Our insertation sensors measure the internal or core temperature in solids or in plastic or porous bulks. Insertation sensors all have in common is that they have a sensitive part. There, the heat conduction takes place from the solid part of the sensor.
resistance thermometer with many different variations,
small protecting tube material 1.4571
resistance thermometer to fit into grooves; slim; fast response, suitable for temperature measurement in engines
resistance thermometer, suitable in plastic injection and plastic blowing equipment