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 pe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] (1) Turn on the digital multimeter with a DC voltage scale of 0.001mV, place it in the DC voltage position, choose a pair of hooked red and black connecting wires for the multimeter accessories, and insert them into the corresponding sockets for voltage measurement of the multimeter; prepare; It is well known that S, R, B type platinum and platinum rhodium thermocouple wires qualified according to GB / T1598 are used as reference materials, and energized annealing is completed in accordance with GB / T1598; the thermocouple to be tested with a diameter of Ф0.1mm Unfold the wire positive and negative poles, gently bend each pole to about 10º with your hands, and feel its softness to determine the positive and negative poles, and compare with the reference material with a diameter of Ф0.5mm and a length of 100mm, choose the positive and negative poles The reference material platinum rhodium 10 with the same hardness and softness, bend one end of each pole of t...

Example Embodiment

[0027] Example 2

[0028] (1) Turn on the digital multimeter with the DC voltage scale division value of 0.0001mV, place it in the DC voltage scale, select the multimeter accessories as a pair of red and black cables with hooks, and insert the corresponding sockets for voltage measurement of the multimeter; prepare; It is well known that S, R, B type platinum and platinum rhodium thermocouple wires qualified according to GB / T1598 are used as reference materials, and energized annealing is completed in accordance with GB / T1598; the thermocouple to be tested with a diameter of Ф0.3mm Unfold the wire positive and negative poles, gently bend each pole to about 15º with your hands, and feel its softness to determine the positive and negative poles, and compare with the reference material with a diameter of Ф0.1mm and a length of 200mm, choose the positive and negative poles The reference material platinum and rhodium 13 with the same hardness and softness, bend one end of each pole of...

Example Embodiment

[0032] Example 3

[0033] (1) Turn on the digital multimeter with the DC voltage scale division value of 0.001mV, place it in the DC voltage scale, select the multimeter accessory as a pair of red and black connecting wires with hooks, and insert the corresponding sockets for voltage measurement of the multimeter; prepare; It is well known that S, R, B type platinum and platinum rhodium thermocouple wires qualified according to GB / T1598 are used as reference materials, and energized annealing is completed in accordance with GB / T1598; the thermocouple to be tested with a diameter of Ф0.5mm Unfold the wire positive and negative poles, gently bend each pole to about 20º with your hands, and feel its softness to determine the positive and negative poles. Compare with the reference material with a diameter of Ф0.7mm and a length of 150mm, choose the positive and negative poles. The reference material platinum and rhodium 30 with the same hardness and softness, bend one end of each pol...

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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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