Advantages of of Mineral Insulated RTD Sensors are -
The high density of the mineral powder promotes rapid heat transfer between conductor and sheath.
Mineral insulated cable is highly flexible and can be formed in to angles and shapes to ensure a perfect fit in the application. This also allows easy installation in locations where access is difficult.
Wide temperature range
Mineral insulated sensors are a popular choice as they have a very wide temperature range. Fire-proof and can be exposed to considerably higher temperatures than synthetic sheath cables.
The construction of the cable guarantees a long conductor life, due to the sheath and insulating powder protecting them they are able to withstand environmental conditions such as corrosion.
Reference : sterlingsensors