Preprint Article Version 1 This version is not peer-reviewed

Device for Measuring and Maintaining the Water’s Level in a Tank

Version 1 : Received: 13 April 2019 / Approved: 15 April 2019 / Online: 15 April 2019 (12:57:40 CEST)

How to cite: Craiu, I.; Fidel, N.; Stan, M.; Chirescu, R.; Ion, F. Device for Measuring and Maintaining the Water’s Level in a Tank. Preprints 2019, 2019040173 (doi: 10.20944/preprints201904.0173.v1). Craiu, I.; Fidel, N.; Stan, M.; Chirescu, R.; Ion, F. Device for Measuring and Maintaining the Water’s Level in a Tank. Preprints 2019, 2019040173 (doi: 10.20944/preprints201904.0173.v1).

Abstract

This paper presents a device for measuring and maintaining the constant water level in a tank. The device uses a capacity sensor to measure the water level. The sensor has a DC voltage output proportional to the water level in the tank. This voltage can be used in other automation too. The water level, in percentages, is displayed on a vu meter with 8 LEDs. The circuit for maintaining the constant level consists in a comparator with hysteresis. The level of the water is adjustable, using a reference voltage from a potentiometer (marked in percentages). The level of the water is compared with the prescribed level and the difference between them commands the start/stop of the water pump which supplies the tank through a relay. The device is powered by 220 V and is isolated from the environment.

Subject Areas

capacitive level sensor; water level monitoring; maintaining constant water level

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