Dual-redundancy platinum thermal resistance wire temperature sensor and preparation method thereof
A technology of temperature sensor and platinum thermal resistance, which is applied in the direction of thermometers, thermometers, and parts of thermometers that are directly sensitive to heat/magnetic elements, can solve the problem of not being able to withstand harsh environments, low environmental tolerance, Short life time and other problems, to improve the safety of use, increase the temperature sensitivity, and reduce the effect of self-heating
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Embodiment 1
[0031] A kind of dual redundancy platinum thermal resistance wire temperature sensor of the present embodiment, as Figure 1-Figure 4 As shown, it includes a hollow protective shell 1, an electrical connector 2 is installed inside the protective shell 1, and one end of the electrical connector 2 is connected with a double-redundant platinum thermal resistance wire winding extending to the outside of one end of the protective shell 1. 3. The outer side of the double-redundant platinum thermal resistance wire winding 3 is covered with a mounting sleeve 5; the other end of the electrical connector 2 is connected to a terminal 4 extending to the outside of the other end of the protective shell 1, and the protective shell 1 is also filled with epoxy resin inside.
[0032] The protective shell 1 is used to protect the electrical connector 2 and the double-redundant platinum thermal resistance wire winding 3 inside it. One end of the double-redundant platinum thermal resistance wire ...
Embodiment 2
[0036] This embodiment is further optimized on the basis of embodiment 1, such as Figure 2-Figure 4 As shown, the double-redundancy platinum thermal resistance wire winding 3 includes a skeleton group 31, and the first platinum thermal resistance wire 01 and the second platinum thermal resistance wire 02 are wound at equal intervals on the skeleton group 31. The skeleton group On the opposite sides of 31, there are heat conducting sheets 32 in contact with the first platinum thermal resistance wire 01 and the second platinum thermal resistance wire 02 respectively; Two platinum thermal resistance wires 02 are connected to the lug 33 , and the other end of the lug 33 is connected to the electrical connector 2 .
[0037] The skeleton group 31 is a strip-shaped mica sheet group, one end of the skeleton group 31 is a connection end and is connected with a lug 33 by welding, screwing, or riveting, and the other end of the lug 33 is connected to the outside through the electrical c...
Embodiment 3
[0041] This embodiment is further optimized on the basis of above-mentioned embodiment 1 or 2, such as Figure 2-Figure 4 The skeleton group 31 includes a first skeleton 001 and a second skeleton 002 which are aligned in parallel and are insulated from each other. 01 and the second platinum thermal resistance wire 02 through the positioning hole group, the end of the first skeleton 001 and the end of the second skeleton 002 are provided with the first platinum thermal resistance wire 01 and the second platinum thermal resistance wire 02 The entry and exit hole groups that pass through.
[0042] Both the first frame 001 and the second frame 002 are long flat mica sheets with a thickness of 0.3mm and a width of 5mm. The length of the first frame 001 and the second frame 002 depends on the length of the platinum thermal resistance wire that needs to be wound. Set accordingly. The head end of the first frame 001 and the head end of the second frame 002 are both provided with a p...
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Abstract
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