| 摘要 |
The control and regulating instrument is used for heating regulation of mineral oil or gas fired heaters. The safety limiting values are monitored and the ignition phase is controlled. The heating performance is regulated steplessly with wide regulating range also when supply voltage fluctuates to marked extent. A regulating circuit is provided for controlling the rotating speed of the combustion air blower (M). A voltage control oscillator (VCO) generates the actuating pulses for the fuel pump (P) by means of a pulse divider (TL). A combustion temp. limiting value switching circuit (TS) and a reference and actual value comparison circuits (RV) are provided together with connection network (VN) for actuating the blower regulator. They also control the voltage control oscillator and the reference value of the temps. limiter (TS). A control logic system (SL) controls the heating up phase and disconnects system in case of defects. |
