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Rapid model discrimination method for platinum or platinum-rhodium thermocouple wire

A thermocouple wire and platinum-rhodium technology, which is applied in the field of rapid identification of platinum and platinum-rhodium thermocouple wire models, can solve problems such as high cost, long cycle, and inapplicability, and achieve easy operation, avoid pollution problems, and accurate and reliable detection results Effect

Inactive Publication Date: 2019-08-20
英特派铂业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is high cost, long period, and not applicable when the equivalent is small

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Turn on the digital multimeter with a DC voltage scale division value of 0.001mV, place it in the DC voltage range, select the multimeter accessory as a pair of red and black connecting wires with hooks, and insert it into the corresponding socket for voltage measurement of the multimeter; prepare It is well known that the poles of platinum and platinum-rhodium thermocouple wires of types S, R, and B that have passed the inspection according to GB / T1598 are used as reference materials, and the electric annealing is completed according to the regulations of GB / T1598; the thermocouple with a diameter of Ф0.1mm is Unfold the positive and negative electrodes of the wire, and gently bend each pole to about 10º by hand. At the same time, feel its softness and hardness to determine the positive and negative electrodes, and compare them with reference materials with a diameter of Ф0.5mm and a length of 100mm. Select the positive and negative electrodes The reference material...

Embodiment 2

[0028] (1) Turn on the digital multimeter with a DC voltage scale division value of 0.0001mV, place it in the DC voltage position, select the multimeter accessory as a pair of red and black connecting wires with hooks, and insert it into the corresponding socket for voltage measurement of the multimeter; prepare It is well known that the poles of S, R, and B types of platinum and platinum-rhodium thermocouple wires that have passed the inspection according to GB / T1598 are used as reference materials, and the electric annealing is completed in accordance with the regulations of GB / T1598; the thermocouple with a diameter of Ф0.3mm to be tested Unfold the positive and negative electrodes of the wire, and gently bend each pole to about 15º by hand. At the same time, feel its softness and hardness to determine the positive and negative electrodes, and compare them with reference materials with a diameter of Ф0.1mm and a length of 200mm. Select the positive and negative electrodes Th...

Embodiment 3

[0033] (1) Turn on the digital multimeter with a DC voltage scale division value of 0.001mV, place it in the DC voltage range, select the multimeter accessory as a pair of red and black connecting wires with hooks, and insert it into the corresponding socket for voltage measurement of the multimeter; prepare It is well known that the poles of platinum and platinum-rhodium thermocouple wires of types S, R, and B that have passed the inspection according to GB / T1598 are used as reference materials, and the electric annealing is completed according to the regulations of GB / T1598; the thermocouple with a diameter of Ф0.5mm is Unfold the positive and negative wires, and gently bend each pole to about 20º by hand, feel its softness and hardness at the same time to determine the positive and negative poles, and compare with the reference material with a diameter of Ф0.7mm and a length of 150mm, and choose the positive and negative poles The reference material platinum rhodium 30 with ...

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Abstract

The invention relates to a rapid model discrimination method for a platinum or platinum-rhodium thermocouple wire, and belongs to the technical field of metal material detection. The working principlethat a like pole comparison method is used to measure the thermal electromotive force is used, and the model of the platinum or platinum-rhodium thermocouple wire is discriminated via a rapid simpletechnology. A thermocouple is not directly placed in an assay furnace for detection. Processes of pre-determination, connection, heating discrimination and model determination are included, and concretely a new thermocouple is composed of a single pole of the thermocouple to be measured and known materials, a connecting position is heated rapidly, the attribute of the material is determined according to a voltage value, and the model is determined. The a platinum or platinum-rhodium thermocouple is characterized by high value, small amount and capable of recoverability and reuse, a traditionaldetection method is high in cost, long in period and likely to pollute a detection system by waste and old thermocouples, and to solve the above problems, the method of the invention is simple in operation, realizes lossless rapid detection, can accurately determine the model of each pair of thermocouple wires in 2 minutes, avoids pollution and has an accurate and reliable detection result.

Description

technical field [0001] The invention relates to a method for quickly identifying the types of platinum and platinum-rhodium thermocouple wires, belonging to the technical field of metal material detection. Background technique [0002] Precious metal thermocouples include three types: S (PtRh10-Pt), R (PtRh13-Pt), and B (PtRh30-PtRh6), which have obvious advantages such as high temperature measurement accuracy and good high temperature oxidation resistance. According to the different requirements of temperature measurement accuracy and operating temperature, precious metal thermocouples are widely used in various high temperature temperature measurement fields. [0003] Precious metal thermocouple materials are valuable, recyclable and reusable, and the amount of recycling is small. However, the waste thermocouples after use are usually contaminated. The traditional method of detection is often long-term, high-cost, and easy to cause irreversible damage to the detection syst...

Claims

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Application Information

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IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 熊雅玲陆玖鹏李雪娇李树屏
Owner 英特派铂业股份有限公司
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