Due to its simple structure, low cost, ease of operation, and reliable starting function, the two-position regulator has gained widespread use. However, its control accuracy is low and cannot meet the requirements of high-precision parts. After analyzing and studying the reasons for the oscillation of the two-position regulator,All-fiber trolley furnaceThe following brief methods can be employed for improvement.

A low-inertia auxiliary thermocouple is串联 in the measurement loop to mitigate the impact of the thermocouple's laziness on control functionality.

   All-fiber trolley furnacePower on, main thermocouple T1 heating, auxiliary thermocouple T-pool heated by the auxiliary heating wire. As the two thermocouples are connected in series.

The temperature indicated by the gauge is higher than the actual temperature inside the furnace, causing the control gauge to act prematurely and significantly increasing the switching frequency of the control gauge, while reducing the amplitude of temperature fluctuations. The introduction of a compensating thermocouple introduces a reactive quantity into the controlled variable, drastically altering the functionality of the two-position control gauge, endowing it with a proportional derivative function. The switching cycle time is no longer determined by the control gauge's deadband, but rather by the response characteristics. This then overcomes temperature fluctuations caused by the control gauge's deadband and the thermocouple's inertia. Simultaneously, the introduction of the derivative effect greatly improves the startup characteristics and avoids temperature overshoot.