Designing of water level sensor and its monitoring system

Abstract

The Water Level Sensor circuit was designed to sense level of Dionized Water (DI Water) in Humidity Reservoir of HERAEUS HC4033 Climatic Chamber. This chamber is useful in order to test the life span of Integrated Circuits (ICs) in ICs manufacturing. The proposed system consists of a set of sensor for measuring level of DI Water in Humidity Reservoir and its monitoring system. This Water Level Sensor circuit is attached with floating switch to indicate level of DI Water in Humidity Reservoir in a range of O to 6 liters using 6 volt of direct current (DC). In this project, the designing of computer-based monitoring system for water level sensor was developed. Data acquisition (DAQ) card system was used to collect data regarding the installed system performance, for evaluation purposes. The collected data were first conditioned using precision electronic circuits and then interfaced to Personal Computer (PC) using data acquisition card. The MATLAB software program was used to further process, display and store collected data in PC disk. The proposed architecture permits the rapid system development and has the advantage of flexibility in the case of changes, while it can be easily extended for monitoring the water level sensor operation