Measurement of the mechanical working for use as the basic information on maintenance of machinery. In industry mainly driven by electrical system. And working machinery also affects the work of electric system directly, such as machinery 1 machine motor 1 solvent work in the normal power electric current, 20 A. As time passes, machinery lubrication system dry. Make mechanical flexibility, stiffness, thus not affect electrical electricity of power system is increased, the effect of dry lubrication system. To make the electric motor heating up and electricity will be higher. (the reasons to payment increase. Effect of heat in a long time, it will make the motor defective machinery to be defective as well. From this reason makes industry should have the measuring current and displays the current while the machine work. As data maintenance plan.At present, most of the company"s maintenance Will be in the maintenance when the system is a problem (Corrective maintenance), because do not know the information work of the mechanical, such as value. Electricity during the machine working, etc. as a preventive maintenance (Preventive maintenance) from machinery to stop production or to slow the production until the maintenance is performed. The party organizer spot to the problem. By creating a galvanometer, alternating current 3 phase. Which is the one in the process of measurement system for mechanical working In order to make the maintenance of the company, the maintenance in time. Without machinery, slow down or stop production.So the author has partnered with the company Asahi Thai Alloy Co., Ltd., the design and construction of AC dynamometer 3 phase. With the current measurement area since 0 - 40 AMP. To be used in the measurement of the electricity used in each phase of the machine inside the factory of บริษัทอาซาฮี - Thai Alloy Co., Ltd. to measure the electric current of the machine. Using the Sensei ORN
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