Resistors and temperature sensors

These two categories of spare parts have been brought together under one description because, in the hot-melt industry, they are used together.

In the picture above you can see, on the left, 3 resistors of different sizes. On the top right there is a NI120 sensor, and on the bottom right there is a thermostat, which can be used both as a maximum temperature sensor in tubs and for thermostatting special guns.

The resistor heats the element, while the sensor measures the temperature and provides the electronic control with the necessary information to stabilise it.

Resistors differ in size (length and diameter) and power. In order to guarantee a long service life of the heating resistor, its diameter must be adapted to the diameter of the housing where it is to be inserted: the more similar the diameter, the more the heat generated will be transferred to the element to be heated, thus preventing the resistor from overheating.

EMMECI ELETTRONICA, together with the heating resistor, supplies an adequate quantity of thermal interface  material, necessary to improve heat transfer. This thermal interface material must be spread evenly over the outer surface of the resistor to eliminate small air gaps that could limit heat transfer.

Sensors can be of various types, differing in diameter and in the type of signal provided as the temperature changes. It is extremely important to use the right sensor, suitable for the system, as a different type would provide a more or less incorrect measurement, creating a risk of overheating the heating resistor.

Our technical staff can help you find the right resistor or sensor model for your application.