Let’s speak about static relays VS remote switches, that is, the control of equipments using static relays instead of remote switches. This is a typical application that we employ on our Tempco thermoregulation units in order to control the resistors, which are the heating components.
That’s because, as already explained in the past, to have a very fine and accurate thermoregulation is very important for a variety of industrial sectors, ensuring a very precise intervention set-point on determined industrial production processes. Whether this processes are related to pharma, plastics and rubber, test benches, and in general, industrial sectors requiring a very accurate control of the temperature set-point.
In the past, it was common to employ remote switches to turn on and off the heating resistors. But remote switches, being electromechanical components, have some limits due to the fact that there are some electromechanical contacts responsible for turning on and off the power of the resistors, involving therefore a series of on and off cycles.
These on and off cycles generate a wear of the contacts and on the medium-long term the breakage and failure on the remote switch of the resistors.
This problem can then be solved by using static relays which are electric relays that do not have electromechanical contacts and therefore with no wear issues and allowing very quick on and off cycles, with no wear or idle time, thus providing a very accurate control of the temperature.
We employ them as a standard solution on diathermic oil thermoregulating units which involve very high temperature levels. But with their actual low cost, this is a solution that we employ also on lower power units, where all in all even a remote control switch or a relay could be sufficient. But a static relay offer some advantages in terms of safety and temperature regulation precision that really are undeniable.