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403型基础代谢测定仪(简称测定仪)的热导池予热时间过长和鼓风机转动时间过早。为此我们在电路上作了改进,以节省电能和延长仪器使用寿命,改进后效果较好。改进后的电路如图所示。①鼓风机由手控开关直接控制,将连接继电器的电路拆除;②继电器9,10两脚(即图中A、B两点),改为控制热导池,⑧开关电路也作了改动。改进后热导池于上班前2小时被上一天定好的钟控电路自动接通予热。使用前半小时打开鼓风机(手控),而后即可进行正常测定。
403 basal metabolic profilometer (referred to as the detector) of the thermal conductivity cell to preheat the heat too long and the blower rotation time too early. To this end we made improvements in the circuit to save energy and extend the life of the instrument, the improved effect is better. Improved circuit as shown. ① blower directly controlled by the manual switch, the circuit will be connected to the relay removed; ② relay 9,10 feet (ie, A, B two points), instead of controlling the thermal conductivity of the pool, ⑧ switch circuit also made changes. Improved heat conduction pool 2 hours before work was set on a good day clock circuit automatically connected to the heat. Open the blower half an hour before use (manual), and then you can make the normal determination.