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The application of the U type thermocouple and material requirements

2020-11-08

JVTIA

207

U type electric heating tube is a metal shell, along the tube center axial uniform spiral electric thermal bonding wire ( Nickel, chromium, iron chromium alloy) The gap filling compaction with good thermal conductivity of insulating oxide magnesia, nozzle with silica gel or ceramic seal on both ends.

U type thermocouple material requirements:

1. The electricity the factors which affect the quality of the heating tube, the quality of the material of very important 2. The reason. The rational selection of raw materials, thermocouple is the premise of guarantee the quality of thermocouple.

3. The selection of pipe principle: heat resistance, corrosion resistance.

4. The selection of resistance wire: Cr20Ni80

5. The selection of magnesia powder: industrial grade magnesium oxide powder

6. The selection of sealing materials: silicone oil + 704 sealant

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