A Calibration Method for Temperature and Resistance of Cesium Beam Tube Thermistor

A thermistor and calibration method technology, applied in thermometers, thermometer testing/calibration, heat measurement, etc., can solve problems such as insulation difficulties, cesium furnace damage, short circuit, etc., to avoid oxidation and damage, avoid damage, and reduce manufacturing costs Effect

Active Publication Date: 2017-06-13
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] When the thermocouple is drawn from the cesium beam tube to the outside, it is affected by the high-temperature baking process in the cesium beam tube manufacturing process, the thermocouple wire insulation material is limited, the insulation is relatively difficult, and short circuits are prone to occur in the production process, resulting in cesium The beam tube does not work properly;
[0007] The thermocouple is embedded in the cesium furnace by extrusion, which is easy to cause damage to the cesium furnace during installation

Method used

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  • A Calibration Method for Temperature and Resistance of Cesium Beam Tube Thermistor
  • A Calibration Method for Temperature and Resistance of Cesium Beam Tube Thermistor
  • A Calibration Method for Temperature and Resistance of Cesium Beam Tube Thermistor

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Embodiment Construction

[0030] The present invention is further described below:

[0031] like figure 2 As shown, a calibration system includes a digital multimeter 1, a heating belt 8, a support base 9, an air extraction unit 10, a computer 11 and a calibration room 12, the heating belt 8 and the support base 9 are rigidly connected in the calibration room 12, and the heating belt 8 Evenly arranged in the calibration room 12 to ensure the uniformity of heating in the calibration room 12, the support seat 9 is arranged in the middle of the calibration room 12 with the table facing upwards, and is used to place the calibrated cesium beam tube 6, and the calibration room 12 is a closed cavity One end of the calibration room 12 is provided with a sealed door with a fluorine rubber ring, the air extraction unit 10 is connected to the calibration room 12 through a pipeline, and the computer 11 controls the temperature rise and fall operation of the heating belt 8 .

[0032] like image 3 As shown, the ...

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Abstract

The invention provides a calibrating method for temperature and resistance of a cesium beam tube thermistor, which can calibrate the relationship between the temperature and resistance of the thermistor in a vacuum-sealed cesium beam tube. In the present invention, the cesium beam tube is first placed in the vacuum chamber, and after the vacuum chamber is protected by vacuum pumping, the cesium beam tube is heated as a whole, and after being heated to the required temperature, the temperature and the value of the thermistor are recorded. Adjust the temperature and repeat the above steps to obtain the corresponding relationship between the temperature and resistance of the thermistor in the cesium beam tube. Since the invention does not need to install thermocouples, it can eliminate the failure rate of cesium beam tube operation caused by changes in the characteristics of thermocouple insulation, avoid damage to cesium furnaces during the installation of thermocouples, improve the authenticity of calibration data, and can be widely used In the preparation of cesium beam tubes.

Description

technical field [0001] The invention belongs to the field of atomic frequency standards, in particular to a method for calibrating the temperature and resistance of a cesium beam tube thermistor, which is suitable for calibrating the temperature and resistance of the cesium beam tube thermistor. Background technique [0002] Due to the advantages of high temperature measurement accuracy and good reliability of thermistor, it is widely used in cesium beam tubes. After vacuum sealing, it is necessary to re-calibrate the corresponding relationship between the temperature and resistance of the thermistor, but since the cesium beam tube is in a completely sealed state after vacuum sealing, it is difficult to calibrate. [0003] At present, the calibration of cesium beam tube thermistor is as follows: figure 1 The method shown: a thermocouple installation groove is designed on the surface of the cesium furnace, and the thermocouple is extruded and embedded in the installation gro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K15/00
Inventor 成大鹏陈江马寅光王骥黄良育杨军郑宁
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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