CN86207227U - Nonlinear error corrector for cold end compensating unit of temp. measuring meter - Google Patents
Nonlinear error corrector for cold end compensating unit of temp. measuring meter Download PDFInfo
- Publication number
- CN86207227U CN86207227U CN 86207227 CN86207227U CN86207227U CN 86207227 U CN86207227 U CN 86207227U CN 86207227 CN86207227 CN 86207227 CN 86207227 U CN86207227 U CN 86207227U CN 86207227 U CN86207227 U CN 86207227U
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- CN
- China
- Prior art keywords
- temperature
- corrector
- rheostat
- regulation
- cold junction
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- Legal status (The legal status 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 status listed.)
- Ceased
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Abstract
Non-linearity exists between thermocouple temperature and thermoelectromotive force and thus the additional error is caused to the direct addition (in particular the analog type temperature measurement/or temperature control meter) of the thermoelectric couple output signal or the output signal of a cold junction compensator. The utility model additionally provides a changeable resistance corrector changing the output electricity level of the compensator according to the working temperature of the meter on a cold junction compensating circuit. The variable resistance can be connected with the circuit of the regulation output voltage of the regulator of the cold junction compensator provided with a temperature measurement bridge and a stabilized D.C. Electric source and can also be connected between the thermo-sensitive resistor of an electric difference temperature meter provided with a thermal resistor of cold junction compensation and a resistor whose one end is connected with an electric source end.
Description
Non-linear owing to existing between electric thermo-couple temperature-thermopower, so this gives junction compensator output signal and the direct addition of thermopair output signal, particularly analog thermometric and/or temperature control instrument cause additional error.
The present invention is for increasing the variable resistance type corrector that a working temperature by instrument changes the compensator output level in cold junction compensation circuit.
(2) ， And regulate the output voltage of stabilized voltage supply (1) with this variable resistor R, as Fig. 1 by the junction compensator of D.C. regulated power supply (1) to its power supply to include a bridge for measuring temperature.Also can be connected between power supply (1) and the electric bridge (2).
For the thermometric potentiometer circuit (3) that has junction compensator with thermistor Rt as Fig. 2, its rheostat R then seals in the resistance R of thermistor Rt and another termination power end (4)
1Between.The power supply other end is (5).
For very little (as the moving-coil type) instrument of display work moment, the predetermined work temperature setting device is arranged, its rheostat R is driven by setting apparatus.
For the more preceding kind of the moment of driving display is (, pie diagram long as electrodynamic type) automatically instrument that big being enough to drives rheostat R, is then driven by its drive unit.
For driving rheostatic product without mechanical hook-up, as be used for XCZ type instrument, install the scale that the direction of turning back is arranged by instrumentation temperature, scale additional on rheostat R, as Fig. 6, the time spent is adjusted to the assigned work temperature.
Additive error when so just having reduced the instrumentation predetermined temperature.
For the product that straight-line motion mechanism is arranged, its flute profile working curved surface (7) promotes rocking bar (9) when flange among Fig. 3 (6) moves along the arrow direction, and the axle of rheostat R is rotated.Flange (6) is if one-sided workplace and do not have part shown in the dot-and-dash line among the figure then has tension spring (11) to hold rocking bar (9).As an example, drive the flange (6) that sliding sleeve (12) are arranged by nut (10) by rotating screw bolt (13).The installation site of rheostat R, its axle can with the direction of motion of flange (6) parallel (as Fig. 3) or vertical.Rocking bar (9) is gone up and the antifriction device can be arranged, as roller (8).
For the product that rotating mechanism is arranged, by driving shaft (14) the drive cam (15) of (may be original for instrument) among Fig. 4, its working curved surface (18) rotates by the axle that rocking bar (16) drives rheostat R.Spring (19) roller (17) effect is the same.
Rheostat R is a direct slide, as the then available and aforementioned similar mechanism of Fig. 5, is workplace (23) promotion of the cam (20) of the heart with axle (25).With XCT type one class instrument is example, and available original screw rod (22) nut (24) drives cam (20).
The shape of the working curved surface of the flange in the said mechanism (6), cam (15) or cam (20), when standardsizing rheostat R, should make the cold junction compensation output characteristics on request, particularly press the slope of cold junction compensation temperature-output voltage curve when its reference temperature (as 20 ℃) and equate with the slope of the temperature-thermoelectrical potential curve of the thermopair of instrument work at present (predetermined or demonstration) temperature, and adjusted thereupon.
Claims (8)
1, a kind of thermometric instrument cold junction compensation non-linear error calibration device is characterized in that making the cold junction compensation output characteristics with rheostat R, obtains adjusting with the instrumentation temperature.
2, by the corrector of claim 1 regulation,, it is characterized in that regulating the output voltage of voltage stabilizer with this rheostat for the junction compensator of voltage stabilizer to the bridge for measuring temperature power supply.
3, by the corrector of claim 1 regulation, very little and the instrument of working temperature setting apparatus is arranged for display work moment, it is characterized in that the rheostat of corrector is driven by setting apparatus.
4, by the corrector of claim 1 regulation, it is characterized in that being enough to drive the automatic instrument of variable resistor R for the display driving moment, then drive variable resistor R by it.
5, by the corrector of claim 1 regulation, it is characterized in that having straight-line motion mechanism, the flange (6) that drives of mechanism rotates rheostat R by rocking bar (9) thus.
6, by the corrector of claim 1 regulation, it is characterized in that having rotating mechanism, mechanism drives cam (15) thus, rotates rheostat R by rocking bar (16).
7, the corrector of stipulating by claim 1, the flange of standardsizing rheostat R (6) working curved surface (7), or the working curved surface (18) of cam (15), or the shape of the working curved surface (23) of cam (20), when standardsizing rheostat R, should make the cold junction compensation output characteristics on request, particularly press the slope of curve of output when its reference temperature and equate with the slope of the temperature-thermoelectrical potential curve of the thermopair of instrument current operating temperature, and adjusted thereupon.
8, by the corrector of claim 1 regulation, very little and do not have the instrument of temperature setting device for display work moment, it is characterized in that having on the variohm scale by the predetermined work temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86207227 CN86207227U (en) | 1986-10-07 | 1986-10-07 | Nonlinear error corrector for cold end compensating unit of temp. measuring meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86207227 CN86207227U (en) | 1986-10-07 | 1986-10-07 | Nonlinear error corrector for cold end compensating unit of temp. measuring meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86207227U true CN86207227U (en) | 1987-07-22 |
Family
ID=4809700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86207227 Ceased CN86207227U (en) | 1986-10-07 | 1986-10-07 | Nonlinear error corrector for cold end compensating unit of temp. measuring meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86207227U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093239A (en) * | 2015-08-21 | 2015-11-25 | 西安空间无线电技术研究所 | Temperature compensation-based system time delay error correction method |
| CN107764433A (en) * | 2016-08-23 | 2018-03-06 | 哈尔滨飞机工业集团有限责任公司 | A kind of Inter-Turbine Temperature watch test device |
-
1986
- 1986-10-07 CN CN 86207227 patent/CN86207227U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093239A (en) * | 2015-08-21 | 2015-11-25 | 西安空间无线电技术研究所 | Temperature compensation-based system time delay error correction method |
| CN105093239B (en) * | 2015-08-21 | 2017-07-28 | 西安空间无线电技术研究所 | A kind of Time Delay of Systems error calibration method based on temperature-compensating |
| CN107764433A (en) * | 2016-08-23 | 2018-03-06 | 哈尔滨飞机工业集团有限责任公司 | A kind of Inter-Turbine Temperature watch test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |
Termination date: 19880203 |
|
| CE01 | Termination of patent right |