CN102519618A - High-precision temperature difference measuring method based on thermoelectric couple - Google Patents
High-precision temperature difference measuring method based on thermoelectric couple Download PDFInfo
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- CN102519618A CN102519618A CN2011103958377A CN201110395837A CN102519618A CN 102519618 A CN102519618 A CN 102519618A CN 2011103958377 A CN2011103958377 A CN 2011103958377A CN 201110395837 A CN201110395837 A CN 201110395837A CN 102519618 A CN102519618 A CN 102519618A
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- temperature difference
- measuring method
- thermoelectric couple
- method based
- thermopair
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Abstract
The invention provides a high-precision temperature difference measuring method based on a thermoelectric couple, which is characterized by comprising the following steps: directly putting the hot end of the thermoelectric couple at the hot flow end of an object to be measured in temperature difference; directly putting the cold end of the thermoelectric couple at the cold flow end of the object to be measured in temperature difference; and finally, directly measuring the temperature difference by using a temperature difference millivolt voltmeter. The invention provides a novel method and a novel device for measuring the temperature difference, which solve the problems that the precision is low and the measuring process is complicated by adopting a traditional temperature difference measuring method, whereas, the disadvantage of the traditional temperature difference measuring method are also completely avoided by the novel temperature difference measuring method based on the thermoelectric couple, thereby, the requirements of sensors required by the society at present are met.
Description
Technical field
The present invention relates to the novel differential temperature survey method of a kind of high precision based on thermopair.
Background technology
Along with developing rapidly of measuring technology, also more and more stricter to the requirement of test data error.Yet these errors mainly are that particularly in the process of thermometric difference, the influence of a plurality of sensor errors accumulative total is bigger, so people require also just increasingly high to sensor accuracy by the decision of the precision of sensor.
Traditional measurement temperature difference need be measured simultaneously through a plurality of probes and subtract each other completion, and during thermometric, this is cumbersome, and a plurality of probe deviation accumulation is inaccurate at the scene.So far, also there are not a kind of not only convenient but also the high differential temperature survey device and method of precision.
Summary of the invention
The purpose of this invention is to provide a kind of high-precision differential temperature survey method.
In order to achieve the above object; A kind of technical scheme of the present invention has provided a kind of high precision differential temperature survey method based on thermopair; It is characterized in that step is: the hot junction of thermopair is directly placed the hot-fluid end of the object of pending differential temperature survey, the cold junction of thermopair is directly placed the cold flow end of the object of pending differential temperature survey; At last, directly measure the temperature difference with temperature difference millivolt voltage table.
The present invention can directly measure the temperature difference of cold and hot end according to the measuring principle of thermopair, has avoided the deviation accumulation that in traditional differential temperature survey, uses a plurality of sensors to occur.
It is low that a kind of novel thermometric difference method provided by the invention and device have overcome traditional differential temperature survey method precision, the characteristics that test process is loaded down with trivial details.And this New-type thermocouple thermometric difference method has also been avoided the shortcoming of traditional differential temperature survey method fully, has satisfied the requirement of the sensor of present social demand.
Description of drawings
Fig. 1 is the test philosophy figure of a kind of high precision differential temperature survey method based on thermopair provided by the invention.
Embodiment
For making the present invention more obviously understandable, now with a preferred embodiment, and conjunction with figs. elaborates as follows.
As shown in Figure 1; A kind of high precision differential temperature survey method provided by the invention based on thermopair; Step is: the hot-fluid end that the hot junction of thermopair is directly placed the refrigeratory of pending differential temperature survey; The cold junction of thermopair is directly placed the cold flow end of the refrigeratory of pending differential temperature survey, last, directly measure the temperature difference with temperature difference millivolt voltage table.
The present invention can directly measure the temperature difference of cold and hot end according to the measuring principle of thermopair, and operation is very easy, measuring accuracy high.
Claims (1)
1. high precision differential temperature survey method based on thermopair; It is characterized in that; Step is: the hot-fluid end that the hot junction of thermopair is directly placed the object of pending differential temperature survey; The cold junction of thermopair is directly placed the cold flow end of the object of pending differential temperature survey, last, directly measure the temperature difference with temperature difference millivolt voltage table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103958377A CN102519618A (en) | 2011-12-04 | 2011-12-04 | High-precision temperature difference measuring method based on thermoelectric couple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011103958377A CN102519618A (en) | 2011-12-04 | 2011-12-04 | High-precision temperature difference measuring method based on thermoelectric couple |
Publications (1)
| Publication Number | Publication Date |
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| CN102519618A true CN102519618A (en) | 2012-06-27 |
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| CN2011103958377A Pending CN102519618A (en) | 2011-12-04 | 2011-12-04 | High-precision temperature difference measuring method based on thermoelectric couple |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277589A (en) * | 2015-09-14 | 2016-01-27 | 河海大学 | Crop water deficiency detection device based on thermocouple monitoring of leaf temperature increase and detection method |
| CN107202646A (en) * | 2016-12-14 | 2017-09-26 | 北京无线电计量测试研究所 | A kind of temp difference measurer for microwave black-body surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030320U (en) * | 1988-04-30 | 1989-01-04 | 林洪达 | Electronic admeasuring instrument for temperature and temp. diffential |
| US20020037238A1 (en) * | 2000-07-01 | 2002-03-28 | Hans-Peter Haar | Test element analysis system |
| US20100118913A1 (en) * | 2007-05-03 | 2010-05-13 | Renishaw Plc | Method and apparatus for rapid temperature measurement |
| CN102095507A (en) * | 2010-12-21 | 2011-06-15 | 浙江大学 | Method for measuring smaller cooling liquid temperature difference in thermal balance of internal combustion engine by jointed thermocouples |
-
2011
- 2011-12-04 CN CN2011103958377A patent/CN102519618A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2030320U (en) * | 1988-04-30 | 1989-01-04 | 林洪达 | Electronic admeasuring instrument for temperature and temp. diffential |
| US20020037238A1 (en) * | 2000-07-01 | 2002-03-28 | Hans-Peter Haar | Test element analysis system |
| US20100118913A1 (en) * | 2007-05-03 | 2010-05-13 | Renishaw Plc | Method and apparatus for rapid temperature measurement |
| CN102095507A (en) * | 2010-12-21 | 2011-06-15 | 浙江大学 | Method for measuring smaller cooling liquid temperature difference in thermal balance of internal combustion engine by jointed thermocouples |
Non-Patent Citations (1)
| Title |
|---|
| 张世湘: "《热电偶及其应用》", 31 July 1959, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277589A (en) * | 2015-09-14 | 2016-01-27 | 河海大学 | Crop water deficiency detection device based on thermocouple monitoring of leaf temperature increase and detection method |
| CN107202646A (en) * | 2016-12-14 | 2017-09-26 | 北京无线电计量测试研究所 | A kind of temp difference measurer for microwave black-body surface |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120627 |