding calibration in a high temperature range of 500 ° C. or higher, by making the material of the reference block 11 into Inconel 718 that can be used even at a high temperature of 500 ° C. or higher, the copper reference block in the prior art has insufficient heat resistance. can be solved.

  Since the thermal conductivity of Inconel 718 is as small as about 1/25 of copper, a temperature difference is likely to occur between the surface and the measurement point of the reference temperature, but this problem is caused by the temperature sensing portion 31 of the reference temperature sensor 30. The installation position is solved by a fixed arrangement such as sticking (spot welding) on the surface of the reference surface 11 or in the vicinity of the surface.

  As shown in FIG. 2, the reference block 11 and the first heat retaining block 12 are sandwiched between two second heat retaining blocks 13 and 13. Further, the fixing screw 16 inserted through the fixing through hole 13b of the second heat retaining block 13 and screwed into the fixing screw hole 11b of the reference block 11 and the fixing through hole 13b of the second heat insulating block 13 are inserted. Then, the first heat retaining block 12 is coupled by the fixing screw 16 screwed into the fixing screw hole 12b.

  A fixing screw 15 is inserted into the fixing through holes 11a, 12a, and 13a of the reference block 11, the first heat retaining block 12, and the second heat retaining block 13, and the fixing screw hole 14a of the heating block 14 is fixed. And the blocks 11, 12, 13, 13, and 14 are integrated. By tightening the fixing screw 15, the surfaces of the blocks 11, 12, 13, and 14 are brought into close contact with each other, and the thermal conductivity can be improved by this contact.

  The first heat retaining block 12 is disposed so that the contact surface 12c contacts the installation surface 11c of the reference block 11. The heat retaining surfaces 13d of the second heat retaining block 13 are brought into contact with the heat retaining surfaces 12d, 12d, which are the side surfaces of the first heat retaining block 12, and the heat retaining surfaces 13d, 11d, which are the side surfaces of the reference block 11, are mounted on the heating block 14. Put.

  According to this configuration, since the temperature sensing part 31 and part of the lead wire 32 of the reference temperature sensor 30 are housed in the housing groove 11e provided on at least one of the reference block 11 side and the first heat retaining block 12 side, The temperature sensing section 31 of the temperature sensor 30 can be surrounded by the reference block 11 and the first heat retaining block 12, and the installation surface 11c on the reference block 11 side and the contact surface 12c on the first heat retaining block 12 side are in close contact with each other. Therefore, the heat conduction efficiency between the two can be maintained at a high level.

  Accordingly, the temperature of the reference block 11 and the first heat retaining block 12 can be made uniform, and at the time of calibration, the reference block 11 and the first heat retaining block 12 have a large heat capacity, and the contact surface temperature. The ratio of the amount of heat transfer caused by the contact of the sensor 20 can be reduced with respect to the overall heat capacity of the calibrator. As a result, the amount of change in the surface temperature of the reference surface 11s due to the contact of the contact type surface temperature sensor 20 can be reduced, and the temperature of the temperature sensing part 21 of the contact type surface temperature sensor 20 and the temperature of the reference block 11 can be quickly determined. Since equalization can be achieved, the calibration accuracy can be increased.

  Further, the second heat insulation block is brought into contact with the surfaces 11d and 11d adjacent to the installation surface 11c of the reference block 11 and the surfaces 12d and 12d adjacent to the contact surface 12c facing the installation surface 11c of the first heat insulation block 12. 13 and 13 are arranged, and the reference block 11, the first heat retaining block 12, and the second heat retaining blocks 13 and 13 are mounted on a heating block 14 having a heating source. The heat capacity of the surface temperature sensor calibrator 10 as a whole can be increased, and the first heat retaining block 12, the second heat retaining blocks 13, 13 and the heating block 14 can be brought into surface contact with the reference block 11. The temperature can be raised and lowered quickly, and can be easily maintained at a constant temperature. Therefore, calibration accuracy can be increased. In addition, since the reference block 11 can be downsized while ensuring the heat capacity of the contact surface temperature sensor calibrator 10 as a whole, the calibrator for the reference temperature sensor 30 that accommodates the reference block 11 can be downsized. .

  Although the storage groove 11e is provided in the reference block 11 in this embodiment, it can also be provided in the first heat retaining block 12. In this case, the temperature sensing part 31 of the reference temperature sensor 30 is fixedly arranged outside the reference block 11, and the storage groove provided in the first heat insulation block 12 when the first heat insulation block 12 comes into contact with the installation surface 11 c. Will be stored. Further, the storage grooves 11e may be provided in half each on the reference block 11 side and the first heat retaining block 12 side. Even in these cases, the lead wire 31 is housed in the housing groove 11f portion of the reference block 11 and guided to the outside, and the reference block 11 remains in a state where the reference temperature sensor 30 is fixedly disposed on the reference block 11. Is configured to be removable.

  According to the contact-type surface temperature sensor calibrator 10 having the above-described configuration, the reference temperature sensor 30 is fixedly disposed on the reference block 11 that contacts the temperature sensing unit 21 of the surface temperature sensor 20, and the reference block 11 is heated to rise. Since it is configured to be separable from the heating block 14 having the heating source 17 to be heated, when the reference temperature sensor 30 is fixedly arranged, the reference temperature sensor 30 is inserted into the storage hole or insertion hole of the reference block 11 In comparison with this, the heat conduction efficiency between the reference temperature sensor 30 and the reference block 11 can be remarkably increased, and the surface temperature of the reference block 11 can be accurately measured by the reference temperature sensor 30.

  Moreover, since the reference block 11 can be reduced in size by configuring the reference block 11 so as to be separable from the heating source, the reference block 11 with the reference temperature sensor 30 fixed can be put into another calibrator. As a result, the reference temperature sensor 30 can be easily calibrated.

  And the calibration method of the contact type surface temperature sensor which concerns on this invention is performed using said contact type surface temperature sensor calibrator 10. FIG. That is, the contact surface temperature sensor calibrator 10 is placed in a heat insulating box or the like so that the amount of heat released is small, and the heating block 14, the reference block 11, the first heat insulating block 12, and the second heat insulating block are set by the electric heater 17. 13 and 13 are heated to a calibration temperature and maintained, and the temperature-sensing portion 21 of the contact-type surface temperature sensor 20 is brought into contact with the surface of the reference surface 11s so that the contact-type surface temperature sensor 20 and the reference temperature are brought into contact with each other. Reading the temperature measurement value of the sensor 30 and comparing both temperature measurement values is repeated while changing the temperature of the calibration, so that the temperature of the contact surface temperature sensor 20 becomes the temperature measurement value of the reference temperature sensor 30. Calibrate the measured value. Thereby, the surface temperature sensor 20 can be calibrated with high accuracy.

  Further, the calibration method of the reference temperature sensor according to the present invention is the calibration method of the reference temperature sensor 30 of the contact surface temperature sensor calibrator 10 described above, as shown in FIGS. At this time, the reference block 11 on which the reference temperature sensor 30 is fixedly arranged is put into a temperature sensor calibrator 40 different from the contact surface temperature sensor calibrator 10 for calibration.

  In this temperature sensor calibrator 40, the temperature sensing part 51 of the reference calibration temperature sensor 50 of the reference block 11 and the temperature sensor calibrator 40 is inserted and arranged in a soaking block (constant temperature block) 41, and the soaking is performed. The heat block 41 is put into a heating furnace 42 such as an electric furnace of the temperature sensor calibration 40, and the temperature of the soaking block 41 is mainly heated by the radiant heat transfer H, whereby a reference placed in the soaking block 41 is provided. The temperature sensing unit 31 of the block 11 and the temperature sensing unit 51 of the comparative calibration temperature sensor 50 are heated. Then, at each temperature for calibration, the temperature measurement value of the reference temperature sensor 30 and the temperature measurement value of the comparative calibration temperature sensor 50 are read and compared, and the reference temperature sensor 30 is calibrated by the comparison calibration temperature sensor 50. .

  According to the calibration method of the reference temperature sensor 30, the reference temperature sensor 30 of the contact-type surface temperature sensor calibrator 10 can be easily calibrated.

  According to the contact type surface temperature sensor calibrator, the contact type surface temperature sensor calibration method, and the reference temperature sensor calibration method described above, the contact type that measures the surface temperature by bringing the temperature sensing part into contact with the surface of the temperature object. Since the surface temperature sensor can be calibrated with high accuracy, it can be used as a calibrator and a calibration method for a contact surface temperature sensor.

10, 10X Contact-type surface temperature sensor calibrator 11 Reference block 11c Installation surface 11e, 11f Storage groove 11s Reference surface 12 First heat insulation block 12c Abutting surface 13 Second heat insulation block 14 Heating block 14h Electric heater hole 14s Heating surface 17 Electric heater 20 Contact type surface temperature sensor 21 Temperature sensing unit 30 Reference temperature sensor 31 Temperature sensing unit 32 Lead wire 40 Temperature sensor calibrator 41 Heat equalization block 42 Heating furnace 50 Temperature sensor 51 for comparative calibration 51 Temperature sensing unit H Radiation heat transfer

Claims (5)

A contact surface temperature sensor calibrator for calibrating a contact surface temperature sensor,
What is a heating block in which a reference temperature sensor is fixedly disposed on a reference block that contacts a temperature sensing part of the contact surface temperature sensor, and a heating source that heats the reference block by contacting the reference block and raises the temperature is provided? A contact type surface temperature sensor calibrator, wherein the reference block is configured to be separable.   2. The contact-type surface temperature sensor calibrator according to claim 1, wherein the temperature sensing part of the reference temperature sensor is fixedly disposed on the surface of the reference surface of the reference block or in the vicinity of the surface.   When the temperature sensing part of the reference temperature sensor is fixedly arranged on the reference block, the temperature sensing part of the reference temperature sensor is embedded or circumscribed on the installation surface which is a surface adjacent to the reference surface, and is fixedly arranged. A heat retention block is disposed in contact with the installation surface, and a storage groove is provided on one or both of the installation surface of the reference block and the contact surface of the heat insulation block that contacts the installation surface. The contact-type surface temperature sensor calibrator according to claim 1 or 2, wherein a temperature sensing part of the reference temperature sensor and a part of a lead wire connected to the temperature sensing part are accommodated.   In the calibration method of a contact-type surface temperature sensor, the contact-type surface temperature sensor calibrator of any one of Claims 1-3 is used, The calibration method of the contact-type surface temperature sensor characterized by the above-mentioned. In the calibration method of the reference temperature sensor arranged in the contact surface temperature sensor calibrator for calibrating the contact surface temperature sensor,
In the contact-type surface temperature sensor calibrator, a reference temperature sensor is fixedly disposed on a reference block that contacts the temperature-sensitive portion of the contact-type surface temperature sensor, and a heating source is provided for heating the reference block to raise the temperature. The reference block is configured to be separable from the heating block,
When calibrating the reference temperature sensor, the reference block is separated from the contact-type surface temperature sensor calibrator, and the reference block on which the reference temperature sensor is fixedly arranged is separated from the contact-type surface temperature sensor calibrator. A reference temperature sensor calibration method comprising: calibrating the reference temperature sensor in a temperature sensor calibrator.

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