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A high-precision thermistor thermometer calibration device

A technology of thermistor and calibration device, which is applied in the direction of thermometer testing/calibration, thermometer, measuring device, etc., can solve problems such as inability to perform calibration, inability to verify fitting accuracy, fitting method without measurement data, etc., and achieve accurate calibration Effect

Active Publication Date: 2018-07-10
SHANGHAI INST OF MEASUREMENT & TESTING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a high-precision thermistor thermometer calibration device, which solves the defect that there is no effective fitting method for measurement data, the fitting accuracy cannot be verified, and the calibration cannot be performed.

Method used

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  • A high-precision thermistor thermometer calibration device
  • A high-precision thermistor thermometer calibration device
  • A high-precision thermistor thermometer calibration device

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0031] As the three major sensors for temperature measurement, thermocouples, thermal resistances, and thermistors, there are few studies on the calibration methods of thermistors.

[0032] The present invention proposes a high-precision thermistor thermometer calibration device, which fills the gap in the research of high-precision thermistor thermometer calibration methods and calibration devices in the range of (0-100) °C in my country, and determines the method for nonlinear fitting of data, and The fitting effect is verified, and the entire calibration process is verified through uncertainty evaluation, which provides a theoretical basis and device implementation for the study of the resistance temperature characteristics and calibration methods of ordinary thermistor thermometers.

[0033] as attached figure 1 As shown, the high-precision the...

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Abstract

The invention relates to a thermistor and belongs to the field of thermistor detection. A high-precision thermistor thermometer calibrating device comprises a high-precision thermistor thermometer to be calibrated, an etalon, a temperature-measuring bridge, and a thermostatic bath and is characterized in that the high-precision thermistor thermometer to be calibrated and the etalon are placed in the thermostatic bath and are connected to the temperature-measuring bridge; the temperature-measuring bridge measures two sets of temperature data and sends to a data fitting system the temperature data to be fitted for calibrating the high-precision thermistor thermometer to be calibrated; the etalon is a standard platinum resistance thermometer; the data fitting system comprises a data importing module, a data fitting module, and a fitting result and error precision calculating and analyzing module; the data fitting module comprises a data fitting algorithm selection submodule connected with a corresponding algorithm submodule. The data nonlinear fitting method of the high-precision thermistor thermometer calibrating device is determined and a fitting result can be verified.

Description

technical field [0001] The invention relates to a thermistor thermometer, in particular to a calibration device for a high-precision thermistor thermometer. Background technique [0002] Since the thermistor was successfully developed in 1940, it has developed very rapidly. Due to its advantages of high sensitivity, small size, simple structure and short response time, it has evolved from a temperature compensation and automatic amplification adjustment device for communication instruments to a Widely used in temperature sensors in various fields such as home appliances, automobiles, and biomedicine. At present, the temperature sensors used for flight tests on domestic and foreign spacecraft mainly use thermistors. A thermistor thermometer is also used in most logarithmic amplifier circuits to compensate for its temperature. [0003] The negative temperature coefficient thermistor is mainly made of metal oxides such as manganese, cobalt, nickel and copper, and is manufactu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00
CPCG01K15/005
Inventor 朱晨彬朱欣赟姚丽芳姜盈盈
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH
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