PT100,PT1000 platinum resistance NTC thermocouple how to weld?

PT100 temperature sensor is a platinum thermal resistance, its resistance will change with temperature changes. The 100 after PT means that it has a resistance of 100 ohms at 0 ℃ and about 138.5 ohms at 100 ℃.

Its working principle: When pt100 is at 0 degrees Celsius, its resistance is 100 ohms, and its resistance will increase at an approximately uniform rate as the temperature rises. But the relationship between them is not a simple proportional relationship, but should be closer to a parabola.

that PT100,PT1000 in general, what kind of way to take welding?

In fact, now NTC temperature sensors are basically using resistance spot welding equipment for welding, using resistance spot welding, instead of the traditional way of electric soldering iron welding resistance pin. Using the principle of resistance spot welding electrode heating, the resistance pin and the multi-strand wire are placed in the pre-prepared tungsten head mold, and the welding head is pressed and heated to weld the resistance pin and the multi-strand wire to each other.

Welding Diagram: