<![CDATA[The sump in the mine is a vital element in mining operations, so special handling is required in this regard. This research discusses the implementation of an automatic Water Level Indicator (WLI) device in mining. This tool is designed to monitor, control, and report the water level in the sump in real-time using an Arduino that utilises an ultrasonic sensor connected to a microcontroller-based control system. The actual measurement of water level data obtained from the WLI enables more precise pump control, thus avoiding the condition of the pump working less optimally. In its application, this WLI will utilise a simple Arduino and several sensors in the analysis, as well as the use of a transmitter to send actual data that will be captured by the receiver. For the power supply, the tool in the field will use solar panels so that this WLI is expected to operate 24 hours in monitoring. The results of this research show that the application of automatic WLI will provide several benefits, including a 5-10% increase in pumping energy efficiency, reduced operational costs by optimising pump working hours, increased working hours of 1-2 hours per day, and obtaining more accurate and actual data. Even in some cases, such as rain in the field, the tool can still work for monitoring so that it can transmit actual data in the field, so it will be very efficient when applied in mining.]]>
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