Week 3

Assalamualaikumwarahmatullahhiwabarakatuh...

Last semester 5 year 2013, we have been planned to do a Easy Home App System (EHAS). EHAS is an application on android that can control all electric switch and appliance at home by using internet connection. But unfortunately, this project cost us a lot of money. The budget that we expect by the research is about RM2,000.

So, in this semester, we have planned to change our project to Digitl pH Meter.

Digital pH Meter Introduction,

Basiclly we know pH have three types which is acid, neutral and alkaline. But we don't know how pH value is measure. Every subtance has its own pH value such as food, soap, water and etc. So, the pH meter is used to measure the value of pH for each subtance.

A pH meter is an electronic device used for measuring the pH (acidity or alkalinity) of liquid (though special probes are somethimes used to measure the pH of semi-soli subtance). A typical pH meter consist of a special measuring probe ( a glass electrodes) connected to an electronic meter that measures and displays the pH reading.

Our objective,

- To design and testing the pH meter circuit.
- To construct the pH meter.
- To analysis pH meter performance.

                 > RESPONSE
                 > ACCURACY
                 > CALIBRATION
                 > MAINTENANCE