CN203479427U - Multichannel temperature inspection instrument calibrating device - Google Patents
Multichannel temperature inspection instrument calibrating device Download PDFInfo
- Publication number
- CN203479427U CN203479427U CN201320612593.8U CN201320612593U CN203479427U CN 203479427 U CN203479427 U CN 203479427U CN 201320612593 U CN201320612593 U CN 201320612593U CN 203479427 U CN203479427 U CN 203479427U
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- Prior art keywords
- temperature
- instrument
- multichannel
- calibration
- logging
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Abstract
The utility model discloses a multichannel temperature inspection instrument calibrating device and a calibrating method thereof. The multichannel temperature inspection instrument calibrating device comprises a signal inspecting instrument (2). A temperature input end of the signal inspecting instrument (2) is connected with a calibrating temperature measuring probe (4) through a lead. The calibrating temperature measuring probe (4) is arranged at one side of an inner temperature measuring probe (3) of a calibrated multichannel temperature inspecting instrument (1). The calibrated multichannel temperature inspecting instrument (1) is connected with the signal inspecting instrument (2) through a lead. The multichannel temperature inspection instrument calibrating device settles the following problems in calibration of the prior-art multichannel temperature inspection instrument: continuous display number increase of the calibrated instrument, low temperature calibration accuracy of the multichannel temperature inspection instrument, etc. caused by continuous temperature increase of the inner temperature measuring probe along with operation time increase because of heat generated by inner components of the instrument in operation of the calibrated instrument.
Description
Technical field
The utility model belongs to temperature polling instrument collimation technique field, relates in particular to a kind of multichannel temperature logging calibrating installation.
Background technology
Temperature polling instrument is industrial for measuring one of important instrument of temperature, especially multichannel temperature logging measures owing to having that passage is many, intuitive display, practical, reliability is high and accuracy of measurement high, be widely used the temperature test in various temperature device such as various temperature test chambers, heat-treatment furnaces, so, the calibration steps of multichannel temperature logging is also had great importance, multichannel temperature logging is by measuring the voltage signal of thermopair and the temperature of multichannel temperature logging self reference edge, to learn the temperature of thermocouple measurement end while measuring thermopair, the temperature of reference edge records by the inner temperature probe of multichannel temperature logging, because temperature probe is arranged on instrument internal, when carrying out the calibration of multichannel temperature logging, instrument internal components and parts can generate heat owing to being moved by school instrument, cause inner temperature probe constantly to raise with the growth of working time, make by school instrument indication value, constantly to be raise in calibration process, finally make the temperature correction accuracy of multichannel temperature logging constantly decline.
Summary of the invention
The technical problems to be solved in the utility model: a kind of multichannel temperature logging calibrating installation is provided, when solving the calibration of prior art multichannel temperature logging, instrument internal components and parts can generate heat owing to being moved by school instrument, cause inner temperature probe constantly to raise with the growth of working time, make by school instrument indication value, constantly to be raise in calibration process, the problem such as multichannel temperature logging temperature correction accuracy is low.
Technical solutions of the utility model:
A kind of multichannel temperature logging calibrating installation, it comprises signal checking instrument, the temperature input end of signal checking instrument is connected with calibration temperature probe wire, calibration temperature probe is positioned at by a side of the inside temperature probe of school multichannel temperature logging (1), by school multichannel temperature logging, is connected with signal checking instrument wire.
Calibration temperature probe is AA level platinum resistance thermometer sensor.
Calibration temperature probe is positioned at by the left side of the inside temperature probe of school multichannel temperature logging or right side and closely places.
The beneficial effects of the utility model:
The utility model is simple in structure, method of operating is easy, relative prior art calibration method, the utility model can significantly improve by the calibration accuracy of school multichannel temperature logging, while having solved the calibration that has technology multichannel temperature logging, instrument internal components and parts can generate heat owing to being moved by school instrument, cause inner temperature probe constantly to raise with the growth of working time, make by school instrument indication value, constantly to be raise in calibration process, the problem such as the temperature correction accuracy of multichannel temperature logging is low.Adopt the utility model and prior art contrast, temperature correction accuracy has at least improved 1.0 ℃.Because the utility model is that process in calibration reference end temperature error is an of short duration process, continue calibration, so the heating of instrument internal components and parts is very little to the variable effect of reference junction temperature, improved the accuracy of calibration multichannel temperature logging.
accompanying drawing explanation:
Fig. 1 is the utility model structural representation.
embodiment:
A kind of multichannel temperature logging calibrating installation, it comprises signal checking instrument 2, the temperature input end of signal checking instrument 2 is connected with calibration temperature probe 4 wires, calibration temperature probe 4 is positioned at by a side of the inside temperature probe 3 of school multichannel temperature logging 1, by school multichannel temperature logging 1, be connected preferable mask data line 6 with signal checking instrument 2 wires.
What calibrate temperature probe (4) is AA level platinum resistance thermometer sensor.
A calibration steps for multichannel temperature logging, it comprises the steps:
Step 1, calibration temperature probe 4 is placed on to a side of inner temperature probe 3, the signal output part of calibration temperature probe 4 is connected to the temperature input end of signal checking instrument 2;
Step 7, signal checking instrument 2, to by the certain voltage V of school multichannel temperature logging 1 output, read by the temperature displayed value t showing on school multichannel temperature logging 1
show 2 ;
Step 8, look into thermocouple indexing table and draw t
show 2corresponding thermoelectrical potential U
show 2with thermoelectrical potential U corresponding to the corresponding calibration point temperature t of voltage V
t;
Step 9, signal verification instrument 2 to by school multichannel temperature logging 1 by thermoelectrical potential U corresponding to school passage 5 input calibration point temperature t
twith thermoelectrical potential U
show 2difference, read by school multichannel temperature logging 1 by the reading t of school passage 5
show, calculate the temperature error of indication of corresponding calibration point
=t
show-t;
Step 10, pass through formula
calculate the total error △ t of calibration point temperature t, wherein:
-reference junction temperature the error of indication; Unit ℃;
the corresponding partial heat electromotive force of-calibration point temperature; The mV/ ℃ of unit.
Wherein
,
two numerical value can by look into and draw.
Described in step 5 by the reference junction temperature error of indication of school multichannel temperature logging 1
computing formula is
=t
show 1-t
1.
Calibrate other calibration point temperature, the corresponding thermoelectrical potential of this calibration point temperature can be found, then by changing signal checking instrument 2 to being realized by school multichannel temperature logging 1 input thermoelectrical potential, calibrate other passages, by revising channel wiring, repetition above-mentioned steps realizes, and finally completes the calibration of multichannel temperature logging temperature error.
Claims (3)
1. a multichannel temperature logging calibrating installation, it comprises signal checking instrument (2), it is characterized in that: the temperature input end of signal checking instrument (2) is connected with calibration temperature probe (4) wire, calibration temperature probe (4) is positioned at by a side of the inside temperature probe (3) of school multichannel temperature logging (1), by school multichannel temperature logging (1), is connected with signal checking instrument (2) wire.
2. a kind of multichannel temperature logging calibrating installation according to claim 1, is characterized in that: calibration temperature probe (4) is AA level platinum resistance thermometer sensor.
3. a kind of multichannel temperature logging calibrating installation according to claim 1, is characterized in that: calibration temperature probe (4) is positioned at by the left side of the inside temperature probe (3) of school multichannel temperature logging (1) or right side and closely places.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612593.8U CN203479427U (en) | 2013-09-30 | 2013-09-30 | Multichannel temperature inspection instrument calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612593.8U CN203479427U (en) | 2013-09-30 | 2013-09-30 | Multichannel temperature inspection instrument calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203479427U true CN203479427U (en) | 2014-03-12 |
Family
ID=50227740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320612593.8U Withdrawn - After Issue CN203479427U (en) | 2013-09-30 | 2013-09-30 | Multichannel temperature inspection instrument calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203479427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487170A (en) * | 2013-09-30 | 2014-01-01 | 贵州航天计量测试技术研究所 | Device and method for calibrating multi-channel temperature inspecting instrument |
-
2013
- 2013-09-30 CN CN201320612593.8U patent/CN203479427U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487170A (en) * | 2013-09-30 | 2014-01-01 | 贵州航天计量测试技术研究所 | Device and method for calibrating multi-channel temperature inspecting instrument |
| CN103487170B (en) * | 2013-09-30 | 2015-10-21 | 贵州航天计量测试技术研究所 | A kind of multichannel temperature logging calibrating installation and calibration steps thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151021 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151021 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |