pH Neutralization Through Internet

Abstract

This project uses an IDAC-1 board to sample and control the pH level in a tank. The whole control is performed through the Internet. The experimental arrangement is placed on the task location and the controlling computer is located in a different one. Internet is the transport media. The protocol used in this project is UDP/IP. The pH level is measured by a pH meter and its output is sampled by an A/D converter integrated on the IDAC-1. To change the pH level ON-OFF valves control the free flow of light solutions acid and alkaline. The controlling computer through the Internet acting as client asks for the pH level, the IDAC-1 responds as server with the 10-bit resolution sampling pH meter. If pH is away from the set point the corresponding valve opens, neutralizing this way the solution. The whole procedure is logged in a file on the controlling computer. This application can give the ability to the Internet user to monitor and control the pH of a solution anywhere in the Word Wide Web (WWW)