WO2011129689A1 - Calibration device for thermometers - Google Patents

Calibration device for thermometers Download PDF

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Publication number
WO2011129689A1
WO2011129689A1 PCT/NL2011/050244 NL2011050244W WO2011129689A1 WO 2011129689 A1 WO2011129689 A1 WO 2011129689A1 NL 2011050244 W NL2011050244 W NL 2011050244W WO 2011129689 A1 WO2011129689 A1 WO 2011129689A1
Authority
WO
WIPO (PCT)
Prior art keywords
block
temperature control
control element
envelope
temperature
Prior art date
Application number
PCT/NL2011/050244
Other languages
French (fr)
Other versions
WO2011129689A4 (en
Inventor
Martin Johan De Groot
Original Assignee
Martin Johan De Groot
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Martin Johan De Groot filed Critical Martin Johan De Groot
Publication of WO2011129689A1 publication Critical patent/WO2011129689A1/en
Publication of WO2011129689A4 publication Critical patent/WO2011129689A4/en

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a device for calibrating at least one thermometer, said device comprising a block made of a thermally conductive material which is provided with several bores on a first side thereof, in which bores at least one calibration thermometer and said at least one thermometer to be calibrated can be placed, at least one temperature control element for heating or cooling the block, as well as control means for controlling the temperature control element.
  • thermometers Such a calibration device for thermometers is known, for example from US patent publication US 2007/0291815 A1 in the name of R.W. Walker et al.
  • Said patent publication discloses a block made of a thermally conductive material, which is provided with a bore in which the thermometer to be calibrated is to be placed.
  • the block is thermally coupled to temperature control elements for bringing the block to a specific temperature for the calibration measurement.
  • a drawback of such a construction is on the one hand the fact that the dimensions of the device are so large that the known calibration device is less suitable for in situ applications, i.e. if thermometers are to be calibrated on site in the very measuring system in which there are being used.
  • the calibration device according to US 2007/0291815 furthermore requires more power, and consequently a more complex temperature control system, for bringing the entire device to the desired calibration temperature and maintaining said temperature. In particular heating the entire calibration device to the calibration temperature requires a very long heating or setting period.
  • the object of the invention is to provide a calibration device as described in the introduction, which not only has smaller dimensions but which also exhibits a better temperature management, so that the calibration device can also be used for in situ applications.
  • the calibration device is to that end characterised in that the device comprises a first envelope, which surrounds the block in a thermally insulating manner, and wherein the block is thermally coupled, via the first side thereof, to the at least one temperature control element.
  • said at least one temperature control element is thermally coupled to the first side via the first envelope so as to thus realise an efficient temperature equalization and consequently a functional temperature calibration.
  • the calibration device is according to the invention characterised in that it comprises a second envelope, which fully surrounds the first envelope in a thermally insulating manner, and which is thermally coupled to said at least one temperature control element.
  • the first and/or the second envelope are concentrically arranged around the block.
  • the calibration device may according to the invention be characterised in that the block is provided with one or more thermocouples for measuring a temperature gradient between the various bores and/or in the longitudinal direction of a bore.
  • the temperature control element is placed in the block from the first side, whilst in another preferred embodiment the temperature control element is placed in the block from a side opposite said first side.
  • the block can be brought to a required calibration temperature in an efficient manner and within a short period of time, in which regard it is noted that the latter embodiment is to be preferred, because a more direct thermal contact between the temperature control element and the block is realised in said latter embodiment, so that bringing the block to the required calibration temperature will take place more quickly when using said embodiment.
  • the temperature control element is a Peltier element optionally provided with an (additional) heating element, or, if used at higher temperatures (higher than the ambient temperature), only a heating element.
  • US-B1 -6, 193,41 1 discloses a calibration device in which the temperature control element is in thermal contact with the entire circumferential surface of the block.
  • Figure 1 shows a first embodiment of a calibration device according to the invention
  • Figure 2 shows a second embodiment of a calibration device according to the invention
  • Figure 3 shows a third embodiment of a calibration device according to the invention.
  • Figures 1-3 show three embodiments of a calibration device according to the invention.
  • the device is indicated at 10, it is made up of a block 11 made of a thermally conductive material, such as copper or stainless steel or aluminium.
  • the block 11 is provided with several bores 12a-12b-etc, in which at least one calibration thermometer and the at least one thermometer to be calibrated can be placed. To ensure that the device will function correctly, the thermometer in question must be fully inserted into the recess or bore 12a-12b-etc.
  • the bores 12a-12b-etc extend from a first side 11a of the block 11 into the block 1 1 , terminating near the other side 11 b of the block.
  • the calibration thermometer may be permanently accommodated in one of the bores, if desired, in particular the bore 12c in figure 2. In this embodiment said bore will be permanently sealed in that case.
  • the permanent calibration thermometer is calibrated prior to use by means of another calibration thermometer, which can be temporarily placed in one of the other bores for the purpose of said calibration.
  • the block is surrounded by a first envelope 20, which is in thermal contact with the block 11 , in particular with the first side 1 1 a of the block 1 1 , near the side or end edge 20a.
  • the envelope 20 further comprises an end face 20b, so that the block 11 is fully surrounded by the envelope 20.
  • the space between the block 1 1 and the envelope 20 is filled with a thermally insulating material, which may consist of a fibre material, for example.
  • the block 11 is in thermal contact with a temperature control element 60 (and optionally 61 ), which is mounted on the end face 20b of the first envelope 20 in the embodiment shown in figure 1.
  • the first envelope 20 is to that end made of a thermally conductive material so as to effect a quick and efficient temperature equalization between the temperature control element and the block 1 1.
  • the device 10 is provided with a second envelope 30, which is likewise arranged around the block 11 and the first envelope 20, in such a manner that it is thermally isolated from the first envelope 20.
  • the space 31 between the first envelope 20 and the second envelope 30 is to that end provided with a thermal insulation material, which may likewise be a fibre material.
  • both envelopes 20 and 30 may be arranged concentrically around the block 1 1 (and the imaginary axis 10' of the device 10).
  • the envelope 30 has an end face 30b, which is in thermal contact or which is thermally coupled to the temperature control element 60.
  • the envelope 30 is furthermore connected to a finishing side 40 near its end edge 30a for sealing the insulated space 31.
  • the finishing side 40 includes a connecting piece 50 provided with bores 50a-50b-etc, which make it possible to insert thermometer to be calibrated and the reference thermometer into the bores 12a-12b-etc.
  • the bores 50a and 50b may be configured as thin-walled tubes, so as to minimise the thermal losses along said tubes.
  • the reference thermometer is preferably a fixed thermometer, i.e. it is permanently mounted in one of the bores 12a-12b-..., which bore does not have a passage via a connecting piece 50, therefore.
  • the calibration device according to the invention exhibits a strongly improved temperature management, since the device as a whole can be brought to the required operating temperature within a very short period of time, which temperature will generally be a temperature near the ambient temperature of the aforesaid temperature-controlled spaces where the calibration device will be placed. Furthermore, this construction makes it possible to bring the calibration device to a required operating temperature within a short period of time, using a temperature control element.
  • the temperature control element 60 Since the temperature control element 60 is placed against an end face 30b of the outer envelope 30 of the device, an efficient temperature exchange with the environment is realised. Moreover, because the temperature control element 60 is also in thermal contact with the end face 20b of the inner envelope 20, a quick and effective temperature equalization can take place with the block 1 1 in which the thermometer to be calibrated is to be placed.
  • the calibration device can be put in working order within a very short period of time, because the required operating temperature is reached in a very short time and because furthermore any temperature changes or fluctuations in time will be quickly equalised.
  • Numerals 90a-90b indicate clamping rings, which can be screwed onto the block 1 1 via a screw thread. By tightening the clamping ring 90a-90b, an inward deformation of the O-rings 91 a-91 b is effected, causing said O-rings to clamp down on a thermometer present in the block 1 1 , thus securing it against displacement.
  • thermocouples 70a-70b may be provided at various locations in the device 10, which thermocouples preferably extend parallel to the block and the bores 12c and 12d formed in the block 1 1 so as to be able to register a temperature gradient across the block.
  • the values of the differential thermocouples that determine the temperature gradient function to make it possible to automatically determine the calibration uncertainty of the device. Said registered values can be used for adjusting the calibration device, for example by actively controlling the temperature control elements 60 to heat or cool the block 1 1.
  • thermocouples 70a-70b The control of the temperature control elements 60 and the reading of the various thermocouples 70a-70b takes place via a signal coupling 80, to which a single signal cable can be connected, which can subsequently be led outside the measuring location (outside the temperature-controlled spaces), to suitable measurement and control equipment disposed outside the measuring location.
  • the signal coupling 80 can optionally also be used for the lead- through and connection of the reference thermometer that is mounted in the block.
  • the temperature control element 60 is placed against the first side 11a of the block 1 1 and the finishing side 40.
  • This embodiment constitutes a more efficient calibration device in comparison with the embodiment shown in figure 1 , because the temperature control element 60 is in direct thermal contact with the block 1 1 , so that a quicker (in time) and more efficient temperature adjustment of the overall device 10 is realised. Accordingly, the signal coupling 80 for connecting the calibration device to the peripheral equipment disposed outside the measuring environment is provided on the other side, more in particular in the end face 30b of the outer envelope 30.
  • a quicker and more efficient temperature adjustment can be realised in particular by the optional use of a heating element 61 provided around the block 11 (embodiment of figure 3).
  • the heating element 61 can also be used in the embodiments shown in figures 1 and 2, in which case the heating element is mounted around the first envelope 20.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

The invention relates to a device for calibrating at least one thermometer, said device comprising a block made of a thermally conductive material which is provided with several bores on a first side thereof, in which bores at least one calibration thermometer and said at least one thermometer to be calibrated can be placed, at least one temperature control element for heating or cooling the block, as well as control means for controlling the temperature control element. According to the invention, the calibration device is to that end characterised in that the device comprises a first envelope, which surrounds the block in a thermally insulating manner, and wherein the block is thermally coupled, via the first side thereof, with the at least one temperature control element.

Description

Calibration device for thermometers.
DESCRIPTION
The invention relates to a device for calibrating at least one thermometer, said device comprising a block made of a thermally conductive material which is provided with several bores on a first side thereof, in which bores at least one calibration thermometer and said at least one thermometer to be calibrated can be placed, at least one temperature control element for heating or cooling the block, as well as control means for controlling the temperature control element.
Such a calibration device for thermometers is known, for example from US patent publication US 2007/0291815 A1 in the name of R.W. Walker et al. Said patent publication discloses a block made of a thermally conductive material, which is provided with a bore in which the thermometer to be calibrated is to be placed. The block is thermally coupled to temperature control elements for bringing the block to a specific temperature for the calibration measurement.
A drawback of such a construction is on the one hand the fact that the dimensions of the device are so large that the known calibration device is less suitable for in situ applications, i.e. if thermometers are to be calibrated on site in the very measuring system in which there are being used. Because of its construction, the calibration device according to US 2007/0291815 furthermore requires more power, and consequently a more complex temperature control system, for bringing the entire device to the desired calibration temperature and maintaining said temperature. In particular heating the entire calibration device to the calibration temperature requires a very long heating or setting period.
The object of the invention is to provide a calibration device as described in the introduction, which not only has smaller dimensions but which also exhibits a better temperature management, so that the calibration device can also be used for in situ applications.
According to the invention, the calibration device is to that end characterised in that the device comprises a first envelope, which surrounds the block in a thermally insulating manner, and wherein the block is thermally coupled, via the first side thereof, to the at least one temperature control element. This makes it possible to realise a calibration device having significantly smaller constructional dimensions, and furthermore to realise a more efficient temperature management, so that long heating or cooling periods are no longer necessary.
More specificaily, said at least one temperature control element is thermally coupled to the first side via the first envelope so as to thus realise an efficient temperature equalization and consequently a functional temperature calibration.
According to another improved embodiment, the calibration device is according to the invention characterised in that it comprises a second envelope, which fully surrounds the first envelope in a thermally insulating manner, and which is thermally coupled to said at least one temperature control element. This makes it possible to realise an improved temperature control, in particular in situations in which the calibration device is used in situ, thus enabling the calibration device to quickly assume the ambient temperature.
According to another advantageous embodiment, the first and/or the second envelope are concentrically arranged around the block.
In order to realize an efficient temperature control of the calibration device according to the invention, the calibration device may according to the invention be characterised in that the block is provided with one or more thermocouples for measuring a temperature gradient between the various bores and/or in the longitudinal direction of a bore.
According to a first preferred embodiment, the temperature control element is placed in the block from the first side, whilst in another preferred embodiment the temperature control element is placed in the block from a side opposite said first side. In both embodiments the block can be brought to a required calibration temperature in an efficient manner and within a short period of time, in which regard it is noted that the latter embodiment is to be preferred, because a more direct thermal contact between the temperature control element and the block is realised in said latter embodiment, so that bringing the block to the required calibration temperature will take place more quickly when using said embodiment.
According to another embodiment of the invention, the temperature control element is a Peltier element optionally provided with an (additional) heating element, or, if used at higher temperatures (higher than the ambient temperature), only a heating element.
It is noted that US-B1 -6, 193,41 1 discloses a calibration device in which the temperature control element is in thermal contact with the entire circumferential surface of the block.
The invention will now be explained in more detail with reference to the drawing, in which:
Figure 1 shows a first embodiment of a calibration device according to the invention;
Figure 2 shows a second embodiment of a calibration device according to the invention;
Figure 3 shows a third embodiment of a calibration device according to the invention.
For a better understanding of the invention, like parts shown in the various figures will be indicated by identical numerals in the description of the figures below.
Figures 1-3 show three embodiments of a calibration device according to the invention.
The device is indicated at 10, it is made up of a block 11 made of a thermally conductive material, such as copper or stainless steel or aluminium. The block 11 is provided with several bores 12a-12b-etc, in which at least one calibration thermometer and the at least one thermometer to be calibrated can be placed. To ensure that the device will function correctly, the thermometer in question must be fully inserted into the recess or bore 12a-12b-etc. The bores 12a-12b-etc extend from a first side 11a of the block 11 into the block 1 1 , terminating near the other side 11 b of the block.
The calibration thermometer may be permanently accommodated in one of the bores, if desired, in particular the bore 12c in figure 2. In this embodiment said bore will be permanently sealed in that case. The permanent calibration thermometer is calibrated prior to use by means of another calibration thermometer, which can be temporarily placed in one of the other bores for the purpose of said calibration.
According to the invention, the block is surrounded by a first envelope 20, which is in thermal contact with the block 11 , in particular with the first side 1 1 a of the block 1 1 , near the side or end edge 20a. The envelope 20 further comprises an end face 20b, so that the block 11 is fully surrounded by the envelope 20. Preferably, the space between the block 1 1 and the envelope 20 is filled with a thermally insulating material, which may consist of a fibre material, for example.
Via the envelope 20, the block 11 is in thermal contact with a temperature control element 60 (and optionally 61 ), which is mounted on the end face 20b of the first envelope 20 in the embodiment shown in figure 1. The first envelope 20 is to that end made of a thermally conductive material so as to effect a quick and efficient temperature equalization between the temperature control element and the block 1 1.
As is clearly shown in figures 1 and 2, the device 10 is provided with a second envelope 30, which is likewise arranged around the block 11 and the first envelope 20, in such a manner that it is thermally isolated from the first envelope 20. The space 31 between the first envelope 20 and the second envelope 30 is to that end provided with a thermal insulation material, which may likewise be a fibre material.
In a preferred embodiment, both envelopes 20 and 30 may be arranged concentrically around the block 1 1 (and the imaginary axis 10' of the device 10).
The envelope 30 has an end face 30b, which is in thermal contact or which is thermally coupled to the temperature control element 60. The envelope 30 is furthermore connected to a finishing side 40 near its end edge 30a for sealing the insulated space 31. The finishing side 40 includes a connecting piece 50 provided with bores 50a-50b-etc, which make it possible to insert thermometer to be calibrated and the reference thermometer into the bores 12a-12b-etc. The bores 50a and 50b may be configured as thin-walled tubes, so as to minimise the thermal losses along said tubes.
The reference thermometer is preferably a fixed thermometer, i.e. it is permanently mounted in one of the bores 12a-12b-..., which bore does not have a passage via a connecting piece 50, therefore.
By using this construction, a calibration device having significantly reduced overall dimensions is obtained, which makes it possible to place the device as a whole in temperature-controlled spaces, such as cold stores, freezers, refrigerators, autoclaves, ovens, incubators and fermentors. Because of this construction, the calibration device according to the invention exhibits a strongly improved temperature management, since the device as a whole can be brought to the required operating temperature within a very short period of time, which temperature will generally be a temperature near the ambient temperature of the aforesaid temperature-controlled spaces where the calibration device will be placed. Furthermore, this construction makes it possible to bring the calibration device to a required operating temperature within a short period of time, using a temperature control element.
Since the temperature control element 60 is placed against an end face 30b of the outer envelope 30 of the device, an efficient temperature exchange with the environment is realised. Moreover, because the temperature control element 60 is also in thermal contact with the end face 20b of the inner envelope 20, a quick and effective temperature equalization can take place with the block 1 1 in which the thermometer to be calibrated is to be placed.
Thus, the calibration device can be put in working order within a very short period of time, because the required operating temperature is reached in a very short time and because furthermore any temperature changes or fluctuations in time will be quickly equalised.
Numerals 90a-90b indicate clamping rings, which can be screwed onto the block 1 1 via a screw thread. By tightening the clamping ring 90a-90b, an inward deformation of the O-rings 91 a-91 b is effected, causing said O-rings to clamp down on a thermometer present in the block 1 1 , thus securing it against displacement.
In order to realise an adequate control of the device, thermocouples 70a-70b may be provided at various locations in the device 10, which thermocouples preferably extend parallel to the block and the bores 12c and 12d formed in the block 1 1 so as to be able to register a temperature gradient across the block. The values of the differential thermocouples that determine the temperature gradient function to make it possible to automatically determine the calibration uncertainty of the device. Said registered values can be used for adjusting the calibration device, for example by actively controlling the temperature control elements 60 to heat or cool the block 1 1. The control of the temperature control elements 60 and the reading of the various thermocouples 70a-70b takes place via a signal coupling 80, to which a single signal cable can be connected, which can subsequently be led outside the measuring location (outside the temperature-controlled spaces), to suitable measurement and control equipment disposed outside the measuring location.
The signal coupling 80 can optionally also be used for the lead- through and connection of the reference thermometer that is mounted in the block.
This, too, helps to prevent unnecessary interference of the measuring environment, because only the calibration device 10 needs to be placed in the measuring environment in question and all further peripheral equipment in is disposed outside said measuring environment, so that it will not interfere with the measuring environment, in particular with the measuring temperature prevailing therein (or the calibration temperature). The extent of said interference is minimised in particular by keeping the power consumption of the system low.
In the embodiment shown in figure 2, the temperature control element 60 is placed against the first side 11a of the block 1 1 and the finishing side 40.
This embodiment constitutes a more efficient calibration device in comparison with the embodiment shown in figure 1 , because the temperature control element 60 is in direct thermal contact with the block 1 1 , so that a quicker (in time) and more efficient temperature adjustment of the overall device 10 is realised. Accordingly, the signal coupling 80 for connecting the calibration device to the peripheral equipment disposed outside the measuring environment is provided on the other side, more in particular in the end face 30b of the outer envelope 30.
A quicker and more efficient temperature adjustment can be realised in particular by the optional use of a heating element 61 provided around the block 11 (embodiment of figure 3). The heating element 61 can also be used in the embodiments shown in figures 1 and 2, in which case the heating element is mounted around the first envelope 20.

Claims

1. A device for calibrating at least one thermometer, said device comprising
- a block made of a thermally conductive material which is provided with several bores on a first side thereof, in which bores at least one calibration thermometer and said at least one thermometer to be calibrated can be placed,
at least one temperature control element for heating or cooling the block, as well as
- control means for controlling the temperature control element, characterised in that the device comprises a first envelope, which surrounds the block in a thermally insulating manner, and wherein the block is thermally coupled, via the first side thereof, with the at least one temperature control element.
2. A device according to claim 1 , characterised in that said at least one temperature control element is thermally coupled to the first side via the first envelope.
3. A device according to claim 1 , characterised in that the device comprises a second envelope, which surrounds the first envelope in a thermally insulating manner and which is thermally coupled to said at least one temperature control element.
4. A device according to claim 1, 2 or 3, characterised in that the first and/or the second envelope are concentrically arranged around the block.
5. A device according to one or more of the preceding claims, characterised in that the block is provided with one or more thermocouples for measuring a temperature gradient between the various bores and/or in the longitudinal direction of a bore.
6. A device according to one or more of the preceding claims, characterised in that the temperature control element is provided near the first side of the block.
7. A device according to one or more of the preceding claims, characterised in that the temperature control element is provided at a side of the block opposite said first side.
8. A device according to one or more of the preceding claims. characterised in that the temperature control element is a Peltier element or a heating element.
PCT/NL2011/050244 2010-04-12 2011-04-12 Calibration device for thermometers WO2011129689A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1037881A NL1037881C2 (en) 2010-04-12 2010-04-12 CALIBRATION DEVICE FOR THERMOMETERS.
NL1037881 2010-04-12

Publications (2)

Publication Number Publication Date
WO2011129689A1 true WO2011129689A1 (en) 2011-10-20
WO2011129689A4 WO2011129689A4 (en) 2011-12-22

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PCT/NL2011/050244 WO2011129689A1 (en) 2010-04-12 2011-04-12 Calibration device for thermometers

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WO (1) WO2011129689A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013185367A1 (en) * 2012-06-13 2013-12-19 深圳市理邦精密仪器股份有限公司 Self-calibration temperature control device and method
ES2428403R1 (en) * 2012-01-27 2014-02-04 Amipem Consultores, S.L. System and procedure for on-site verification of temperature measurement elements in refrigeration room temperature control equipment.
CN103913257A (en) * 2014-04-18 2014-07-09 浙江泰索科技有限公司 Fixed pipe type calibration furnace capable of correcting thermal field difference
EP3296710A1 (en) * 2016-09-19 2018-03-21 SIKA Dr.Siebert & Kühn GmbH & Co. KG. draw
US10937294B2 (en) 2018-01-15 2021-03-02 Kidde Technologies, Inc. Chamberless air quality monitors with temperature sensing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8500802A (en) * 1985-03-19 1986-10-16 Cornelis Vader Calibration appts. for electro-thermal temp. sensors - uses aluminium block heated by high and electrical elements for trimming
US6193411B1 (en) 1999-02-25 2001-02-27 Industrial Technology Research Institute Calibrator for contact and non-contact thermometer
US20070291815A1 (en) 2006-06-14 2007-12-20 Walker Richard W Temperature calibration device driving heating/cooling modules in a manner to allow operation over wide temperature range
US20070291814A1 (en) * 2006-06-14 2007-12-20 Fluke Corporation Insert and/or calibrator block formed of aluminum-bronze alloy, temperature calibration device using same, and methods of use

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8500802A (en) * 1985-03-19 1986-10-16 Cornelis Vader Calibration appts. for electro-thermal temp. sensors - uses aluminium block heated by high and electrical elements for trimming
US6193411B1 (en) 1999-02-25 2001-02-27 Industrial Technology Research Institute Calibrator for contact and non-contact thermometer
US20070291815A1 (en) 2006-06-14 2007-12-20 Walker Richard W Temperature calibration device driving heating/cooling modules in a manner to allow operation over wide temperature range
US20070291814A1 (en) * 2006-06-14 2007-12-20 Fluke Corporation Insert and/or calibrator block formed of aluminum-bronze alloy, temperature calibration device using same, and methods of use

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2428403R1 (en) * 2012-01-27 2014-02-04 Amipem Consultores, S.L. System and procedure for on-site verification of temperature measurement elements in refrigeration room temperature control equipment.
WO2013185367A1 (en) * 2012-06-13 2013-12-19 深圳市理邦精密仪器股份有限公司 Self-calibration temperature control device and method
CN103913257A (en) * 2014-04-18 2014-07-09 浙江泰索科技有限公司 Fixed pipe type calibration furnace capable of correcting thermal field difference
EP3296710A1 (en) * 2016-09-19 2018-03-21 SIKA Dr.Siebert & Kühn GmbH & Co. KG. draw
JP2018048999A (en) * 2016-09-19 2018-03-29 シーカ ドクター シーベルト アンド キューン ゲーエムベーハー アンド コーポレイテッド カーゲー Block calibrator for calibrating temperature sensors
US10564052B2 (en) 2016-09-19 2020-02-18 SIKA Dr. Siebert & Kühn GmbH & Co. KG Block calibrator for calibrating a temperature sensor
US10937294B2 (en) 2018-01-15 2021-03-02 Kidde Technologies, Inc. Chamberless air quality monitors with temperature sensing
EP3511914B1 (en) * 2018-01-15 2023-05-10 Kidde Technologies, Inc. Chamberless air quality monitors with temperature sensing

Also Published As

Publication number Publication date
WO2011129689A4 (en) 2011-12-22
NL1037881C2 (en) 2011-10-17

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