DO820

描述

定温控制伴热带的供电，当管道温度低于某值时（例如4℃，不要低于0℃再动作，这样费电），给紧贴管道外壁的伴热带通电加温；当管道的温度到达另一值时（例如12℃，可根据实际调整），伴热带断电。伴热带功率的计算方法：宽8mm－20MM，每米15瓦—30瓦，10米可达200瓦，采用0.5平方的电线即可，如果宽度大于8mm，每米的功率大于20瓦。伴热带越长功率越大。

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