Electric heaters can deliver heat just where you need it and, when teamed with proper thermocouple placement, keep your process in control and at a steady state. But, poor heating system design or sensor placement will result in less-than-ideal results, increased scrap and premature heater failures.
Understanding the basic principles of heat and heat transfer is vital for the success rate of projects and to address common challenges before they occur. Heat transfer properties are much like a sound wave. A tool that has heat traveling around a corner, through threads or jumping across non-machined surfaces is not a realistic expectation for any real-world system. Heat is energy and, therefore, must conform to the laws of physics.