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Amperometry: Overview01:10

Amperometry: Overview

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Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...
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Controlled-Current Coulometry: Overview01:27

Controlled-Current Coulometry: Overview

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Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
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Related Experiment Video

Updated: Jun 9, 2025

Design and Construction of an Urban Runoff Research Facility
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Mobile Application Development for Prepaid Water Meter Based on LC Sensor.

Ario Kusuma Purboyo1, Hanif Fakhrurroja1,2, Dita Pramesti1

  • 1School of Industrial Engineering, Telkom University, Bandung 40257, Indonesia.

Sensors (Basel, Switzerland)
|October 26, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a low-cost, low-power prepaid water meter system using LC sensors and mobile app connectivity. It enhances accuracy and reduces errors compared to traditional meters, offering a sustainable solution for water management.

Keywords:
Bluetooth low energyLC sensormobile applicationprepaid water metertoken

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Area of Science:

  • Engineering
  • Computer Science
  • Environmental Science

Background:

  • Conventional water meters often rely on manual data recording, leading to inaccuracies and inefficiencies.
  • Postpaid billing systems are susceptible to human error, impacting accurate water usage monitoring.
  • There is a need for cost-effective and accurate water monitoring solutions, especially in regions like Indonesia.

Purpose of the Study:

  • To develop and evaluate a novel prepaid water meter system.
  • To integrate tokenization, LC sensors, and mobile application connectivity for precise water consumption monitoring.
  • To provide a low-cost and low-power alternative to traditional water metering systems.

Main Methods:

  • Development of a prepaid water meter system incorporating LC sensors and Bluetooth Low Energy (BLE) connectivity.
  • Utilization of a tokenization mechanism for prepaid functionality.
  • Implementation of a mobile application developed using the design thinking methodology.
  • Load testing of the back-end server and accuracy testing of LC sensors.

Main Results:

  • The mobile application achieved a usability testing score of 80.
  • The back-end server exhibited a latency of 1.973 milliseconds and an error rate of 8.74% under load.
  • LC sensors demonstrated an average error rate of 1.33%.
  • The system operates with low power consumption (129 mA per cycle) and has an estimated battery life of six years.

Conclusions:

  • The developed prepaid water meter system offers a precise and cost-effective solution for monitoring water usage.
  • Integration of LC sensors and BLE connectivity ensures accurate data collection.
  • The system's low power consumption and long battery life contribute to its sustainability and practicality.