Revision: 01
Date: 05/09/2025
NTC probes and thermostats measure temperature to control heating, cooling, or safety functions. Accurate and responsive temperature sensing depends on the quality of thermal contact between the sensor and the surface being monitored. Surfaces often have microscopic roughness, gaps, or air pockets. Air is a poor conductor of heat and can cause delays or inaccuracies in temperature detection.
Role of Heat Transfer Paste:
The paste fills surface voids between the sensor tip and the monitored surface.
It eliminates air gaps, ensuring efficient heat conduction.
This improves measurement accuracy, sensor response time, and system reliability.
Heat transfer paste must be applied when fitting NTC probes or thermostats into wells, housings, or against flat surfaces.
Without paste, sensors may:
- Read slower than actual temperature changes (lag response).
- Report on inaccurate temperatures.
- Fail to activate protective cut-outs or controls at the correct set point.
The supplied heat transfer paste is an integral part of the thermal sensing system. Its correct application is mandatory to achieve precise measurement, safe control, and long-term system reliability.
