This is a
micro-controller based system for monitoring the time, temperature and energy
consumed by the furnace in a pre-heat treatment process. As the name suggests,
it provides an output to control the flow of material in a heat treatment
furnace, till the temperature in the furnace reaches the required set-point
It also computes the total energy consumed by the
furnace through the 3-phase, 4-wire supply, from the start of a new process.
It incorporates a real time clock battery backed to keep a track of ON time
and OFF time ( during power failure ) of the system. It computes the power
loss during the OFF time and accordingly switches ON / OFF the output till the
energy loss occurred due to power failure, is delivered to the furnace again.