Flexible high-precision K-type thermocouple sensor cable

Abstract

The invention relates to the technical field of temperature sensors, and relates to a flexible high-precision K-type thermocouple sensor cable, which comprises a positive wire core and a negative wirecore wrapped in the same protective layer, and is characterized in that 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 8.96 to 10.36 weight percent of Cr, 0.46 to 0.59 weight percent of Si, 0.36 to 0.48 weight percent of Fe, 0.02 to 0.09 weight percent of Mn and the balance of Ni; the negative electrode wire core is made of nickel-aluminum-manganese alloy and comprises 1.61 wt% to 1.80 wt% of Al, 1.56 wt% to 1.69 wt% of Mn, 0.11 wt% to 0.16 wt% of Fe, 0.58 wt% to 0.69 wt% of Co, 1.35 wt% to 1.59 wt% of Si, 0.01 wt% to 0.06 wt% of C and the balance Ni. According to the flexible high-precision K-type thermocouple sensor cable, the manufacturing length can be arbitrarily prolonged under the condition that continuous production is met, the structure is soft, a relatively accurate linear relationship between the potential valueand the temperature within the use range of 0-1000 DEG C can be ensured, and the flexible high-precision K-type thermocouple sensor cable can be used at the 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 K-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 for the processing technology of materials and parts. Through the control of key process parameters such as temperature and time, the thermal processing process can give the material expected properties, and in the thermal processing process, precise temperature control plays a vital role in the influence of material properties. The thermal processing process can endow the material with expected properties, and high temperature measurement is the basis and core to ensure the control of the thermal processing process, and it is the specification for systematic control of the entire thermal processing process from raw materials to...

AI Technical Summary

Problems solved by technology

[0011] Among them, although precious metal R-type, S-type, and B-type thermocouples meet various technical indicators, the overall cost is too high. From the perspective of users, it brings large production, manufacturing, and maintenance costs to production-oriented enterprises. Cheap metals Among the thermocouples, the armored thermocouple sensors made of traditional armored thermocouple cables have the following problems:

[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;

Images