| 摘要 |
PURPOSE:To ensure the satisfactory control for a thermal divice such as a solar heat collector, etc., providing a converter that compares the measured value with the set value of the temperature, himidity, etc. and a programmable ROM capable of free writing and deciding the operating conditions of the thermal device. CONSTITUTION:The measured value of temerature given from each sensor is fed as an analog electric signal to the warm water thermostats 28 and 29, a temperature differential thermostat 30, a freezing prevention thermostat 31, an overheat prevention thermostat 32 and a pump protection thermostat 33 respectively. The thermostats 28 and 29 compare the levels between the analog electric signal and the set signal given from a setter 34. Other thermostats compare the levels between said electric signal and the fixed signal defined previously and then deliver the outputs of 1 and 0. While a programmable ROM uses the output signal of each thermostat to an address input and delivers a prescribed data output. In response to this data output, the operating conditions are dicided for a thermal device. |
