Flexible high-precision N type thermocouple sensor cable

Abstract

The invention relates to the technical field of temperature sensors, and relates to a flexible high-precision N type thermocouple sensor cable, which comprises a positive wire core and a negative wirecore wrapped in a same protective layer. Insulating layers are respectively arranged outside the positive wire core and the negative wire core; the material of the positive wire core is nickel-chromium-silicon alloy, and the positive wire core contains 13.12 to 15.27 wt% of Cr, 0.89 to 1.34 wt% of Si, 0.02 to 0.18 wt% of Fe, 0.01 to 0.06 wt% of Mn and the balance of Ni; and the negative electrodewire core is made of a nickel-silicon-cobalt alloy, and contains 3.62 to 4.72 wt% of Si, 0.13 to 0.36 wt% of Co, 0.10 to 0.24 wt% of Fe, 0.01 to 0.08 wt% of Al and the balance of Ni. According to theflexible high-precision N type thermocouple sensor cable, the manufacturing length can be prolonged at will under the condition that continuous production is met, the structure is soft, the accuratelinear relation between the potential value and the temperature within the use range of 0-1000 DEG C can be guaranteed, and the flexible high-precision N type thermocouple sensor cable can be used atthe high temperature of 1300 DEG C.

Description

Technical field [0001] The invention relates to the technical field of temperature sensors, in particular to a flexible high-precision N-type thermocouple sensor cable. Background technique [0002] With the development of science and technology, the demand for high-performance materials and parts is increasing, which puts forward higher requirements on materials and parts processing technology. Through the control of key process parameters such as temperature and time, the thermal processing process can give the material the expected performance, and in the thermal processing process, precise temperature control plays a vital role in the material performance. The thermal processing process can give the material the expected performance, and the high temperature measurement is the basis and core of ensuring the control of the thermal processing process, and it is the specification for the system control of the entire thermal processing process from raw materials to component manu...

AI Technical Summary

Problems solved by technology

[0012] 1. From the low-temperature section to the high-temperature section, there are few traditional thermocouple products that meet all temperature points with high precision, and the general accuracy only meets the national standard level 1 accuracy (when the product tolerance is 0°C to 375°C, ≤±1.5°C, ≤0.4% at 375℃~1000℃︱t︱), which limits the application range of the product during thermal processing;

[0013] 2. The product is bulky and heavy, has poor repeated bending performance and is easy to break, which affects on-site laying, testing and operation;

[0014] 3. The use length of the product is limited to a certain extent, which cannot meet the long-distance laying and affects the on-site use;

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